"""代理相关路由"""
from typing import Optional
from fastapi import APIRouter, Depends, Query
from services.proxy_service import ProxyService
from models.schemas import ProxyListRequest, BatchDeleteRequest
from api.deps import get_proxy_service

router = APIRouter(prefix="/api/proxies", tags=["proxies"])


def success_response(message: str, data=None):
    return {"code": 200, "message": message, "data": data}


def error_response(message: str, code: int = 500):
    return {"code": code, "message": message, "data": None}


@router.post("")
async def list_proxies(
    request: ProxyListRequest,
    service: ProxyService = Depends(get_proxy_service),
):
    proxies, total = await service.list_proxies(
        page=request.page,
        page_size=request.page_size,
        protocol=request.protocol,
        min_score=request.min_score,
        max_score=request.max_score,
        sort_by=request.sort_by,
        sort_order=request.sort_order,
    )
    return success_response(
        "获取代理列表成功",
        {
            "list": [
                {
                    "ip": p.ip,
                    "port": p.port,
                    "protocol": p.protocol,
                    "score": p.score,
                    "last_check": p.last_check.isoformat() if p.last_check else None,
                }
                for p in proxies
            ],
            "total": total,
            "page": request.page,
            "page_size": request.page_size,
        },
    )


@router.get("/random")
async def get_random_proxy(service: ProxyService = Depends(get_proxy_service)):
    proxy = await service.get_random_proxy()
    if not proxy:
        return error_response("没有找到可用的代理", 404)
    return success_response(
        "获取随机代理成功",
        {
            "ip": proxy.ip,
            "port": proxy.port,
            "protocol": proxy.protocol,
            "score": proxy.score,
            "last_check": proxy.last_check.isoformat() if proxy.last_check else None,
        },
    )


@router.get("/export/{fmt}")
async def export_proxies(
    fmt: str,
    protocol: Optional[str] = None,
    limit: int = Query(default=10000, ge=1, le=100000),
    service: ProxyService = Depends(get_proxy_service),
):
    if fmt not in ("csv", "txt", "json"):
        return error_response("不支持的导出格式", 400)

    from fastapi.responses import StreamingResponse

    media_types = {"csv": "text/csv", "txt": "text/plain", "json": "application/json"}

    async def generate():
        async for chunk in service.export_proxies(fmt, protocol, limit):
            yield chunk

    return StreamingResponse(
        generate(),
        media_type=media_types[fmt],
        headers={"Content-Disposition": f"attachment; filename=proxies.{fmt}"},
    )


@router.delete("/{ip}/{port}")
async def delete_proxy(ip: str, port: int, service: ProxyService = Depends(get_proxy_service)):
    await service.delete_proxy(ip, port)
    return success_response("删除代理成功")


@router.post("/batch-delete")
async def batch_delete(
    request: BatchDeleteRequest,
    service: ProxyService = Depends(get_proxy_service),
):
    proxies = [(item.ip, item.port) for item in request.proxies]
    deleted = await service.batch_delete(proxies)
    return success_response(f"批量删除 {deleted} 个代理成功", {"deleted_count": deleted})


@router.delete("/clean-invalid")
async def clean_invalid(service: ProxyService = Depends(get_proxy_service)):
    count = await service.clean_invalid()
    return success_response(f"清理了 {count} 个无效代理", {"deleted_count": count})