feat: def get_email trait

db/db-core/src/errors.rs

@@ -41,6 +41,7 @@ pub enum DBError {
     /// Account not found
     #[error("Account not found")]
     AccountNotFound,
+
     /// Captcha not found
     #[error("Captcha not found")]
     CaptchaNotFound,

db/db-core/src/lib.rs

@@ -113,6 +113,9 @@ pub trait MCDatabase: std::marker::Send + std::marker::Sync + CloneSPDatabase {
     /// check if username exists
     async fn username_exists(&self, username: &str) -> DBResult<bool>;
 
+    /// get user email
+    async fn get_email(&self, username: &str) -> DBResult<Option<String>>;
+
     /// check if email exists
     async fn email_exists(&self, email: &str) -> DBResult<bool>;
 

db/db-core/src/tests.rs

@@ -65,6 +65,17 @@ pub async fn database_works<'a, T: MCDatabase>(
     assert_eq!(name_hash.hash, p.hash, "user password matches");
     assert_eq!(name_hash.username, p.username, "username matches");
 
+    // testing get_email
+    assert_eq!(
+        db.get_email(p.username)
+            .await
+            .unwrap()
+            .as_ref()
+            .unwrap()
+            .as_str(),
+        p.email.unwrap()
+    );
+
     // testing email exists
     assert!(
         db.email_exists(p.email.as_ref().unwrap()).await.unwrap(),
@@ -119,6 +130,9 @@ pub async fn database_works<'a, T: MCDatabase>(
         "user registration with email is deleted; so email shouldn't exsit"
     );
 
+    // testing get_email = None
+    assert_eq!(db.get_email(p.username).await.unwrap(), None);
+
     // testing update email
     let update_email = UpdateEmail {
         username: p.username,