from datetime import date, datetime
from typing import List

import brewman.schemas.reports as schemas

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

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 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.PurchaseEntries)
def report_blank(
    request: Request,
    user: UserToken = Security(get_user, scopes=["purchase-entries"]),
):
    return {
        "startDate": get_start_date(request.session),
        "finishDate": get_finish_date(request.session),
        "body": [],
    }


@router.get("/{start}/{finish}", response_model=schemas.PurchaseEntries)
def report_data(
    start: str,
    finish: str,
    request: Request,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["purchase-entries"]),
):
    start_date = datetime.strptime(start, "%d-%b-%Y")
    finish_date = datetime.strptime(finish, "%d-%b-%Y")
    body = build_report(start_date, finish_date, db)
    set_period(start, finish, request.session)
    return {"startDate": start, "finishDate": finish, "body": body}


def build_report(start_date: date, finish_date, db):
    body = []
    query: List[Voucher] = (
        db.query(Voucher)
        .filter(Voucher.date >= start_date)
        .filter(Voucher.date <= finish_date)
        .filter(Voucher.type == VoucherType.by_name("Purchase").id)
        .order_by(Voucher.date)
        .all()
    )

    for voucher in query:
        journal = [j for j in voucher.journals if j.debit == -1]
        journal = journal[0]
        for item in voucher.inventories:
            row = {
                "date": voucher.date.strftime("%d-%b-%Y"),
                "supplier": journal.account.name,
                "url": [
                    "/",
                    VoucherType.by_id(voucher.type).name.replace(" ", "-").lower(),
                    str(voucher.id),
                ],
                "product": item.product.full_name,
                "quantity": item.quantity,
                "rate": item.rate,
                "tax": item.tax,
                "discount": item.discount,
                "amount": item.amount,
            }
            body.append(row)
    return body