"""异步任务管理器测试"""

import asyncio
import pytest
from unittest.mock import AsyncMock, MagicMock, patch
from fastapi import status

from functional_scaffold.core.job_manager import (
    JobManager,
)


class TestJobManager:
    """测试 JobManager 类"""

    @pytest.fixture
    def mock_redis(self):
        """模拟 Redis 客户端"""
        mock = AsyncMock()
        mock.ping = AsyncMock(return_value=True)
        mock.hset = AsyncMock()
        mock.hgetall = AsyncMock(return_value={})
        mock.expire = AsyncMock()
        mock.close = AsyncMock()
        return mock

    @pytest.fixture
    def mock_http_client(self):
        """模拟 HTTP 客户端"""
        mock = AsyncMock()
        mock.post = AsyncMock()
        mock.aclose = AsyncMock()
        return mock

    @pytest.mark.asyncio
    async def test_generate_job_id(self):
        """测试任务 ID 生成"""
        manager = JobManager()
        job_id = manager._generate_job_id()

        assert len(job_id) == 12
        assert all(c in "0123456789abcdef" for c in job_id)

    @pytest.mark.asyncio
    async def test_get_timestamp(self):
        """测试时间戳生成"""
        manager = JobManager()
        timestamp = manager._get_timestamp()

        assert "T" in timestamp
        assert timestamp.endswith("+00:00") or timestamp.endswith("Z")

    @pytest.mark.asyncio
    async def test_get_available_algorithms(self):
        """测试获取可用算法列表"""
        manager = JobManager()
        manager._register_algorithms()

        algorithms = manager.get_available_algorithms()

        assert "PrimeChecker" in algorithms

    @pytest.mark.asyncio
    async def test_is_available_without_redis(self):
        """测试 Redis 不可用时的状态"""
        manager = JobManager()

        assert manager.is_available() is False


class TestJobManagerWithMocks:
    """使用 Mock 测试 JobManager"""

    @pytest.mark.asyncio
    async def test_create_job(self):
        """测试创建任务"""
        manager = JobManager()

        # 模拟 Redis
        mock_redis = AsyncMock()
        mock_redis.hset = AsyncMock()
        manager._redis_client = mock_redis
        manager._register_algorithms()

        job_id = await manager.create_job(
            algorithm="PrimeChecker",
            params={"number": 17},
            webhook="https://example.com/callback",
            request_id="test-request-id",
        )

        assert len(job_id) == 12
        mock_redis.hset.assert_called_once()

    @pytest.mark.asyncio
    async def test_create_job_invalid_algorithm(self):
        """测试创建任务时算法不存在"""
        manager = JobManager()

        mock_redis = AsyncMock()
        manager._redis_client = mock_redis
        manager._register_algorithms()

        with pytest.raises(ValueError, match="不存在"):
            await manager.create_job(
                algorithm="NonExistentAlgorithm",
                params={},
            )

    @pytest.mark.asyncio
    async def test_create_job_redis_unavailable(self):
        """测试 Redis 不可用时创建任务"""
        manager = JobManager()
        manager._register_algorithms()

        with pytest.raises(RuntimeError, match="Redis 不可用"):
            await manager.create_job(
                algorithm="PrimeChecker",
                params={"number": 17},
            )

    @pytest.mark.asyncio
    async def test_get_job(self):
        """测试获取任务信息"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.hgetall = AsyncMock(
            return_value={
                "status": "completed",
                "algorithm": "PrimeChecker",
                "created_at": "2026-02-02T10:00:00+00:00",
                "started_at": "2026-02-02T10:00:01+00:00",
                "completed_at": "2026-02-02T10:00:02+00:00",
                "result": '{"number": 17, "is_prime": true}',
                "error": "",
                "metadata": '{"elapsed_time": 0.001}',
            }
        )
        manager._redis_client = mock_redis

        job_data = await manager.get_job("test-job-id")

        assert job_data is not None
        assert job_data["job_id"] == "test-job-id"
        assert job_data["status"] == "completed"
        assert job_data["algorithm"] == "PrimeChecker"
        assert job_data["result"]["number"] == 17
        assert job_data["result"]["is_prime"] is True

