-- RLS Policies
ALTER TABLE users ENABLE ROW LEVEL SECURITY;
ALTER TABLE message_threads ENABLE ROW LEVEL SECURITY;
ALTER TABLE thread_participants ENABLE ROW LEVEL SECURITY;
ALTER TABLE messages ENABLE ROW LEVEL SECURITY;

-- Users policies
CREATE POLICY "Users can view their own profile"
  ON users FOR SELECT
  USING (auth.uid() = uuid);

CREATE POLICY "Users can view indexable profiles"
  ON users FOR SELECT
  USING (indexable = true);

CREATE POLICY "Users can update their own profile"
  ON users FOR UPDATE
  USING (auth.uid() = uuid);

-- Message threads policies
CREATE POLICY "Users can view their threads"
  ON message_threads FOR SELECT
  USING (is_thread_participant(id));

-- Thread participants policies
CREATE POLICY "Users can view their thread participants"
  ON thread_participants FOR SELECT
  USING (is_thread_participant(thread_id));

-- Messages policies
CREATE POLICY "Users can view their messages"
  ON messages FOR SELECT
  USING (is_thread_participant(thread_id));

CREATE POLICY "Users can send messages"
  ON messages FOR INSERT
  WITH CHECK (is_thread_participant(thread_id));