import uuid
from datetime import timedelta

from fastapi import Depends

from common.database.db_session_manager import DB_SESSION_MNG
from common.database.model.models import companies
from common.enums import DBWRType, ErrorType
from common.utils.gtime import GTime
from config.server_configs import web_server_config
from crud.user_crud import IUserCRUD, UserCRUD
from router.v1.company.protocol import (
    Req_PreviewInviteEmail,
    Req_UpdateCompanySettings,
    Res_CompanySettings,
    Res_PreviewInviteEmail,
)
from services.email import build_invite_email


class CompanySettingsService:
    """회사별 커스터마이징 설정(companies.settings JSONB) 조회/수정.

    - 조회는 로그인 유저 전원(브랜딩/라벨을 앱 부팅 시 로드), 수정은 라우터에서 RequireOwner 로 게이트.
    - company_id 는 토큰값만 쓴다 → 남의 회사 설정 접근 불가.
    """

    def __init__(self, user_crud: IUserCRUD = Depends(UserCRUD)):
        self.user_crud = user_crud

    async def get_settings(self, company_id: str) -> Res_CompanySettings:
        res = Res_CompanySettings()
        err_type, company = await DB_SESSION_MNG.execute_lambda(
            companies.DBType(),
            DBWRType.DB_READ.value,
            lambda s: self.user_crud.get_company(s, uuid.UUID(company_id)),
        )
        if err_type != ErrorType.SUCCESS or company is None:
            res.result.SetResult(err_type if err_type != ErrorType.SUCCESS else ErrorType.ACCOUNT_NOT_FOUND)
            return res
        res.settings = company.settings
        return res

    async def update_settings(self, company_id: str, req: Req_UpdateCompanySettings) -> Res_CompanySettings:
        res = Res_CompanySettings()
        err_type = await DB_SESSION_MNG.execute_lambda_run(
            [companies.DBType()],
            [lambda s: self.user_crud.update_company_settings(s, uuid.UUID(company_id), req.settings)],
        )
        if err_type != ErrorType.SUCCESS:
            res.result.SetResult(err_type)
            return res
        res.settings = req.settings
        return res

    async def preview_invite_email(self, company_id: str, req: Req_PreviewInviteEmail) -> Res_PreviewInviteEmail:
        """저장 전 branding 편집값을 샘플 견적 데이터로 렌더한다(발송 없음).
        실제 발송(services/quotation/invites.py)과 같은 build_invite_email 을 타므로 미리보기=실물.
        회사명은 헤더 기본값이라 실발송과 동일하게 채워 보여준다."""
        res = Res_PreviewInviteEmail()
        _, company = await DB_SESSION_MNG.execute_lambda(
            companies.DBType(),
            DBWRType.DB_READ.value,
            lambda s: self.user_crud.get_company(s, uuid.UUID(company_id)),
        )
        base = (web_server_config.nego_chat_url or "").rstrip("/")
        res.subject, res.html, _ = build_invite_email(
            supplier_name="샘플 협력사",
            quotation_name="복사용지 A4 80g 외 2건",
            qt_number="EST-2026-0801",
            end_time=GTime.UTC() + timedelta(days=3),
            chat_url=f"{base}/chat?session_id=00000000-0000-0000-0000-000000000000",
            company_name=(company.name if company else "") or "",
            branding=req.branding,
        )
        return res