Merge pull request 'fix: replace username with first and last name and use user_id UUID for primary keys' (#32) from user-di into master

Reviewed-on: #32

.sqlx/query-004d12b7ccb1b21c39ef6de716953bf039bdba5096ae139be7656170ff45613f.json

@@ -1,6 +1,6 @@
 {
   "db_name": "PostgreSQL",
-  "query": "SELECT EXISTS (\n                SELECT 1\n                    FROM user_query\n                WHERE\n                    username = $1\n            );",
+  "query": "SELECT EXISTS (\n                SELECT 1\n                    FROM user_query\n                WHERE\n                    user_id = $1\n            );",
   "describe": {
     "columns": [
       {
@@ -11,12 +11,12 @@
     ],
     "parameters": {
       "Left": [
-        "Text"
+        "Uuid"
       ]
     },
     "nullable": [
       null
     ]
   },
-  "hash": "ed4bd44b2a0595cd80b36ce70b30ab55af1af12c1f22a2d4a2baf8af4569cf73"
+  "hash": "004d12b7ccb1b21c39ef6de716953bf039bdba5096ae139be7656170ff45613f"
 }

.sqlx/query-0fbaa8084440adce8a6162d67e3e57b6062cc17bbbbeb5ea3e1e58db17ac8240.json

@@ -1,6 +1,6 @@
 {
   "db_name": "PostgreSQL",
-  "query": "INSERT INTO verification_otp (secret, created_at, purpose, username)\n            VALUES ($1, $2, $3, $4);",
+  "query": "INSERT INTO verification_otp (secret, created_at, purpose, user_id)\n            VALUES ($1, $2, $3, $4);",
   "describe": {
     "columns": [],
     "parameters": {
@@ -8,10 +8,10 @@
         "Varchar",
         "Timestamptz",
         "Text",
-        "Text"
+        "Uuid"
       ]
     },
     "nullable": []
   },
-  "hash": "487deedfaaf10c4ab02fc223b8fec4bf359b082331adfa788096742673168be3"
+  "hash": "0fbaa8084440adce8a6162d67e3e57b6062cc17bbbbeb5ea3e1e58db17ac8240"
 }

.sqlx/query-14e8d7a1c8f80701b76b2bac69b1ecd99f7694d620f1945ad5c4ae474a17be1b.json

@@ -0,0 +1,22 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "UPDATE\n                        user_query\n                    SET\n                        user_id = $1, version = $2, first_name = $3, email = $4,\n                        hashed_password = $5, is_admin = $6, is_verified = $7, deleted = $8,\n                        last_name=$9;",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Left": [
+        "Uuid",
+        "Int8",
+        "Text",
+        "Text",
+        "Text",
+        "Bool",
+        "Bool",
+        "Bool",
+        "Text"
+      ]
+    },
+    "nullable": []
+  },
+  "hash": "14e8d7a1c8f80701b76b2bac69b1ecd99f7694d620f1945ad5c4ae474a17be1b"
+}

.sqlx/query-48aa5f3eacaaec4a74ba5d2908875fcac797644d104d3d580715587ecb2e2119.json

@@ -9,7 +9,7 @@
         "Text",
         "Text",
         "Uuid",
-        "Text"
+        "Uuid"
       ]
     },
     "nullable": []

.sqlx/query-5385ba9531992b91670e52b5332af1f09069e1d6d168f9e93b729cf964e97c35.json

@@ -21,7 +21,7 @@
       {
         "ordinal": 3,
         "name": "owner",
-        "type_info": "Text"
+        "type_info": "Uuid"
       }
     ],
     "parameters": {

.sqlx/query-6523c83a859d7ca283d209133a10d4ac74b6b0358bdf1e17f1a54e2cc02e305b.json

@@ -1,12 +1,12 @@
 {
   "db_name": "PostgreSQL",
-  "query": "SELECT \n                view_id, version\n             FROM\n                user_query\n            WHERE\n                view_id = $1;",
+  "query": "SELECT \n                user_id, version\n             FROM\n                user_query\n            WHERE\n                user_id = $1;",
   "describe": {
     "columns": [
       {
         "ordinal": 0,
-        "name": "view_id",
+        "name": "user_id",
-        "type_info": "Text"
+        "type_info": "Uuid"
       },
       {
         "ordinal": 1,
@@ -16,7 +16,7 @@
     ],
     "parameters": {
       "Left": [
-        "Text"
+        "Uuid"
       ]
     },
     "nullable": [
@@ -24,5 +24,5 @@
       false
     ]
   },
-  "hash": "fa1c65d51e3e0521d6a20998f4b80b615c9e0ffe9ceda82e0bce410c9aca39a0"
+  "hash": "6523c83a859d7ca283d209133a10d4ac74b6b0358bdf1e17f1a54e2cc02e305b"
 }

.sqlx/query-70e6216e30f90175d4c3bad51ff51f5fa2b6f965d868b15c53264cb8cd6b4053.json

@@ -1,6 +1,6 @@
 {
   "db_name": "PostgreSQL",
-  "query": "SELECT EXISTS (\n                SELECT 1\n                    FROM verification_otp\n                WHERE\n                    username = $1\n                AND\n                    purpose = $2\n                AND\n                    secret = $3\n            );",
+  "query": "SELECT EXISTS (\n                SELECT 1\n                    FROM verification_otp\n                WHERE\n                    user_id = $1\n                AND\n                    purpose = $2\n                AND\n                    secret = $3\n            );",
   "describe": {
     "columns": [
       {
@@ -11,7 +11,7 @@
     ],
     "parameters": {
       "Left": [
-        "Text",
+        "Uuid",
         "Text",
         "Text"
       ]
@@ -20,5 +20,5 @@
       null
     ]
   },
-  "hash": "3edf94a78114819085b573ff51702faee1c444c24bbf6d33ec1b4b245dd9f675"
+  "hash": "70e6216e30f90175d4c3bad51ff51f5fa2b6f965d868b15c53264cb8cd6b4053"
 }

.sqlx/query-750f96296e6d2c0b6d79c6f21e5b665369d5062a42c2c405f43d56a614a1e0ea.json

@@ -1,21 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "UPDATE\n                        user_query\n                    SET\n                        view_id = $1, version = $2, username = $3, email = $4,\n                        hashed_password = $5, is_admin = $6, is_verified = $7, deleted = $8;",
-  "describe": {
-    "columns": [],
-    "parameters": {
-      "Left": [
-        "Text",
-        "Int8",
-        "Text",
-        "Text",
-        "Text",
-        "Bool",
-        "Bool",
-        "Bool"
-      ]
-    },
-    "nullable": []
-  },
-  "hash": "750f96296e6d2c0b6d79c6f21e5b665369d5062a42c2c405f43d56a614a1e0ea"
-}

.sqlx/query-7a401e98fff59eb8c0fe1744ccdea68842eaf86ba312c2eb324854041beb9de7.json

@@ -1,21 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "INSERT INTO user_query (\n                        view_id, version, username, email,\n                        hashed_password, is_admin, is_verified, deleted\n                    ) VALUES (\n                        $1, $2, $3, $4, $5, $6, $7, $8\n                    );",
-  "describe": {
-    "columns": [],
-    "parameters": {
-      "Left": [
-        "Text",
-        "Int8",
-        "Text",
-        "Text",
-        "Text",
-        "Bool",
-        "Bool",
-        "Bool"
-      ]
-    },
-    "nullable": []
-  },
-  "hash": "7a401e98fff59eb8c0fe1744ccdea68842eaf86ba312c2eb324854041beb9de7"
-}

.sqlx/query-7a59c989d043c249cd04fe24544cf9ea55e1329ce4b53889947478c2e766ea1a.json

@@ -1,42 +1,52 @@
 {
   "db_name": "PostgreSQL",
-  "query": "SELECT \n                username, email, hashed_password, is_admin, is_verified, deleted\n             FROM\n                user_query\n            WHERE\n                view_id = $1;",
+  "query": "SELECT \n                first_name, last_name, user_id, email, hashed_password, is_admin, is_verified, deleted\n             FROM\n                user_query\n            WHERE\n                user_id = $1;",
   "describe": {
     "columns": [
       {
         "ordinal": 0,
-        "name": "username",
+        "name": "first_name",
         "type_info": "Text"
       },
       {
         "ordinal": 1,
-        "name": "email",
+        "name": "last_name",
         "type_info": "Text"
       },
       {
         "ordinal": 2,
+        "name": "user_id",
+        "type_info": "Uuid"
+      },
+      {
+        "ordinal": 3,
+        "name": "email",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 4,
         "name": "hashed_password",
         "type_info": "Text"
       },
       {
-        "ordinal": 3,
+        "ordinal": 5,
         "name": "is_admin",
         "type_info": "Bool"
       },
       {
-        "ordinal": 4,
+        "ordinal": 6,
         "name": "is_verified",
         "type_info": "Bool"
       },
       {
-        "ordinal": 5,
+        "ordinal": 7,
         "name": "deleted",
         "type_info": "Bool"
       }
     ],
     "parameters": {
       "Left": [
-        "Text"
+        "Uuid"
       ]
     },
     "nullable": [
@@ -45,8 +55,10 @@
       false,
       false,
       false,
+      false,
+      false,
       false
     ]
   },
-  "hash": "803f868ee4a79fefdd85c5d0a034a5925c3bb7de87828095971cb19bc1fc7550"
+  "hash": "7a59c989d043c249cd04fe24544cf9ea55e1329ce4b53889947478c2e766ea1a"
 }

.sqlx/query-89ebb8b413db2c4da15adff8a09d04d5849c3990f0965de479b76630317f8a6e.json

@@ -9,7 +9,7 @@
         "Text",
         "Text",
         "Uuid",
-        "Text"
+        "Uuid"
       ]
     },
     "nullable": []

.sqlx/query-c54d1b89ee39ceb11326e82962eef3d8f588f6252ba4bbac99fb73cdbbcd2204.json

@@ -1,16 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "DELETE FROM\n                verification_otp\n             WHERE\n                 username = $1\n             AND\n                 purpose = $2\n             AND\n                 secret = $3;",
-  "describe": {
-    "columns": [],
-    "parameters": {
-      "Left": [
-        "Text",
-        "Text",
-        "Text"
-      ]
-    },
-    "nullable": []
-  },
-  "hash": "c54d1b89ee39ceb11326e82962eef3d8f588f6252ba4bbac99fb73cdbbcd2204"
-}

.sqlx/query-ec80b5dc41697e7df7112962aba8185040fc0a101edea4b7e0c23f6468300196.json

@@ -1,6 +1,6 @@
 {
   "db_name": "PostgreSQL",
-  "query": "SELECT\n                secret\n             FROM\n                verification_otp\n             WHERE\n                 username = $1\n             AND\n                 purpose = $2;",
+  "query": "SELECT\n                secret\n             FROM\n                verification_otp\n             WHERE\n                 user_id = $1\n             AND\n                 purpose = $2;",
   "describe": {
     "columns": [
       {
@@ -11,7 +11,7 @@
     ],
     "parameters": {
       "Left": [
-        "Text",
+        "Uuid",
         "Text"
       ]
     },
@@ -19,5 +19,5 @@
       false
     ]
   },
-  "hash": "7c48c7569b16e9600aa31fbf14b9ceeb195da7cde0082be861369ef4f997c534"
+  "hash": "ec80b5dc41697e7df7112962aba8185040fc0a101edea4b7e0c23f6468300196"
 }

.sqlx/query-f1b7a6581e20b9f1c0dabeb7a2479d70ab005cf787a0ed13260e65f7ea949136.json

@@ -0,0 +1,22 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "INSERT INTO user_query (\n                        version, first_name, last_name, email,\n                        hashed_password, is_admin, is_verified, deleted, user_id\n                    ) VALUES (\n                        $1, $2, $3, $4, $5, $6, $7, $8, $9\n                    );",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Left": [
+        "Int8",
+        "Text",
+        "Text",
+        "Text",
+        "Text",
+        "Bool",
+        "Bool",
+        "Bool",
+        "Uuid"
+      ]
+    },
+    "nullable": []
+  },
+  "hash": "f1b7a6581e20b9f1c0dabeb7a2479d70ab005cf787a0ed13260e65f7ea949136"
+}

.sqlx/query-ffb4315a9b95ed39964c2a0a5a9dc45e4ab7941ced043931568023238d5127f7.json

@@ -0,0 +1,16 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "DELETE FROM\n                verification_otp\n             WHERE\n                 user_id = $1\n             AND\n                 purpose = $2\n             AND\n                 secret = $3;",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Left": [
+        "Uuid",
+        "Text",
+        "Text"
+      ]
+    },
+    "nullable": []
+  },
+  "hash": "ffb4315a9b95ed39964c2a0a5a9dc45e4ab7941ced043931568023238d5127f7"
+}

migrations/20240516200802_cqrs_init.sql

@@ -17,17 +17,16 @@ CREATE TABLE IF NOT EXISTS events
 
 CREATE TABLE IF NOT EXISTS user_query
 (
-    view_id text                        NOT NULL,
     version           bigint CHECK (version >= 0) NOT NULL,
 
