-- Profiles and Auth Triggers for Mylder Platform
-- Migration: 20251214_profiles_and_auth.sql

-- Enable UUID extension (if not already enabled)
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";

-- ============================================
-- PROFILES TABLE
-- ============================================
CREATE TABLE IF NOT EXISTS profiles (
  id UUID PRIMARY KEY REFERENCES auth.users(id) ON DELETE CASCADE,
  email TEXT NOT NULL,
  full_name TEXT,
  avatar_url TEXT,
  role TEXT DEFAULT 'user' CHECK (role IN ('user', 'admin')),
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
);

-- Index for email lookups
CREATE INDEX IF NOT EXISTS idx_profiles_email ON profiles(email);

-- Enable RLS
ALTER TABLE profiles ENABLE ROW LEVEL SECURITY;

-- RLS Policies for profiles
CREATE POLICY "Users can view their own profile" ON profiles
  FOR SELECT USING (auth.uid() = id);

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

-- Service role can manage all profiles (for admin operations)
CREATE POLICY "Service role can manage all profiles" ON profiles
  FOR ALL USING (
    auth.jwt() ->> 'role' = 'service_role'
  );

-- ============================================
-- TEAMS TABLE
-- ============================================
CREATE TABLE IF NOT EXISTS teams (
  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  name TEXT NOT NULL,
  owner_id UUID NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  stripe_customer_id TEXT,
  plan TEXT DEFAULT 'free' CHECK (plan IN ('free', 'pro', 'enterprise')),
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_teams_owner_id ON teams(owner_id);

ALTER TABLE teams ENABLE ROW LEVEL SECURITY;

CREATE POLICY "Team owners can manage their teams" ON teams
  FOR ALL USING (auth.uid() = owner_id);

-- ============================================
-- TEAM MEMBERS TABLE
-- ============================================
CREATE TABLE IF NOT EXISTS team_members (
  team_id UUID NOT NULL REFERENCES teams(id) ON DELETE CASCADE,
  user_id UUID NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  role TEXT DEFAULT 'member' CHECK (role IN ('owner', 'admin', 'member')),
  created_at TIMESTAMPTZ DEFAULT NOW(),
  PRIMARY KEY (team_id, user_id)
);

CREATE INDEX IF NOT EXISTS idx_team_members_user_id ON team_members(user_id);

ALTER TABLE team_members ENABLE ROW LEVEL SECURITY;

CREATE POLICY "Team members can view their memberships" ON team_members
  FOR SELECT USING (auth.uid() = user_id);

CREATE POLICY "Team owners can manage memberships" ON team_members
  FOR ALL USING (
    EXISTS (SELECT 1 FROM teams WHERE teams.id = team_members.team_id AND teams.owner_id = auth.uid())
  );

-- ============================================
-- SUBSCRIPTIONS TABLE
-- ============================================
CREATE TABLE IF NOT EXISTS subscriptions (
  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  user_id UUID NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  stripe_customer_id TEXT,
  stripe_subscription_id TEXT,
  plan TEXT DEFAULT 'free' CHECK (plan IN ('free', 'pro', 'team')),
  status TEXT DEFAULT 'active' CHECK (status IN ('active', 'canceled', 'past_due', 'incomplete')),
  current_period_start TIMESTAMPTZ,
  current_period_end TIMESTAMPTZ,
  cancel_at_period_end BOOLEAN DEFAULT FALSE,
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_subscriptions_user_id ON subscriptions(user_id);
CREATE INDEX IF NOT EXISTS idx_subscriptions_stripe_customer_id ON subscriptions(stripe_customer_id);

ALTER TABLE subscriptions ENABLE ROW LEVEL SECURITY;

CREATE POLICY "Users can view their own subscriptions" ON subscriptions
  FOR SELECT USING (auth.uid() = user_id);

-- ============================================
-- MESSAGES TABLE (for chat history)
-- ============================================
CREATE TABLE IF NOT EXISTS messages (
  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
  user_id UUID NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  role TEXT NOT NULL CHECK (role IN ('user', 'assistant', 'system')),
  content TEXT NOT NULL,
  metadata JSONB DEFAULT '{}',
  created_at TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_messages_project_id ON messages(project_id);
CREATE INDEX IF NOT EXISTS idx_messages_user_id ON messages(user_id);
CREATE INDEX IF NOT EXISTS idx_messages_created_at ON messages(created_at DESC);

ALTER TABLE messages ENABLE ROW LEVEL SECURITY;

CREATE POLICY "Users can manage messages in their projects" ON messages
  FOR ALL USING (
    EXISTS (SELECT 1 FROM projects WHERE projects.id = messages.project_id AND projects.user_id = auth.uid())
  );

-- ============================================
-- AGENT RUNS TABLE
-- ============================================
CREATE TABLE IF NOT EXISTS agent_runs (
  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  message_id UUID NOT NULL REFERENCES messages(id) ON DELETE CASCADE,
  project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
  command TEXT NOT NULL,
  status TEXT DEFAULT 'pending' CHECK (status IN ('pending', 'running', 'completed', 'failed', 'cancelled')),
  result JSONB,
  started_at TIMESTAMPTZ,
  completed_at TIMESTAMPTZ,
  created_at TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_agent_runs_project_id ON agent_runs(project_id);
CREATE INDEX IF NOT EXISTS idx_agent_runs_status ON agent_runs(status);

