from fastapi import APIRouter, Query, UploadFile, File, HTTPException
from typing import Optional

from app.schemas.base import Success, SuccessExtra, PageResponse, BasicResponse
from app.schemas.invoice import PaymentReceiptOut
from app.controllers.invoice import invoice_controller
from app.models.invoice import PaymentReceipt
from fastapi import Body
from app.schemas.transactions import SendEmailRequest, SendEmailResponse
from app.services.email_client import email_client
from app.models.invoice import EmailSendLog
from app.settings.config import settings
from app.log.log import logger
import httpx


transactions_router = APIRouter(tags=["交易管理"])


@transactions_router.get("/receipts", summary="对公转账记录列表", response_model=PageResponse[PaymentReceiptOut])
async def list_receipts(
    phone: Optional[str] = Query(None),
    wechat: Optional[str] = Query(None),
    company_name: Optional[str] = Query(None),
    tax_number: Optional[str] = Query(None),
    status: Optional[str] = Query(None),
    ticket_type: Optional[str] = Query(None),
    invoice_type: Optional[str] = Query(None),
    created_at: Optional[list[int]] = Query(None),
    submitted_start: Optional[str] = Query(None),
    submitted_end: Optional[str] = Query(None),
    page: int = Query(1, ge=1),
    page_size: int = Query(10, ge=1, le=100),
):
    """
    对公转账记录列表（含提交时间、凭证与关联企业信息）
    """
    result = await invoice_controller.list_receipts(
        page=page,
        page_size=page_size,
        phone=phone,
        wechat=wechat,
        company_name=company_name,
        tax_number=tax_number,
        status=status,
        ticket_type=ticket_type,
        invoice_type=invoice_type,
        created_at=created_at,
        submitted_start=submitted_start,
        submitted_end=submitted_end,
    )
    return SuccessExtra(
        data=result["items"],
        total=result["total"],
        page=result["page"],
        page_size=result["page_size"],
        msg="获取成功",
    )


@transactions_router.get("/receipts/{id}", summary="对公转账记录详情", response_model=BasicResponse[PaymentReceiptOut])
async def get_receipt_detail(id: int):
    """
    对公转账记录详情
    """
    data = await invoice_controller.get_receipt_by_id(id)
    return Success(data=data or {}, msg="获取成功" if data else "未找到")



    
@transactions_router.post("/send-email", summary="发送邮件", response_model=BasicResponse[SendEmailResponse])
async def send_email(payload: SendEmailRequest = Body(...)):

    attachments = []
    urls = []
    try:
        domain = payload.email.split("@")[-1]
        import dns.resolver
        try:
            dns.resolver.resolve(domain, "MX")
        except Exception:
            dns.resolver.resolve(domain, "A")
    except Exception:
        raise HTTPException(status_code=400, detail="收件方地址域名不可用或未正确解析")
    if payload.file_urls:
        urls.extend([u.strip().strip('`') for u in payload.file_urls if isinstance(u, str)])
    if urls:
        try:
            async with httpx.AsyncClient(timeout=10) as client:
                for u in urls:
                    r = await client.get(u)
                    r.raise_for_status()
                    attachments.append((r.content, u.split("/")[-1]))   
        except Exception as e:
            raise HTTPException(status_code=400, detail=f"附件下载失败: {e}")

    logger.info("transactions.email_send_start email={} subject={}", payload.email, payload.subject or "")
    try:
        result = email_client.send_many(payload.email, payload.subject, payload.body, attachments)
    except RuntimeError as e:
        result = {"status": "FAIL", "error": str(e)}
    except Exception as e:
        result = {"status": "FAIL", "error": str(e)}

    body_summary = payload.body[:500]
    status = result.get("status")
    error = result.get("error")
    first_name = attachments[0][1] if attachments else None
    first_url = urls[0] if urls else None
    log = await EmailSendLog.create(
        email=payload.email,
        subject=payload.subject,    
        body_summary=body_summary,
        file_name=first_name,
        file_url=first_url,
        status=status,
        error=error,
    )
    if status == "OK":
        logger.info("transactions.email_send_ok email={}", payload.email)
    else:
        logger.error("transactions.email_send_fail email={} err={}", payload.email, error)

    if status == "OK" and payload.receipt_id:
        try:
            r = await PaymentReceipt.filter(id=payload.receipt_id).first()
            if r:
                r.extra = (r.extra or {}) | payload.model_dump()
                await r.save()
        except Exception as e:
            logger.error("transactions.email_extra_save_fail id={} err={}", payload.receipt_id, str(e))

    return Success(data={"status": status, "log_id": log.id, "error": error}, msg="发送成功" if status == "OK" else "发送失败")


@transactions_router.get("/smtp-config", summary="SMTP配置状态", response_model=BasicResponse[dict])
async def smtp_config_status():
    configured = all([
        settings.SMTP_HOST,
        settings.SMTP_PORT,
        settings.SMTP_FROM,
        settings.SMTP_USERNAME,
        settings.SMTP_PASSWORD,
    ])
    data = {
        "host": bool(settings.SMTP_HOST),
        "port": bool(settings.SMTP_PORT),
        "from": bool(settings.SMTP_FROM),
        "username": bool(settings.SMTP_USERNAME),
        "password": bool(settings.SMTP_PASSWORD),
        "tls": settings.SMTP_TLS,
        "configured": configured,
    }
    return Success(data=data, msg="OK")