CREATE TABLE IF NOT EXISTS users (
  id TEXT PRIMARY KEY,
  email TEXT NOT NULL UNIQUE,
  full_name TEXT,
  role TEXT NOT NULL DEFAULT 'passenger',
  username TEXT UNIQUE,
  mauth_token TEXT,
  phone TEXT,
  citizen_id TEXT,
  is_banned INTEGER DEFAULT 0,
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP
);
CREATE TABLE IF NOT EXISTS companion_safety_profiles (
  user_email TEXT PRIMARY KEY,
  persona_label TEXT NOT NULL,
  safety_consent INTEGER NOT NULL DEFAULT 0,
  background_check_status TEXT NOT NULL DEFAULT 'not_started',
  reviewed_at TEXT,
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_email) REFERENCES users(email)
);
CREATE TABLE IF NOT EXISTS companion_circles (
  id TEXT PRIMARY KEY,
  name TEXT NOT NULL,
  cadence TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'forming',
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP
);
CREATE TABLE IF NOT EXISTS companion_circle_members (
  circle_id TEXT NOT NULL,
  user_email TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'invited',
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (circle_id, user_email),
  FOREIGN KEY (circle_id) REFERENCES companion_circles(id),
  FOREIGN KEY (user_email) REFERENCES users(email)
);
CREATE TABLE IF NOT EXISTS companion_activities (
  id TEXT PRIMARY KEY,
  circle_id TEXT NOT NULL,
  created_by_email TEXT NOT NULL,
  title TEXT NOT NULL,
  description TEXT,
  location_label TEXT NOT NULL,
  starts_at TEXT NOT NULL,
  max_attendees INTEGER,
  status TEXT NOT NULL DEFAULT 'planned',
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (circle_id) REFERENCES companion_circles(id),
  FOREIGN KEY (created_by_email) REFERENCES users(email)
);
CREATE TABLE IF NOT EXISTS companion_activity_rsvps (
  activity_id TEXT NOT NULL,
  user_email TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'going',
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (activity_id, user_email),
  FOREIGN KEY (activity_id) REFERENCES companion_activities(id),
  FOREIGN KEY (user_email) REFERENCES users(email)
);
CREATE TABLE IF NOT EXISTS driver_profiles (
  id TEXT PRIMARY KEY,
  user_email TEXT NOT NULL UNIQUE,
  vehicle_make TEXT NOT NULL,
  vehicle_model TEXT NOT NULL,
  license_plate TEXT NOT NULL,
  vehicle_color TEXT NOT NULL,
  is_available INTEGER NOT NULL DEFAULT 0,
  current_lat REAL,
  current_lng REAL,
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_email) REFERENCES users(email)
);
CREATE TABLE IF NOT EXISTS rides (
  id TEXT PRIMARY KEY,
  passenger_email TEXT NOT NULL,
  driver_email TEXT,
  pickup_location TEXT NOT NULL,
  pickup_lat REAL NOT NULL,
  pickup_lng REAL NOT NULL,
  destination_location TEXT NOT NULL,
  destination_lat REAL NOT NULL,
  destination_lng REAL NOT NULL,
  status TEXT NOT NULL DEFAULT 'requested',
  driver_lat REAL,
  driver_lng REAL,
  rating INTEGER,
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (passenger_email) REFERENCES users(email),
  FOREIGN KEY (driver_email) REFERENCES users(email)
);
CREATE TABLE IF NOT EXISTS orders (
  order_id TEXT PRIMARY KEY,
  user_email TEXT NOT NULL,
  amount REAL NOT NULL,
  currency TEXT NOT NULL DEFAULT 'INR',
  status TEXT NOT NULL DEFAULT 'PENDING',
  payment_session_id TEXT NOT NULL,
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  updated_at TEXT DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_email) REFERENCES users(email)
);
CREATE TABLE IF NOT EXISTS notifications (
  id TEXT PRIMARY KEY,
  recipient_email TEXT NOT NULL,
  type TEXT NOT NULL DEFAULT 'info',
  title TEXT NOT NULL,
  body TEXT,
  link TEXT,
  actor_email TEXT,
  is_read INTEGER NOT NULL DEFAULT 0,
  created_at TEXT DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (recipient_email) REFERENCES users(email),
  FOREIGN KEY (actor_email) REFERENCES users(email)
);
CREATE INDEX IF NOT EXISTS idx_users_email ON users(email);
CREATE INDEX IF NOT EXISTS idx_companion_circle_members_user ON companion_circle_members(user_email);
CREATE INDEX IF NOT EXISTS idx_companion_activities_circle ON companion_activities(circle_id);
CREATE INDEX IF NOT EXISTS idx_companion_activity_rsvps_user ON companion_activity_rsvps(user_email);
CREATE INDEX IF NOT EXISTS idx_driver_profiles_user ON driver_profiles(user_email);
CREATE INDEX IF NOT EXISTS idx_rides_passenger ON rides(passenger_email);
CREATE INDEX IF NOT EXISTS idx_rides_driver ON rides(driver_email);
CREATE INDEX IF NOT EXISTS idx_orders_user ON orders(user_email);
CREATE INDEX IF NOT EXISTS idx_notifications_recipient ON notifications(recipient_email, is_read);
CREATE UNIQUE INDEX IF NOT EXISTS idx_users_email ON users(email);