-	username TEXT NOT NULL UNIQUE,
+	first_name TEXT NOT NULL,
+	last_name TEXT NOT NULL,
+	user_id UUID NOT NULL UNIQUE,
 	email TEXT NOT NULL UNIQUE,
 	hashed_password TEXT NOT NULL,
 	is_admin BOOLEAN NOT NULL DEFAULT FALSE,
 	is_verified BOOLEAN NOT NULL DEFAULT FALSE,
 	deleted BOOLEAN NOT NULL DEFAULT FALSE,
 
-    PRIMARY KEY (view_id)
+    PRIMARY KEY (user_id)
 );
-
-CREATE UNIQUE INDEX IF NOT EXISTS user_username_index ON user_query (username);

migrations/20240516203144_verification_otp.sql

@@ -6,6 +6,6 @@ CREATE TABLE IF NOT EXISTS verification_otp (
     secret VARCHAR(32) NOT NULL UNIQUE,
     created_at timestamp with time zone DEFAULT (CURRENT_TIMESTAMP),
     purpose TEXT NOT NULL,
-    username TEXT NOT NULL,
+    user_id UUID NOT NULL,
 	ID SERIAL PRIMARY KEY NOT NULL
 );

migrations/20240713073740_cqrs_inventory_category_query.sql

@@ -15,8 +15,3 @@ CREATE TABLE IF NOT EXISTS cqrs_inventory_category_query
 
     PRIMARY KEY (category_id)
 );
-
-CREATE UNIQUE INDEX IF NOT EXISTS
-    cqrs_inventory_store_query_category_id_index
-ON
-    cqrs_inventory_category_query (category_id);

migrations/20240713080804_cqrs_inventory_store_query.sql

@@ -8,11 +8,9 @@ CREATE TABLE IF NOT EXISTS cqrs_inventory_store_query
 
 	name TEXT NOT NULL,
 	address TEXT,
-	owner TEXT NOT NULL,
+	owner UUID NOT NULL,
 	store_id UUID NOT NULL UNIQUE,
 	deleted BOOLEAN NOT NULL DEFAULT FALSE,
 
     PRIMARY KEY (store_id)
 );
-
-CREATE UNIQUE INDEX IF NOT EXISTS store_store_id_index ON cqrs_inventory_store_query (store_id);

src/identity/adapters/output/db/postgres/create_verification_secret.rs

@@ -11,12 +11,12 @@ use crate::identity::application::port::output::db::{create_verification_secret:
 impl CreateVerificationSecretOutDBPort for DBOutPostgresAdapter {
     async fn create_verification_secret(&self, msg: CreateSecretMsg) -> OutDBPortResult<()> {
         sqlx::query!(
-            "INSERT INTO verification_otp (secret, created_at, purpose, username)
+            "INSERT INTO verification_otp (secret, created_at, purpose, user_id)
             VALUES ($1, $2, $3, $4);",
             &msg.secret,
             OffsetDateTime::now_utc(),
             REGISTRATION_SECRET_PURPOSE,
-            &msg.username,
+            &msg.user_id,
         )
         .execute(&self.pool)
         .await?;
@@ -26,6 +26,8 @@ impl CreateVerificationSecretOutDBPort for DBOutPostgresAdapter {
 
 #[cfg(test)]
 mod tests {
+    use crate::utils::uuid::tests::UUID;
+
     use super::*;
 
     #[actix_rt::test]
@@ -40,7 +42,7 @@ mod tests {
 
         let msg = CreateSecretMsgBuilder::default()
             .secret("secret".into())
-            .username("username".into())
+            .user_id(UUID.clone())
             .build()
             .unwrap();
 

src/identity/adapters/output/db/postgres/delete_verification_secret.rs

@@ -12,12 +12,12 @@ impl DeleteVerificationSecretOutDBPort for DBOutPostgresAdapter {
             "DELETE FROM
                 verification_otp
              WHERE
-                 username = $1
+                 user_id = $1
              AND
                  purpose = $2
              AND
                  secret = $3;",
-            msg.username,
+            msg.user_id,
             REGISTRATION_SECRET_PURPOSE,
             msg.secret,
         )
@@ -30,13 +30,16 @@ impl DeleteVerificationSecretOutDBPort for DBOutPostgresAdapter {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::identity::application::port::output::db::{
+    use crate::{
+        identity::application::port::output::db::{
             create_verification_secret::*, verification_secret_exists::*,
+        },
+        utils::uuid::tests::UUID,
     };
 
     #[actix_rt::test]
     async fn test_postgres_delete_verification_secret() {
-        let username = "batman";
+        let user_id = UUID;
         let secret = "bsdasdf";
         let settings = crate::settings::tests::get_settings().await;
         settings.create_db().await;
@@ -46,7 +49,7 @@ mod tests {
                 .unwrap(),
         );
         let msg = VerifySecretExistsMsgBuilder::default()
-            .username(username.into())
+            .user_id(user_id.clone())
             .secret(secret.into())
             .build()
             .unwrap();
@@ -56,7 +59,7 @@ mod tests {
 
         let create_msg = CreateSecretMsgBuilder::default()
             .secret(secret.into())
-            .username(username.into())
+            .user_id(user_id.clone())
             .build()
             .unwrap();
         db.create_verification_secret(create_msg).await.unwrap();

src/identity/adapters/output/db/postgres/email_exists.rs

@@ -33,6 +33,8 @@ impl EmailExistsOutDBPort for DBOutPostgresAdapter {
 mod tests {
     use super::*;
 
+    use crate::utils::uuid::tests::*;
+
     #[actix_rt::test]
     async fn test_postgres_email_exists() {
         let email = "foo@exmaple.com";
@@ -49,12 +51,13 @@ mod tests {
 
         sqlx::query!(
             "INSERT INTO user_query
-                (view_id, version, username, email, hashed_password)
+                (user_id, version, first_name, email, hashed_password, last_name)
-            VALUES ($1, $2, $3, $4, $5);",
+            VALUES ($1, $2, $3, $4, $5, $6);",
-            "1",
+            &UUID,
             1,
             "foo",
             email,
+            "passwd",
             "passwd"
         )
         .execute(&db.pool)

src/identity/adapters/output/db/postgres/get_verification_secret.rs

@@ -2,13 +2,15 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
+use uuid::Uuid;
+
 use super::errors::*;
 use super::DBOutPostgresAdapter;
 use crate::identity::application::port::output::db::{errors::*, get_verification_secret::*};
 
 #[async_trait::async_trait]
 impl GetVerificationSecretOutDBPort for DBOutPostgresAdapter {
-    async fn get_verification_secret(&self, username: &str) -> OutDBPortResult<String> {
+    async fn get_verification_secret(&self, user_id: &Uuid) -> OutDBPortResult<String> {
         struct Secret {
             secret: String,
         }
@@ -19,10 +21,10 @@ impl GetVerificationSecretOutDBPort for DBOutPostgresAdapter {
              FROM
                 verification_otp
              WHERE
-                 username = $1
+                 user_id = $1
              AND
                  purpose = $2;",
-            username,
+            user_id,
             REGISTRATION_SECRET_PURPOSE,
         )
         .fetch_one(&self.pool)
@@ -35,11 +37,14 @@ impl GetVerificationSecretOutDBPort for DBOutPostgresAdapter {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::identity::application::port::output::db::create_verification_secret::*;
+    use crate::{
+        identity::application::port::output::db::create_verification_secret::*,
+        utils::uuid::tests::UUID,
+    };
 
     #[actix_rt::test]
     async fn test_postgres_get_verification_secret() {
-        let username = "batman";
+        let user_id = UUID;
         let secret = "bsdasdf";
         let settings = crate::settings::tests::get_settings().await;
         settings.create_db().await;
@@ -49,19 +54,19 @@ mod tests {
                 .unwrap(),
         );
         assert_eq!(
-            db.get_verification_secret(username).await.err(),
+            db.get_verification_secret(&user_id).await.err(),
             Some(OutDBPortError::VerificationOTPSecretNotFound)
         );
 
         let create_msg = CreateSecretMsgBuilder::default()
             .secret(secret.into())
-            .username(username.into())
+            .user_id(user_id.clone())
             .build()
             .unwrap();
 
         db.create_verification_secret(create_msg).await.unwrap();
 
-        assert_eq!(db.get_verification_secret(username).await.unwrap(), secret);
+        assert_eq!(db.get_verification_secret(&user_id).await.unwrap(), secret);
 
         settings.drop_db().await;
     }

src/identity/adapters/output/db/postgres/mod.rs

@@ -14,8 +14,8 @@ pub mod delete_verification_secret;
 pub mod email_exists;
 mod errors;
 pub mod get_verification_secret;
+pub mod user_id_exists;
 pub mod user_view;
-pub mod username_exists;
 pub mod verification_secret_exists;
 
 #[derive(Clone)]

src/identity/adapters/output/db/postgres/user_id_exists.rs

@@ -2,22 +2,24 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
+use uuid::Uuid;
+
 use super::DBOutPostgresAdapter;
 use crate::identity::application::port::output::db::{
-    errors::*, username_exists::UsernameExistsOutDBPort,
+    errors::*, user_id_exists::UserIDExistsOutDBPort,
 };
 
 #[async_trait::async_trait]
-impl UsernameExistsOutDBPort for DBOutPostgresAdapter {
+impl UserIDExistsOutDBPort for DBOutPostgresAdapter {
-    async fn username_exists(&self, username: &str) -> OutDBPortResult<bool> {
+    async fn user_id_exists(&self, user_id: &Uuid) -> OutDBPortResult<bool> {
         let res = sqlx::query!(
             "SELECT EXISTS (
                 SELECT 1
                     FROM user_query
                 WHERE
-                    username = $1
+                    user_id = $1
             );",
-            username
+            user_id,
         )
         .fetch_one(&self.pool)
         .await?;
@@ -33,9 +35,12 @@ impl UsernameExistsOutDBPort for DBOutPostgresAdapter {
 mod tests {
     use super::*;
 
+    use crate::utils::uuid::tests::UUID;
+
+    use crate::identity::domain::aggregate::*;
+
     #[actix_rt::test]
-    async fn test_postgres_username_exists() {
+    async fn test_postgres_user_id_exists() {
-        let username = "foo@exmaple.com";
         let settings = crate::settings::tests::get_settings().await;
         settings.create_db().await;
         let db = super::DBOutPostgresAdapter::new(
@@ -44,25 +49,28 @@ mod tests {
                 .unwrap(),
         );
 
+        let user = User::default();
+
         // state doesn't exist
-        assert!(!db.username_exists(username).await.unwrap());
+        assert!(!db.user_id_exists(&UUID).await.unwrap());
 
         sqlx::query!(
             "INSERT INTO user_query
-                (view_id, version, username, email, hashed_password)
+                (version, user_id, email, hashed_password, first_name, last_name)
-            VALUES ($1, $2, $3, $4, $5);",
+            VALUES ($1, $2, $3, $4, $5, $6);",
-            "1",
             1,
-            username,
+            UUID,
-            "foo",
+            user.email(),
-            "passwd"
+            user.hashed_password(),
+            user.first_name(),
+            user.last_name(),
         )
         .execute(&db.pool)
         .await
         .unwrap();
 
         // state exists
-        assert!(db.username_exists(username).await.unwrap());
+        assert!(db.user_id_exists(&UUID).await.unwrap());
 
         settings.drop_db().await;
     }

src/identity/adapters/output/db/postgres/user_view.rs

@@ -6,18 +6,24 @@ use async_trait::async_trait;
 use cqrs_es::persist::GenericQuery;
 use cqrs_es::persist::{PersistenceError, ViewContext, ViewRepository};
 use cqrs_es::{EventEnvelope, Query, View};
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 use super::errors::*;
 use super::DBOutPostgresAdapter;
 use crate::identity::application::services::events::UserEvent;
 use crate::identity::domain::aggregate::User;
-use serde::{Deserialize, Serialize};
+use crate::utils::parse_aggregate_id::parse_aggregate_id;
+
+pub const NEW_USER_NON_UUID: &str = "new_user_non_uuid-asdfa";
 
 // The view for a User query, for a standard http application this should
 // be designed to reflect the response dto that will be returned to a user.
 #[derive(Debug, Default, Serialize, Deserialize)]
 pub struct UserView {
-    username: String,
+    first_name: String,
+    last_name: String,
+    user_id: Uuid,
     email: String,
     hashed_password: String,
     is_admin: bool,
@@ -32,12 +38,14 @@ impl View<User> for UserView {
     fn update(&mut self, event: &EventEnvelope<User>) {
         match &event.payload {
             UserEvent::UserRegistered(val) => {
-                self.username = val.username().into();
                 self.email = val.email().into();
                 self.hashed_password = val.hashed_password().into();
                 self.is_admin = val.is_admin().to_owned();
                 self.is_verified = val.is_verified().to_owned();
                 self.deleted = false;
+                self.first_name = val.first_name().into();
+                self.last_name = val.last_name().into();
+                self.user_id = val.user_id().clone();
             }
             UserEvent::UserDeleted => self.deleted = true,
             UserEvent::Loggedin(_) => (),
@@ -58,16 +66,21 @@ impl View<User> for UserView {
 