    @pytest.mark.asyncio
    async def test_get_job_not_found(self):
        """测试获取不存在的任务"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.hgetall = AsyncMock(return_value={})
        manager._redis_client = mock_redis

        job_data = await manager.get_job("non-existent-job")

        assert job_data is None

    @pytest.mark.asyncio
    async def test_execute_job(self):
        """测试执行任务"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.hgetall = AsyncMock(
            return_value={
                "status": "pending",
                "algorithm": "PrimeChecker",
                "params": '{"number": 17}',
                "webhook": "",
                "request_id": "test-request-id",
                "created_at": "2026-02-02T10:00:00+00:00",
            }
        )
        mock_redis.hset = AsyncMock()
        mock_redis.expire = AsyncMock()
        manager._redis_client = mock_redis
        manager._register_algorithms()

        # 初始化 semaphore
        import asyncio

        manager._semaphore = asyncio.Semaphore(10)

        await manager.execute_job("test-job-id")

        # 验证状态更新被调用
        assert mock_redis.hset.call_count >= 2  # running + completed
        mock_redis.expire.assert_called_once()


class TestJobsAPI:
    """测试 /jobs API 端点"""

    def test_create_job_success(self, client):
        """测试成功创建任务"""
        with patch(
            "functional_scaffold.api.routes.get_job_manager", new_callable=AsyncMock
        ) as mock_get_manager:
            mock_manager = MagicMock()
            mock_manager.is_available.return_value = True
            mock_manager.get_available_algorithms.return_value = ["PrimeChecker"]
            mock_manager.create_job = AsyncMock(return_value="abc123def456")
            mock_manager.get_job = AsyncMock(
                return_value={
                    "job_id": "abc123def456",
                    "status": "pending",
                    "algorithm": "PrimeChecker",
                    "created_at": "2026-02-02T10:00:00+00:00",
                }
            )
            mock_manager.enqueue_job = AsyncMock(return_value=True)
            mock_get_manager.return_value = mock_manager

            response = client.post(
                "/jobs",
                json={
                    "algorithm": "PrimeChecker",
                    "params": {"number": 17},
                },
            )

            assert response.status_code == status.HTTP_202_ACCEPTED
            data = response.json()
            assert data["job_id"] == "abc123def456"
            assert data["status"] == "pending"
            assert data["message"] == "任务已创建"

    def test_create_job_algorithm_not_found(self, client):
        """测试创建任务时算法不存在"""
        with patch(
            "functional_scaffold.api.routes.get_job_manager", new_callable=AsyncMock
        ) as mock_get_manager:
            mock_manager = MagicMock()
            mock_manager.is_available.return_value = True
            mock_manager.get_available_algorithms.return_value = ["PrimeChecker"]
            mock_get_manager.return_value = mock_manager

            response = client.post(
                "/jobs",
                json={
                    "algorithm": "NonExistentAlgorithm",
                    "params": {},
                },
            )

            assert response.status_code == status.HTTP_404_NOT_FOUND
            data = response.json()
            assert data["detail"]["error"] == "ALGORITHM_NOT_FOUND"

    def test_create_job_service_unavailable(self, client):
        """测试服务不可用时创建任务"""
        with patch(
            "functional_scaffold.api.routes.get_job_manager", new_callable=AsyncMock
        ) as mock_get_manager:
            mock_manager = MagicMock()
            mock_manager.is_available.return_value = False
            mock_get_manager.return_value = mock_manager

            response = client.post(
                "/jobs",
                json={
                    "algorithm": "PrimeChecker",
                    "params": {"number": 17},
                },
            )

            assert response.status_code == status.HTTP_503_SERVICE_UNAVAILABLE

    def test_get_job_status_success(self, client):
        """测试成功查询任务状态"""
        with patch(
            "functional_scaffold.api.routes.get_job_manager", new_callable=AsyncMock
        ) as mock_get_manager:
            mock_manager = MagicMock()
            mock_manager.is_available.return_value = True
            mock_manager.get_job = AsyncMock(
                return_value={
                    "job_id": "abc123def456",
                    "status": "completed",
                    "algorithm": "PrimeChecker",
                    "created_at": "2026-02-02T10:00:00+00:00",
                    "started_at": "2026-02-02T10:00:01+00:00",
                    "completed_at": "2026-02-02T10:00:02+00:00",
                    "result": {"number": 17, "is_prime": True},
                    "error": None,
                    "metadata": {"elapsed_time": 0.001},
                }
            )
            mock_get_manager.return_value = mock_manager

