-- v0.402 P2.1: promo_codes table for discount codes
CREATE TABLE IF NOT EXISTS promo_codes (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  code VARCHAR(50) NOT NULL UNIQUE,
  discount_type VARCHAR(20) NOT NULL,
  discount_value_cents INT NOT NULL,
  valid_from TIMESTAMPTZ,
  valid_until TIMESTAMPTZ,
  max_uses INT DEFAULT NULL,
  used_count INT DEFAULT 0,
  created_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_promo_codes_code ON promo_codes(code);