import os
import tempfile
from datetime import datetime, timedelta

from fastapi import UploadFile

from app.api.v1.module_system.auth.schema import AuthSchema
from app.config.setting import settings
from app.core.alipay import AlipayClient
from app.core.exceptions import CustomException
from app.core.logger import log
from app.utils.upload_util import UploadUtil

from .crud import FacetofaceCRUD
from .enums import FacetofaceOrderStatus
from .schema import (
    FacetofaceApplySchema,
    FacetofaceOrderListOutSchema,
    FacetofaceOrderOutSchema,
)


class FacetofaceService:
    """当面付开通服务"""

    @classmethod
    async def apply_service(
        cls,
        auth: AuthSchema,
        data: FacetofaceApplySchema,
        shop_scene_pic: UploadFile | None = None,
        shop_sign_board_pic: UploadFile | None = None,
        business_license_pic: UploadFile | None = None,
    ) -> FacetofaceOrderOutSchema:
        """
        提交当面付开通申请

        三步操作: agent.create → facetoface.sign → agent.confirm
        """
        from alipay.aop.api.FileItem import FileItem
        from alipay.aop.api.domain.AlipayOpenAgentCreateModel import AlipayOpenAgentCreateModel
        from alipay.aop.api.request.AlipayOpenAgentCreateRequest import AlipayOpenAgentCreateRequest
        from alipay.aop.api.response.AlipayOpenAgentCreateResponse import AlipayOpenAgentCreateResponse
        from alipay.aop.api.request.AlipayOpenAgentFacetofaceSignRequest import AlipayOpenAgentFacetofaceSignRequest
        from alipay.aop.api.response.AlipayOpenAgentFacetofaceSignResponse import AlipayOpenAgentFacetofaceSignResponse
        from alipay.aop.api.domain.AlipayOpenAgentConfirmModel import AlipayOpenAgentConfirmModel
        from alipay.aop.api.request.AlipayOpenAgentConfirmRequest import AlipayOpenAgentConfirmRequest
        from alipay.aop.api.response.AlipayOpenAgentConfirmResponse import AlipayOpenAgentConfirmResponse

        client = AlipayClient.get_client()
        crud = FacetofaceCRUD(auth)

        # 检查该企业是否已有申请单
        existing = await crud.get_by_enterprise_id(data.enterprise_id)
        if existing and existing.order_status not in (
            FacetofaceOrderStatus.CLOSED.value,
        ):
            raise CustomException(msg="该企业已有进行中的当面付申请")

        # Step 1: 创建应用事务，获取 batch_no
        create_model = AlipayOpenAgentCreateModel()
        create_request = AlipayOpenAgentCreateRequest()
        create_request.biz_model = create_model

        response = client.execute(create_request)
        if not response:
            raise CustomException(msg="创建应用事务失败: 无响应")

        create_result = AlipayOpenAgentCreateResponse()
        create_result.parse_response_content(response)
        if not create_result.is_success():
            log.error(f"创建应用事务失败: {create_result.code} - {create_result.msg} - {create_result.sub_msg}")
            raise CustomException(msg=f"创建应用事务失败: {create_result.sub_msg or create_result.msg}")

        batch_no = create_result.batch_no
        if not batch_no:
            raise CustomException(msg="创建应用事务失败: 未返回 batch_no")

        log.info(f"当面付申请 - Step1 创建事务成功: batch_no={batch_no}")

        # Step 2: 提交当面付开通申请
        sign_request = AlipayOpenAgentFacetofaceSignRequest()
        sign_request.batch_no = batch_no
        sign_request.shop_name = data.shop_name
        if data.shop_address:
            sign_request.shop_address = data.shop_address
        if data.mcc_code:
            sign_request.mcc_code = data.mcc_code
        if data.rate:
            sign_request.rate = data.rate
        if data.business_license_no:
            sign_request.business_license_no = data.business_license_no
        if data.business_license_mobile:
            sign_request.business_license_mobile = data.business_license_mobile
        if data.sign_and_auth:
            sign_request.sign_and_auth = "true"

        # 处理图片上传
        image_paths: dict[str, str | None] = {
            "shop_scene_pic_path": None,
            "shop_sign_board_pic_path": None,
            "business_license_pic_path": None,
        }
        file_mapping = [
            ("shop_scene_pic", shop_scene_pic, "shop_scene_pic_path"),
            ("shop_sign_board_pic", shop_sign_board_pic, "shop_sign_board_pic_path"),
            ("business_license_pic", business_license_pic, "business_license_pic_path"),
        ]
        for attr_name, upload_file, path_key in file_mapping:
            if upload_file and upload_file.filename:
                content = await upload_file.read()
                await upload_file.seek(0)
                file_item = FileItem(
                    file_name=upload_file.filename,
                    file_content=content,
                    mime_type=upload_file.content_type or "application/octet-stream",
                )
                sign_request.__setattr__(attr_name, file_item)
                saved_path = await cls._save_uploaded_file(upload_file)
                image_paths[path_key] = saved_path

        response = client.execute(sign_request)
        if not response:
            raise CustomException(msg="提交当面付申请失败: 无响应")

        sign_result = AlipayOpenAgentFacetofaceSignResponse()
        sign_result.parse_response_content(response)
        if not sign_result.is_success():
            log.error(f"提交当面付申请失败: {sign_result.code} - {sign_result.msg} - {sign_result.sub_msg}")
            raise CustomException(msg=f"提交当面付申请失败: {sign_result.sub_msg or sign_result.msg}")

        log.info(f"当面付申请 - Step2 提交签约成功: batch_no={batch_no}")