            response = client.get("/jobs/abc123def456")

            assert response.status_code == status.HTTP_200_OK
            data = response.json()
            assert data["job_id"] == "abc123def456"
            assert data["status"] == "completed"
            assert data["result"]["is_prime"] is True

    def test_get_job_status_not_found(self, client):
        """测试查询不存在的任务"""
        with patch(
            "functional_scaffold.api.routes.get_job_manager", new_callable=AsyncMock
        ) as mock_get_manager:
            mock_manager = MagicMock()
            mock_manager.is_available.return_value = True
            mock_manager.get_job = AsyncMock(return_value=None)
            mock_get_manager.return_value = mock_manager

            response = client.get("/jobs/non-existent-job")

            assert response.status_code == status.HTTP_404_NOT_FOUND
            data = response.json()
            assert data["detail"]["error"] == "JOB_NOT_FOUND"

    def test_get_job_status_service_unavailable(self, client):
        """测试服务不可用时查询任务"""
        with patch(
            "functional_scaffold.api.routes.get_job_manager", new_callable=AsyncMock
        ) as mock_get_manager:
            mock_manager = MagicMock()
            mock_manager.is_available.return_value = False
            mock_get_manager.return_value = mock_manager

            response = client.get("/jobs/abc123def456")

            assert response.status_code == status.HTTP_503_SERVICE_UNAVAILABLE


class TestWebhook:
    """测试 Webhook 回调"""

    @pytest.mark.asyncio
    async def test_send_webhook_success(self):
        """测试成功发送 Webhook"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.hgetall = AsyncMock(
            return_value={
                "status": "completed",
                "algorithm": "PrimeChecker",
                "created_at": "2026-02-02T10:00:00+00:00",
                "completed_at": "2026-02-02T10:00:02+00:00",
                "result": '{"number": 17, "is_prime": true}',
                "error": "",
                "metadata": '{"elapsed_time": 0.001}',
            }
        )
        manager._redis_client = mock_redis

        mock_response = MagicMock()
        mock_response.status_code = 200

        mock_http = AsyncMock()
        mock_http.post = AsyncMock(return_value=mock_response)
        manager._http_client = mock_http

        await manager._send_webhook("test-job-id", "https://example.com/callback")

        mock_http.post.assert_called_once()
        call_args = mock_http.post.call_args
        assert call_args[0][0] == "https://example.com/callback"
        assert "json" in call_args[1]

    @pytest.mark.asyncio
    async def test_send_webhook_retry_on_failure(self):
        """测试 Webhook 失败时重试"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.hgetall = AsyncMock(
            return_value={
                "status": "completed",
                "algorithm": "PrimeChecker",
                "created_at": "2026-02-02T10:00:00+00:00",
                "completed_at": "2026-02-02T10:00:02+00:00",
                "result": "{}",
                "error": "",
                "metadata": "{}",
            }
        )
        manager._redis_client = mock_redis

        mock_http = AsyncMock()
        mock_http.post = AsyncMock(side_effect=Exception("Connection error"))
        manager._http_client = mock_http

        # 使用较短的重试间隔进行测试
        with patch("functional_scaffold.core.job_manager.settings") as mock_settings:
            mock_settings.webhook_max_retries = 2
            mock_settings.webhook_timeout = 1

            await manager._send_webhook("test-job-id", "https://example.com/callback")

        # 验证重试次数
        assert mock_http.post.call_count == 2


class TestConcurrencyControl:
    """测试并发控制功能"""

    @pytest.mark.asyncio
    async def test_get_concurrency_status(self):
        """测试获取并发状态"""
        manager = JobManager()

        # 初始化 semaphore
        manager._max_concurrent_jobs = 10
        manager._semaphore = asyncio.Semaphore(10)

        status = manager.get_concurrency_status()

        assert status["max_concurrent"] == 10
        assert status["available_slots"] == 10
        assert status["running_jobs"] == 0

    @pytest.mark.asyncio
    async def test_get_concurrency_status_without_semaphore(self):
        """测试未初始化 semaphore 时获取并发状态"""
        manager = JobManager()

        status = manager.get_concurrency_status()

        assert status["max_concurrent"] == 0
        assert status["available_slots"] == 0
        assert status["running_jobs"] == 0

