342 lines
11 KiB
Python
342 lines
11 KiB
Python
import uuid
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from datetime import datetime
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from decimal import Decimal
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from typing import List
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import brewman.schemas.input as schema_in
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import brewman.schemas.voucher as output
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from fastapi import APIRouter, Depends, File, HTTPException, Request, Security, status
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from sqlalchemy import func
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from sqlalchemy.exc import SQLAlchemyError
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from sqlalchemy.orm import Session
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from ..core.security import get_current_active_user as get_user
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from ..core.session import get_date, set_date
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from ..db.session import SessionLocal
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from ..models import AccountBase, Product
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from ..models.voucher import Batch, Inventory, Journal, Voucher, VoucherType
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from ..schemas.auth import UserToken
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from .db_image import save_files, update_files
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from .voucher import (
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blank_voucher,
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check_voucher_edit_allowed,
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check_voucher_lock_info,
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voucher_info,
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)
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router = APIRouter()
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# Dependency
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def get_db() -> Session:
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try:
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db = SessionLocal()
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yield db
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finally:
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db.close()
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@router.post("", response_model=output.Voucher)
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def save_route(
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request: Request,
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data: schema_in.PurchaseIn = Depends(schema_in.PurchaseIn.load_form),
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db: Session = Depends(get_db),
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i: List[bytes] = File(None),
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t: List[bytes] = File(None),
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user: UserToken = Security(get_user, scopes=["purchase"]),
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):
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try:
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item: Voucher = save(data, user, db)
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save_inventories(item, data.inventories, db)
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save_journals(item, data.vendor, db)
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save_files(item.id, i, t, db)
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db.commit()
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set_date(data.date_.strftime("%d-%b-%Y"), request.session)
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info = voucher_info(item, db)
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return info
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except SQLAlchemyError as e:
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db.rollback()
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raise HTTPException(
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status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
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detail=str(e),
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)
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except Exception:
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db.rollback()
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raise
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def save(data: schema_in.PurchaseIn, user: UserToken, db: Session) -> Voucher:
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check_voucher_lock_info(None, data.date_, db)
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voucher = Voucher(
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date=data.date_,
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narration=data.narration,
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is_starred=data.is_starred,
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user_id=user.id_,
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type_=VoucherType.by_name(data.type_),
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)
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db.add(voucher)
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return voucher
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def save_inventories(
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voucher: Voucher, inventories: List[schema_in.Inventory], db: Session
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):
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for item in inventories:
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product: Product = (
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db.query(Product).filter(Product.id == item.product.id_).first()
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)
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batch = Batch(
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name=voucher.date,
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product=product,
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quantity_remaining=item.quantity,
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rate=item.rate,
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tax=item.tax,
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discount=item.discount,
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)
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db.add(batch)
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inventory = Inventory(
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id_=item.id_,
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product=product,
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batch=batch,
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quantity=item.quantity,
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rate=item.rate,
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tax=item.tax,
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discount=item.discount,
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)
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product.price = item.rate
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voucher.inventories.append(inventory)
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db.add(inventory)
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def save_journals(voucher: Voucher, ven: schema_in.AccountLink, db: Session):
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vendor = db.query(AccountBase).filter(AccountBase.id == ven.id_).first()
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journals = {}
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amount = 0
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for item in voucher.inventories:
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account = item.product.account
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amount += round(item.amount, 2)
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if account.id in journals:
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journals[account.id].amount += round(item.amount, 2)
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else:
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journals[account.id] = Journal(
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debit=1,
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cost_centre_id=account.cost_centre_id,
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account_id=account.id,
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amount=round(item.amount, 2),
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)
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journals[vendor.id] = Journal(
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debit=-1,
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cost_centre_id=vendor.cost_centre_id,
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account_id=vendor.id,
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amount=amount,
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)
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for item in journals.values():
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voucher.journals.append(item)
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db.add(item)
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@router.put("/{id_}", response_model=output.Voucher)
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def update_route(
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id_: uuid.UUID,
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request: Request,
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data: schema_in.PurchaseIn = Depends(schema_in.PurchaseIn.load_form),
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db: Session = Depends(get_db),
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i: List[bytes] = File(None),
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t: List[bytes] = File(None),
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user: UserToken = Security(get_user, scopes=["purchase"]),
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):
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try:
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item: Voucher = update(id_, data, user, db)
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update_inventory(item, data.inventories, db)
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update_journals(item, data.vendor, db)
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# journals_valid(voucher)
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update_files(item.id, data.files, i, t, db)
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db.commit()
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set_date(data.date_.strftime("%d-%b-%Y"), request.session)
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return voucher_info(item, db)
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except SQLAlchemyError as e:
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db.rollback()
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raise HTTPException(
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status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
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detail=str(e),
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)
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except Exception:
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db.rollback()
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raise
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def update(
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id_: uuid.UUID, data: schema_in.PurchaseIn, user: UserToken, db: Session
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) -> Voucher:
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voucher: Voucher = db.query(Voucher).filter(Voucher.id == id_).first()
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check_voucher_lock_info(voucher.date, data.date_, db)
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check_voucher_edit_allowed(voucher, user)
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voucher.date = data.date_
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voucher.is_starred = data.is_starred
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voucher.narration = data.narration
