-- Support / maintenance subscriptions (0..N per tenant), with optional free periods.
CREATE TABLE "public"."support_subscriptions" (
    "id" TEXT NOT NULL,
    "tenant_id" TEXT NOT NULL,
    "name" TEXT NOT NULL,
    "specs" TEXT,
    "price_rials" INTEGER,
    "is_free" BOOLEAN NOT NULL DEFAULT false,
    "charged_at" TIMESTAMP(3),
    "plan_months" INTEGER,
    "expires_at" TIMESTAMP(3),
    "description" TEXT,
    "alert_days_before" INTEGER NOT NULL DEFAULT 3,
    "last_alert_date" TIMESTAMP(3),
    "is_active" BOOLEAN NOT NULL DEFAULT true,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "support_subscriptions_pkey" PRIMARY KEY ("id")
);

CREATE TABLE "public"."support_charges" (
    "id" TEXT NOT NULL,
    "support_id" TEXT NOT NULL,
    "charged_at" TIMESTAMP(3) NOT NULL,
    "plan_months" INTEGER NOT NULL,
    "price_rials" INTEGER NOT NULL,
    "is_free" BOOLEAN NOT NULL DEFAULT false,
    "expires_at" TIMESTAMP(3) NOT NULL,
    "note" TEXT,
    "created_by_id" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "support_charges_pkey" PRIMARY KEY ("id")
);

CREATE INDEX "support_subscriptions_tenant_id_idx" ON "public"."support_subscriptions"("tenant_id");
CREATE INDEX "support_subscriptions_expires_at_idx" ON "public"."support_subscriptions"("expires_at");
CREATE INDEX "support_subscriptions_is_active_idx" ON "public"."support_subscriptions"("is_active");
CREATE INDEX "support_subscriptions_is_free_idx" ON "public"."support_subscriptions"("is_free");
CREATE INDEX "support_charges_support_id_idx" ON "public"."support_charges"("support_id");
CREATE INDEX "support_charges_created_at_idx" ON "public"."support_charges"("created_at");

ALTER TABLE "public"."support_subscriptions" ADD CONSTRAINT "support_subscriptions_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "public"."tenants"("id") ON DELETE CASCADE ON UPDATE CASCADE;
ALTER TABLE "public"."support_charges" ADD CONSTRAINT "support_charges_support_id_fkey" FOREIGN KEY ("support_id") REFERENCES "public"."support_subscriptions"("id") ON DELETE CASCADE ON UPDATE CASCADE;