    @pytest.mark.asyncio
    async def test_concurrency_limit(self):
        """测试并发限制是否生效"""
        manager = JobManager()

        # 设置较小的并发限制
        manager._max_concurrent_jobs = 2
        manager._semaphore = asyncio.Semaphore(2)

        # 模拟 Redis
        mock_redis = AsyncMock()
        mock_redis.hgetall = AsyncMock(
            return_value={
                "status": "pending",
                "algorithm": "PrimeChecker",
                "params": '{"number": 17}',
                "webhook": "",
                "request_id": "test-request-id",
                "created_at": "2026-02-02T10:00:00+00:00",
            }
        )
        mock_redis.hset = AsyncMock()
        mock_redis.expire = AsyncMock()
        manager._redis_client = mock_redis
        manager._register_algorithms()

        # 创建一个慢速任务
        async def slow_execute():
            async with manager._semaphore:
                await asyncio.sleep(0.1)

        # 启动 3 个任务
        tasks = [asyncio.create_task(slow_execute()) for _ in range(3)]

        # 等待一小段时间，让前两个任务获取 semaphore
        await asyncio.sleep(0.01)

        # 检查并发状态
        status = manager.get_concurrency_status()
        assert status["running_jobs"] == 2  # 只有 2 个任务在运行
        assert status["available_slots"] == 0  # 没有可用槽位

        # 等待所有任务完成
        await asyncio.gather(*tasks)

        # 检查最终状态
        status = manager.get_concurrency_status()
        assert status["running_jobs"] == 0
        assert status["available_slots"] == 2

    def test_concurrency_status_api(self, client):
        """测试并发状态 API 端点"""
        with patch(
            "functional_scaffold.api.routes.get_job_manager", new_callable=AsyncMock
        ) as mock_get_manager:
            mock_manager = MagicMock()
            mock_manager.is_available.return_value = True
            mock_manager.get_concurrency_status.return_value = {
                "max_concurrent": 10,
                "available_slots": 8,
                "running_jobs": 2,
            }
            mock_get_manager.return_value = mock_manager

            response = client.get("/jobs/concurrency/status")

            assert response.status_code == status.HTTP_200_OK
            data = response.json()

            assert "max_concurrent" in data
            assert "available_slots" in data
            assert "running_jobs" in data
            assert isinstance(data["max_concurrent"], int)
            assert isinstance(data["available_slots"], int)
            assert isinstance(data["running_jobs"], int)


class TestJobQueue:
    """测试任务队列功能"""

    @pytest.mark.asyncio
    async def test_enqueue_job(self):
        """测试任务入队"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.lpush = AsyncMock(return_value=1)
        manager._redis_client = mock_redis

        result = await manager.enqueue_job("test-job-id")

        assert result is True
        mock_redis.lpush.assert_called_once()

    @pytest.mark.asyncio
    async def test_enqueue_job_without_redis(self):
        """测试 Redis 不可用时入队"""
        manager = JobManager()

        result = await manager.enqueue_job("test-job-id")

        assert result is False

    @pytest.mark.asyncio
    async def test_dequeue_job(self):
        """测试任务出队（使用 BLMOVE）"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.blmove = AsyncMock(return_value="test-job-id")
        mock_redis.zadd = AsyncMock()
        manager._redis_client = mock_redis

        result = await manager.dequeue_job(timeout=5)

        assert result == "test-job-id"
        mock_redis.blmove.assert_called_once()
        mock_redis.zadd.assert_called_once()

    @pytest.mark.asyncio
    async def test_dequeue_job_timeout(self):
        """测试任务出队超时"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.blmove = AsyncMock(return_value=None)
        manager._redis_client = mock_redis

        result = await manager.dequeue_job(timeout=1)

        assert result is None

    @pytest.mark.asyncio
    async def test_dequeue_job_without_redis(self):
        """测试 Redis 不可用时出队"""
        manager = JobManager()

        result = await manager.dequeue_job(timeout=1)

        assert result is None


class TestDistributedLock:
    """测试分布式锁功能"""

    @pytest.mark.asyncio
    async def test_acquire_job_lock(self):
        """测试获取任务锁"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.set = AsyncMock(return_value=True)
        manager._redis_client = mock_redis

        result = await manager.acquire_job_lock("test-job-id")

        assert result is not None  # 返回 token
        assert len(result) == 32  # 16 字节的十六进制字符串
        mock_redis.set.assert_called_once()
        call_args = mock_redis.set.call_args
        assert call_args[0][0] == "job:lock:test-job-id"
        assert call_args[1]["nx"] is True
        assert "ex" in call_args[1]

