from fastapi import APIRouter, Depends, HTTPException, Body
from sqlalchemy.orm import Session
from server.utils.database import get_db
from fastapi.encoders import jsonable_encoder
from server.controllers.mail import MailContactFilter, MailSummary,MailDate
from server.utils.summarize import summarize,summarize_week
import json
from server.crud.mail import (
    get_all_mails,
    get_top_n_mails,
    get_contact_id_by_email,
    get_mails_by_contact_id,
    get_mails_by_date_range,
    )

router = APIRouter(prefix="/mails")

@router.get("/all")
def read_all_mails(db: Session = Depends(get_db)):
    mails = get_all_mails(db)
    return jsonable_encoder([
        {
            "id": str(mail.id),
            "bodyPlainRedacted": mail.bodyPlainRedacted
        }
        for mail in mails
    ])


@router.get("/topk")
def read_all_mails(db: Session = Depends(get_db),topk: int=10):
    mails = get_top_n_mails(db,topk=topk)
    return jsonable_encoder([
        {
            "id": str(mail.id),
            "bodyPlainRedacted": mail.bodyPlainRedacted
        }
        for mail in mails
    ])


@router.post("/by-contact")
def get_mails_for_contact(payload: MailContactFilter, db: Session = Depends(get_db))-> MailSummary :
    contact_id = payload.contact_id
    user_email = payload.user_email

    if not contact_id and not user_email:
        raise HTTPException(status_code=400, detail="Either contact_id or user_email must be provided")

    if user_email:
        contact_id = get_contact_id_by_email(db, user_email)
        if contact_id is None:
            raise HTTPException(status_code=404, detail="User email not found")

    mails = get_mails_by_contact_id(db, contact_id)
    full_text=""
    for i in mails:
        full_text+=i.bodyPlainRedacted
    obj=MailSummary()
    obj.full_mail=full_text
    obj.result=summarize(full_text)
    return obj


@router.post("/weekly")
def get_summary_weekly(payload:MailDate, db: Session=Depends(get_db))->MailSummary:
    star_date=payload.start_date
    end_date=payload.end_date
    mails=get_mails_by_date_range(db,start_date=star_date, end_date=end_date)
    full_text=""
    for i in mails:
        full_text+=i.bodyPlainRedacted
    obj=MailSummary()
    res=summarize_week(full_text)
    if res:
        obj.result={"summary":res}
        return obj
    else:
        obj.result={"summary":"No mail found"}
        return obj