"""B02_ProjRegister FastAPI 라우터."""

from typing import Any

from fastapi import APIRouter, Depends, HTTPException, Request

from B01_Dashboard.B01_Dashboard_Repository_Members import check_project_refs
from common_util.common_util_auth import require_company

from .B02_ProjRegister_Repository import create_project
from .B02_ProjRegister_Schema import CreateProjectRequest, CreateProjectResponse

router = APIRouter(prefix="/api/b02", tags=["B02_ProjRegister"])


@router.post("/project", response_model=CreateProjectResponse)
async def post_project(
    request: Request,
    payload: CreateProjectRequest,
    session: dict[str, Any] = Depends(require_company),
) -> CreateProjectResponse:
    """신규 프로젝트를 생성한다."""

    company_id = session.get("company_id")
    if company_id is None:
        raise HTTPException(status_code=403, detail="회사 연결이 필요합니다.")

    title_block = payload.model_dump(
        include={
            "client_org",
            "project_number",
            "work_amount",
            "design_date",
            "pm_user_id",
            "field_lead_user_id",
            "designer_user_id",
            "logo_asset_id",
            "route_start_m",
            "route_end_m",
        }
    )
    # 시작이 종료보다 뒤면 남는 구간이 없다 — 저장 전에 막는다 (2026-09-04 사용자 지시).
    start_m, end_m = payload.route_start_m, payload.route_end_m
    if start_m is not None and end_m is not None and start_m >= end_m:
        raise HTTPException(
            status_code=400,
            detail="노선 시작 누가거리는 종료 누가거리보다 작아야 합니다.",
        )
    # 담당자·로고는 같은 회사 것만 (B01 프로젝트 수정과 같은 규칙).
    await check_project_refs(int(company_id), title_block)

    try:
        result = await create_project(
            request=request,
            user_id=int(session["user_id"]),
            company_id=int(company_id),
            name=payload.name.strip(),
            region=payload.region.strip(),
            road_type=payload.road_type,
            project_year=payload.project_year,
            estimated_length_m=payload.estimated_length_m,
            memo=payload.memo.strip() if payload.memo else None,
            title_block=title_block,
        )
        return CreateProjectResponse(**result)
    except ValueError as exc:
        raise HTTPException(status_code=400, detail=str(exc)) from exc
    except Exception as exc:
        raise HTTPException(
            status_code=500, detail="프로젝트 생성 처리 중 오류가 발생했습니다."
        ) from exc