from fastapi import APIRouter,Depends,Query
from fastapi.responses import JSONResponse
from fastapi import HTTPException
from db_setup import get_session
from job.candidate.views import FileRead,CandidateView
from sqlalchemy.ext.asyncio import AsyncSession
from users.permissions import PermissionTag, require_permission
from job.job_post.views import JobPost,JobPostCreate
import logging
from job.job_post.plugins import PlatformAlias
from fastapi import UploadFile, File
from dotenv import load_dotenv
from datetime import datetime, time, timezone

load_dotenv()
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

router = APIRouter()



@router.get("/jobs/alias")
async def get_job_alias():
    try:
        alias_lst=[k.name for k in PlatformAlias]
        return JSONResponse(content={"data":alias_lst,"status_code":200})
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500,detail=str(e))


@router.post("/candidate/cv_upload")
async def cv_upload(
    file: UploadFile = File(...),
    current_user: dict = Depends(require_permission(PermissionTag.CANDIDATES_CREATE)),
    session: AsyncSession = Depends(get_session),
):
    try:
        file_content = await file.read()
        logger.info(f"Received file: {file.filename} ({len(file_content)} bytes)")
        service=FileRead(session=session,filename=file.filename,file=file_content)
        data=await service.read_file()

        return JSONResponse(content={"data":data,"status_code":200})
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500,detail=str(e))


@router.post("/candidate/inbox-match")
async def candidate_inbox_match(
    inbox_message_id: str = Query(...),
    current_user: dict = Depends(require_permission(PermissionTag.CANDIDATES_EDIT)),
    session: AsyncSession = Depends(get_session),
):
    try:
        service=FileRead(session=session)
        data=await service.match_inbox_cv(inbox_message_id)
        return JSONResponse(content={"data":data,"status_code":200})
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500,detail=str(e))


@router.post("/job/post-job")
async def post_job(
    payload: JobPostCreate,
    current_user: dict = Depends(require_permission(PermissionTag.JOB_BOARD_CREATE)),
    session: AsyncSession = Depends(get_session),
):
    try:
        service=JobPost(session=session)
        data=payload.model_dump()
        if data['mode']=="customScheduled":
            data['due_at']=datetime.combine(
                data['scheduler_date'],
                data['scheduler_time'] or time(0, 0, 0),
                tzinfo=timezone.utc,
            ).strftime("%Y-%m-%dT%H:%M:%S.000Z")
        result=await service.post_job(data,current_user)
        return JSONResponse(content={"data":result,"status_code":200})
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500,detail=str(e))


@router.get("/job/buffer/channels")
async def buffer_channels(
    current_user: dict = Depends(require_permission(PermissionTag.JOB_BOARD_VIEW)),
    session: AsyncSession = Depends(get_session),
):
    try:
        service=JobPost(session=session)
        data=await service.list_channels()
        return JSONResponse(content={"data":data,"total":len(data),"status_code":200})
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500,detail=str(e))

@router.get("/candidate/fetch")
async def fetch_candidate(
    user_id:str=Query(None),
    limit:int=Query(10),
    offset:int=Query(0),
    search:str=Query(None),
    current_user: dict = Depends(require_permission(PermissionTag.CANDIDATES_VIEW)),
    session: AsyncSession = Depends(get_session),
):
    try:
        service=CandidateView(session=session)
        data=await service.get_candidate(user_id=user_id,limit=limit,offset=offset,search=search)
        # total is the RESULT-SET size, not len(data) — a pager cannot be driven
        # off the page length. By id stays 1, per the house envelope.
        total=await service.count_candidates(user_id=user_id,search=search) if isinstance(data,list) else 1
        return JSONResponse(content={"data":data,"total":total,"status_code":200})
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500,detail=str(e))