ALTER TABLE "SmsMessageRecord" ADD COLUMN "drainageGate" JSONB;
ALTER TABLE "SmsSubmitRecord" ADD COLUMN "drainageGate" JSONB;
ALTER TABLE "SmsMessageRecord" ADD COLUMN "drainageReceiptPending" BOOLEAN NOT NULL DEFAULT false;
CREATE INDEX "SmsMessageRecord_drainage_receipt_pending" ON "SmsMessageRecord" ("updatedAt") WHERE "drainageReceiptPending" = true;
CREATE TABLE "SmsDrainageDecision" (
  "id" TEXT PRIMARY KEY,
  "messageRecordId" TEXT NOT NULL,
  "decidedAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "snapshot" JSONB NOT NULL
);
CREATE INDEX "SmsDrainageDecision_messageRecordId_decidedAt_idx" ON "SmsDrainageDecision" ("messageRecordId", "decidedAt");

CREATE OR REPLACE FUNCTION drainage_authorization_lock() RETURNS trigger LANGUAGE plpgsql AS $$
BEGIN
  IF TG_OP = 'UPDATE' AND OLD."signatureId" IS DISTINCT FROM NEW."signatureId" THEN
    PERFORM pg_advisory_xact_lock(hashtextextended(value, 910))
      FROM unnest(ARRAY[OLD."signatureId", NEW."signatureId"]) AS ids(value) ORDER BY value;
    RETURN NEW;
  END IF;
  IF TG_OP = 'DELETE' THEN
    PERFORM pg_advisory_xact_lock(hashtextextended(OLD."signatureId", 910));
    RETURN OLD;
  END IF;
  PERFORM pg_advisory_xact_lock(hashtextextended(NEW."signatureId", 910));
  RETURN NEW;
END $$;
CREATE TRIGGER drainage_material_authorization_lock BEFORE INSERT OR UPDATE OR DELETE ON "SmsDrainageInfo"
FOR EACH ROW EXECUTE FUNCTION drainage_authorization_lock();
CREATE TRIGGER drainage_report_authorization_lock BEFORE INSERT OR UPDATE OR DELETE ON "ChannelSignatureReportTask"
FOR EACH ROW EXECUTE FUNCTION drainage_authorization_lock();