-- ============================================================
-- BharathTrucks — Messages Migration
-- ============================================================

CREATE TABLE IF NOT EXISTS messages (
  id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
  sender_id UUID NOT NULL REFERENCES app_users(id),
  receiver_id UUID NOT NULL REFERENCES app_users(id),
  load_id UUID REFERENCES loads(id),
  content TEXT NOT NULL,
  is_read BOOLEAN DEFAULT FALSE,
  created_at TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_messages_receiver ON messages(receiver_id, is_read);
CREATE INDEX IF NOT EXISTS idx_messages_sender ON messages(sender_id);

ALTER TABLE messages ENABLE ROW LEVEL SECURITY;
CREATE POLICY "Allow all on messages" ON messages FOR ALL USING (true) WITH CHECK (true);