Add better data removal, fix small benign bug

spoticord_database/migrations/2024-06-17-090114_initial_setup/down.sql

@@ -6,4 +6,5 @@ DROP TABLE "user";
 
 -- Trigger functions
 
+DROP FUNCTION IF EXISTS delete_inactive_accounts();
 DROP FUNCTION IF EXISTS update_last_updated_column();

spoticord_database/migrations/2024-06-17-090114_initial_setup/up.sql

@@ -1,4 +1,4 @@
--- Trigger functions
+-- Functions
 
 CREATE OR REPLACE FUNCTION update_last_updated_column()
 RETURNS TRIGGER AS $$
@@ -8,6 +8,13 @@ BEGIN
 END;
 $$ LANGUAGE plpgsql;
 
+CREATE OR REPLACE FUNCTION delete_inactive_accounts() RETURNS void AS $$
+BEGIN
+    DELETE FROM account
+    WHERE last_updated < NOW() - INTERVAL '2 months';
+END;
+$$ LANGUAGE plpgsql;
+
 -- Tables
 
 CREATE TABLE "user" (
@@ -20,7 +27,7 @@ CREATE TABLE "link_request" (
     user_id TEXT UNIQUE NOT NULL,
     expires TIMESTAMP NOT NULL,
 
-    CONSTRAINT fk_user_id FOREIGN KEY (user_id) REFERENCES "user" (id)
+    CONSTRAINT fk_user_id FOREIGN KEY (user_id) REFERENCES "user" (id) ON DELETE CASCADE
 );
 
 CREATE TABLE "account" (
@@ -32,7 +39,7 @@ CREATE TABLE "account" (
     expires TIMESTAMP NOT NULL,
     last_updated TIMESTAMP NOT NULL DEFAULT NOW(),
 
-    CONSTRAINT fk_account_user_id FOREIGN KEY (user_id) REFERENCES "user" (id)
+    CONSTRAINT fk_account_user_id FOREIGN KEY (user_id) REFERENCES "user" (id) ON DELETE CASCADE
 );
 
 -- Triggers

spoticord_database/src/lib.rs

@@ -61,16 +61,16 @@ impl Database {
         Ok(result)
     }
 
-    pub async fn delete_user(&self, user_id: impl AsRef<str>) -> Result<()> {
+    pub async fn delete_user(&self, user_id: impl AsRef<str>) -> Result<usize> {
         use schema::user::dsl::*;
 
         let mut connection = self.0.get().await?;
-        diesel::delete(user)
+        let affected = diesel::delete(user)
             .filter(id.eq(user_id.as_ref()))
             .execute(&mut connection)
             .await?;
 
-        Ok(())
+        Ok(affected)
     }
 
     pub async fn get_or_create_user(&self, user_id: impl AsRef<str>) -> Result<User> {