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voucher.user_id = user.id_
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voucher.posted = False
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voucher.last_edit_date = datetime.utcnow()
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return voucher
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def update_inventory(
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voucher: Voucher, new_inventories: List[schema_in.Inventory], db: Session
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):
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for it in range(len(voucher.inventories), 0, -1):
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item = voucher.inventories[it - 1]
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found = False
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for j in range(len(new_inventories), 0, -1):
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new_inventory = new_inventories[j - 1]
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if new_inventory.id_ == item.id:
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product = (
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db.query(Product)
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.filter(Product.id == new_inventory.product.id_)
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.first()
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)
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found = True
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if item.product_id != new_inventory.product.id_:
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raise HTTPException(
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status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
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detail="Product cannot be changed",
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)
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old_quantity = round(Decimal(item.quantity), 2)
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quantity_remaining = round(Decimal(item.batch.quantity_remaining), 2)
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if new_inventory.quantity < (old_quantity - quantity_remaining):
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raise HTTPException(
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status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
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detail=f"{old_quantity - quantity_remaining} is the minimum as it has been issued",
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)
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item.batch.quantity_remaining -= old_quantity - new_inventory.quantity
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item.quantity = new_inventory.quantity
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if voucher.date != item.batch.name:
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item.batch.name = voucher.date
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if voucher.date < item.batch.name:
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# TODO: check for issued products which might have been in a back date
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pass
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item.rate = new_inventory.rate
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item.batch.rate = new_inventory.rate
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item.discount = new_inventory.discount
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item.batch.discount = new_inventory.discount
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item.tax = new_inventory.tax
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item.batch.tax = new_inventory.tax
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product.price = new_inventory.rate
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new_inventories.remove(new_inventory)
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# TODO: Update all references of the batch with the new rates
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break
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if not found:
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has_been_issued = (
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db.query(func.count(Inventory.id))
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.filter(Inventory.batch_id == item.batch.id)
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.filter(Inventory.id != item.id)
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.scalar()
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)
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if has_been_issued > 0:
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raise HTTPException(
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status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
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detail=f"{item.product.name} has been issued, it cannot be deleted",
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)
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else:
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db.delete(item.batch)
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db.delete(item)
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voucher.inventories.remove(item)
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for new_inventory in new_inventories:
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product = (
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db.query(Product).filter(Product.id == new_inventory.product.id_).first()
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)
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batch = Batch(
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name=voucher.date,
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product_id=product.id,
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quantity_remaining=new_inventory.quantity,
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rate=new_inventory.rate,
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tax=new_inventory.tax,
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discount=new_inventory.discount,
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)
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inventory = Inventory(
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id_=None,
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product_id=product.id,
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batch=batch,
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quantity=new_inventory.quantity,
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rate=new_inventory.rate,
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tax=new_inventory.tax,
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discount=new_inventory.discount,
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)
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inventory.voucher_id = voucher.id
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db.add(batch)
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inventory.batch_id = batch.id
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product.price = new_inventory.rate
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voucher.inventories.append(inventory)
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db.add(inventory)
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def update_journals(voucher: Voucher, ven: schema_in.AccountLink, db):
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vendor = db.query(AccountBase).filter(AccountBase.id == ven.id_).first()
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journals = {}
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amount = 0
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for item in voucher.inventories:
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product = db.query(Product).filter(Product.id == item.product_id).first()
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account = product.account
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amount += item.amount
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if account.id in journals:
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journals[account.id].amount += item.amount
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else:
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journals[account.id] = Journal(
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debit=1,
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cost_centre_id=account.cost_centre_id,
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account_id=account.id,
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amount=item.amount,
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)
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journals[vendor.id] = Journal(
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debit=-1,
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cost_centre_id=vendor.cost_centre_id,
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account_id=vendor.id,
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amount=amount,
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)
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for i in range(len(voucher.journals), 0, -1):
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item = voucher.journals[i - 1]
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if item.account_id in journals:
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item.debit = journals[item.account_id].debit
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item.amount = round(journals[item.account_id].amount, 2)
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item.cost_centre_id = journals[item.account_id].cost_centre_id
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del journals[item.account_id]
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else:
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db.delete(item)
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voucher.journals.remove(item)
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for item in journals.values():
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item.amount = round(item.amount, 2)
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voucher.journals.append(item)
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db.add(item)
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@router.get("/{id_}", response_model=output.Voucher)
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def get_id(
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id_: uuid.UUID,
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db: Session = Depends(get_db),
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user: UserToken = Security(get_user, scopes=["purchase"]),
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):
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try:
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item: Voucher = db.query(Voucher).filter(Voucher.id == id_).first()
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return voucher_info(item, db)
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except SQLAlchemyError as e:
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db.rollback()
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raise HTTPException(
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status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
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detail=str(e),
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)
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except Exception:
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db.rollback()
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raise
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@router.get("", response_model=output.Voucher)
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def show_blank(
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request: Request,
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db: Session = Depends(get_db),
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user: UserToken = Security(get_user, scopes=["purchase"]),
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):
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additional_info = {"date": get_date(request.session), "type": "Purchase"}
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return blank_voucher(additional_info, db)
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