-- GDPR-retention pseudonyms (docs/29).
-- Financial/audit records are retained for legal/tax/dispute purposes,
-- but the natural person must not be directly identifiable after deletion.
CREATE TABLE IF NOT EXISTS "gdpr_retention_pseudonyms" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"user_id" uuid NOT NULL REFERENCES "public"."users"("id") ON DELETE cascade,
	"pseudonym" uuid NOT NULL,
	"retention_until" timestamp with time zone NOT NULL,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
	"deleted_at" timestamp with time zone,
	CONSTRAINT "gdpr_retention_pseudonyms_user_id_unique" UNIQUE("user_id"),
	CONSTRAINT "gdpr_retention_pseudonyms_pseudonym_unique" UNIQUE("pseudonym")
);
--> statement-breakpoint
ALTER TABLE "subscriptions" DROP CONSTRAINT IF EXISTS "subscriptions_user_id_users_id_fk";
--> statement-breakpoint
ALTER TABLE "subscriptions" ALTER COLUMN "user_id" DROP NOT NULL;
--> statement-breakpoint
ALTER TABLE "subscriptions" ADD COLUMN IF NOT EXISTS "pseudonym" uuid;
--> statement-breakpoint
DO $$
BEGIN
	ALTER TABLE "subscriptions" ADD CONSTRAINT "subscriptions_user_id_users_id_fk"
		FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE set null;
EXCEPTION WHEN duplicate_object THEN
	NULL;
END $$;
--> statement-breakpoint
DO $$
BEGIN
	ALTER TABLE "subscriptions" ADD CONSTRAINT "subscriptions_pseudonym_gdpr_retention_pseudonyms_pseudonym_fk"
		FOREIGN KEY ("pseudonym") REFERENCES "public"."gdpr_retention_pseudonyms"("pseudonym") ON DELETE set null;
EXCEPTION WHEN duplicate_object THEN
	NULL;
END $$;
--> statement-breakpoint
ALTER TABLE "subscription_events" ADD COLUMN IF NOT EXISTS "pseudonym" uuid;
--> statement-breakpoint
DO $$
BEGIN
	ALTER TABLE "subscription_events" ADD CONSTRAINT "subscription_events_pseudonym_gdpr_retention_pseudonyms_pseudonym_fk"
		FOREIGN KEY ("pseudonym") REFERENCES "public"."gdpr_retention_pseudonyms"("pseudonym") ON DELETE set null;
EXCEPTION WHEN duplicate_object THEN
	NULL;
END $$;
--> statement-breakpoint
ALTER TABLE "store_transactions" ADD COLUMN IF NOT EXISTS "pseudonym" uuid;
--> statement-breakpoint
DO $$
BEGIN
	ALTER TABLE "store_transactions" ADD CONSTRAINT "store_transactions_pseudonym_gdpr_retention_pseudonyms_pseudonym_fk"
		FOREIGN KEY ("pseudonym") REFERENCES "public"."gdpr_retention_pseudonyms"("pseudonym") ON DELETE set null;
EXCEPTION WHEN duplicate_object THEN
	NULL;
END $$;
--> statement-breakpoint
ALTER TABLE "cooking_sessions" DROP CONSTRAINT IF EXISTS "cooking_sessions_started_by_user_id_users_id_fk";
--> statement-breakpoint
ALTER TABLE "cooking_sessions" ALTER COLUMN "started_by_user_id" DROP NOT NULL;
--> statement-breakpoint
DO $$
BEGIN
	ALTER TABLE "cooking_sessions" ADD CONSTRAINT "cooking_sessions_started_by_user_id_users_id_fk"
		FOREIGN KEY ("started_by_user_id") REFERENCES "public"."users"("id") ON DELETE set null;
EXCEPTION WHEN duplicate_object THEN
	NULL;
END $$;
--> statement-breakpoint
CREATE INDEX IF NOT EXISTS "gdpr_retention_pseudonyms_user_idx" ON "gdpr_retention_pseudonyms" USING btree ("user_id");
--> statement-breakpoint
CREATE INDEX IF NOT EXISTS "gdpr_retention_pseudonyms_pseudonym_idx" ON "gdpr_retention_pseudonyms" USING btree ("pseudonym");
--> statement-breakpoint
CREATE INDEX IF NOT EXISTS "subscriptions_pseudonym_idx" ON "subscriptions" USING btree ("pseudonym");
--> statement-breakpoint
CREATE INDEX IF NOT EXISTS "subscription_events_pseudonym_idx" ON "subscription_events" USING btree ("pseudonym");
--> statement-breakpoint
CREATE INDEX IF NOT EXISTS "store_transactions_pseudonym_idx" ON "store_transactions" USING btree ("pseudonym");