"""
系统模块 API
============
"""

from fastapi import APIRouter, status
from fastapi.responses import JSONResponse

from app.core.health_checker import check_database, check_redis
from app.core.runtime_config import get_runtime_config
from app.schemas.common import ApiResponse, success_response

router = APIRouter()


@router.get("/health", response_model=ApiResponse[dict])
async def system_health():
    """系统健康检查（详细版）"""
    db_ok, db_msg = await check_database()
    redis_ok, redis_msg = await check_redis()

    services = {
        "api": "up",
        "database": "connected" if db_ok else db_msg,
        "redis": "connected" if redis_ok else redis_msg,
    }

    if not db_ok:
        return JSONResponse(
            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
            content={
                "code": status.HTTP_503_SERVICE_UNAVAILABLE,
                "message": "数据库连接异常",
                "data": {"status": "unhealthy", "services": services},
            },
        )

    if not redis_ok:
        return success_response(
            message="Redis 连接异常，服务降级",
            data={"status": "degraded", "services": services},
        )

    return success_response(
        message="系统运行正常",
        data={"status": "healthy", "services": services},
    )


@router.get("/version", response_model=ApiResponse[dict])
async def system_version():
    """获取系统版本信息"""
    from app.config import get_settings

    settings = get_settings()

    return success_response(
        data={
            "name": settings.APP_NAME,
            "version": settings.APP_VERSION,
            "environment": settings.ENV,
        },
        message="获取版本成功",
    )


# ═══════════════════════════════════════════════════════════════
# 运行时配置管理（Admin）
# ═══════════════════════════════════════════════════════════════


@router.get("/admin/runtime-config", response_model=ApiResponse[dict])
async def get_runtime_config_api():
    """获取当前运行时配置"""
    runtime = get_runtime_config()
    return success_response(
        data={
            "config": runtime.get_raw(),
            "version": runtime.version,
            "config_path": str(runtime.config_path),
        },
        message="获取运行时配置成功",
    )


@router.post("/admin/runtime-config/reload", response_model=ApiResponse[dict])
async def reload_runtime_config_api():
    """手动触发运行时配置重载"""
    runtime = get_runtime_config()
    success = await runtime.force_reload()
    return success_response(
        data={
            "reloaded": success,
            "version": runtime.version,
        },
        message="配置重载成功" if success else "配置重载失败",
    )