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

@@ -32,6 +32,7 @@ impl CustomizationIDExistsDBPort for InventoryDBPostgresAdapter {
 pub mod tests {
 
     use super::*;
+
     use crate::inventory::domain::customization_aggregate::*;
     use crate::utils::uuid::tests::UUID;
 
@@ -45,14 +46,12 @@ pub mod tests {
                 .unwrap(),
         );
 
-        let customization = 
+        let customization = CustomizationBuilder::default()
-            CustomizationBuilder::default()
+            .name("customization_name".into())
-                .name("cname".into())
             .customization_id(UUID)
             .deleted(false)
             .build()
-                .unwrap()
+            .unwrap();
-        ;
 
         // state doesn't exist
         assert!(!db

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

@@ -7,7 +7,7 @@ use super::InventoryDBPostgresAdapter;
 use crate::inventory::application::port::output::db::{
     customization_name_exists_for_product::*, errors::*,
 };
-use crate::inventory::domain::product_aggregate::*;
+use crate::inventory::domain::customization_aggregate::*;
 
 #[async_trait::async_trait]
 impl CustomizationNameExistsForProductDBPort for InventoryDBPostgresAdapter {

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

@@ -33,9 +33,7 @@ pub mod tests {
 
     use super::*;
     //    use crate::inventory::domain::add_product_command::tests::get_customizations;
-    use crate::inventory::domain::{
+    use crate::inventory::domain::{add_product_command::tests::get_command, product_aggregate::*};
-        add_product_command::tests::get_command, product_aggregate::*,
-    };
     use crate::utils::uuid::tests::UUID;
 
     #[actix_rt::test]

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

@@ -212,12 +212,14 @@ mod tests {
         inventory::{
             application::services::{
                 add_category_service::tests::mock_add_category_service,
+                add_customization_service::tests::mock_add_customization_service,
                 add_product_service::tests::mock_add_product_service,
                 add_store_service::AddStoreServiceBuilder, InventoryServicesBuilder,
             },
             domain::{
-                add_category_command::AddCategoryCommand, add_product_command::tests::get_command,
+                add_category_command::AddCategoryCommand, add_customization_command,
-                add_store_command::AddStoreCommand, commands::InventoryCommand,
+                add_product_command::tests::get_command, add_store_command::AddStoreCommand,
+                commands::InventoryCommand,
             },
         },
         tests::bdd::IS_NEVER_CALLED,
@@ -254,6 +256,10 @@ mod tests {
                 AddCategoryCommand::new("foo".into(), None, UUID, UUID).unwrap(),
             ))
             .add_product(mock_add_product_service(IS_NEVER_CALLED, get_command()))
+            .add_customization(mock_add_customization_service(
+                IS_NEVER_CALLED,
+                add_customization_command::tests::get_command(),
+            ))
             .build()
             .unwrap();
 

src/inventory/application/services/add_category_service.rs

@@ -29,6 +29,7 @@ pub type AddCategoryServiceObj = Arc<dyn AddCategoryUseCase>;
 
 #[derive(Clone, Builder)]
 pub struct AddCategoryService {
+    // TODO: check if store ID exists
     db_category_name_exists_for_store: CategoryNameExistsForStoreDBPortObj,
     db_category_id_exists: CategoryIDExistsDBPortObj,
     get_uuid: GetUUIDInterfaceObj,

