-- Unify IPTV ownership under ViewerUser (Option C); keep legacy addon-token lines.

ALTER TABLE "iptv_lines" ADD COLUMN IF NOT EXISTS "viewer_user_id" TEXT;
ALTER TABLE "iptv_lines" ALTER COLUMN "addon_token_id" DROP NOT NULL;

CREATE UNIQUE INDEX IF NOT EXISTS "iptv_lines_viewer_user_id_key" ON "iptv_lines"("viewer_user_id");

ALTER TABLE "addon_tokens" ADD COLUMN IF NOT EXISTS "viewer_user_id" TEXT;
CREATE INDEX IF NOT EXISTS "addon_tokens_viewer_user_id_idx" ON "addon_tokens"("viewer_user_id");

-- Gebruikers die via legacy iptvAddonTokenId wezen → eigenaar van die lijn
UPDATE "iptv_lines" AS l
SET "viewer_user_id" = v."id"
FROM "viewer_users" AS v
WHERE v."iptv_addon_token_id" IS NOT NULL
  AND v."iptv_addon_token_id" = l."addon_token_id"
  AND l."viewer_user_id" IS NULL;

-- Stremio-addons die die gebruikers gebruikten → koppel aan gebruiker
UPDATE "addon_tokens" AS t
SET "viewer_user_id" = v."id"
FROM "viewer_users" AS v
WHERE v."iptv_addon_token_id" IS NOT NULL
  AND v."iptv_addon_token_id" = t."id"
  AND t."viewer_user_id" IS NULL;

DO $$ BEGIN
  ALTER TABLE "iptv_lines"
    ADD CONSTRAINT "iptv_lines_viewer_user_id_fkey"
    FOREIGN KEY ("viewer_user_id") REFERENCES "viewer_users"("id")
    ON DELETE CASCADE ON UPDATE CASCADE;
EXCEPTION WHEN duplicate_object THEN NULL;
END $$;

DO $$ BEGIN
  ALTER TABLE "addon_tokens"
    ADD CONSTRAINT "addon_tokens_viewer_user_id_fkey"
    FOREIGN KEY ("viewer_user_id") REFERENCES "viewer_users"("id")
    ON DELETE SET NULL ON UPDATE CASCADE;
EXCEPTION WHEN duplicate_object THEN NULL;
END $$;