        # Step 3: 确认提交事务
        confirm_model = AlipayOpenAgentConfirmModel()
        confirm_model.batch_no = batch_no
        confirm_request = AlipayOpenAgentConfirmRequest()
        confirm_request.biz_model = confirm_model

        response = client.execute(confirm_request)
        if not response:
            raise CustomException(msg="确认提交事务失败: 无响应")

        confirm_result = AlipayOpenAgentConfirmResponse()
        confirm_result.parse_response_content(response)
        if not confirm_result.is_success():
            log.error(f"确认提交事务失败: {confirm_result.code} - {confirm_result.msg} - {confirm_result.sub_msg}")
            raise CustomException(msg=f"确认提交事务失败: {confirm_result.sub_msg or confirm_result.msg}")

        log.info(f"当面付申请 - Step3 确认事务成功: batch_no={batch_no}")

        # 保存申请单到数据库
        now = datetime.now()
        create_data = {
            "enterprise_id": data.enterprise_id,
            "batch_no": batch_no,
            "order_status": FacetofaceOrderStatus.SUBMITTED.value,
            "shop_scene_pic_path": image_paths["shop_scene_pic_path"],
            "shop_sign_board_pic_path": image_paths["shop_sign_board_pic_path"],
            "business_license_pic_path": image_paths["business_license_pic_path"],
            "merchant_name": data.merchant_name,
            "shop_name": data.shop_name,
            "shop_address": data.shop_address,
            "mcc_code": data.mcc_code,
            "rate": data.rate,
            "business_license_no": data.business_license_no,
            "business_license_mobile": data.business_license_mobile,
            "sign_and_auth": data.sign_and_auth,
            "remark": data.remark,
            "next_query_time": now + timedelta(minutes=5),
            "query_count": 0,
        }

        # 如果该企业已有已关闭的申请单，更新而非新建
        if existing:
            obj = await crud.get(id=existing.id, preload=[])
            if obj:
                for key, value in create_data.items():
                    if hasattr(obj, key):
                        setattr(obj, key, value)
                await auth.db.flush()
                await auth.db.refresh(obj)
                return FacetofaceOrderOutSchema.model_validate(obj)

        order = await crud.create(create_data)
        if not order:
            raise CustomException(msg="保存申请单失败")

        return FacetofaceOrderOutSchema.model_validate(order)

    @classmethod
    async def query_order_service(
        cls, auth: AuthSchema, order_id: int
    ) -> FacetofaceOrderOutSchema:
        """手动查询单个申请单状态"""
        crud = FacetofaceCRUD(auth)
        order = await crud.get(id=order_id)
        if not order:
            raise CustomException(msg="申请单不存在")

        if not order.batch_no:
            raise CustomException(msg="申请单无事务编号，无法查询")

        terminal_statuses = [
            FacetofaceOrderStatus.SUCCESS.value,
            FacetofaceOrderStatus.CLOSED.value,
        ]
        if order.order_status in terminal_statuses:
            return FacetofaceOrderOutSchema.model_validate(order)

        await cls._query_and_update_order(crud, order)
        await auth.db.refresh(order)
        return FacetofaceOrderOutSchema.model_validate(order)

    @classmethod
    async def _query_and_update_order(cls, crud: FacetofaceCRUD, order) -> None:
        """查询支付宝接口并更新申请单状态"""
        from alipay.aop.api.domain.AlipayOpenAgentOrderQueryModel import AlipayOpenAgentOrderQueryModel
        from alipay.aop.api.request.AlipayOpenAgentOrderQueryRequest import AlipayOpenAgentOrderQueryRequest
        from alipay.aop.api.response.AlipayOpenAgentOrderQueryResponse import AlipayOpenAgentOrderQueryResponse

        client = AlipayClient.get_client()

        query_model = AlipayOpenAgentOrderQueryModel()
        query_model.batch_no = order.batch_no

        query_request = AlipayOpenAgentOrderQueryRequest()
        query_request.biz_model = query_model

        try:
            response = client.execute(query_request)
        except Exception as e:
            log.error(f"查询当面付申请单状态异常: batch_no={order.batch_no}, error={e}")
            return

        if not response:
            log.warning(f"查询当面付申请单无响应: batch_no={order.batch_no}")
            return

        result = AlipayOpenAgentOrderQueryResponse()
        result.parse_response_content(response)

        if not result.is_success():
            log.error(f"查询当面付申请单失败: batch_no={order.batch_no}, {result.code} - {result.sub_msg or result.msg}")
            return

        now = datetime.now()
        update_data: dict = {
            "last_query_time": now,
            "query_count": order.query_count + 1,
        }

