-- Discount codes for checkout promotions. Each row mirrors a Stripe Coupon +
-- Promotion Code; Stripe enforces the redemption cap / expiry at checkout while
-- this table powers the admin panel's listing + usage tracking and lets us
-- preview a code without a per-render Stripe call. Amounts in kuruş (TRY
-- smallest unit), matching plans.price* / payments.amount.
CREATE TABLE IF NOT EXISTS "discount_codes" (
  "id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
  "code" varchar(50) NOT NULL,
  "stripe_coupon_id" text,
  "stripe_promotion_code_id" text,
  "discount_type" varchar(12) NOT NULL,
  "percent_off" integer,
  "amount_off" integer,
  "duration" varchar(12) DEFAULT 'once' NOT NULL,
  "duration_in_months" integer,
  "max_redemptions" integer,
  "times_redeemed" integer DEFAULT 0 NOT NULL,
  "expires_at" timestamp with time zone,
  "is_active" boolean DEFAULT true NOT NULL,
  "note" text,
  "created_by" uuid,
  "created_at" timestamp with time zone DEFAULT now() NOT NULL,
  "updated_at" timestamp with time zone DEFAULT now() NOT NULL
);
--> statement-breakpoint
DO $$ BEGIN
  ALTER TABLE "discount_codes" ADD CONSTRAINT "discount_codes_created_by_users_id_fk"
    FOREIGN KEY ("created_by") REFERENCES "public"."users"("id") ON DELETE set null;
EXCEPTION WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
CREATE UNIQUE INDEX IF NOT EXISTS "discount_codes_code_idx" ON "discount_codes" USING btree ("code");
--> statement-breakpoint
CREATE INDEX IF NOT EXISTS "discount_codes_active_idx" ON "discount_codes" USING btree ("is_active");