 #[async_trait]
 impl ViewRepository<UserView, User> for DBOutPostgresAdapter {
-    async fn load(&self, view_id: &str) -> Result<Option<UserView>, PersistenceError> {
+    async fn load(&self, user_id: &str) -> Result<Option<UserView>, PersistenceError> {
+        let user_id = match parse_aggregate_id(user_id, NEW_USER_NON_UUID)? {
+            Some((val, _)) => return Ok(Some(val)),
+            None => Uuid::parse_str(user_id).unwrap(),
+        };
+
         let res = sqlx::query_as!(
             UserView,
             "SELECT 
-                username, email, hashed_password, is_admin, is_verified, deleted
+                first_name, last_name, user_id, email, hashed_password, is_admin, is_verified, deleted
              FROM
                 user_query
             WHERE
-                view_id = $1;",
+                user_id = $1;",
-            view_id
+            user_id
         )
         .fetch_one(&self.pool)
         .await
@@ -77,17 +90,22 @@ impl ViewRepository<UserView, User> for DBOutPostgresAdapter {
 
     async fn load_with_context(
         &self,
-        view_id: &str,
+        user_id: &str,
     ) -> Result<Option<(UserView, ViewContext)>, PersistenceError> {
+        let user_id = match parse_aggregate_id(user_id, NEW_USER_NON_UUID)? {
+            Some(val) => return Ok(Some(val)),
+            None => Uuid::parse_str(user_id).unwrap(),
+        };
+
         let res = sqlx::query_as!(
             UserView,
             "SELECT 
-                username, email, hashed_password, is_admin, is_verified, deleted
+                first_name, last_name, user_id, email, hashed_password, is_admin, is_verified, deleted
              FROM
                 user_query
             WHERE
-                view_id = $1;",
+                user_id = $1;",
-            view_id
+            user_id
         )
         .fetch_one(&self.pool)
         .await
@@ -95,24 +113,24 @@ impl ViewRepository<UserView, User> for DBOutPostgresAdapter {
 
         struct Context {
             version: i64,
-            view_id: String,
+            user_id: String,
         }
 
         let ctx = sqlx::query_as!(
             Context,
             "SELECT 
-                view_id, version
+                user_id, version
              FROM
                 user_query
             WHERE
-                view_id = $1;",
+                user_id = $1;",
-            view_id
+            user_id
         )
         .fetch_one(&self.pool)
         .await
         .map_err(PostgresAggregateError::from)?;
 
-        let view_context = ViewContext::new(ctx.view_id, ctx.version);
+        let view_context = ViewContext::new(ctx.user_id.to_string(), ctx.version);
         Ok(Some((res, view_context)))
     }
 
@@ -126,19 +144,20 @@ impl ViewRepository<UserView, User> for DBOutPostgresAdapter {
                 let version = context.version + 1;
                 sqlx::query!(
                     "INSERT INTO user_query (
-                        view_id, version, username, email,
+                        version, first_name, last_name, email,
-                        hashed_password, is_admin, is_verified, deleted
+                        hashed_password, is_admin, is_verified, deleted, user_id
                     ) VALUES (
-                        $1, $2, $3, $4, $5, $6, $7, $8
+                        $1, $2, $3, $4, $5, $6, $7, $8, $9
                     );",
-                    context.view_instance_id,
                     version,
-                    view.username,
+                    view.first_name,
+                    view.last_name,
                     view.email,
                     view.hashed_password,
                     view.is_admin,
                     view.is_verified,
                     view.deleted,
+                    view.user_id,
                 )
                 .execute(&self.pool)
                 .await
@@ -150,16 +169,18 @@ impl ViewRepository<UserView, User> for DBOutPostgresAdapter {
                     "UPDATE
                         user_query
                     SET
-                        view_id = $1, version = $2, username = $3, email = $4,
+                        user_id = $1, version = $2, first_name = $3, email = $4,
-                        hashed_password = $5, is_admin = $6, is_verified = $7, deleted = $8;",
+                        hashed_password = $5, is_admin = $6, is_verified = $7, deleted = $8,
-                    context.view_instance_id,
+                        last_name=$9;",
+                    view.user_id,
                     version,
-                    view.username,
+                    view.first_name,
                     view.email,
                     view.hashed_password,
                     view.is_admin,
                     view.is_verified,
                     view.deleted,
+                    view.last_name,
                 )
                 .execute(&self.pool)
                 .await

src/identity/adapters/output/db/postgres/verification_secret_exists.rs

@@ -16,13 +16,13 @@ impl VerificationSecretExistsOutDBPort for DBOutPostgresAdapter {
                 SELECT 1
                     FROM verification_otp
                 WHERE
-                    username = $1
+                    user_id = $1
                 AND
                     purpose = $2
                 AND
                     secret = $3
             );",
-            msg.username,
+            msg.user_id,
             REGISTRATION_SECRET_PURPOSE,
             msg.secret,
         )
@@ -39,11 +39,14 @@ impl VerificationSecretExistsOutDBPort for DBOutPostgresAdapter {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::identity::application::port::output::db::create_verification_secret::*;
+    use crate::{
+        identity::application::port::output::db::create_verification_secret::*,
+        utils::uuid::tests::UUID,
+    };
 
     #[actix_rt::test]
     async fn test_postgres_verification_secret_exists() {
-        let username = "batman";
+        let user_id = UUID;
         let secret = "bsdasdf";
         let settings = crate::settings::tests::get_settings().await;
         settings.create_db().await;
@@ -53,7 +56,7 @@ mod tests {
                 .unwrap(),
         );
         let msg = VerifySecretExistsMsgBuilder::default()
-            .username(username.into())
+            .user_id(user_id.clone())
             .secret(secret.into())
             .build()
             .unwrap();
@@ -63,7 +66,7 @@ mod tests {
 
         let create_msg = CreateSecretMsgBuilder::default()
             .secret(secret.into())
-            .username(username.into())
+            .user_id(user_id.clone())
             .build()
             .unwrap();
         db.create_verification_secret(create_msg).await.unwrap();

src/identity/adapters/output/mailer/lettre/account_validation_link.rs

@@ -12,17 +12,17 @@ impl AccountValidationLinkOutMailerPort for LettreMailer {
     async fn account_validation_link(
         &self,
         to: &str,
-        username: &str,
+        first_name: &str,
         validation_secret: &str,
     ) -> OutMailerPortResult<()> {
         let email = Message::builder()
             .from(self.from.parse().unwrap())
             .reply_to(self.reply_to.parse().unwrap())
-            .to(format!("{username} <{to}>").parse().unwrap())
+            .to(format!("{first_name} <{to}>").parse().unwrap())
             .subject("Please verify your account on Vanikam") // TODO: use better title
             .header(ContentType::TEXT_PLAIN)
             .body(format!(
-                r#"Hello {username},
+                r#"Hello {first_name},
             Please click here to verify your Vanikam account: {validation_secret}
             Warm regards,
             Vanikam Admin

src/identity/application/aggregate.rs

@@ -1,325 +0,0 @@
-// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
-//
-// SPDX-License-Identifier: AGPL-3.0-or-later
-
-use async_trait::async_trait;
-use cqrs_es::Aggregate;
-
-use crate::identity::application::services::errors::*;
-use crate::identity::application::services::events::UserEvent;
-use crate::identity::application::services::UserCommand;
-use crate::identity::application::services::UserServicesInterface;
-use crate::identity::domain::aggregate::User;
-use crate::identity::domain::aggregate::UserBuilder;
-
-#[async_trait]
-impl Aggregate for User {
-    type Command = UserCommand;
-    type Event = UserEvent;
-    type Error = IdentityError;
-    type Services = std::sync::Arc<dyn UserServicesInterface>;
-
-    // This identifier should be unique to the system.
-    fn aggregate_type() -> String {
-        "account".to_string()
-    }
-
-    // The aggregate logic goes here. Note that this will be the _bulk_ of a CQRS system
-    // so expect to use helper functions elsewhere to keep the code clean.
-    async fn handle(
-        &self,
-        command: Self::Command,
-        services: &Self::Services,
-    ) -> Result<Vec<Self::Event>, Self::Error> {
-        match command {
-            UserCommand::RegisterUser(cmd) => {
-                let res = services.register_user().register_user(cmd).await?;
-                Ok(vec![UserEvent::UserRegistered(res)])
-            }
-            UserCommand::DeleteUser(cmd) => {
-                services.delete_user().delete_user(cmd).await;
-                Ok(vec![UserEvent::UserDeleted])
-            }
-            UserCommand::Login(cmd) => {
-                let res = services.login().login(cmd).await;
-                Ok(vec![UserEvent::Loggedin(res)])
-            }
-            UserCommand::UpdatePassword(cmd) => {
-                let res = services.update_password().update_password(cmd).await;
-                Ok(vec![UserEvent::PasswordUpdated(res)])
-            }
-            UserCommand::UpdateEmail(cmd) => {
-                let res = services.update_email().update_email(cmd).await?;
-                Ok(vec![UserEvent::EmailUpdated(res)])
-            }
-            UserCommand::MarkUserVerified(cmd) => {
-                services
-                    .mark_user_verified()
-                    .mark_user_verified(cmd)
-                    .await?;
-                Ok(vec![UserEvent::UserVerified])
-            }
-            UserCommand::SetAdmin(cmd) => {
-                let res = services.set_user_admin().set_user_admin(cmd).await;
-                Ok(vec![UserEvent::UserPromotedToAdmin(res)])
-            }
-            UserCommand::ResendVerificationEmail(cmd) => {
-                services
-                    .resend_verification_email()
-                    .resend_verification_email(cmd)
-                    .await?;
-                Ok(vec![UserEvent::VerificationEmailResent])
-            }
-        }
-    }
-
-    fn apply(&mut self, event: Self::Event) {
-        match event {
-            UserEvent::UserRegistered(e) => {
-                *self = UserBuilder::default()
-                    .username(e.username().into())
-                    .email(e.email().into())
-                    .hashed_password(e.hashed_password().into())
-                    .is_admin(e.is_admin().to_owned())
-                    .email_verified(e.email_verified().to_owned())
-                    .is_verified(e.is_verified().to_owned())
-                    .deleted(false)
-                    .build()
-                    .unwrap();
-            }
-            UserEvent::UserDeleted => {
-                self.set_deleted(true);
-            }
-            UserEvent::Loggedin(_) => (),
-            UserEvent::PasswordUpdated(_) => (),
-            UserEvent::EmailUpdated(e) => {
-                self.set_email(e.new_email().into());
-                self.set_email_verified(false);
-            }
-            UserEvent::UserVerified => {
-                self.set_is_verified(true);
-                self.set_email_verified(true);
-            }
-            UserEvent::UserPromotedToAdmin(_) => {
-                self.set_is_admin(true);
-            }
-            UserEvent::VerificationEmailResent => (),
-        }
-    }
-}
-
-//// The aggregate tests are the most important part of a CQRS system.
-//// The simplicity and flexibility of these tests are a good part of what
-//// makes an event sourced system so friendly to changing business requirements.
-//#[cfg(test)]
-//mod aggregate_tests {
-//    use async_trait::async_trait;
-//    use std::sync::Mutex;
-//
-//    use cqrs_es::test::TestFramework;
-//
-//    use crate::domain::aggregate::User;
-//    use crate::domain::commands::UserCommand;
-//    use crate::domain::events::UserEvent;
-//    use crate::services::{AtmError, UserApi, UserServices, CheckingError};
-//
-//    // A test framework that will apply our events and command
-//    // and verify that the logic works as expected.
-//    type AccountTestFramework = TestFramework<User>;
-//
-//    #[test]
-//    fn test_deposit_money() {
-//        let expected = UserEvent::CustomerDepositedMoney {
-//            amount: 200.0,
-//            balance: 200.0,
-//        };
-//        let command = UserCommand::DepositMoney { amount: 200.0 };
-//        let services = UserServices::new(Box::new(MockUserServices::default()));
-//        // Obtain a new test framework
-//        AccountTestFramework::with(services)
-//            // In a test case with no previous events
-//            .given_no_previous_events()
-//            // Wnen we fire this command
-//            .when(command)
-//            // then we expect these results
-//            .then_expect_events(vec![expected]);
-//    }
-//
-//    #[test]
-//    fn test_deposit_money_with_balance() {
-//        let previous = UserEvent::CustomerDepositedMoney {
-//            amount: 200.0,
-//            balance: 200.0,
-//        };
-//        let expected = UserEvent::CustomerDepositedMoney {
-//            amount: 200.0,
-//            balance: 400.0,
-//        };
-//        let command = UserCommand::DepositMoney { amount: 200.0 };
-//        let services = UserServices::new(Box::new(MockUserServices::default()));
-//
-//        AccountTestFramework::with(services)
-//            // Given this previously applied event
-//            .given(vec![previous])
-//            // When we fire this command
-//            .when(command)
-//            // Then we expect this resultant event
-//            .then_expect_events(vec![expected]);
-//    }
-//
-//    #[test]
-//    fn test_withdraw_money() {
-//        let previous = UserEvent::CustomerDepositedMoney {
-//            amount: 200.0,
-//            balance: 200.0,
-//        };
-//        let expected = UserEvent::CustomerWithdrewCash {
-//            amount: 100.0,
-//            balance: 100.0,
-//        };
-//        let services = MockUserServices::default();
-//        services.set_atm_withdrawal_response(Ok(()));
-//        let command = UserCommand::WithdrawMoney {
-//            amount: 100.0,
-//            atm_id: "ATM34f1ba3c".to_string(),
-//        };
-//
-//        AccountTestFramework::with(UserServices::new(Box::new(services)))
-//            .given(vec![previous])
-//            .when(command)
-//            .then_expect_events(vec![expected]);
-//    }
-//
-//    #[test]
-//    fn test_withdraw_money_client_error() {
-//        let previous = UserEvent::CustomerDepositedMoney {
-//            amount: 200.0,
-//            balance: 200.0,
-//        };
-//        let services = MockUserServices::default();
-//        services.set_atm_withdrawal_response(Err(AtmError));
-//        let command = UserCommand::WithdrawMoney {
-//            amount: 100.0,
-//            atm_id: "ATM34f1ba3c".to_string(),
-//        };
-//
-//        let services = UserServices::new(Box::new(services));
-//        AccountTestFramework::with(services)
-//            .given(vec![previous])
-//            .when(command)
-//            .then_expect_error_message("atm rule violation");
-//    }
-//
-//    #[test]
-//    fn test_withdraw_money_funds_not_available() {
-//        let command = UserCommand::WithdrawMoney {
-//            amount: 200.0,
-//            atm_id: "ATM34f1ba3c".to_string(),
-//        };
-//
-//        let services = UserServices::new(Box::new(MockUserServices::default()));
-//        AccountTestFramework::with(services)
-//            .given_no_previous_events()
-//            .when(command)
-//            // Here we expect an error rather than any events
-//            .then_expect_error_message("funds not available")
-//    }
-//
-//    #[test]
-//    fn test_wrote_check() {
-//        let previous = UserEvent::CustomerDepositedMoney {
-//            amount: 200.0,
-//            balance: 200.0,
-//        };
-//        let expected = UserEvent::CustomerWroteCheck {
-//            check_number: "1170".to_string(),
-//            amount: 100.0,
-//            balance: 100.0,
-//        };
-//        let services = MockUserServices::default();
-//        services.set_validate_check_response(Ok(()));
-//        let services = UserServices::new(Box::new(services));
-//        let command = UserCommand::WriteCheck {
-//            check_number: "1170".to_string(),
-//            amount: 100.0,
-//        };
-//
-//        AccountTestFramework::with(services)
-//            .given(vec![previous])
-//            .when(command)
-//            .then_expect_events(vec![expected]);
-//    }
-//
-//    #[test]
-//    fn test_wrote_check_bad_check() {
-//        let previous = UserEvent::CustomerDepositedMoney {
-//            amount: 200.0,
-//            balance: 200.0,
-//        };
-//        let services = MockUserServices::default();
-//        services.set_validate_check_response(Err(CheckingError));
-//        let services = UserServices::new(Box::new(services));
-//        let command = UserCommand::WriteCheck {
-//            check_number: "1170".to_string(),
-//            amount: 100.0,
-//        };
-//
-//        AccountTestFramework::with(services)
-//            .given(vec![previous])
-//            .when(command)
-//            .then_expect_error_message("check invalid");
-//    }
-//
-//    #[test]
-//    fn test_wrote_check_funds_not_available() {
-//        let command = UserCommand::WriteCheck {
-//            check_number: "1170".to_string(),
-//            amount: 100.0,
-//        };
-//
-//        let services = UserServices::new(Box::new(MockUserServices::default()));
-//        AccountTestFramework::with(services)
-//            .given_no_previous_events()
-//            .when(command)
-//            .then_expect_error_message("funds not available")
-//    }
-//
-//    pub struct MockUserServices {
-//        atm_withdrawal_response: Mutex<Option<Result<(), AtmError>>>,
-//        validate_check_response: Mutex<Option<Result<(), CheckingError>>>,
-//    }
-//
-//    impl Default for MockUserServices {
-//        fn default() -> Self {
-//            Self {
-//                atm_withdrawal_response: Mutex::new(None),
-//                validate_check_response: Mutex::new(None),
-//            }
-//        }
-//    }
-//
-//    impl MockUserServices {
-//        fn set_atm_withdrawal_response(&self, response: Result<(), AtmError>) {
-//            *self.atm_withdrawal_response.lock().unwrap() = Some(response);
-//        }
-//        fn set_validate_check_response(&self, response: Result<(), CheckingError>) {
-//            *self.validate_check_response.lock().unwrap() = Some(response);
-//        }
-//    }
-//
-//    #[async_trait]
-//    impl UserApi for MockUserServices {
-//        async fn atm_withdrawal(&self, _atm_id: &str, _amount: f64) -> Result<(), AtmError> {
-//            self.atm_withdrawal_response.lock().unwrap().take().unwrap()
-//        }
-//
-//        async fn validate_check(
-//            &self,
-//            _account_id: &str,
-//            _check_number: &str,
-//        ) -> Result<(), CheckingError> {
-//            self.validate_check_response.lock().unwrap().take().unwrap()
-//        }
-//    }
-//}
-//