src/inventory/application/services/add_customization_service.rs

@@ -0,0 +1,203 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use std::sync::Arc;
+
+use derive_builder::Builder;
+use mockall::predicate::*;
+use mockall::*;
+
+use super::errors::*;
+use crate::inventory::{
+    application::port::output::db::{
+        customization_id_exists::{self, *},
+        customization_name_exists_for_product::*,
+        product_id_exists::{self, *},
+        product_name_exists_for_category::*,
+    },
+    domain::{
+        add_customization_command::AddCustomizationCommand,
+        customization_added_event::{self, *},
+        customization_aggregate::*,
+        product_added_event::{self, ProductAddedEvent, ProductAddedEventBuilder},
+        product_aggregate::*,
+    },
+};
+use crate::utils::uuid::*;
+
+#[automock]
+#[async_trait::async_trait]
+pub trait AddCustomizationUseCase: Send + Sync {
+    async fn add_customization(
+        &self,
+        cmd: AddCustomizationCommand,
+    ) -> InventoryResult<CustomizationAddedEvent>;
+}
+
+pub type AddCustomizationServiceObj = Arc<dyn AddCustomizationUseCase>;
+
+#[derive(Clone, Builder)]
+pub struct AddCustomizationService {
+    db_product_id_exists: ProductIDExistsDBPortObj,
+    db_customization_id_exists: CustomizationIDExistsDBPortObj,
+    db_customization_name_exists_for_product: CustomizationNameExistsForProductDBPortObj,
+    get_uuid: GetUUIDInterfaceObj,
+}
+
+#[async_trait::async_trait]
+impl AddCustomizationUseCase for AddCustomizationService {
+    async fn add_customization(
+        &self,
+        cmd: AddCustomizationCommand,
+    ) -> InventoryResult<CustomizationAddedEvent> {
+        if !self
+            .db_product_id_exists
+            .product_id_exists(cmd.product_id())
+            .await?
+        {
+            return Err(InventoryError::ProductIDNotFound);
+        }
+
+        let mut customization_id = self.get_uuid.get_uuid();
+        loop {
+            if self
+                .db_customization_id_exists
+                .customization_id_exists(&customization_id)
+                .await?
+            {
+                customization_id = self.get_uuid.get_uuid();
+                continue;
+            } else {
+                break;
+            }
+        }
+
+        let customization = CustomizationBuilder::default()
+            .name(cmd.name().into())
+            .deleted(false)
+            .customization_id(customization_id)
+            .build()
+            .unwrap();
+
+        if self
+            .db_customization_name_exists_for_product
+            .customization_name_exists_for_product(&customization, cmd.product_id())
+            .await?
+        {
+            return Err(InventoryError::DuplicateCustomizationName);
+        }
+
+        Ok(CustomizationAddedEventBuilder::default()
+            .customization(customization)
+            .product_id(cmd.product_id().clone())
+            .build()
+            .unwrap())
+    }
+}
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    use uuid::Uuid;
+
+    use crate::inventory::domain::add_customization_command::tests::get_command;
+    use crate::utils::uuid::tests::UUID;
+    use crate::{tests::bdd::*, utils::uuid::tests::mock_get_uuid};
+
+    pub fn mock_add_customization_service(
+        times: Option<usize>,
+        cmd: AddCustomizationCommand,
+    ) -> AddCustomizationServiceObj {
+        let mut m = MockAddCustomizationUseCase::new();
+
+        let customization = CustomizationBuilder::default()
+            .name(cmd.name().into())
+            .deleted(false)
+            .customization_id(UUID.clone())
+            .build()
+            .unwrap();
+
+        let res = CustomizationAddedEventBuilder::default()
+            .customization(customization)
+            .product_id(cmd.product_id().clone())
+            .build()
+            .unwrap();
+
+        if let Some(times) = times {
+            m.expect_add_customization()
+                .times(times)
+                .returning(move |_| Ok(res.clone()));
+        } else {
+            m.expect_add_customization()
+                .returning(move |_| Ok(res.clone()));
+        }
+
+        Arc::new(m)
+    }
+
+    #[actix_rt::test]
+    async fn test_service_product_doesnt_exist() {
+        let cmd = get_command();
+
+        let s = AddCustomizationServiceBuilder::default()
+            .db_product_id_exists(mock_product_id_exists_db_port_true(IS_CALLED_ONLY_ONCE))
+            .db_customization_id_exists(mock_customization_id_exists_db_port_false(
+                IS_CALLED_ONLY_ONCE,
+            ))
+            .db_customization_name_exists_for_product(
+                mock_customization_name_exists_for_product_db_port_false(IS_CALLED_ONLY_ONCE),
+            )
+            .get_uuid(mock_get_uuid(IS_CALLED_ONLY_ONCE))
+            .build()
+            .unwrap();
+
+        let res = s.add_customization(cmd.clone()).await.unwrap();
+        assert_eq!(res.customization().name(), cmd.name());
+        assert_eq!(res.product_id(), cmd.product_id());
+        //        assert_eq!(customization_added_events.len(), cmd.customizations().len());
+    }
+
+    #[actix_rt::test]
+    async fn test_service_product_name_exists_for_store() {
+        let cmd = get_command();
+
+        let s = AddCustomizationServiceBuilder::default()
+            .db_product_id_exists(mock_product_id_exists_db_port_true(IS_CALLED_ONLY_ONCE))
+            .db_customization_id_exists(mock_customization_id_exists_db_port_false(
+                IS_CALLED_ONLY_ONCE,
+            ))
+            .db_customization_name_exists_for_product(
+                mock_customization_name_exists_for_product_db_port_true(IS_CALLED_ONLY_ONCE),
+            )
+            .get_uuid(mock_get_uuid(IS_CALLED_ONLY_ONCE))
+            .build()
+            .unwrap();
+
+        assert_eq!(
+            s.add_customization(cmd.clone()).await,
+            Err(InventoryError::DuplicateCustomizationName)
+        )
+    }
+
+    #[actix_rt::test]
+    async fn test_service_product_id_not_found() {
+        let cmd = get_command();
+
+        let s = AddCustomizationServiceBuilder::default()
+            .db_product_id_exists(mock_product_id_exists_db_port_false(IS_CALLED_ONLY_ONCE))
+            .db_customization_id_exists(mock_customization_id_exists_db_port_true(IS_NEVER_CALLED))
+            .db_customization_name_exists_for_product(
+                mock_customization_name_exists_for_product_db_port_false(IS_NEVER_CALLED),
+            )
+            .get_uuid(mock_get_uuid(IS_NEVER_CALLED))
+            .build()
+            .unwrap();
+
+        assert_eq!(
+            s.add_customization(cmd.clone()).await,
+            Err(InventoryError::ProductIDNotFound)
+        )
+    }
+}

