feat: mailer: send OTp link port

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

@@ -0,0 +1,48 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use mockall::predicate::*;
+use mockall::*;
+
+use super::errors::*;
+#[cfg(test)]
+#[allow(unused_imports)]
+pub use tests::*;
+
+#[automock]
+#[async_trait::async_trait]
+pub trait AccountValidationLinkOutMailerPort: Send + Sync {
+    async fn account_validation_link(
+        &self,
+        to: &str,
+        username: &str,
+        validation_secret: &str,
+    ) -> OutMailerPortResult<()>;
+}
+
+pub type AccountValidationLinkOutMailerPortObj =
+    std::sync::Arc<dyn AccountValidationLinkOutMailerPort>;
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    use std::sync::Arc;
+
+    pub fn mock_account_validation_link_db_port(
+        times: Option<usize>,
+    ) -> AccountValidationLinkOutMailerPortObj {
+        let mut m = MockAccountValidationLinkOutMailerPort::new();
+        if let Some(times) = times {
+            m.expect_account_validation_link()
+                .times(times)
+                .returning(|_, _, _| Ok(()));
+        } else {
+            m.expect_account_validation_link()
+                .returning(|_, _, _| Ok(()));
+        }
+
+        Arc::new(m)
+    }
+}

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

@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use derive_more::Display;
+use serde::{Deserialize, Serialize};
+
+pub type OutMailerPortResult<V> = Result<V, OutMailerPortError>;
+
+#[derive(Debug, Display, Clone, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+pub enum OutMailerPortError {
+    InternalError,
+}

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

@@ -0,0 +1,6 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+pub mod account_validation_link;
+pub mod errors;