src/identity/application/mod.rs

@@ -2,6 +2,5 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
-pub mod aggregate;
 pub mod port;
 pub mod services;

src/identity/application/port/output/db/create_verification_secret.rs

@@ -6,6 +6,7 @@ use derive_builder::Builder;
 use mockall::predicate::*;
 use mockall::*;
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 use super::errors::*;
 #[cfg(test)]
@@ -15,7 +16,7 @@ pub use tests::*;
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord, Builder)]
 pub struct CreateSecretMsg {
     pub secret: String,
-    pub username: String,
+    pub user_id: Uuid,
 }
 pub const REGISTRATION_SECRET_PURPOSE: &str = "account_validation";
 

src/identity/application/port/output/db/delete_verification_secret.rs

@@ -6,6 +6,7 @@ use derive_builder::Builder;
 use mockall::predicate::*;
 use mockall::*;
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 pub use super::create_verification_secret::REGISTRATION_SECRET_PURPOSE;
 use super::errors::*;
@@ -16,14 +17,14 @@ pub use tests::*;
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord, Builder)]
 pub struct DeleteSecretMsg {
     pub secret: String,
-    pub username: String,
+    pub user_id: Uuid,
 }
 
 impl From<super::verification_secret_exists::VerifySecretExistsMsg> for DeleteSecretMsg {
     fn from(value: super::verification_secret_exists::VerifySecretExistsMsg) -> Self {
         Self {
             secret: value.secret,
-            username: value.username,
+            user_id: value.user_id,
         }
     }
 }

src/identity/application/port/output/db/get_verification_secret.rs

@@ -4,6 +4,7 @@
 
 use mockall::predicate::*;
 use mockall::*;
+use uuid::Uuid;
 
 pub use super::create_verification_secret::REGISTRATION_SECRET_PURPOSE;
 use super::errors::*;
@@ -14,7 +15,7 @@ pub use tests::*;
 #[automock]
 #[async_trait::async_trait]
 pub trait GetVerificationSecretOutDBPort: Send + Sync {
-    async fn get_verification_secret(&self, username: &str) -> OutDBPortResult<String>;
+    async fn get_verification_secret(&self, user_id: &Uuid) -> OutDBPortResult<String>;
 }
 
 pub type GetVerificationSecretOutDBPortObj = std::sync::Arc<dyn GetVerificationSecretOutDBPort>;

src/identity/application/port/output/db/mod.rs

@@ -7,5 +7,5 @@ pub mod delete_verification_secret;
 pub mod email_exists;
 pub mod errors;
 pub mod get_verification_secret;
-pub mod username_exists;
+pub mod user_id_exists;
 pub mod verification_secret_exists;

src/identity/application/port/output/db/user_id_exists.rs

@@ -4,6 +4,7 @@
 
 use mockall::predicate::*;
 use mockall::*;
+use uuid::Uuid;
 
 use super::errors::*;
 #[cfg(test)]
@@ -12,11 +13,11 @@ pub use tests::*;
 
 #[automock]
 #[async_trait::async_trait]
-pub trait UsernameExistsOutDBPort: Send + Sync {
+pub trait UserIDExistsOutDBPort: Send + Sync {
-    async fn username_exists(&self, username: &str) -> OutDBPortResult<bool>;
+    async fn user_id_exists(&self, user_id: &Uuid) -> OutDBPortResult<bool>;
 }
 
-pub type UsernameExistsOutDBPortObj = std::sync::Arc<dyn UsernameExistsOutDBPort>;
+pub type UserIDExistsOutDBPortObj = std::sync::Arc<dyn UserIDExistsOutDBPort>;
 
 #[cfg(test)]
 pub mod tests {
@@ -24,17 +25,17 @@ pub mod tests {
 
     use std::sync::Arc;
 
-    pub fn mock_username_exists_db_port(
+    pub fn mock_user_id_exists_db_port(
         times: Option<usize>,
         returning: bool,
-    ) -> UsernameExistsOutDBPortObj {
+    ) -> UserIDExistsOutDBPortObj {
-        let mut m = MockUsernameExistsOutDBPort::new();
+        let mut m = MockUserIDExistsOutDBPort::new();
         if let Some(times) = times {
-            m.expect_username_exists()
+            m.expect_user_id_exists()
                 .times(times)
                 .returning(move |_| Ok(returning));
         } else {
-            m.expect_username_exists().returning(move |_| Ok(returning));
+            m.expect_user_id_exists().returning(move |_| Ok(returning));
         }
 
         Arc::new(m)

src/identity/application/port/output/db/verification_secret_exists.rs

@@ -6,6 +6,7 @@ use derive_builder::Builder;
 use mockall::predicate::*;
 use mockall::*;
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 pub use super::create_verification_secret::REGISTRATION_SECRET_PURPOSE;
 use super::errors::*;
@@ -16,7 +17,7 @@ pub use tests::*;
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord, Builder)]
 pub struct VerifySecretExistsMsg {
     pub secret: String,
-    pub username: String,
+    pub user_id: Uuid,
 }
 
 #[automock]

src/identity/application/port/output/mailer/account_validation_link.rs

@@ -16,7 +16,7 @@ pub trait AccountValidationLinkOutMailerPort: Send + Sync {
     async fn account_validation_link(
         &self,
         to: &str,
-        username: &str,
+        first_name: &str,
         validation_secret: &str,
     ) -> OutMailerPortResult<()>;
 }

src/identity/application/services/errors.rs

@@ -30,13 +30,10 @@ pub enum IdentityCommandError {
 impl From<CredsError> for IdentityCommandError {
     fn from(v: CredsError) -> Self {
         match v {
-            CredsError::ProfainityError => Self::BadUsername(v.to_string()),
-            CredsError::UsernameCaseMappedError => Self::BadUsername(v.to_string()),
-            CredsError::BlacklistError => Self::BadUsername(v.to_string()),
             CredsError::NotAnEmail => Self::BadEmail,
             CredsError::PasswordTooShort => Self::BadPassowrd(v.to_string()),
             CredsError::PasswordTooLong => Self::BadPassowrd(v.to_string()),
-            CredsError::Argon2Error(e) => Self::BadUsername(e.to_string()),
+            _ => Self::BadUsername(v.to_string()),
         }
     }
 }

src/identity/application/services/mark_user_verified/command.rs

@@ -5,29 +5,32 @@
 use super::*;
 use derive_getters::Getters;
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 #[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters)]
 pub struct MarkUserVerifiedCommand {
-    username: String,
+    user_id: Uuid,
     secret: String,
 }
 
 impl MarkUserVerifiedCommand {
-    pub fn new(username: String, secret: String) -> IdentityCommandResult<Self> {
+    pub fn new(user_id: Uuid, secret: String) -> IdentityCommandResult<Self> {
-        Ok(Self { username, secret })
+        Ok(Self { user_id, secret })
     }
 }
 
 #[cfg(test)]
 mod tests {
+    use crate::utils::uuid::tests::UUID;
+
     use super::*;
 