src/inventory/application/services/errors.rs

@@ -16,6 +16,7 @@ pub enum InventoryError {
     DuplicateStoreName,
     DuplicateProductName,
     DuplicateCustomizationName,
+    ProductIDNotFound,
     InternalError,
 }
 

src/inventory/application/services/mod.rs

@@ -10,6 +10,7 @@ pub mod errors;
 
 // services
 pub mod add_category_service;
+pub mod add_customization_service;
 pub mod add_product_service;
 pub mod add_store_service;
 
@@ -18,6 +19,7 @@ pub trait InventoryServicesInterface: Send + Sync {
     fn add_store(&self) -> add_store_service::AddStoreServiceObj;
     fn add_category(&self) -> add_category_service::AddCategoryServiceObj;
     fn add_product(&self) -> add_product_service::AddProductServiceObj;
+    fn add_customization(&self) -> add_customization_service::AddCustomizationServiceObj;
 }
 
 #[derive(Clone, Builder)]
@@ -25,6 +27,7 @@ pub struct InventoryServices {
     add_store: add_store_service::AddStoreServiceObj,
     add_category: add_category_service::AddCategoryServiceObj,
     add_product: add_product_service::AddProductServiceObj,
+    add_customization: add_customization_service::AddCustomizationServiceObj,
 }
 
 impl InventoryServicesInterface for InventoryServices {
@@ -37,4 +40,8 @@ impl InventoryServicesInterface for InventoryServices {
     fn add_product(&self) -> add_product_service::AddProductServiceObj {
         self.add_product.clone()
     }
+
+    fn add_customization(&self) -> add_customization_service::AddCustomizationServiceObj {
+        self.add_customization.clone()
+    }
 }

