v0.9.88 major change sqlite to postgres

backend/src/models/migrations/002_triggers_and_indexes.sql

@@ -0,0 +1,96 @@
+-- Migration 002: updated_at auto-trigger + additional indexes
+--
+-- Adds a reusable Postgres trigger function that automatically sets
+-- updated_at = NOW() on any UPDATE, eliminating the need to set it
+-- manually in every route. Also adds a few missing indexes.
+
+-- ── Auto-updated_at trigger function ─────────────────────────────────────────
+
+CREATE OR REPLACE FUNCTION set_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+  NEW.updated_at = NOW();
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Apply to all tables that have an updated_at column
+
+DO $$ BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'trg_users_updated_at') THEN
+    CREATE TRIGGER trg_users_updated_at
+      BEFORE UPDATE ON users
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+  END IF;
+END $$;
+
+DO $$ BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'trg_groups_updated_at') THEN
+    CREATE TRIGGER trg_groups_updated_at
+      BEFORE UPDATE ON groups
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+  END IF;
+END $$;
+
+DO $$ BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'trg_settings_updated_at') THEN
+    CREATE TRIGGER trg_settings_updated_at
+      BEFORE UPDATE ON settings
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+  END IF;
+END $$;
+
+DO $$ BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'trg_user_groups_updated_at') THEN
+    CREATE TRIGGER trg_user_groups_updated_at
+      BEFORE UPDATE ON user_groups
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+  END IF;
+END $$;
+
+DO $$ BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'trg_multi_group_dms_updated_at') THEN
+    CREATE TRIGGER trg_multi_group_dms_updated_at
+      BEFORE UPDATE ON multi_group_dms
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+  END IF;
+END $$;
+
+DO $$ BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'trg_events_updated_at') THEN
+    CREATE TRIGGER trg_events_updated_at
+      BEFORE UPDATE ON events
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+  END IF;
+END $$;
+
+-- ── Additional indexes ────────────────────────────────────────────────────────
+
+-- Notifications: most queries filter by user + read status
+CREATE INDEX IF NOT EXISTS idx_notifications_user_unread
+  ON notifications(user_id, is_read)
+  WHERE is_read = FALSE;
+
+-- Sessions: lookup by user is common on logout / session cleanup
+CREATE INDEX IF NOT EXISTS idx_sessions_user_id
+  ON sessions(user_id);
+
+-- Active sessions: covered by PK (user_id, device) but explicit for clarity
+CREATE INDEX IF NOT EXISTS idx_active_sessions_token
+  ON active_sessions(token);
+
+-- Push subscriptions: lookup by user is the hot path
+CREATE INDEX IF NOT EXISTS idx_push_subscriptions_user
+  ON push_subscriptions(user_id);
+
+-- User group members: reverse lookup (which groups is a user in?)
+CREATE INDEX IF NOT EXISTS idx_user_group_members_user
+  ON user_group_members(user_id);
+
+-- Event availability: reverse lookup (which events has a user responded to?)
+CREATE INDEX IF NOT EXISTS idx_event_availability_user
+  ON event_availability(user_id);
+
+-- Events: filter by created_by (schedule manager views)
+CREATE INDEX IF NOT EXISTS idx_events_type
+  ON events(event_type_id);