    @pytest.mark.asyncio
    async def test_acquire_job_lock_already_locked(self):
        """测试获取已被锁定的任务锁"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.set = AsyncMock(return_value=None)  # 锁已存在
        manager._redis_client = mock_redis

        result = await manager.acquire_job_lock("test-job-id")

        assert result is None

    @pytest.mark.asyncio
    async def test_release_job_lock(self):
        """测试释放任务锁"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.eval = AsyncMock(return_value=1)
        manager._redis_client = mock_redis

        result = await manager.release_job_lock("test-job-id", "valid-token")

        assert result is True
        mock_redis.eval.assert_called_once()

    @pytest.mark.asyncio
    async def test_release_job_lock_without_redis(self):
        """测试 Redis 不可用时释放锁"""
        manager = JobManager()

        result = await manager.release_job_lock("test-job-id", "token")

        assert result is False


class TestGlobalConcurrency:
    """测试全局并发控制功能"""

    @pytest.mark.asyncio
    async def test_increment_concurrency(self):
        """测试增加并发计数"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.incr = AsyncMock(return_value=5)
        manager._redis_client = mock_redis

        result = await manager.increment_concurrency()

        assert result == 5
        mock_redis.incr.assert_called_once()

    @pytest.mark.asyncio
    async def test_decrement_concurrency(self):
        """测试减少并发计数"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.decr = AsyncMock(return_value=4)
        manager._redis_client = mock_redis

        result = await manager.decrement_concurrency()

        assert result == 4
        mock_redis.decr.assert_called_once()

    @pytest.mark.asyncio
    async def test_decrement_concurrency_prevent_negative(self):
        """测试防止并发计数变为负数"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.decr = AsyncMock(return_value=-1)
        mock_redis.set = AsyncMock()
        manager._redis_client = mock_redis

        result = await manager.decrement_concurrency()

        assert result == 0
        mock_redis.set.assert_called_once()

    @pytest.mark.asyncio
    async def test_get_global_concurrency(self):
        """测试获取全局并发数"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.get = AsyncMock(return_value="7")
        manager._redis_client = mock_redis

        result = await manager.get_global_concurrency()

        assert result == 7

    @pytest.mark.asyncio
    async def test_get_global_concurrency_empty(self):
        """测试获取空的全局并发数"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.get = AsyncMock(return_value=None)
        manager._redis_client = mock_redis

        result = await manager.get_global_concurrency()

        assert result == 0

    @pytest.mark.asyncio
    async def test_can_execute(self):
        """测试检查是否可执行"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.get = AsyncMock(return_value="5")
        manager._redis_client = mock_redis

        with patch("functional_scaffold.core.job_manager.settings") as mock_settings:
            mock_settings.max_concurrent_jobs = 10

            result = await manager.can_execute()

            assert result is True

    @pytest.mark.asyncio
    async def test_can_execute_at_limit(self):
        """测试达到并发限制时"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.get = AsyncMock(return_value="10")
        manager._redis_client = mock_redis

        with patch("functional_scaffold.core.job_manager.settings") as mock_settings:
            mock_settings.max_concurrent_jobs = 10

            result = await manager.can_execute()

            assert result is False


class TestJobRetry:
    """测试任务重试功能"""

    @pytest.mark.asyncio
    async def test_get_job_retry_count(self):
        """测试获取任务重试次数"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.hget = AsyncMock(return_value="2")
        manager._redis_client = mock_redis

        result = await manager.get_job_retry_count("test-job-id")

        assert result == 2
        mock_redis.hget.assert_called_once_with("job:test-job-id", "retry_count")

    @pytest.mark.asyncio
    async def test_get_job_retry_count_empty(self):
        """测试获取空的重试次数"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.hget = AsyncMock(return_value=None)
        manager._redis_client = mock_redis

        result = await manager.get_job_retry_count("test-job-id")

        assert result == 0

    @pytest.mark.asyncio
    async def test_increment_job_retry(self):
        """测试增加任务重试次数"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.hincrby = AsyncMock()
        mock_redis.hget = AsyncMock(return_value="3")
        manager._redis_client = mock_redis

        result = await manager.increment_job_retry("test-job-id")

        assert result == 3
        mock_redis.hincrby.assert_called_once_with("job:test-job-id", "retry_count", 1)


class TestTransferDequeue:
    """测试转移式出队功能"""

