allow 'deletion' of user

src/model/user.rs

@@ -18,6 +18,7 @@ pub struct User {
     pub is_cox: bool,
     is_admin: bool,
     is_guest: bool,
+    deleted: bool,
 }
 
 #[derive(Debug)]
@@ -34,7 +35,7 @@ impl User {
         sqlx::query_as!(
             User,
             "
-SELECT id, name, pw, is_cox, is_admin, is_guest
+SELECT id, name, pw, is_cox, is_admin, is_guest, deleted
 FROM user 
 WHERE id like ?
         ",
@@ -49,7 +50,7 @@ WHERE id like ?
         sqlx::query_as!(
             User,
             "
-SELECT id, name, pw, is_cox, is_admin, is_guest
+SELECT id, name, pw, is_cox, is_admin, is_guest, deleted
 FROM user 
 WHERE name like ?
         ",
@@ -64,8 +65,9 @@ WHERE name like ?
         sqlx::query_as!(
             User,
             "
-SELECT id, name, pw, is_cox, is_admin, is_guest
+SELECT id, name, pw, is_cox, is_admin, is_guest, deleted
 FROM user
+WHERE deleted = 0
 ORDER BY name
         "
         )
@@ -103,6 +105,11 @@ ORDER BY name
             return Err(LoginError::InvalidAuthenticationCombo); // Username not found
         };
 
+        if user.deleted {
+            return Err(LoginError::InvalidAuthenticationCombo); //User existed sometime ago; has
+                                                                //been deleted
+        }
+
         match user.pw.clone() {
             Some(user_pw) => {
                 let password_hash = Self::get_hashed_pw(&pw);
@@ -139,6 +146,13 @@ ORDER BY name
             .unwrap()
             .to_string()
     }
+
+    pub async fn delete(&self, db: &SqlitePool) {
+        sqlx::query!("UPDATE user SET deleted=1 WHERE id=?", self.id)
+            .execute(db)
+            .await
+            .unwrap(); //Okay, because we can only create a User of a valid id
+    }
 }
 
 #[async_trait]