     #[test]
     fn test_cmd() {
-        let username = "realaravinth";
+        let user_id = UUID;
         let secret = "asdfasdf";
-        let cmd = MarkUserVerifiedCommand::new(username.into(), secret.into()).unwrap();
+        let cmd = MarkUserVerifiedCommand::new(user_id.clone(), secret.into()).unwrap();
-        assert_eq!(cmd.username(), username);
+        assert_eq!(cmd.user_id(), &user_id);
         assert_eq!(cmd.secret(), secret);
     }
 }

src/identity/application/services/mark_user_verified/service.rs

@@ -22,7 +22,7 @@ impl MarkUserVerifiedUseCase for MarkUserVerifiedService {
         cmd: command::MarkUserVerifiedCommand,
     ) -> IdentityResult<()> {
         let msg = VerifySecretExistsMsgBuilder::default()
-            .username(cmd.username().into())
+            .user_id(cmd.user_id().clone())
             .secret(cmd.secret().into())
             .build()
             .unwrap();
@@ -48,13 +48,13 @@ impl MarkUserVerifiedUseCase for MarkUserVerifiedService {
 mod tests {
     use super::*;
 
-    use crate::tests::bdd::*;
+    use crate::{tests::bdd::*, utils::uuid::tests::UUID};
 
     #[actix_rt::test]
     async fn test_service() {
-        let username = "realaravinth";
+        let user_id = UUID;
         let secret = "password";
-        let cmd = command::MarkUserVerifiedCommand::new(username.into(), secret.into()).unwrap();
+        let cmd = command::MarkUserVerifiedCommand::new(user_id.clone(), secret.into()).unwrap();
 
         // happy case
         {

src/identity/application/services/register_user/command.rs

@@ -3,35 +3,45 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 use super::*;
+use derive_builder::Builder;
 use derive_getters::Getters;
 use serde::{Deserialize, Serialize};
 
+#[derive(
+    Clone, Debug, Serialize, Deserialize, Builder, Eq, PartialEq, Ord, PartialOrd, Getters,
+)]
+pub struct UnvalidatedRegisterUserCommand {
+    first_name: String,
+    last_name: String,
+    email: String,
+    password: String,
+    confirm_password: String,
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters)]
 pub struct RegisterUserCommand {
-    username: String,
+    first_name: String,
+    last_name: String,
     email: String,
     hashed_password: String,
 }
 
-impl RegisterUserCommand {
+impl UnvalidatedRegisterUserCommand {
-    pub fn new(
+    pub fn validate(
-        username: String,
+        self,
-        email: String,
-        password: String,
-        confirm_password: String,
         config: &argon2_creds::Config,
-    ) -> IdentityCommandResult<Self> {
+    ) -> IdentityCommandResult<RegisterUserCommand> {
-        let username = config.username(&username)?;
+        config.email(&self.email)?;
-        config.email(&email)?;
 
-        if password != confirm_password {
+        if self.password != self.confirm_password {
             return Err(IdentityCommandError::PasswordsDontMatch);
         }
-        let hashed_password: String = config.password(&password)?;
+        let hashed_password: String = config.password(&self.password)?;
 
-        Ok(Self {
+        Ok(RegisterUserCommand {
-            username,
+            first_name: self.first_name,
-            email,
+            last_name: self.last_name,
+            email: self.email,
             hashed_password,
         })
     }
@@ -44,49 +54,47 @@ mod tests {
     #[test]
     fn test_cmd() {
         let config = argon2_creds::Config::default();
-        RegisterUserCommand::new(
+        let first_name = "John";
-            "realaravinth".into(),
+        let last_name = "Doe";
-            "realaravinth@example.com".into(),
+        let email = "john@example.com";
-            "asdfasdfasdfasdf".into(),
+        let password = "sadfasdfasdf";
-            "asdfasdfasdfasdf".into(),
+        let wrong_password = "sadfasdfasdf--wrong";
-            &config,
+
-        )
+        UnvalidatedRegisterUserCommandBuilder::default()
+            .first_name(first_name.into())
+            .last_name(last_name.into())
+            .email(email.into())
+            .password(password.into())
+            .confirm_password(password.into())
+            .build()
+            .unwrap()
+            .validate(&config)
             .unwrap();
 
         assert_eq!(
-            RegisterUserCommand::new(
+            UnvalidatedRegisterUserCommandBuilder::default()
-                "realaravinth".into(),
+                .first_name(first_name.into())
-                "username".into(),
+                .last_name(last_name.into())
-                "password".into(),
+                .email(first_name.into())
-                "password".into(),
+                .password(password.into())
-                &config,
+                .confirm_password(password.into())
-            )
+                .build()
-            .err(),
+                .unwrap()
-            Some(IdentityCommandError::BadEmail)
+                .validate(&config),
+            Err(IdentityCommandError::BadEmail)
         );
 
-        assert!(matches!(
-            RegisterUserCommand::new(
-                "username".into(),
-                "username@example.com".into(),
-                "password".into(),
-                "password".into(),
-                &config,
-            )
-            .err(),
-            Some(IdentityCommandError::BadUsername(_))
-        ));
-
         assert_eq!(
-            RegisterUserCommand::new(
+            UnvalidatedRegisterUserCommandBuilder::default()
-                "realaravinth".into(),
+                .first_name(first_name.into())
-                "realaravinth@example.com".into(),
+                .last_name(last_name.into())
-                "password".into(),
+                .email(email.into())
-                "mismatch_password".into(),
+                .password(password.into())
-                &config,
+                .confirm_password(wrong_password.into())
-            )
+                .build()
-            .err(),
+                .unwrap()
-            Some(IdentityCommandError::PasswordsDontMatch)
+                .validate(&config),
+            Err(IdentityCommandError::PasswordsDontMatch)
         );
     }
 }

src/identity/application/services/register_user/events.rs

@@ -5,12 +5,15 @@
 use derive_builder::Builder;
 use derive_getters::Getters;
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 #[derive(
     Clone, Debug, Builder, Serialize, Deserialize, Getters, Eq, PartialEq, Ord, PartialOrd,
 )]
 pub struct UserRegisteredEvent {
-    username: String,
+    first_name: String,
+    last_name: String,
+    user_id: Uuid,
     email: String,
     hashed_password: String,
     is_verified: bool,

src/identity/application/services/register_user/service.rs

@@ -7,10 +7,10 @@ use derive_builder::Builder;
 
 use super::*;
 use crate::identity::application::port::output::{
-    db::{create_verification_secret::*, email_exists::*, username_exists::*},
+    db::{create_verification_secret::*, email_exists::*, user_id_exists::*},
     mailer::account_validation_link::*,
 };
-use crate::utils::random_string::*;
+use crate::utils::{random_string::*, uuid::*};
 
 pub const SECRET_LEN: usize = 20;
 pub const REGISTRATION_SECRET_PURPOSE: &str = "account_validation";
@@ -18,9 +18,10 @@ pub const REGISTRATION_SECRET_PURPOSE: &str = "account_validation";
 #[derive(Builder)]
 pub struct RegisterUserService {
     db_email_exists_adapter: EmailExistsOutDBPortObj,
-    db_username_exists_adapter: UsernameExistsOutDBPortObj,
+    db_user_id_exists_adapter: UserIDExistsOutDBPortObj,
     db_create_verification_secret_adapter: CreateVerificationSecretOutDBPortObj,
     mailer_account_validation_link_adapter: AccountValidationLinkOutMailerPortObj,
+    get_uuid: GetUUIDInterfaceObj,
     random_string_adapter: GenerateRandomStringInterfaceObj,
 }
 
@@ -30,15 +31,6 @@ impl RegisterUserUseCase for RegisterUserService {
         &self,
         cmd: command::RegisterUserCommand,
     ) -> IdentityResult<events::UserRegisteredEvent> {
-        if self
-            .db_username_exists_adapter
-            .username_exists(cmd.username())
-            .await
-            .unwrap()
-        {
-            return Err(IdentityError::DuplicateUsername);
-        }
-
         if self
             .db_email_exists_adapter
             .email_exists(cmd.email())
@@ -48,13 +40,27 @@ impl RegisterUserUseCase for RegisterUserService {
             return Err(IdentityError::DuplicateEmail);
         }
 
+        let mut user_id = self.get_uuid.get_uuid();
+        loop {
+            if self
+                .db_user_id_exists_adapter
+                .user_id_exists(&user_id)
+                .await
+                .unwrap()
+            {
+                user_id = self.get_uuid.get_uuid();
+            } else {
+                break;
+            }
+        }
+
         let secret = self.random_string_adapter.get_random(SECRET_LEN);
 
         self.db_create_verification_secret_adapter
             .create_verification_secret(
                 CreateSecretMsgBuilder::default()
                     .secret(secret.clone())
-                    .username(cmd.username().into())
+                    .user_id(user_id.clone())
                     .build()
                     .unwrap(),
             )
@@ -62,12 +68,14 @@ impl RegisterUserUseCase for RegisterUserService {
             .unwrap();
 
         self.mailer_account_validation_link_adapter
-            .account_validation_link(cmd.email(), cmd.username(), &secret)
+            .account_validation_link(cmd.email(), cmd.first_name(), &secret)
             .await
             .unwrap();
 
         Ok(events::UserRegisteredEventBuilder::default()
-            .username(cmd.username().into())
+            .first_name(cmd.first_name().into())
+            .last_name(cmd.last_name().into())
+            .user_id(user_id)
             .email(cmd.email().into())
             .hashed_password(cmd.hashed_password().into())
             .is_verified(false)
@@ -84,6 +92,7 @@ mod tests {
 
     use crate::tests::bdd::*;
     use crate::utils::random_string::tests::*;
+    use crate::utils::uuid::tests::*;
 
     #[actix_rt::test]
     async fn test_service() {
@@ -91,19 +100,19 @@ mod tests {
         let email = format!("{username}@example.com");
         let password = "password";
         let config = argon2_creds::Config::default();
-        let cmd = command::RegisterUserCommand::new(
+        let cmd = command::UnvalidatedRegisterUserCommandBuilder::default()
-            username.into(),
+            .first_name(username.into())
-            email.clone(),
+            .last_name(username.into())
-            password.into(),
+            .email(email.into())
-            password.into(),
+            .password(password.into())
-            &config,
+            .confirm_password(password.into())
-        )
+            .build()
+            .unwrap()
+            .validate(&config)
             .unwrap();
 
-        // happy case
-        {
         let s = RegisterUserServiceBuilder::default()
-                .db_username_exists_adapter(mock_username_exists_db_port(
+            .db_user_id_exists_adapter(mock_user_id_exists_db_port(
                 IS_CALLED_ONLY_ONCE,
                 RETURNS_FALSE,
             ))
@@ -121,57 +130,44 @@ mod tests {
             .mailer_account_validation_link_adapter(mock_account_validation_link_db_port(
                 IS_CALLED_ONLY_ONCE,
             ))
+            .get_uuid(mock_get_uuid(IS_CALLED_ONLY_ONCE))
             .build()
             .unwrap();
 
         let res = s.register_user(cmd.clone()).await.unwrap();
-            assert_eq!(res.username(), cmd.username());
+        assert_eq!(res.first_name(), cmd.first_name());
+        assert_eq!(res.last_name(), cmd.last_name());
+        assert_eq!(res.user_id(), &UUID);
         assert_eq!(res.email(), cmd.email());
         assert!(!res.is_admin());
         assert!(argon2_creds::Config::verify(res.hashed_password(), password).unwrap())
     }
-
+    #[actix_rt::test]
-        // username exists
+    async fn test_service_email_exists() {
-        {
+        let username = "realaravinth";
-            let s = RegisterUserServiceBuilder::default()
+        let email = format!("{username}@example.com");
-                .db_username_exists_adapter(mock_username_exists_db_port(
+        let password = "password";
-                    IS_CALLED_ONLY_ONCE,
+        let config = argon2_creds::Config::default();
-                    RETURNS_TRUE,
+        let cmd = command::UnvalidatedRegisterUserCommandBuilder::default()
-                ))
+            .first_name(username.into())
-                .db_email_exists_adapter(mock_email_exists_db_port(IS_NEVER_CALLED, RETURNS_FALSE))
+            .last_name(username.into())
-                .db_create_verification_secret_adapter(mock_create_verification_secret_db_port(
+            .email(email.into())
-                    IS_NEVER_CALLED,
+            .password(password.into())
-                ))
+            .confirm_password(password.into())
-                .random_string_adapter(mock_generate_random_string(
-                    IS_NEVER_CALLED,
-                    RETURNS_RANDOM_STRING.into(),
-                ))
-                .mailer_account_validation_link_adapter(mock_account_validation_link_db_port(
-                    IS_NEVER_CALLED,
-                ))
             .build()
+            .unwrap()
+            .validate(&config)
             .unwrap();
 
