-- ============================================================
-- BharathTrucks — FULL DATABASE SETUP v2.0
-- Run this ONCE in Supabase SQL Editor
-- ============================================================

-- 1. USERS
CREATE TABLE IF NOT EXISTS app_users (
  id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
  username TEXT UNIQUE NOT NULL,
  name TEXT NOT NULL,
  password_hash TEXT NOT NULL,
  role TEXT NOT NULL CHECK (role IN ('driver', 'shipper', 'broker', 'admin')),
  phone TEXT,
  city TEXT,
  state TEXT,
  is_verified BOOLEAN DEFAULT FALSE,
  is_premium BOOLEAN DEFAULT FALSE,
  is_active BOOLEAN DEFAULT TRUE,
  created_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_app_users_role ON app_users(role);
CREATE INDEX IF NOT EXISTS idx_app_users_username ON app_users(username);
CREATE INDEX IF NOT EXISTS idx_app_users_active ON app_users(is_active);
CREATE INDEX IF NOT EXISTS idx_app_users_created ON app_users(created_at DESC);
CREATE INDEX IF NOT EXISTS idx_app_users_phone ON app_users(phone) WHERE phone IS NOT NULL;

-- 2. LOADS
CREATE TABLE IF NOT EXISTS loads (
  id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
  posted_by UUID NOT NULL REFERENCES app_users(id) ON DELETE CASCADE,
  origin_city TEXT NOT NULL,
  destination_city TEXT NOT NULL,
  weight_tons NUMERIC(5,1) NOT NULL,
  truck_type TEXT NOT NULL,
  material_type TEXT,
  budget NUMERIC(10,2),
  pickup_date DATE NOT NULL,
  description TEXT,
  is_urgent BOOLEAN DEFAULT FALSE,
  status TEXT DEFAULT 'open' CHECK (status IN ('open', 'booked', 'in_transit', 'delivered', 'cancelled')),
  bid_count INTEGER DEFAULT 0,
  accepted_bid_id UUID,
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_loads_status ON loads(status);
CREATE INDEX IF NOT EXISTS idx_loads_origin ON loads(origin_city);
CREATE INDEX IF NOT EXISTS idx_loads_destination ON loads(destination_city);
CREATE INDEX IF NOT EXISTS idx_loads_posted_by ON loads(posted_by);
CREATE INDEX IF NOT EXISTS idx_loads_status_created ON loads(status, created_at DESC);
CREATE INDEX IF NOT EXISTS idx_loads_truck_type ON loads(truck_type);
CREATE INDEX IF NOT EXISTS idx_loads_urgent ON loads(is_urgent) WHERE is_urgent = true;

-- 3. BIDS
CREATE INDEX IF NOT EXISTS idx_bids_load ON bids(load_id);
CREATE INDEX IF NOT EXISTS idx_bids_driver ON bids(driver_id);
CREATE INDEX IF NOT EXISTS idx_bids_status ON bids(status);
CREATE INDEX IF NOT EXISTS idx_bids_load_driver ON bids(load_id, driver_id);

-- 4. TRIPS
CREATE INDEX IF NOT EXISTS idx_trips_driver ON trips(driver_id);
CREATE INDEX IF NOT EXISTS idx_trips_shipper ON trips(shipper_id);
CREATE INDEX IF NOT EXISTS idx_trips_status ON trips(status);
CREATE INDEX IF NOT EXISTS idx_trips_driver_status ON trips(driver_id, status);
CREATE INDEX IF NOT EXISTS idx_trips_shipper_status ON trips(shipper_id, status);
CREATE INDEX IF NOT EXISTS idx_trips_created ON trips(created_at DESC);

-- 5. MESSAGES
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);
CREATE INDEX IF NOT EXISTS idx_messages_conversation ON messages(sender_id, receiver_id, created_at DESC);
CREATE INDEX IF NOT EXISTS idx_messages_load ON messages(load_id) WHERE load_id IS NOT NULL;

-- 6. TRIGGERS
CREATE OR REPLACE FUNCTION increment_bid_count()
RETURNS TRIGGER AS $$ BEGIN UPDATE loads SET bid_count = bid_count + 1 WHERE id = NEW.load_id; RETURN NEW; END; $$ LANGUAGE plpgsql;
DROP TRIGGER IF EXISTS bid_count_trigger ON bids;
CREATE TRIGGER bid_count_trigger AFTER INSERT ON bids FOR EACH ROW EXECUTE FUNCTION increment_bid_count();

CREATE OR REPLACE FUNCTION update_updated_at()
RETURNS TRIGGER AS $$ BEGIN NEW.updated_at = NOW(); RETURN NEW; END; $$ LANGUAGE plpgsql;
DROP TRIGGER IF EXISTS loads_updated_at ON loads;
CREATE TRIGGER loads_updated_at BEFORE UPDATE ON loads FOR EACH ROW EXECUTE FUNCTION update_updated_at();

-- Add updated_at to trips if not exists
DO $$ BEGIN
  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name = 'trips' AND column_name = 'updated_at') THEN
    ALTER TABLE trips ADD COLUMN updated_at TIMESTAMPTZ DEFAULT NOW();
    CREATE TRIGGER trips_updated_at BEFORE UPDATE ON trips FOR EACH ROW EXECUTE FUNCTION update_updated_at();
  END IF;
END $$;

-- 7. RLS (open for now — tighten later)
ALTER TABLE app_users ENABLE ROW LEVEL SECURITY;
ALTER TABLE loads ENABLE ROW LEVEL SECURITY;
ALTER TABLE bids ENABLE ROW LEVEL SECURITY;
ALTER TABLE trips ENABLE ROW LEVEL SECURITY;
ALTER TABLE messages ENABLE ROW LEVEL SECURITY;

DROP POLICY IF EXISTS "open" ON app_users;
DROP POLICY IF EXISTS "open" ON loads;
DROP POLICY IF EXISTS "open" ON bids;
DROP POLICY IF EXISTS "open" ON trips;
DROP POLICY IF EXISTS "open" ON messages;

CREATE POLICY "open" ON app_users FOR ALL USING (true) WITH CHECK (true);
CREATE POLICY "open" ON loads FOR ALL USING (true) WITH CHECK (true);
CREATE POLICY "open" ON bids FOR ALL USING (true) WITH CHECK (true);
CREATE POLICY "open" ON trips FOR ALL USING (true) WITH CHECK (true);
CREATE POLICY "open" ON messages FOR ALL USING (true) WITH CHECK (true);

-- 8. SEED ADMIN USER (password: admin123)
INSERT INTO app_users (username, name, password_hash, role) VALUES
  ('admin', 'Admin', '$2a$10$LAzb105XOhAqSXm1jMUQue0fp/lrUJBhsLgkobOQTeU.8Jh4rTaoq', 'admin')
ON CONFLICT (username) DO NOTHING;

-- ============================================================
-- DONE! Your database is ready.
-- Admin login: username=admin, password=admin123
-- ============================================================