import json
import unittest
from unittest.mock import Mock, patch

from app.services.worker_control_service import WORKER_CONTROL_CHANNEL, WORKER_PENDING_COMMAND_KEY, send_worker_command


class WorkerControlServiceTests(unittest.TestCase):
    @patch("app.services.worker_control_service.get_redis")
    def test_send_worker_command_persists_request_id_and_publishes_same_payload(self, mock_get_redis) -> None:
        redis_client = Mock()
        mock_get_redis.return_value = redis_client

        ok, message = send_worker_command(
            "start_detection",
            payload={"job_id": 1, "job_code": "detect-20260419030000-abc123"},
        )

        self.assertTrue(ok)
        self.assertIn("已发送 Worker 控制指令", message)

        redis_client.set.assert_called_once()
        set_args = redis_client.set.call_args.args
        self.assertEqual(WORKER_PENDING_COMMAND_KEY, set_args[0])
        serialized = set_args[1]
        self.assertEqual(120, redis_client.set.call_args.kwargs["ex"])

        payload = json.loads(serialized)
        self.assertEqual("start_detection", payload["action"])
        self.assertEqual(1, payload["job_id"])
        self.assertEqual("detect-20260419030000-abc123", payload["job_code"])
        self.assertTrue(payload["request_id"].startswith("workerctl-"))

        redis_client.publish.assert_called_once_with(WORKER_CONTROL_CHANNEL, serialized)


if __name__ == "__main__":
    unittest.main()