import datetime

import brewman.schemas.reports as schemas

from fastapi import APIRouter, Depends, Request, Security
from sqlalchemy.orm import Session, joinedload_all

from ...core.security import get_current_active_user as get_user
from ...core.session import get_finish_date, get_start_date, set_period
from ...db.session import SessionLocal
from ...models.voucher import Journal, Voucher, VoucherType
from ...schemas.auth import UserToken


router = APIRouter()


# Dependency
def get_db() -> Session:
    try:
        db = SessionLocal()
        yield db
    finally:
        db.close()


@router.get("", response_model=schemas.Daybook)
def report_blank(
    request: Request,
    user: UserToken = Security(get_user, scopes=["daybook"]),
):
    return {
        "startDate": get_start_date(request.session),
        "finishDate": get_finish_date(request.session),
        "body": [],
    }


@router.get("/{start}/{finish}", response_model=schemas.Daybook)
def report_data(
    start: str,
    finish: str,
    request: Request,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["daybook"]),
):
    body = build_report(start, finish, db)
    set_period(start, finish, request.session)
    return {"startDate": start, "finishDate": finish, "body": body}


def build_report(start_date, finish_date, db):
    body = []

    query = (
        db.query(Voucher)
        .options(joinedload_all(Voucher.journals, Journal.account, innerjoin=True))
        .filter(Voucher.date >= datetime.datetime.strptime(start_date, "%d-%b-%Y"))
        .filter(Voucher.date <= datetime.datetime.strptime(finish_date, "%d-%b-%Y"))
        .filter(Voucher.type != VoucherType.by_name("Issue").id)
        .order_by(Voucher.date)
        .order_by(Voucher.last_edit_date)
        .all()
    )

    for voucher in query:
        debit = 0
        credit = 0
        name_debit = ""
        name_credit = ""
        for journal in voucher.journals:
            if journal.debit == 1:
                debit += journal.amount
                name_debit += "{0} / ".format(journal.account.name)
            else:
                credit += journal.amount
                name_credit += "{0} / ".format(journal.account.name)
        name_debit = name_debit[:-3]
        name_credit = name_credit[:-3]

        body.append(
            {
                "id": voucher.id,
                "date": voucher.date.strftime("%d-%b-%Y"),
                "url": [
                    "/",
                    VoucherType.by_id(voucher.type).name.replace(" ", "-").lower(),
                    str(voucher.id),
                ],
                "type": VoucherType.by_id(voucher.type).name,
                "narration": voucher.narration,
                "posted": voucher.posted,
                "debitText": name_debit,
                "debitAmount": debit,
                "creditText": name_credit,
                "creditAmount": credit,
            }
        )
    return body