import pytest
import asyncio
import threading
import sys
sys.path.insert(0, '/Users/Chiguyong/Code/Fischer/geo/backend')

from datetime import datetime, timezone


# 模块级别事件循环，用于在测试运行时保持调度器活跃
_loop = None
_loop_thread = None


def start_scheduler_in_background():
    """在后台线程中启动调度器的事件循环"""
    from app.workers.scheduler import query_scheduler

    global _loop, _loop_thread

    if query_scheduler.scheduler.running:
        return

    def run_loop():
        global _loop
        _loop = asyncio.new_event_loop()
        asyncio.set_event_loop(_loop)
        _loop.run_until_complete(start_scheduler_async())

    async def start_scheduler_async():
        from app.workers.scheduler import query_scheduler
        query_scheduler.start()

    _loop_thread = threading.Thread(target=run_loop, daemon=True)
    _loop_thread.start()
    _loop_thread.join(timeout=2)  # 等待启动


@pytest.fixture(scope="module", autouse=True)
def scheduler_running():
    """启动调度器"""
    start_scheduler_in_background()
    yield


class TestScheduler:
    """定时调度器测试"""

    def test_scheduler_job_registered(self):
        """调度器应注册所需任务"""
        from app.workers.scheduler import query_scheduler

        # 获取所有注册的任务
        jobs = query_scheduler.scheduler.get_jobs()
        job_ids = [job.id for job in jobs]

        # 应包含检查查询任务
        assert "check_queries" in job_ids
        # 应包含检查pending任务
        assert "check_pending_tasks" in job_ids

    def test_job_can_be_triggered_manually(self):
        """任务应支持手动触发"""
        from app.workers.scheduler import run_job_now, query_scheduler

        # 验证任务可以被获取
        job = query_scheduler.scheduler.get_job("check_queries")
        assert job is not None
        assert callable(job.func)

        # 验证run_job_now返回True表示成功
        result = run_job_now("check_queries")
        assert result is True

    def test_run_job_now_returns_false_for_unknown_job(self):
        """不存在的任务应返回False"""
        from app.workers.scheduler import run_job_now

        result = run_job_now("nonexistent_job")
        assert result is False

    def test_job_id_is_unique(self):
        """任务ID应唯一"""
        from app.workers.scheduler import query_scheduler

        jobs = query_scheduler.scheduler.get_jobs()
        job_ids = [job.id for job in jobs]
        assert len(job_ids) == len(set(job_ids))

    def test_job_next_run_time_is_valid(self):
        """任务的下次运行时间应有效"""
        from app.workers.scheduler import query_scheduler

        jobs = query_scheduler.scheduler.get_jobs()
        now = datetime.now(timezone.utc)
        for job in jobs:
            assert job.next_run_time is not None
            # 应该是未来时间
            job_time = job.next_run_time
            if job_time.tzinfo is None:
                job_time = job_time.replace(tzinfo=timezone.utc)
            assert job_time > now

    def test_job_stores_metadata(self):
        """任务应存储元数据"""
        from app.workers.scheduler import query_scheduler

        jobs = query_scheduler.scheduler.get_jobs()
        for job in jobs:
            # 任务应有ID和名称
            assert hasattr(job, 'id')
            assert hasattr(job, 'name')
            assert job.id is not None
            assert job.name is not None

    def test_scheduler_has_two_jobs(self):
        """调度器应有两个注册的任务"""
        from app.workers.scheduler import query_scheduler

        jobs = query_scheduler.scheduler.get_jobs()
        assert len(jobs) == 2

    def test_check_queries_job_config(self):
        """检查check_queries任务配置"""
        from app.workers.scheduler import query_scheduler

        job = query_scheduler.scheduler.get_job("check_queries")
        assert job is not None
        assert job.name == "检查并执行到期的查询任务"

    def test_check_pending_tasks_job_config(self):
        """检查check_pending_tasks任务配置"""
        from app.workers.scheduler import query_scheduler

        job = query_scheduler.scheduler.get_job("check_pending_tasks")
        assert job is not None
        assert job.name == "检查并执行遗留的pending查询任务"

    def test_scheduler_instance_is_singleton(self):
        """query_scheduler应是单例"""
        from app.workers.scheduler import query_scheduler, query_scheduler as qs2
        assert query_scheduler is qs2