    @pytest.mark.asyncio
    async def test_dequeue_job_with_blmove(self):
        """测试使用 BLMOVE 转移式出队"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.blmove = AsyncMock(return_value="test-job-id")
        mock_redis.zadd = AsyncMock()
        manager._redis_client = mock_redis

        result = await manager.dequeue_job(timeout=5)

        assert result == "test-job-id"
        mock_redis.blmove.assert_called_once()
        mock_redis.zadd.assert_called_once()

    @pytest.mark.asyncio
    async def test_dequeue_job_timeout(self):
        """测试出队超时"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.blmove = AsyncMock(return_value=None)
        manager._redis_client = mock_redis

        result = await manager.dequeue_job(timeout=1)

        assert result is None
        mock_redis.zadd.assert_not_called()


class TestTokenBasedLock:
    """测试带 Token 的安全锁"""

    @pytest.mark.asyncio
    async def test_acquire_job_lock_returns_token(self):
        """测试获取锁返回 token"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.set = AsyncMock(return_value=True)
        manager._redis_client = mock_redis

        result = await manager.acquire_job_lock("test-job-id")

        assert result is not None
        assert len(result) == 32  # 16 字节的十六进制字符串
        mock_redis.set.assert_called_once()
        call_args = mock_redis.set.call_args
        assert call_args[0][0] == "job:lock:test-job-id"
        assert call_args[1]["nx"] is True

    @pytest.mark.asyncio
    async def test_acquire_job_lock_already_locked(self):
        """测试获取已被锁定的任务锁"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.set = AsyncMock(return_value=None)
        manager._redis_client = mock_redis

        result = await manager.acquire_job_lock("test-job-id")

        assert result is None

    @pytest.mark.asyncio
    async def test_release_job_lock_with_token(self):
        """测试使用 token 释放锁"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.eval = AsyncMock(return_value=1)
        manager._redis_client = mock_redis

        result = await manager.release_job_lock("test-job-id", "valid-token")

        assert result is True
        mock_redis.eval.assert_called_once()

    @pytest.mark.asyncio
    async def test_release_job_lock_invalid_token(self):
        """测试使用无效 token 释放锁"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.eval = AsyncMock(return_value=0)
        manager._redis_client = mock_redis

        result = await manager.release_job_lock("test-job-id", "invalid-token")

        assert result is False

    @pytest.mark.asyncio
    async def test_release_job_lock_without_token(self):
        """测试不使用 token 释放锁（向后兼容）"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.delete = AsyncMock()
        manager._redis_client = mock_redis

        result = await manager.release_job_lock("test-job-id")

        assert result is True
        mock_redis.delete.assert_called_once_with("job:lock:test-job-id")


class TestAckNack:
    """测试 ACK/NACK 机制"""

    @pytest.mark.asyncio
    async def test_ack_job(self):
        """测试确认任务完成"""
        manager = JobManager()

        mock_pipe = AsyncMock()
        mock_pipe.lrem = MagicMock()
        mock_pipe.zrem = MagicMock()
        mock_pipe.execute = AsyncMock()
        mock_pipe.__aenter__ = AsyncMock(return_value=mock_pipe)
        mock_pipe.__aexit__ = AsyncMock()

        mock_redis = AsyncMock()
        mock_redis.pipeline = MagicMock(return_value=mock_pipe)
        manager._redis_client = mock_redis

        result = await manager.ack_job("test-job-id")

        assert result is True
        mock_pipe.lrem.assert_called_once()
        mock_pipe.zrem.assert_called_once()