ALTER TABLE agent_runs ENABLE ROW LEVEL SECURITY;

CREATE POLICY "Users can view agent runs in their projects" ON agent_runs
  FOR ALL USING (
    EXISTS (SELECT 1 FROM projects WHERE projects.id = agent_runs.project_id AND projects.user_id = auth.uid())
  );

-- ============================================
-- ISSUES TABLE
-- ============================================
CREATE TABLE IF NOT EXISTS issues (
  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
  gitea_id INTEGER,
  title TEXT NOT NULL,
  body TEXT,
  state TEXT DEFAULT 'open' CHECK (state IN ('open', 'closed')),
  labels TEXT[] DEFAULT '{}',
  assignee TEXT,
  milestone TEXT,
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_issues_project_id ON issues(project_id);
CREATE INDEX IF NOT EXISTS idx_issues_state ON issues(state);

ALTER TABLE issues ENABLE ROW LEVEL SECURITY;

CREATE POLICY "Users can manage issues in their projects" ON issues
  FOR ALL USING (
    EXISTS (SELECT 1 FROM projects WHERE projects.id = issues.project_id AND projects.user_id = auth.uid())
  );

-- ============================================
-- TRIGGER: Auto-create profile on user signup
-- ============================================
CREATE OR REPLACE FUNCTION handle_new_user()
RETURNS TRIGGER AS $$
BEGIN
  INSERT INTO public.profiles (id, email, full_name, avatar_url, role)
  VALUES (
    NEW.id,
    NEW.email,
    COALESCE(NEW.raw_user_meta_data->>'full_name', NEW.raw_user_meta_data->>'name', split_part(NEW.email, '@', 1)),
    COALESCE(NEW.raw_user_meta_data->>'avatar_url', NEW.raw_user_meta_data->>'picture'),
    'user'
  );

  -- Also create a default free subscription
  INSERT INTO public.subscriptions (user_id, plan, status)
  VALUES (NEW.id, 'free', 'active');

  -- Create a default personal team
  INSERT INTO public.teams (name, owner_id, plan)
  VALUES (
    COALESCE(NEW.raw_user_meta_data->>'full_name', split_part(NEW.email, '@', 1)) || '''s Team',
    NEW.id,
    'free'
  );

  -- Add user as owner of their team
  INSERT INTO public.team_members (team_id, user_id, role)
  SELECT id, NEW.id, 'owner' FROM public.teams WHERE owner_id = NEW.id LIMIT 1;

  RETURN NEW;
END;
$$ LANGUAGE plpgsql SECURITY DEFINER;

-- Create the trigger on auth.users
DROP TRIGGER IF EXISTS on_auth_user_created ON auth.users;
CREATE TRIGGER on_auth_user_created
  AFTER INSERT ON auth.users
  FOR EACH ROW EXECUTE FUNCTION handle_new_user();

-- ============================================
-- TRIGGER: Update updated_at timestamp
-- ============================================
CREATE OR REPLACE FUNCTION update_updated_at()
RETURNS TRIGGER AS $$
BEGIN
  NEW.updated_at = NOW();
  RETURN NEW;
END;
$$ LANGUAGE plpgsql;

-- Add updated_at triggers
DROP TRIGGER IF EXISTS profiles_updated_at ON profiles;
CREATE TRIGGER profiles_updated_at BEFORE UPDATE ON profiles
  FOR EACH ROW EXECUTE FUNCTION update_updated_at();

DROP TRIGGER IF EXISTS teams_updated_at ON teams;
CREATE TRIGGER teams_updated_at BEFORE UPDATE ON teams
  FOR EACH ROW EXECUTE FUNCTION update_updated_at();

DROP TRIGGER IF EXISTS subscriptions_updated_at ON subscriptions;
CREATE TRIGGER subscriptions_updated_at BEFORE UPDATE ON subscriptions
  FOR EACH ROW EXECUTE FUNCTION update_updated_at();

DROP TRIGGER IF EXISTS issues_updated_at ON issues;
CREATE TRIGGER issues_updated_at BEFORE UPDATE ON issues
  FOR EACH ROW EXECUTE FUNCTION update_updated_at();

-- ============================================
-- COMMENTS
-- ============================================
COMMENT ON TABLE profiles IS 'User profiles linked to auth.users';
COMMENT ON FUNCTION handle_new_user() IS 'Auto-creates profile, subscription, and personal team on user signup';
COMMENT ON TABLE teams IS 'Teams for multi-user collaboration';
COMMENT ON TABLE team_members IS 'Team membership with roles';
COMMENT ON TABLE subscriptions IS 'User subscription status for billing';
COMMENT ON TABLE messages IS 'Chat messages in project context';
COMMENT ON TABLE agent_runs IS 'AI agent execution history';
COMMENT ON TABLE issues IS 'Project issues synced with Gitea';