        if result.order_no:
            update_data["order_no"] = result.order_no
        if result.confirm_url:
            update_data["confirm_url"] = result.confirm_url
        if result.reject_reason:
            update_data["reject_reason"] = result.reject_reason

        alipay_status = result.order_status
        if alipay_status:
            if alipay_status == "MERCHANT_CONFIRM":
                update_data["order_status"] = FacetofaceOrderStatus.MERCHANT_CONFIRM.value
                # 等待商家确认，继续轮询
                update_data["next_query_time"] = now + timedelta(hours=4)
            elif alipay_status == "MERCHANT_AUDITING":
                update_data["order_status"] = FacetofaceOrderStatus.MERCHANT_AUDITING.value
                update_data["next_query_time"] = now + timedelta(hours=4)
            elif alipay_status in ("MERCHANT_AGREED", "AGENT_BINDAPP_SUCCESS"):
                update_data["order_status"] = FacetofaceOrderStatus.SUCCESS.value
                update_data["next_query_time"] = None
            elif alipay_status in ("MERCHANT_REJECTED", "MERCHANT_CANCELLED", "AUDIT_REJECTED", "AUDIT_FAILED"):
                update_data["order_status"] = FacetofaceOrderStatus.CLOSED.value
                update_data["next_query_time"] = None
            else:
                update_data["next_query_time"] = now + timedelta(hours=4)

        log.info(f"当面付申请单状态更新: batch_no={order.batch_no}, alipay_status={alipay_status}, local_status={update_data.get('order_status', order.order_status)}")

        obj = await crud.get(id=order.id, preload=[])
        if obj:
            for key, value in update_data.items():
                if hasattr(obj, key):
                    setattr(obj, key, value)
            await crud.auth.db.flush()

    @classmethod
    async def batch_status_service(
        cls, auth: AuthSchema, enterprise_ids: list[str]
    ) -> dict[str, str | None]:
        """批量查询企业当面付状态"""
        crud = FacetofaceCRUD(auth)
        result: dict[str, str | None] = {}
        for eid in enterprise_ids:
            order = await crud.get_by_enterprise_id(eid)
            result[eid] = order.order_status if order else None
        return result

    @classmethod
    async def get_by_enterprise_service(
        cls, auth: AuthSchema, enterprise_id: str
    ) -> FacetofaceOrderOutSchema | None:
        """按企业ID查询当面付申请单"""
        crud = FacetofaceCRUD(auth)
        order = await crud.get_by_enterprise_id(enterprise_id)
        if not order:
            return None
        return FacetofaceOrderOutSchema.model_validate(order)

    @classmethod
    async def list_service(
        cls,
        auth: AuthSchema,
        page_no: int = 1,
        page_size: int = 20,
        search: dict | None = None,
    ) -> dict:
        """查询申请单列表"""
        crud = FacetofaceCRUD(auth)
        offset = (page_no - 1) * page_size
        return await crud.page(
            offset=offset,
            limit=page_size,
            order_by=[{"id": "desc"}],
            search=search or {},
            out_schema=FacetofaceOrderListOutSchema,
        )

    @classmethod
    async def detail_service(
        cls, auth: AuthSchema, order_id: int
    ) -> FacetofaceOrderOutSchema:
        """查询申请单详情"""
        crud = FacetofaceCRUD(auth)
        order = await crud.get(id=order_id)
        if not order:
            raise CustomException(msg="申请单不存在")
        return FacetofaceOrderOutSchema.model_validate(order)

    @classmethod
    async def _save_uploaded_file(cls, upload_file: UploadFile) -> str:
        """保存上传的文件到本地，返回文件路径"""
        await upload_file.seek(0)
        content = await upload_file.read()
        await upload_file.seek(0)

        ext = os.path.splitext(upload_file.filename or "file")[1] or ".jpg"
        safe_name = f"f2f_{datetime.now().strftime('%Y%m%d%H%M%S')}_{os.urandom(4).hex()}{ext}"

        upload_dir = settings.UPLOAD_FILE_PATH.joinpath("facetoface", datetime.now().strftime("%Y/%m/%d"))
        upload_dir.mkdir(parents=True, exist_ok=True)
        filepath = upload_dir.joinpath(safe_name)

        with open(filepath, "wb") as f:
            f.write(content)

        log.info(f"当面付图片已保存: {filepath}")
        return str(filepath)

    @classmethod
    async def poll_pending_orders(cls) -> int:
        """
        轮询待处理的申请单（供定时任务调用）

        返回本次处理的申请单数量
        """
        from app.core.database import async_db_session

        async with async_db_session() as db:
            from app.api.v1.module_system.auth.schema import AuthSchema
            auth = AuthSchema(db=db, user=None, tenant_id=1)
            crud = FacetofaceCRUD(auth)

            orders = await crud.get_pending_orders()
            if not orders:
                return 0

            count = 0
            for order in orders:
                try:
                    await cls._query_and_update_order(crud, order)
                    count += 1
                except Exception as e:
                    log.error(f"轮询当面付申请单异常: batch_no={order.batch_no}, error={e}")

            await db.commit()
            log.info(f"当面付申请单轮询完成: 处理 {count}/{len(orders)} 条")
            return count