-            assert_eq!(
-                s.register_user(cmd.clone()).await.err(),
-                Some(IdentityError::DuplicateUsername)
-            );
-        }
-
-        // email exists
-        {
         let s = RegisterUserServiceBuilder::default()
-                .db_username_exists_adapter(mock_username_exists_db_port(
+            .db_user_id_exists_adapter(mock_user_id_exists_db_port(
-                    IS_CALLED_ONLY_ONCE,
+                IGNORE_CALL_COUNT,
                 RETURNS_FALSE,
             ))
             .db_create_verification_secret_adapter(mock_create_verification_secret_db_port(
                 IS_NEVER_CALLED,
             ))
-                .db_email_exists_adapter(mock_email_exists_db_port(
+            .db_email_exists_adapter(mock_email_exists_db_port(IS_CALLED_ONLY_ONCE, RETURNS_TRUE))
-                    IS_CALLED_ONLY_ONCE,
-                    RETURNS_TRUE,
-                ))
             .random_string_adapter(mock_generate_random_string(
                 IS_NEVER_CALLED,
                 RETURNS_RANDOM_STRING.into(),
@@ -179,6 +175,7 @@ mod tests {
             .mailer_account_validation_link_adapter(mock_account_validation_link_db_port(
                 IS_NEVER_CALLED,
             ))
+            .get_uuid(mock_get_uuid(IS_NEVER_CALLED))
             .build()
             .unwrap();
 
@@ -187,5 +184,4 @@ mod tests {
             Some(IdentityError::DuplicateEmail)
         );
     }
-    }
 }

src/identity/application/services/resend_verification_email/command.rs

@@ -5,54 +5,58 @@
 use super::*;
 use derive_getters::Getters;
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 #[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters)]
 pub struct ResendVerificationEmailCommand {
-    username: String,
+    user_id: Uuid,
+    first_name: String,
     email: String,
 }
 
 impl ResendVerificationEmailCommand {
     pub fn new(
-        username: String,
+        user_id: Uuid,
+        first_name: String,
         email: String,
         config: &argon2_creds::Config,
     ) -> IdentityCommandResult<Self> {
-        let username = config.username(&username)?;
         config.email(&email)?;
 
-        Ok(Self { username, email })
+        Ok(Self {
+            user_id,
+            first_name,
+            email,
+        })
     }
 }
 
 #[cfg(test)]
 mod tests {
+    use crate::utils::uuid::tests::UUID;
+
     use super::*;
 
     #[test]
     fn test_cmd() {
         let config = argon2_creds::Config::default();
         ResendVerificationEmailCommand::new(
-            "realaravinth".into(),
+            UUID.clone(),
+            "john".into(),
             "realaravinth@example.com".into(),
             &config,
         )
         .unwrap();
 
         assert_eq!(
-            ResendVerificationEmailCommand::new("realaravinth".into(), "username".into(), &config,)
+            ResendVerificationEmailCommand::new(
+                UUID.clone(),
+                "john".into(),
+                "john".into(),
+                &config
+            )
             .err(),
             Some(IdentityCommandError::BadEmail)
         );
-
-        assert!(matches!(
-            ResendVerificationEmailCommand::new(
-                "username".into(),
-                "username@example.com".into(),
-                &config,
-            )
-            .err(),
-            Some(IdentityCommandError::BadUsername(_))
-        ));
     }
 }

src/identity/application/services/resend_verification_email/service.rs

@@ -6,14 +6,13 @@ use derive_builder::Builder;
 
 use super::*;
 use crate::identity::application::port::output::{
-    db::{email_exists::*, get_verification_secret::*, username_exists::*},
+    db::{email_exists::*, get_verification_secret::*},
     mailer::account_validation_link::*,
 };
 
 #[derive(Builder)]
 pub struct ResendVerificationEmailService {
     db_email_exists_adapter: EmailExistsOutDBPortObj,
-    db_username_exists_adapter: UsernameExistsOutDBPortObj,
     db_get_verification_secret_adapter: GetVerificationSecretOutDBPortObj,
     mailer_account_validation_link_adapter: AccountValidationLinkOutMailerPortObj,
 }
@@ -24,15 +23,6 @@ impl ResendVerificationEmailUseCase for ResendVerificationEmailService {
         &self,
         cmd: command::ResendVerificationEmailCommand,
     ) -> IdentityResult<()> {
-        if self
-            .db_username_exists_adapter
-            .username_exists(cmd.username())
-            .await
-            .unwrap()
-        {
-            return Err(IdentityError::DuplicateUsername);
-        }
-
         if self
             .db_email_exists_adapter
             .email_exists(cmd.email())
@@ -44,12 +34,12 @@ impl ResendVerificationEmailUseCase for ResendVerificationEmailService {
 
         let secret = self
             .db_get_verification_secret_adapter
-            .get_verification_secret(cmd.username())
+            .get_verification_secret(cmd.user_id())
             .await
             .unwrap();
 
         self.mailer_account_validation_link_adapter
-            .account_validation_link(cmd.email(), cmd.username(), &secret)
+            .account_validation_link(cmd.email(), cmd.first_name(), &secret)
             .await
             .unwrap();
 
@@ -62,25 +52,23 @@ mod tests {
     use super::*;
 
     use crate::tests::bdd::*;
-    use crate::utils::random_string::tests::*;
+    use crate::utils::uuid::tests::UUID;
 
     #[actix_rt::test]
     async fn test_service() {
-        let username = "realaravinth";
+        let user_id = UUID;
-        let email = format!("{username}@example.com");
+        let email = format!("john@example.com");
         let secret = "asdfasdf";
         let config = argon2_creds::Config::default();
-        let cmd =
+        let cmd = command::ResendVerificationEmailCommand::new(
-            command::ResendVerificationEmailCommand::new(username.into(), email.clone(), &config)
+            UUID.clone(),
+            "john".into(),
+            email.clone(),
+            &config,
+        )
         .unwrap();
 
-        // happy case
-        {
         let s = ResendVerificationEmailServiceBuilder::default()
-                .db_username_exists_adapter(mock_username_exists_db_port(
-                    IS_CALLED_ONLY_ONCE,
-                    RETURNS_FALSE,
-                ))
             .db_get_verification_secret_adapter(mock_get_verification_secret_db_port(
                 IS_CALLED_ONLY_ONCE,
                 secret.into(),
@@ -97,46 +85,26 @@ mod tests {
 
         s.resend_verification_email(cmd.clone()).await.unwrap();
     }
-
+    #[actix_rt::test]
-        // username exists
+    async fn test_service_email_exists() {
-        {
+        let user_id = UUID;
-            let s = ResendVerificationEmailServiceBuilder::default()
+        let email = format!("john@example.com");
-                .db_username_exists_adapter(mock_username_exists_db_port(
+        let secret = "asdfasdf";
-                    IS_CALLED_ONLY_ONCE,
+        let config = argon2_creds::Config::default();
-                    RETURNS_TRUE,
+        let cmd = command::ResendVerificationEmailCommand::new(
-                ))
+            UUID.clone(),
-                .db_email_exists_adapter(mock_email_exists_db_port(IS_NEVER_CALLED, RETURNS_FALSE))
+            "john".into(),
-                .db_get_verification_secret_adapter(mock_get_verification_secret_db_port(
+            email.clone(),
-                    IS_NEVER_CALLED,
+            &config,
-                    secret.into(),
+        )
-                ))
-                .mailer_account_validation_link_adapter(mock_account_validation_link_db_port(
-                    IS_NEVER_CALLED,
-                ))
-                .build()
         .unwrap();
 
-            assert_eq!(
-                s.resend_verification_email(cmd.clone()).await.err(),
-                Some(IdentityError::DuplicateUsername)
-            );
-        }
-
-        // email exists
-        {
         let s = ResendVerificationEmailServiceBuilder::default()
-                .db_username_exists_adapter(mock_username_exists_db_port(
-                    IS_CALLED_ONLY_ONCE,
-                    RETURNS_FALSE,
-                ))
             .db_get_verification_secret_adapter(mock_get_verification_secret_db_port(
                 IS_NEVER_CALLED,
                 secret.into(),
             ))
-                .db_email_exists_adapter(mock_email_exists_db_port(
+            .db_email_exists_adapter(mock_email_exists_db_port(IS_CALLED_ONLY_ONCE, RETURNS_TRUE))
-                    IS_CALLED_ONLY_ONCE,
-                    RETURNS_TRUE,
-                ))
             .mailer_account_validation_link_adapter(mock_account_validation_link_db_port(
                 IS_NEVER_CALLED,
             ))
@@ -148,5 +116,4 @@ mod tests {
             Some(IdentityError::DuplicateEmail)
         );
     }
-    }
 }

src/identity/application/services/set_user_admin/command.rs

@@ -26,6 +26,7 @@ impl SetAdminCommand {
 #[cfg(test)]
 mod tests {
     use crate::identity::domain::aggregate::UserBuilder;
+    use crate::utils::uuid::tests::UUID;
 
     use super::*;
 
@@ -35,13 +36,15 @@ mod tests {
 
         SetAdminCommand::new(
             UserBuilder::default()
-                .username(username.into())
+                .first_name(username.into())
+                .last_name(username.into())
                 .email(username.into())
                 .hashed_password(username.into())
                 .is_verified(true)
                 .email_verified(false)
                 .is_admin(true)
                 .deleted(false)
+                .user_id(UUID.clone())
                 .build()
                 .unwrap(),
         )
@@ -50,13 +53,15 @@ mod tests {
         assert_eq!(
             SetAdminCommand::new(
                 UserBuilder::default()
-                    .username(username.into())
+                    .first_name(username.into())
+                    .last_name(username.into())
                     .email(username.into())
                     .hashed_password(username.into())
                     .is_verified(true)
                     .is_admin(false)
                     .email_verified(false)
                     .deleted(false)
+                    .user_id(UUID.clone())
                     .build()
                     .unwrap(),
             )

src/identity/application/services/set_user_admin/service.rs

@@ -20,6 +20,7 @@ impl SetUserAdminUseCase for SetUserAdminService {
 #[cfg(test)]
 mod tests {
     use crate::identity::domain::aggregate::UserBuilder;
+    use crate::utils::uuid::tests::UUID;
 
     use super::*;
 
@@ -29,13 +30,15 @@ mod tests {
 
         let s = SetUserAdminService;
         let u = UserBuilder::default()
-            .username(username.into())
+            .first_name(username.into())
+            .last_name(username.into())
             .email(username.into())
             .hashed_password(username.into())
             .is_verified(true)
             .email_verified(false)
             .is_admin(true)
             .deleted(false)
+            .user_id(UUID.clone())
             .build()
             .unwrap();
 

src/identity/application/services/update_email/command.rs

@@ -4,19 +4,22 @@
 
 use derive_getters::Getters;
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 use super::*;
 
 #[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters)]
 pub struct UpdateEmailCommand {
     new_email: String,
-    username: String,
+    user_id: Uuid,
+    first_name: String,
 }
 
 impl UpdateEmailCommand {
     pub fn new(
-        username: String,
         new_email: String,
+        user_id: Uuid,
+        first_name: String,
         supplied_password: String,
         actual_password_hash: &str,
         config: &argon2_creds::Config,
@@ -27,27 +30,32 @@ impl UpdateEmailCommand {
         config.email(&new_email)?;
 
         Ok(Self {
-            username,
+            user_id,
             new_email,
+            first_name,
         })
     }
 }
 
 #[cfg(test)]
 mod tests {
+    use crate::utils::uuid::tests::UUID;
+
     use super::*;
 
     #[test]
     fn test_cmd() {
         let config = argon2_creds::Config::default();
         let password = "adsfasdfasd";
-        let username = "realaravinth";
+        let first_name = "john";
+        let user_id = UUID;
         let new_email = format!("newemail@example.com");
         let hashed_password = config.password(password).unwrap();
         assert_eq!(
             UpdateEmailCommand::new(
-                username.into(),
                 new_email.clone(),
+                user_id.clone(),
+                first_name.into(),
                 password.into(),
                 &hashed_password,
                 &config
@@ -60,8 +68,9 @@ mod tests {
         // email is not valid email
         assert_eq!(
             UpdateEmailCommand::new(
-                username.into(),
+                user_id.to_string(),
-                username.into(),
+                user_id.clone(),
+                first_name.into(),
                 password.into(),
                 &hashed_password,
                 &config
@@ -73,9 +82,10 @@ mod tests {
         // wrong password
         assert_eq!(
             UpdateEmailCommand::new(
-                username.into(),
+                new_email.to_string(),
-                username.into(),
+                user_id.clone(),
-                username.into(),
+                first_name.into(),
+                first_name.into(),
                 &hashed_password,
                 &config
             )

src/identity/application/services/update_email/service.rs

@@ -44,7 +44,7 @@ impl UpdateEmailUseCase for UpdateEmailService {
             .create_verification_secret(
                 CreateSecretMsgBuilder::default()
                     .secret(secret.clone())
-                    .username(cmd.username().into())
+                    .user_id(cmd.user_id().clone())
                     .build()
                     .unwrap(),
             )
@@ -52,7 +52,7 @@ impl UpdateEmailUseCase for UpdateEmailService {
             .unwrap();
 
         self.mailer_account_validation_link_adapter
-            .account_validation_link(cmd.new_email(), cmd.username(), &secret)
+            .account_validation_link(cmd.new_email(), cmd.first_name(), &secret)
             .await
             .unwrap();
 
@@ -66,18 +66,20 @@ mod tests {
     use crate::utils::random_string::tests::*;
 
     use crate::tests::bdd::*;
+    use crate::utils::uuid::tests::UUID;
 
