from datetime import datetime
from sqlalchemy.ext.asyncio import AsyncSession
from typing import List
from exceptions.exception import ServiceException
from module_admin.entity.vo.common_vo import CrudResponseModel
from module_admin.system.dao.contact_dao import ContactDao
from module_admin.system.entity.vo.contact_vo import DeleteContactModel, ContactModel, ContactPageQueryModel
from utils.common_util import CamelCaseUtil
from utils.excel_util import ExcelUtil


class ContactService:
    """
    联系人模块服务层
    """

    @classmethod
    async def get_contact_list_services(
        cls, query_db: AsyncSession, query_object: ContactPageQueryModel, is_page: bool = False
    ):
        contact_list_result = await ContactDao.get_contact_list(query_db, query_object, is_page)
        return contact_list_result

    @classmethod
    async def add_contact_services(cls, query_db: AsyncSession, page_object: ContactModel):
        # 校验同单位下姓名唯一性
        existing = await ContactDao.get_contact_by_name_company(
            query_db, page_object.name, page_object.company
        )
        if existing:
            company_info = f'（{page_object.company}）' if page_object.company else ''
            raise ServiceException(message=f'联系人"{page_object.name}"{company_info}已存在，请勿重复添加')
        try:
            await ContactDao.add_contact_dao(query_db, page_object)
            await query_db.commit()
            return CrudResponseModel(is_success=True, message='新增成功')
        except Exception as e:
            await query_db.rollback()
            raise e

    @classmethod
    async def edit_contact_services(cls, query_db: AsyncSession, page_object: ContactModel):
        edit_contact = page_object.model_dump(exclude_unset=True, exclude={})
        contact_info = await cls.contact_detail_services(query_db, page_object.id)
        if contact_info.id:
            # 校验唯一性（排除自身）
            existing = await ContactDao.get_contact_by_name_company(
                query_db, page_object.name, page_object.company, exclude_id=page_object.id
            )
            if existing:
                company_info = f'（{page_object.company}）' if page_object.company else ''
                raise ServiceException(message=f'联系人"{page_object.name}"{company_info}已存在')
            try:
                edit_contact['update_time'] = datetime.now()
                await ContactDao.edit_contact_dao(query_db, edit_contact)
                await query_db.commit()
                return CrudResponseModel(is_success=True, message='更新成功')
            except Exception as e:
                await query_db.rollback()
                raise e
        else:
            raise ServiceException(message='联系人不存在')

    @classmethod
    async def delete_contact_services(cls, query_db: AsyncSession, page_object: DeleteContactModel):
        if page_object.ids:
            id_list = page_object.ids.split(',')
            try:
                for contact_id in id_list:
                    await ContactDao.delete_contact_dao(query_db, int(contact_id))
                await query_db.commit()
                return CrudResponseModel(is_success=True, message='删除成功')
            except Exception as e:
                await query_db.rollback()
                raise e
        else:
            raise ServiceException(message='传入联系人ID为空')

    @classmethod
    async def contact_detail_services(cls, query_db: AsyncSession, id: int):
        contact = await ContactDao.get_contact_detail_by_id(query_db, id=id)
        if contact:
            result = ContactModel(**CamelCaseUtil.transform_result(contact))
        else:
            result = ContactModel(**dict())
        return result

    @staticmethod
    async def export_contact_list_services(contact_list: List):
        mapping_dict = {
            'id': '联系人ID',
            'name': '姓名',
            'company': '单位',
            'department': '部门',
            'position': '职务',
            'mobile': '手机号',
            'phone': '座机',
            'email': '邮箱',
            'address': '快递地址',
            'memo': '备注',
        }
        binary_data = ExcelUtil.export_list2excel(contact_list, mapping_dict)
        return binary_data