from fastapi import HTTPException
from sqlalchemy.ext.asyncio import AsyncSession

from job.candidate.models import Interviews
from job.interviews.serializers import serialize_interview


class Interview:
    def __init__(self,session:AsyncSession):
        self.session=session

    async def get_interview(self,interview_id=None,inbox_id=None):
        if interview_id:
            row=await Interviews.get_interview_by_id(self.session,interview_id)
            if not row:
                raise HTTPException(status_code=404,detail="Interview not found")
            return serialize_interview(row)
        if inbox_id is None:
            raise HTTPException(status_code=400,detail="interview_id or inbox_id is required")
        rows=await Interviews.get_interviews_by_inbox(self.session,int(inbox_id))
        return [serialize_interview(r) for r in rows]

    async def create_interview(self,payload):
        fields={
            "interview_date":payload.get("interview_date"),
            "interview_time":payload.get("interview_time"),
            "interview_type":payload.get("interview_type") or "",
            "interview_status":payload.get("interview_status") or "",
            "inbox_id":payload.get("inbox_id"),
        }
        fields={k:v for k,v in fields.items() if v is not None}
        row=await Interviews.insert_interview(self.session,fields)
        return serialize_interview(row)

    async def update_interview(self,interview_id,payload):
        fields={k:v for k,v in payload.items() if v is not None}
        if not fields:
            raise HTTPException(status_code=400,detail="No fields to update")
        row=await Interviews.update_interview(self.session,interview_id,fields)
        if not row:
            raise HTTPException(status_code=404,detail="Interview not found")
        return serialize_interview(row)