    @pytest.mark.asyncio
    async def test_nack_job_requeue(self):
        """测试拒绝任务并重新入队"""
        manager = JobManager()

        mock_pipe = AsyncMock()
        mock_pipe.lrem = MagicMock()
        mock_pipe.zrem = MagicMock()
        mock_pipe.lpush = MagicMock()
        mock_pipe.execute = AsyncMock()
        mock_pipe.__aenter__ = AsyncMock(return_value=mock_pipe)
        mock_pipe.__aexit__ = AsyncMock()

        mock_redis = AsyncMock()
        mock_redis.pipeline = MagicMock(return_value=mock_pipe)
        mock_redis.hget = AsyncMock(return_value="0")  # retry_count = 0
        manager._redis_client = mock_redis

        result = await manager.nack_job("test-job-id", requeue=True)

        assert result is True
        assert mock_pipe.lpush.call_count == 1

    @pytest.mark.asyncio
    async def test_nack_job_to_dlq(self):
        """测试拒绝任务进入死信队列"""
        manager = JobManager()

        mock_pipe = AsyncMock()
        mock_pipe.lrem = MagicMock()
        mock_pipe.zrem = MagicMock()
        mock_pipe.lpush = MagicMock()
        mock_pipe.execute = AsyncMock()
        mock_pipe.__aenter__ = AsyncMock(return_value=mock_pipe)
        mock_pipe.__aexit__ = AsyncMock()

        mock_redis = AsyncMock()
        mock_redis.pipeline = MagicMock(return_value=mock_pipe)
        mock_redis.hget = AsyncMock(return_value="5")  # retry_count > max_retries
        manager._redis_client = mock_redis

        with patch("functional_scaffold.core.job_manager.settings") as mock_settings:
            mock_settings.job_max_retries = 3
            mock_settings.job_processing_key = "job:processing"
            mock_settings.job_processing_ts_key = "job:processing:ts"
            mock_settings.job_dlq_key = "job:dlq"
            mock_settings.job_queue_key = "job:queue"

            result = await manager.nack_job("test-job-id", requeue=True)

        assert result is True


class TestLockRenewal:
    """测试锁续租功能"""

    @pytest.mark.asyncio
    async def test_renew_job_lock_success(self):
        """测试锁续租成功"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.eval = AsyncMock(return_value=1)
        manager._redis_client = mock_redis

        result = await manager.renew_job_lock("test-job-id", "valid-token")

        assert result is True
        mock_redis.eval.assert_called_once()

    @pytest.mark.asyncio
    async def test_renew_job_lock_invalid_token(self):
        """测试锁续租失败（token 不匹配）"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.eval = AsyncMock(return_value=0)
        manager._redis_client = mock_redis

        result = await manager.renew_job_lock("test-job-id", "invalid-token")

        assert result is False

    @pytest.mark.asyncio
    async def test_renew_job_lock_without_redis(self):
        """测试 Redis 不可用时续租"""
        manager = JobManager()

        result = await manager.renew_job_lock("test-job-id", "token")

        assert result is False


class TestStaleJobRecovery:
    """测试超时任务回收功能"""

    @pytest.mark.asyncio
    async def test_recover_stale_jobs_empty(self):
        """测试没有超时任务时的回收"""
        manager = JobManager()

        mock_redis = AsyncMock()
        mock_redis.zrangebyscore = AsyncMock(return_value=[])
        manager._redis_client = mock_redis

        result = await manager.recover_stale_jobs()

        assert result == 0

    @pytest.mark.asyncio
    async def test_recover_stale_jobs_requeue(self):
        """测试回收超时任务并重新入队"""
        manager = JobManager()

        mock_pipe = AsyncMock()
        mock_pipe.lrem = MagicMock()
        mock_pipe.zrem = MagicMock()
        mock_pipe.lpush = MagicMock()
        mock_pipe.execute = AsyncMock()
        mock_pipe.__aenter__ = AsyncMock(return_value=mock_pipe)
        mock_pipe.__aexit__ = AsyncMock()

        mock_redis = AsyncMock()
        mock_redis.zrangebyscore = AsyncMock(return_value=["stale-job-1", "stale-job-2"])
        mock_redis.hincrby = AsyncMock()
        mock_redis.hget = AsyncMock(return_value="1")  # retry_count = 1
        mock_redis.pipeline = MagicMock(return_value=mock_pipe)
        manager._redis_client = mock_redis

        with patch("functional_scaffold.core.job_manager.settings") as mock_settings:
            mock_settings.job_execution_timeout = 300
            mock_settings.job_lock_buffer = 60
            mock_settings.job_max_retries = 3
            mock_settings.job_processing_key = "job:processing"
            mock_settings.job_processing_ts_key = "job:processing:ts"
            mock_settings.job_dlq_key = "job:dlq"
            mock_settings.job_queue_key = "job:queue"