     #[actix_rt::test]
     async fn test_service() {
-        let username = "realaravinth";
+        let user_id = UUID;
-        let new_email = format!("{username}@example.com");
+        let new_email = format!("john@example.com");
         let password = "password";
         let config = argon2_creds::Config::default();
         let hashed_password = config.password(password).unwrap();
 
         let cmd = command::UpdateEmailCommand::new(
-            username.into(),
             new_email.clone(),
+            user_id.clone(),
+            "john".into(),
             password.into(),
             &hashed_password,
             &config,

src/identity/domain/aggregate.rs

@@ -2,15 +2,25 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
+use async_trait::async_trait;
+use cqrs_es::Aggregate;
 use derive_builder::Builder;
 use derive_getters::Getters;
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+
+use crate::identity::application::services::errors::*;
+use crate::identity::application::services::events::UserEvent;
+use crate::identity::application::services::UserCommand;
+use crate::identity::application::services::UserServicesInterface;
 
 #[derive(
     Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters, Builder,
 )]
 pub struct User {
-    username: String,
+    first_name: String,
+    last_name: String,
+    user_id: Uuid,
     email: String,
     hashed_password: String,
     is_verified: bool,
@@ -22,13 +32,15 @@ pub struct User {
 impl Default for User {
     fn default() -> Self {
         User {
-            username: "".to_string(),
+            first_name: "".to_string(),
+            last_name: "".to_string(),
             email: "".to_string(),
             hashed_password: "".to_string(),
             is_verified: false,
             is_admin: false,
             email_verified: false,
             deleted: false,
+            user_id: Uuid::new_v4(),
         }
     }
 }
@@ -64,6 +76,101 @@ impl User {
     }
 }
 
+#[async_trait]
+impl Aggregate for User {
+    type Command = UserCommand;
+    type Event = UserEvent;
+    type Error = IdentityError;
+    type Services = std::sync::Arc<dyn UserServicesInterface>;
+
+    // This identifier should be unique to the system.
+    fn aggregate_type() -> String {
+        "account".to_string()
+    }
+
+    // The aggregate logic goes here. Note that this will be the _bulk_ of a CQRS system
+    // so expect to use helper functions elsewhere to keep the code clean.
+    async fn handle(
+        &self,
+        command: Self::Command,
+        services: &Self::Services,
+    ) -> Result<Vec<Self::Event>, Self::Error> {
+        match command {
+            UserCommand::RegisterUser(cmd) => {
+                let res = services.register_user().register_user(cmd).await?;
+                Ok(vec![UserEvent::UserRegistered(res)])
+            }
+            UserCommand::DeleteUser(cmd) => {
+                services.delete_user().delete_user(cmd).await;
+                Ok(vec![UserEvent::UserDeleted])
+            }
+            UserCommand::Login(cmd) => {
+                let res = services.login().login(cmd).await;
+                Ok(vec![UserEvent::Loggedin(res)])
+            }
+            UserCommand::UpdatePassword(cmd) => {
+                let res = services.update_password().update_password(cmd).await;
+                Ok(vec![UserEvent::PasswordUpdated(res)])
+            }
+            UserCommand::UpdateEmail(cmd) => {
+                let res = services.update_email().update_email(cmd).await?;
+                Ok(vec![UserEvent::EmailUpdated(res)])
+            }
+            UserCommand::MarkUserVerified(cmd) => {
+                services
+                    .mark_user_verified()
+                    .mark_user_verified(cmd)
+                    .await?;
+                Ok(vec![UserEvent::UserVerified])
+            }
+            UserCommand::SetAdmin(cmd) => {
+                let res = services.set_user_admin().set_user_admin(cmd).await;
+                Ok(vec![UserEvent::UserPromotedToAdmin(res)])
+            }
+            UserCommand::ResendVerificationEmail(cmd) => {
+                services
+                    .resend_verification_email()
+                    .resend_verification_email(cmd)
+                    .await?;
+                Ok(vec![UserEvent::VerificationEmailResent])
+            }
+        }
+    }
+
+    fn apply(&mut self, event: Self::Event) {
+        match event {
+            UserEvent::UserRegistered(e) => {
+                self.first_name = e.first_name().into();
+                self.last_name = e.last_name().into();
+                self.user_id = e.user_id().clone();
+                self.email = e.email().into();
+                self.hashed_password = e.hashed_password().into();
+                self.is_admin = e.is_admin().clone();
+                self.email_verified = e.email_verified().clone();
+                self.is_verified = e.is_verified().clone();
+                self.deleted = false;
+            }
+            UserEvent::UserDeleted => {
+                self.set_deleted(true);
+            }
+            UserEvent::Loggedin(_) => (),
+            UserEvent::PasswordUpdated(_) => (),
+            UserEvent::EmailUpdated(e) => {
+                self.set_email(e.new_email().into());
+                self.set_email_verified(false);
+            }
+            UserEvent::UserVerified => {
+                self.set_is_verified(true);
+                self.set_email_verified(true);
+            }
+            UserEvent::UserPromotedToAdmin(_) => {
+                self.set_is_admin(true);
+            }
+            UserEvent::VerificationEmailResent => (),
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

src/inventory/adapters/output/db/postgres/category_view.rs

@@ -6,13 +6,14 @@ use async_trait::async_trait;
 use cqrs_es::persist::GenericQuery;
 use cqrs_es::persist::{PersistenceError, ViewContext, ViewRepository};
 use cqrs_es::{EventEnvelope, Query, View};
+use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 
 use super::errors::*;
 use super::InventoryDBPostgresAdapter;
 use crate::inventory::domain::category_aggregate::Category;
 use crate::inventory::domain::events::InventoryEvent;
-use serde::{Deserialize, Serialize};
+use crate::utils::parse_aggregate_id::parse_aggregate_id;
 
 pub const NEW_CATEGORY_NON_UUID: &str = "new_category_non_uuid-asdfa";
 
@@ -46,8 +47,7 @@ impl View<Category> for CategoryView {
 #[async_trait]
 impl ViewRepository<CategoryView, Category> for InventoryDBPostgresAdapter {
     async fn load(&self, category_id: &str) -> Result<Option<CategoryView>, PersistenceError> {
-        let category_id =
+        let category_id = match parse_aggregate_id(category_id, NEW_CATEGORY_NON_UUID)? {
-            match super::utils::parse_aggregate_id(category_id, NEW_CATEGORY_NON_UUID)? {
             Some((val, _)) => return Ok(Some(val)),
             None => Uuid::parse_str(category_id).unwrap(),
         };
@@ -72,8 +72,7 @@ impl ViewRepository<CategoryView, Category> for InventoryDBPostgresAdapter {
         &self,
         category_id: &str,
     ) -> Result<Option<(CategoryView, ViewContext)>, PersistenceError> {
-        let category_id =
+        let category_id = match parse_aggregate_id(category_id, NEW_CATEGORY_NON_UUID)? {
-            match super::utils::parse_aggregate_id(category_id, NEW_CATEGORY_NON_UUID)? {
             Some(val) => return Ok(Some(val)),
             None => Uuid::parse_str(category_id).unwrap(),
         };

src/inventory/adapters/output/db/postgres/mod.rs

@@ -15,7 +15,6 @@ mod errors;
 mod store_id_exists;
 mod store_name_exists;
 mod store_view;
-mod utils;
 
 #[derive(Clone)]
 pub struct InventoryDBPostgresAdapter {

src/inventory/adapters/output/db/postgres/store_id_exists.rs

@@ -32,6 +32,8 @@ impl StoreIDExistsDBPort for InventoryDBPostgresAdapter {
 mod tests {
     use uuid::Uuid;
 
+    use crate::utils::uuid::tests::UUID;
+
     use super::*;
 
     #[actix_rt::test]
@@ -47,7 +49,7 @@ mod tests {
 
         let store = StoreBuilder::default()
             .name("store_name".into())
-            .owner("store_owner".into())
+            .owner(UUID.clone())
             .address(Some("store_address".into()))
             .store_id(store_id)
             .build()

src/inventory/adapters/output/db/postgres/store_name_exists.rs

@@ -32,6 +32,8 @@ impl StoreNameExistsDBPort for InventoryDBPostgresAdapter {
 mod tests {
     use uuid::Uuid;
 
+    use crate::utils::uuid::tests::UUID;
+
     use super::*;
 
     #[actix_rt::test]
@@ -47,7 +49,7 @@ mod tests {
 
         let store = StoreBuilder::default()
             .name("store_name".into())
-            .owner("store_owner".into())
+            .owner(UUID.clone())
             .address(Some("store_address".into()))
             .store_id(store_id)
             .build()

src/inventory/adapters/output/db/postgres/store_view.rs

@@ -12,6 +12,7 @@ use super::errors::*;
 use super::InventoryDBPostgresAdapter;
 use crate::inventory::domain::events::InventoryEvent;
 use crate::inventory::domain::store_aggregate::Store;
+use crate::utils::parse_aggregate_id::parse_aggregate_id;
 
 pub const NEW_STORE_NON_UUID: &str = "new_store_non_uuid-asdfa";
 
@@ -22,7 +23,7 @@ pub struct StoreView {
     name: String,
     address: Option<String>,
     store_id: Uuid,
-    owner: String,
+    owner: Uuid,
 }
 
 // This updates the view with events as they are committed.
@@ -45,7 +46,7 @@ impl View<Store> for StoreView {
 #[async_trait]
 impl ViewRepository<StoreView, Store> for InventoryDBPostgresAdapter {
     async fn load(&self, store_id: &str) -> Result<Option<StoreView>, PersistenceError> {
-        let store_id = match super::utils::parse_aggregate_id(store_id, NEW_STORE_NON_UUID)? {
+        let store_id = match parse_aggregate_id(store_id, NEW_STORE_NON_UUID)? {
             Some((val, _)) => return Ok(Some(val)),
             None => Uuid::parse_str(store_id).unwrap(),
         };
@@ -70,7 +71,7 @@ impl ViewRepository<StoreView, Store> for InventoryDBPostgresAdapter {
         &self,
         store_id: &str,
     ) -> Result<Option<(StoreView, ViewContext)>, PersistenceError> {
-        let store_id = match super::utils::parse_aggregate_id(store_id, NEW_STORE_NON_UUID)? {
+        let store_id = match parse_aggregate_id(store_id, NEW_STORE_NON_UUID)? {
             Some(val) => return Ok(Some(val)),
             None => Uuid::parse_str(store_id).unwrap(),
         };
@@ -247,7 +248,7 @@ mod tests {
             ))
             .add_category(mock_add_category_service(
                 IS_NEVER_CALLED,
-                AddCategoryCommand::new("foo".into(), None, UUID.clone(), "bar".into()).unwrap(),
+                AddCategoryCommand::new("foo".into(), None, UUID.clone(), UUID.clone()).unwrap(),
             ))
             .build()
             .unwrap();
@@ -265,7 +266,7 @@ mod tests {
         );
 
         let rand = crate::utils::random_string::GenerateRandomString {};
-        let cmd = AddStoreCommand::new(rand.get_random(10), None, "me".into()).unwrap();
+        let cmd = AddStoreCommand::new(rand.get_random(10), None, UUID.clone()).unwrap();
         cqrs.execute("", InventoryCommand::AddStore(cmd.clone()))
             .await
             .unwrap();

src/inventory/application/services/add_category_service.rs

@@ -78,7 +78,7 @@ impl AddCategoryUseCase for AddCategoryService {
         Ok(CategoryAddedEventBuilder::default()
             .name(category.name().into())
             .description(category.description().as_ref().map(|s| s.to_string()))
-            .added_by_user(cmd.adding_by().into())
+            .added_by_user(cmd.adding_by().clone())
             .store_id(category.store_id().clone())
             .category_id(category.category_id().clone())
             .build()
@@ -104,7 +104,7 @@ pub mod tests {
         let res = CategoryAddedEventBuilder::default()
             .name(cmd.name().into())
             .description(cmd.description().as_ref().map(|s| s.to_string()))
-            .added_by_user(cmd.adding_by().into())
+            .added_by_user(cmd.adding_by().clone())
             .store_id(cmd.store_id().clone())
             .category_id(UUID.clone())
             .build()
@@ -125,7 +125,7 @@ pub mod tests {
     async fn test_service_category_doesnt_exist() {
         let name = "foo";
         let description = "bar";
-        let username = "baz";
+        let user_id = UUID;
         let store_id = Uuid::new_v4();
 
         // description = None
@@ -133,7 +133,7 @@ pub mod tests {
             name.into(),
             Some(description.into()),
             store_id.clone(),
-            username.into(),
+            user_id.clone(),
         )
         .unwrap();
 
@@ -158,7 +158,7 @@ pub mod tests {
     async fn test_service_category_name_exists_for_store() {
         let name = "foo";
         let description = "bar";
-        let username = "baz";
+        let user_id = UUID;
         let store_id = Uuid::new_v4();
 
