"""监控模块测试"""

from __future__ import annotations

import pytest

from minenasai.core.monitoring import (
    ComponentHealth,
    HealthChecker,
    HealthStatus,
    SystemMetrics,
    get_health_checker,
    get_metrics,
)


class TestHealthStatus:
    """HealthStatus 测试"""

    def test_health_status_values(self):
        """测试健康状态值"""
        assert HealthStatus.HEALTHY.value == "healthy"
        assert HealthStatus.DEGRADED.value == "degraded"
        assert HealthStatus.UNHEALTHY.value == "unhealthy"


class TestSystemMetrics:
    """SystemMetrics 测试"""

    def test_initial_metrics(self):
        """测试初始指标"""
        metrics = SystemMetrics()

        assert metrics.total_requests == 0
        assert metrics.successful_requests == 0
        assert metrics.failed_requests == 0
        assert metrics.active_connections == 0

    def test_record_request(self):
        """测试记录请求"""
        metrics = SystemMetrics()

        metrics.record_request(100.0, success=True)
        metrics.record_request(200.0, success=True)
        metrics.record_request(50.0, success=False)

        assert metrics.total_requests == 3
        assert metrics.successful_requests == 2
        assert metrics.failed_requests == 1
        assert metrics.min_response_time_ms == 50.0
        assert metrics.max_response_time_ms == 200.0

    def test_avg_response_time(self):
        """测试平均响应时间"""
        metrics = SystemMetrics()

        metrics.record_request(100.0, success=True)
        metrics.record_request(200.0, success=True)

        assert metrics.avg_response_time_ms == 150.0

    def test_success_rate(self):
        """测试成功率"""
        metrics = SystemMetrics()

        metrics.record_request(100.0, success=True)
        metrics.record_request(100.0, success=True)
        metrics.record_request(100.0, success=False)

        assert metrics.success_rate == pytest.approx(2 / 3)

    def test_record_error(self):
        """测试记录错误"""
        metrics = SystemMetrics()

        metrics.record_error("ValueError")
        metrics.record_error("ValueError")
        metrics.record_error("TypeError")

        assert metrics.errors_by_type["ValueError"] == 2
        assert metrics.errors_by_type["TypeError"] == 1

    def test_to_dict(self):
        """测试转换为字典"""
        metrics = SystemMetrics()
        metrics.record_request(100.0, success=True)

        result = metrics.to_dict()

        assert "requests" in result
        assert "response_time_ms" in result
        assert "connections" in result
        assert "uptime_seconds" in result


class TestComponentHealth:
    """ComponentHealth 测试"""

    def test_component_health(self):
        """测试组件健康状态"""
        health = ComponentHealth(
            name="test",
            status=HealthStatus.HEALTHY,
            message="OK",
            latency_ms=10.0,
        )

        assert health.name == "test"
        assert health.status == HealthStatus.HEALTHY
        assert health.message == "OK"
        assert health.latency_ms == 10.0


class TestHealthChecker:
    """HealthChecker 测试"""

    def setup_method(self):
        """初始化"""
        self.checker = HealthChecker()

    @pytest.mark.asyncio
    async def test_register_and_check(self):
        """测试注册和检查"""

        async def check_ok() -> ComponentHealth:
            return ComponentHealth(
                name="test",
                status=HealthStatus.HEALTHY,
                message="OK",
            )

        self.checker.register("test", check_ok)
        result = await self.checker.check_component("test")

        assert result.status == HealthStatus.HEALTHY
        assert result.latency_ms > 0

    @pytest.mark.asyncio
    async def test_check_unknown_component(self):
        """测试检查未知组件"""
        result = await self.checker.check_component("unknown")

        assert result.status == HealthStatus.UNHEALTHY
        assert "未知组件" in result.message

    @pytest.mark.asyncio
    async def test_check_all(self):
        """测试检查所有组件"""

        async def check_a() -> ComponentHealth:
            return ComponentHealth(name="a", status=HealthStatus.HEALTHY)

        async def check_b() -> ComponentHealth:
            return ComponentHealth(name="b", status=HealthStatus.HEALTHY)

        self.checker.register("a", check_a)
        self.checker.register("b", check_b)

        results = await self.checker.check_all()

        assert len(results) == 2
        assert "a" in results
        assert "b" in results

    @pytest.mark.asyncio
    async def test_overall_status_healthy(self):
        """测试总体状态 - 健康"""

        async def check_ok() -> ComponentHealth:
            return ComponentHealth(name="test", status=HealthStatus.HEALTHY)

        self.checker.register("test", check_ok)
        await self.checker.check_all()

        assert self.checker.get_overall_status() == HealthStatus.HEALTHY

    @pytest.mark.asyncio
    async def test_overall_status_degraded(self):
        """测试总体状态 - 降级"""

        async def check_degraded() -> ComponentHealth:
            return ComponentHealth(name="test", status=HealthStatus.DEGRADED)

        self.checker.register("test", check_degraded)
        await self.checker.check_all()

        assert self.checker.get_overall_status() == HealthStatus.DEGRADED

    @pytest.mark.asyncio
    async def test_overall_status_unhealthy(self):
        """测试总体状态 - 不健康"""

        async def check_unhealthy() -> ComponentHealth:
            return ComponentHealth(name="test", status=HealthStatus.UNHEALTHY)

        self.checker.register("test", check_unhealthy)
        await self.checker.check_all()

        assert self.checker.get_overall_status() == HealthStatus.UNHEALTHY

    @pytest.mark.asyncio
    async def test_check_timeout(self):
        """测试检查超时"""
        import asyncio

        async def slow_check() -> ComponentHealth:
            await asyncio.sleep(10)  # 超过5秒超时
            return ComponentHealth(name="slow", status=HealthStatus.HEALTHY)

        self.checker.register("slow", slow_check)
        result = await self.checker.check_component("slow")

        assert result.status == HealthStatus.UNHEALTHY
        assert "超时" in result.message


class TestGlobalInstances:
    """全局实例测试"""

    def test_get_metrics(self):
        """测试获取全局指标"""
        metrics = get_metrics()
        assert isinstance(metrics, SystemMetrics)

    def test_get_health_checker(self):
        """测试获取健康检查器"""
        checker = get_health_checker()
        assert isinstance(checker, HealthChecker)