            result = await manager.recover_stale_jobs()

        assert result == 2

    @pytest.mark.asyncio
    async def test_recover_stale_jobs_to_dlq(self):
        """测试回收超时任务进入死信队列"""
        manager = JobManager()

        mock_pipe = AsyncMock()
        mock_pipe.lrem = MagicMock()
        mock_pipe.zrem = MagicMock()
        mock_pipe.lpush = MagicMock()
        mock_pipe.execute = AsyncMock()
        mock_pipe.__aenter__ = AsyncMock(return_value=mock_pipe)
        mock_pipe.__aexit__ = AsyncMock()

        mock_redis = AsyncMock()
        mock_redis.zrangebyscore = AsyncMock(return_value=["stale-job-1"])
        mock_redis.hincrby = AsyncMock()
        mock_redis.hget = AsyncMock(return_value="5")  # retry_count > max_retries
        mock_redis.pipeline = MagicMock(return_value=mock_pipe)
        manager._redis_client = mock_redis

        with patch("functional_scaffold.core.job_manager.settings") as mock_settings:
            mock_settings.job_execution_timeout = 300
            mock_settings.job_lock_buffer = 60
            mock_settings.job_max_retries = 3
            mock_settings.job_processing_key = "job:processing"
            mock_settings.job_processing_ts_key = "job:processing:ts"
            mock_settings.job_dlq_key = "job:dlq"
            mock_settings.job_queue_key = "job:queue"

            result = await manager.recover_stale_jobs()

        assert result == 1

    @pytest.mark.asyncio
    async def test_recover_stale_jobs_without_redis(self):
        """测试 Redis 不可用时回收"""
        manager = JobManager()

        result = await manager.recover_stale_jobs()

        assert result == 0


class TestQueueMetrics:
    """测试队列监控指标收集"""

    @pytest.mark.asyncio
    async def test_collect_queue_metrics(self):
        """测试收集队列指标"""
        manager = JobManager()

        mock_pipe = AsyncMock()
        mock_pipe.llen = MagicMock()
        mock_pipe.zrange = MagicMock()
        mock_pipe.execute = AsyncMock(return_value=[5, 2, 1, [("job-1", 1000.0)]])
        mock_pipe.__aenter__ = AsyncMock(return_value=mock_pipe)
        mock_pipe.__aexit__ = AsyncMock()

        mock_redis = AsyncMock()
        mock_redis.pipeline = MagicMock(return_value=mock_pipe)
        manager._redis_client = mock_redis

        with patch("functional_scaffold.core.job_manager.time") as mock_time:
            mock_time.time.return_value = 1060.0  # 60 秒后

            with patch("functional_scaffold.core.job_manager.set") as mock_set:
                result = await manager.collect_queue_metrics()

        assert result["queue_length"] == 5
        assert result["processing_length"] == 2
        assert result["dlq_length"] == 1
        assert result["oldest_waiting_seconds"] == 60.0

    @pytest.mark.asyncio
    async def test_collect_queue_metrics_empty(self):
        """测试空队列时收集指标"""
        manager = JobManager()

        mock_pipe = AsyncMock()
        mock_pipe.llen = MagicMock()
        mock_pipe.zrange = MagicMock()
        mock_pipe.execute = AsyncMock(return_value=[0, 0, 0, []])
        mock_pipe.__aenter__ = AsyncMock(return_value=mock_pipe)
        mock_pipe.__aexit__ = AsyncMock()

        mock_redis = AsyncMock()
        mock_redis.pipeline = MagicMock(return_value=mock_pipe)
        manager._redis_client = mock_redis

        with patch("functional_scaffold.core.job_manager.set"):
            result = await manager.collect_queue_metrics()

        assert result["queue_length"] == 0
        assert result["processing_length"] == 0
        assert result["dlq_length"] == 0
        assert result["oldest_waiting_seconds"] == 0

    @pytest.mark.asyncio
    async def test_collect_queue_metrics_without_redis(self):
        """测试 Redis 不可用时收集指标"""
        manager = JobManager()

        result = await manager.collect_queue_metrics()

        assert result["queue_length"] == 0
        assert result["processing_length"] == 0
        assert result["dlq_length"] == 0
        assert result["oldest_waiting_seconds"] == 0