         // description = None
@@ -166,7 +166,7 @@ pub mod tests {
             name.into(),
             Some(description.into()),
             store_id.clone(),
-            username.into(),
+            user_id.clone(),
         )
         .unwrap();
 
@@ -175,7 +175,7 @@ pub mod tests {
                 IS_CALLED_ONLY_ONCE,
             ))
             .db_category_id_exists(mock_category_id_exists_db_port_false(IS_NEVER_CALLED))
-            .get_uuid(mock_get_uuid(IS_NEVER_CALLED))
+            .get_uuid(mock_get_uuid(IS_CALLED_ONLY_ONCE))
             .build()
             .unwrap();
 

src/inventory/application/services/add_store_service.rs

@@ -43,7 +43,7 @@ impl AddStoreUseCase for AddStoreService {
         let mut store = StoreBuilder::default()
             .name(cmd.name().into())
             .address(cmd.address().as_ref().map(|s| s.to_string()))
-            .owner(cmd.owner().into())
+            .owner(cmd.owner().clone())
             .store_id(store_id.clone())
             .build()
             .unwrap();
@@ -58,6 +58,7 @@ impl AddStoreUseCase for AddStoreService {
                 store = StoreBuilder::default()
                     .name(cmd.name().into())
                     .address(cmd.address().as_ref().map(|s| s.to_string()))
+                    .owner(cmd.owner().clone())
                     .store_id(store_id.clone())
                     .build()
                     .unwrap();
@@ -70,7 +71,7 @@ impl AddStoreUseCase for AddStoreService {
         Ok(StoreAddedEventBuilder::default()
             .name(store.name().into())
             .address(store.address().as_ref().map(|s| s.to_string()))
-            .owner(cmd.owner().into())
+            .owner(cmd.owner().clone())
             .store_id(store_id.clone())
             .build()
             .unwrap())
@@ -93,7 +94,7 @@ pub mod tests {
         let res = StoreAddedEventBuilder::default()
             .name(cmd.name().into())
             .address(cmd.address().as_ref().map(|s| s.to_string()))
-            .owner(cmd.owner().into())
+            .owner(cmd.owner().clone())
             .store_id(UUID.clone())
             .build()
             .unwrap();
@@ -113,10 +114,10 @@ pub mod tests {
     async fn test_service_store_id_doesnt_exist() {
         let name = "foo";
         let address = "bar";
-        let username = "baz";
+        let owner = UUID;
 
         // address = None
-        let cmd = AddStoreCommand::new(name.into(), Some(address.into()), username.into()).unwrap();
+        let cmd = AddStoreCommand::new(name.into(), Some(address.into()), owner.clone()).unwrap();
 
         let s = AddStoreServiceBuilder::default()
             .db_store_id_exists(mock_store_id_exists_db_port_false(IS_CALLED_ONLY_ONCE))
@@ -136,10 +137,10 @@ pub mod tests {
     async fn test_service_store_name_exists() {
         let name = "foo";
         let address = "bar";
-        let username = "baz";
+        let owner = UUID;
 
         // address = None
-        let cmd = AddStoreCommand::new(name.into(), Some(address.into()), username.into()).unwrap();
+        let cmd = AddStoreCommand::new(name.into(), Some(address.into()), owner.clone()).unwrap();
 
         let s = AddStoreServiceBuilder::default()
             .db_store_id_exists(mock_store_id_exists_db_port_false(IS_NEVER_CALLED))

src/inventory/domain/add_category_command.rs

@@ -17,7 +17,7 @@ pub struct AddCategoryCommand {
     name: String,
     description: Option<String>,
     store_id: Uuid,
-    adding_by: String,
+    adding_by: Uuid,
 }
 
 impl AddCategoryCommand {
@@ -25,7 +25,7 @@ impl AddCategoryCommand {
         name: String,
         description: Option<String>,
         store_id: Uuid,
-        adding_by: String,
+        adding_by: Uuid,
     ) -> Result<Self, AddCategoryCommandError> {
         let description: Option<String> = if let Some(description) = description {
             let description = description.trim();
@@ -56,19 +56,21 @@ impl AddCategoryCommand {
 mod tests {
     use super::*;
 
+    use crate::utils::uuid::tests::UUID;
+
     #[test]
     fn test_cmd() {
         let name = "foo";
         let description = "bar";
-        let username = "baz";
+        let adding_by = UUID;
         let store_id = Uuid::new_v4();
 
         // description = None
-        let cmd =
+        let cmd = AddCategoryCommand::new(name.into(), None, store_id.clone(), adding_by.clone())
-            AddCategoryCommand::new(name.into(), None, store_id.clone(), username.into()).unwrap();
+            .unwrap();
         assert_eq!(cmd.name(), name);
         assert_eq!(cmd.description(), &None);
-        assert_eq!(cmd.adding_by(), username);
+        assert_eq!(cmd.adding_by(), &adding_by);
         assert_eq!(cmd.store_id(), &store_id);
 
         // description = Some
@@ -76,12 +78,12 @@ mod tests {
             name.into(),
             Some(description.into()),
             store_id.clone(),
-            username.into(),
+            adding_by.clone(),
         )
         .unwrap();
         assert_eq!(cmd.name(), name);
         assert_eq!(cmd.description(), &Some(description.to_owned()));
-        assert_eq!(cmd.adding_by(), username);
+        assert_eq!(cmd.adding_by(), &adding_by);
         assert_eq!(cmd.store_id(), &store_id);
 
         // AddCategoryCommandError::NameIsEmpty
@@ -90,7 +92,7 @@ mod tests {
                 "".into(),
                 Some(description.into()),
                 store_id.clone(),
-                username.into()
+                adding_by.clone(),
             ),
             Err(AddCategoryCommandError::NameIsEmpty)
         )

src/inventory/domain/add_store_command.rs

@@ -5,6 +5,7 @@
 use derive_getters::Getters;
 use derive_more::{Display, Error};
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 #[derive(Debug, Error, Display, Clone, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
 pub enum AddStoreCommandError {
@@ -15,14 +16,14 @@ pub enum AddStoreCommandError {
 pub struct AddStoreCommand {
     name: String,
     address: Option<String>,
-    owner: String,
+    owner: Uuid,
 }
 
 impl AddStoreCommand {
     pub fn new(
         name: String,
         address: Option<String>,
-        owner: String,
+        owner: Uuid,
     ) -> Result<Self, AddStoreCommandError> {
         let address: Option<String> = if let Some(address) = address {
             let address = address.trim();
@@ -50,29 +51,31 @@ impl AddStoreCommand {
 
 #[cfg(test)]
 mod tests {
+    use crate::utils::uuid::tests::UUID;
+
     use super::*;
 
     #[test]
     fn test_cmd() {
         let name = "foo";
         let address = "bar";
-        let username = "baz";
+        let owner = UUID.clone();
 
         // address = None
-        let cmd = AddStoreCommand::new(name.into(), None, username.into()).unwrap();
+        let cmd = AddStoreCommand::new(name.into(), None, owner.clone()).unwrap();
         assert_eq!(cmd.name(), name);
         assert_eq!(cmd.address(), &None);
-        assert_eq!(cmd.owner(), username);
+        assert_eq!(cmd.owner(), &owner);
 
         // address = Some
-        let cmd = AddStoreCommand::new(name.into(), Some(address.into()), username.into()).unwrap();
+        let cmd = AddStoreCommand::new(name.into(), Some(address.into()), owner.clone()).unwrap();
         assert_eq!(cmd.name(), name);
         assert_eq!(cmd.address(), &Some(address.to_owned()));
-        assert_eq!(cmd.owner(), username);
+        assert_eq!(cmd.owner(), &owner);
 
         // AddStoreCommandError::NameIsEmpty
         assert_eq!(
-            AddStoreCommand::new("".into(), Some(address.into()), username.into()),
+            AddStoreCommand::new("".into(), Some(address.into()), owner.clone()),
             Err(AddStoreCommandError::NameIsEmpty)
         )
     }

src/inventory/domain/category_added_event.rs

@@ -13,7 +13,7 @@ use uuid::Uuid;
 pub struct CategoryAddedEvent {
     name: String,
     description: Option<String>,
-    added_by_user: String,
+    added_by_user: Uuid,
     category_id: Uuid,
     store_id: Uuid,
 }

src/inventory/domain/category_aggregate.rs

@@ -92,7 +92,7 @@ mod aggregate_tests {
     fn test_create_store() {
         let name = "category_name";
         let description = Some("category_description".to_string());
-        let adding_by = "store_owner";
+        let adding_by = UUID;
         let store_id = Uuid::new_v4();
         let category_id = UUID.clone();
 
@@ -100,14 +100,14 @@ mod aggregate_tests {
             name.into(),
             description.clone(),
             store_id.clone(),
-            adding_by.into(),
+            adding_by.clone(),
         )
         .unwrap();
 
         let expected = CategoryAddedEventBuilder::default()
             .name(cmd.name().into())
             .description(cmd.description().as_ref().map(|s| s.to_string()))
-            .added_by_user(cmd.adding_by().into())
+            .added_by_user(cmd.adding_by().clone())
             .store_id(cmd.store_id().clone())
             .category_id(category_id.clone())
             .build()

src/inventory/domain/store_added_event.rs

@@ -13,6 +13,6 @@ use uuid::Uuid;
 pub struct StoreAddedEvent {
     name: String,
     address: Option<String>,
-    owner: String,
+    owner: Uuid,
     store_id: Uuid,
 }

src/inventory/domain/store_aggregate.rs

@@ -20,7 +20,7 @@ use super::{commands::InventoryCommand, events::InventoryEvent};
 pub struct Store {
     name: String,
     address: Option<String>,
-    owner: String,
+    owner: Uuid,
     store_id: Uuid,
 }
 
@@ -62,7 +62,7 @@ impl Aggregate for Store {
             InventoryEvent::StoreAdded(e) => {
                 self.name = e.name().into();
                 self.address = e.address().as_ref().map(|s| s.to_string());
-                self.owner = e.owner().into();
+                self.owner = e.owner().clone();
                 self.store_id = e.store_id().clone();
             }
             _ => (),
@@ -95,7 +95,7 @@ mod tests {
     fn test_create_store() {
         let name = "store_name";
         let address = Some("store_address".to_string());
-        let owner = "store_owner";
+        let owner = UUID;
         let store_id = UUID;
 
         let expected = StoreAddedEventBuilder::default()
@@ -107,7 +107,7 @@ mod tests {
             .unwrap();
         let expected = InventoryEvent::StoreAdded(expected);
 
-        let cmd = AddStoreCommand::new(name.into(), address.clone(), owner.into()).unwrap();
+        let cmd = AddStoreCommand::new(name.into(), address.clone(), owner.clone()).unwrap();
 
         let mut services = MockInventoryServicesInterface::new();
         services

src/settings/database.rs

@@ -68,12 +68,19 @@ mod tests {
     #[test]
     fn test_db_env_override() {
         let init_settings = crate::settings::Settings::new().unwrap();
+        std::thread::spawn(move || {
             env_helper!(
                 init_settings,
                 "DATABASE_URL",
                 "postgres://test_db_env_override",
                 database.url
             );
+
+            assert!(true);
+        })
+        .join()
+        .unwrap();
+
         env_helper!(init_settings, "VANIKAM_database_POOL", 99, database.pool);
     }
 }

src/settings/mod.rs

@@ -130,6 +130,7 @@ pub mod tests {
     macro_rules! env_helper {
         ($init_settings:ident, $env:expr, $val:expr, $val_typed:expr, $($param:ident).+) => {
             println!("Setting env var {} to {} for test", $env, $val);
+            let current = env::var($env);
             env::set_var($env, $val);
             {
                 let new_settings = $crate::settings::Settings::new().unwrap();
@@ -137,6 +138,9 @@ pub mod tests {
                 assert_ne!(new_settings.$($param).+, $init_settings.$($param).+);
             }
             env::remove_var($env);
+            if let Ok(current) = current {
+                env::set_var($env, current);
+            }
         };
 
 
@@ -150,6 +154,7 @@ pub mod tests {
         let mut db_url = Url::parse(&settings.database.url).unwrap();
         db_url.set_path(&GenerateRandomString.get_random(12));
         settings.database.url = db_url.to_string();
+        settings.database.pool = 1;
 
         settings
     }

src/tests/bdd.rs

@@ -3,9 +3,10 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 pub const IS_CALLED_ONLY_ONCE: Option<usize> = Some(1);
-pub const IS_NEVER_CALLED: Option<usize> = None;
+pub const IS_NEVER_CALLED: Option<usize> = Some(0);
 pub const IS_CALLED_ONLY_TWICE: Option<usize> = Some(2);
 pub const RETURNS_RANDOM_STRING: &str = "test_random_string";
+pub const IGNORE_CALL_COUNT: Option<usize> = None;
 
 pub const RETURNS_TRUE: bool = true;
 pub const RETURNS_FALSE: bool = false;

src/utils/mod.rs

@@ -2,5 +2,6 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
+pub mod parse_aggregate_id;
 pub mod random_string;
 pub mod uuid;