"""회원가입, 이메일 인증 및 회사 검색 API."""

from datetime import datetime

from fastapi import APIRouter, HTTPException, Query

from common_util.common_util_auth import generate_otp, hash_password, verify_password
from common_util.common_util_auth_repository import (
    company_master_email,
    complete_registration,
    consume_otp,
    create_registration,
    get_active_otp,
    get_user_by_email,
    replace_otp,
    search_companies,
)
from common_util.common_util_email import send_email_background
from common_util.common_util_email_templates import join_request_email, otp_email

from .A07_Register_Schema import RegisterRequest, RegisterVerifyRequest

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


@router.get("/companies")
async def find_companies(q: str = Query(min_length=1, max_length=100)):
    return {"status": "success", "companies": await search_companies(q.strip())}


@router.post("/register/request", status_code=202)
async def request_registration(payload: RegisterRequest):
    email = str(payload.email).lower()
    if await get_user_by_email(email):
        raise HTTPException(status_code=409, detail="이미 등록된 이메일입니다.")
    data = payload.model_dump()
    data["email"] = email
    user_id = await create_registration(data, hash_password(payload.password))
    code = generate_otp()
    await replace_otp(user_id, "REGISTER", hash_password(code))
    subject, html = otp_email(code, "회원가입")
    send_email_background(email, subject, html)
    return {"status": "success", "message": "인증 코드를 발송했습니다."}


@router.post("/register/verify")
async def verify_registration(payload: RegisterVerifyRequest):
    user = await get_user_by_email(str(payload.email).lower())
    if not user or user["status"] != "PENDING_EMAIL":
        raise HTTPException(status_code=400, detail="인증 대기 중인 가입 요청이 없습니다.")
    otp = await get_active_otp(user["id"], "REGISTER")
    if (
        not otp
        or otp["expires_at"] < datetime.utcnow()
        or not verify_password(payload.otp_code, otp["otp_hash"])
    ):
        raise HTTPException(status_code=400, detail="인증 코드가 유효하지 않습니다.")
    await consume_otp(otp["id"])
    await complete_registration(user["id"], bool(user["is_master"]))

    if not user["is_master"]:
        master_email = await company_master_email(user["company_id"])
        if master_email:
            subject, html = join_request_email(user["name"], user["email"])
            send_email_background(master_email, subject, html)
    return {
        "status": "success",
        "account_status": "ACTIVE" if user["is_master"] else "PENDING",
    }