start adding delete account api

Author: foxfriends

server/src/database/account.rs

@@ -398,4 +398,17 @@ impl Database {
             )
         })
     }
+
+    pub fn delete_account(&self, maybe_user_id: Option<i32>) -> Result<(), String> {
+        let user_id = self.resolve_user_id_protected(maybe_user_id)?;
+
+        let mut conn = self.pool.get().unwrap();
+        conn.transaction(|conn| -> QueryResult<()> {
+            diesel::delete(users::table)
+                .filter(users::user_id.eq(user_id))
+                .execute(conn)?;
+            Ok(())
+        })
+        .map_err(|reason| format!("Delete user {} failed. Reason: {}", user_id, reason))
+    }
 }

server/src/graphql/mutation/mod.rs

@@ -75,6 +75,13 @@ impl Mutation {
         }
     }
 
+    fn delete_account(context: &Database, user_id: Option<i32>) -> FieldResult<bool> {
+        dbtry! {
+            context.delete_account(user_id)
+        }?;
+        Ok(true)
+    }
+
     // Product types
     fn add_user_product_type(
         context: &Database,