src/inventory/domain/add_customization_command.rs

@@ -0,0 +1,91 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use derive_builder::Builder;
+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 AddCustomizationCommandError {
+    NameIsEmpty,
+}
+
+#[derive(
+    Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters, Builder,
+)]
+pub struct UnvalidatedAddCustomizationCommand {
+    name: String,
+    product_id: Uuid,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters)]
+pub struct AddCustomizationCommand {
+    name: String,
+    product_id: Uuid,
+}
+
+impl UnvalidatedAddCustomizationCommand {
+    pub fn validate(self) -> Result<AddCustomizationCommand, AddCustomizationCommandError> {
+        let name = self.name.trim().to_owned();
+        if name.is_empty() {
+            return Err(AddCustomizationCommandError::NameIsEmpty);
+        }
+
+        Ok(AddCustomizationCommand {
+            name,
+            product_id: self.product_id,
+        })
+    }
+}
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    use crate::utils::uuid::tests::UUID;
+
+    pub fn get_command() -> AddCustomizationCommand {
+        UnvalidatedAddCustomizationCommandBuilder::default()
+            .name("foo".into())
+            .product_id(UUID.clone())
+            .build()
+            .unwrap()
+            .validate()
+            .unwrap()
+    }
+
+    #[test]
+    fn test_cmd() {
+        let name = "foo";
+        let product_id = UUID;
+
+        let cmd = UnvalidatedAddCustomizationCommandBuilder::default()
+            .name(name.into())
+            .product_id(product_id.clone())
+            .build()
+            .unwrap()
+            .validate()
+            .unwrap();
+
+        assert_eq!(cmd.name(), name);
+        assert_eq!(cmd.product_id(), &product_id);
+    }
+
+    #[test]
+    fn test_cmd_name_is_empty() {
+        let product_id = UUID;
+
+        assert_eq!(
+            UnvalidatedAddCustomizationCommandBuilder::default()
+                .name("".into())
+                .product_id(product_id.clone())
+                .build()
+                .unwrap()
+                .validate(),
+            Err(AddCustomizationCommandError::NameIsEmpty)
+        );
+    }
+}

src/inventory/domain/commands.rs

@@ -6,8 +6,8 @@ use mockall::predicate::*;
 use serde::{Deserialize, Serialize};
 
 use super::{
-    add_category_command::AddCategoryCommand, add_product_command::AddProductCommand,
+    add_category_command::AddCategoryCommand, add_customization_command::AddCustomizationCommand,
-    add_store_command::AddStoreCommand,
+    add_product_command::AddProductCommand, add_store_command::AddStoreCommand,
 };
 
 #[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd)]
@@ -15,4 +15,5 @@ pub enum InventoryCommand {
     AddCategory(AddCategoryCommand),
     AddStore(AddStoreCommand),
     AddProduct(AddProductCommand),
+    AddCustomization(AddCustomizationCommand),
 }

src/inventory/domain/customization_added_event.rs

@@ -0,0 +1,18 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use derive_builder::Builder;
+use derive_getters::Getters;
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+
+use super::customization_aggregate::*;
+
+#[derive(
+    Clone, Debug, Builder, Serialize, Deserialize, Getters, Eq, PartialEq, Ord, PartialOrd,
+)]
+pub struct CustomizationAddedEvent {
+    customization: Customization,
+    product_id: Uuid,
+}

src/inventory/domain/events.rs

@@ -6,8 +6,8 @@ use cqrs_es::DomainEvent;
 use serde::{Deserialize, Serialize};
 
 use super::{
-    category_added_event::*, product_added_event::ProductAddedEvent,
+    category_added_event::*, customization_added_event::CustomizationAddedEvent,
-    store_added_event::StoreAddedEvent,
+    product_added_event::ProductAddedEvent, store_added_event::StoreAddedEvent,
 };
 
 #[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd)]
@@ -15,6 +15,7 @@ pub enum InventoryEvent {
     CategoryAdded(CategoryAddedEvent),
     StoreAdded(StoreAddedEvent),
     ProductAdded(ProductAddedEvent),
+    CustomizationAdded(CustomizationAddedEvent),
 }
 
 impl DomainEvent for InventoryEvent {
@@ -27,6 +28,7 @@ impl DomainEvent for InventoryEvent {
             InventoryEvent::CategoryAdded { .. } => "InventoryCategoryAdded",
             InventoryEvent::StoreAdded { .. } => "InventoryStoreAdded",
             InventoryEvent::ProductAdded { .. } => "InventoryProductAdded",
+            InventoryEvent::CustomizationAdded { .. } => "InventoryCustomizationAdded",
         };
 
         e.to_string()

src/inventory/domain/mod.rs

@@ -4,18 +4,23 @@
 
 // aggregates
 pub mod category_aggregate;
+pub mod customization_aggregate;
 pub mod product_aggregate;
 pub mod stock_aggregate;
 pub mod store_aggregate;
 
 // commands
 pub mod add_category_command;
+pub mod add_customization_command;
 pub mod add_product_command;
 pub mod add_store_command;
 pub mod commands;
+pub mod update_product_command;
 
 // events
 pub mod category_added_event;
+pub mod customization_added_event;
 pub mod events;
 pub mod product_added_event;
+pub mod product_updated_event;
 pub mod store_added_event;