671 lines
25 KiB
Python
671 lines
25 KiB
Python
from django.db import models, transaction
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from django.utils.translation import gettext_lazy as _
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from django.utils import timezone
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from django.contrib.auth.models import User
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from django.db.models.signals import post_save
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from django.dispatch import receiver
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import base64
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import os
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from django.conf import settings as django_settings
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from django.utils.translation import gettext as _, get_language
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from django.utils.formats import date_format
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from .utils import number_to_words_en, send_whatsapp_document
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from django.core.paginator import Paginator
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import decimal
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from django.contrib.auth.models import User, Group, Permission
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from django.urls import reverse
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import random
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import string
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from django.shortcuts import render, get_object_or_404, redirect
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from django.db.models import Sum, Count, F, Q
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from django.db.models.functions import TruncDate, TruncMonth
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from django.http import JsonResponse, HttpResponse
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from django.views.decorators.csrf import csrf_exempt
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from django.contrib.auth.decorators import login_required
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from .models import (
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Expense, ExpenseCategory,
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Product, Sale, Category, Unit, Customer, Supplier,
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Purchase, PurchaseItem, PurchasePayment,
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SaleItem, SalePayment, SystemSetting,
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Quotation, QuotationItem,
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SaleReturn, SaleReturnItem, PurchaseReturn, PurchaseReturnItem, PurchaseOrder, PurchaseOrderItem,
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PaymentMethod, HeldSale, LoyaltyTier, LoyaltyTransaction,
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Device, CashierCounterRegistry, CashierSession
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)
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import json
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from datetime import timedelta
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from django.utils import timezone
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from django.contrib import messages
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from django.utils.text import slugify
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import openpyxl
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import csv
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@login_required
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def index(request):
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"""
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Enhanced Meezan Dashboard View
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"""
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total_products = Product.objects.count()
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total_sales_count = Sale.objects.count()
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total_sales_amount = Sale.objects.aggregate(total=Sum('total_amount'))['total'] or 0
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total_customers = Customer.objects.count()
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site_settings = SystemSetting.objects.first()
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# --- Charts & Analytics Data ---
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# 1. Monthly Sales (Last 6 months)
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today = timezone.now().date()
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six_months_ago = today - timedelta(days=180)
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monthly_sales = Sale.objects.filter(created_at__date__gte=six_months_ago)\
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.annotate(month=TruncMonth('created_at'))\
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.values('month')\
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.annotate(total=Sum('total_amount'))\
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.order_by('month')
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monthly_labels = []
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monthly_data = []
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current_lang = get_language()
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for entry in monthly_sales:
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dt = entry['month']
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# Format: "Jan 2026" or localized equivalent
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monthly_labels.append(date_format(dt, "M Y"))
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monthly_data.append(float(entry['total']))
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# 2. Daily Sales (Last 7 days)
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last_week = today - timedelta(days=7)
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daily_sales = Sale.objects.filter(created_at__date__gte=last_week)\
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.annotate(day=TruncDate('created_at'))\
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.values('day')\
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.annotate(total=Sum('total_amount'))\
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.order_by('day')
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chart_labels = []
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chart_data = []
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# Fill in missing days for a smooth line chart
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days_map = {entry['day']: entry['total'] for entry in daily_sales}
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for i in range(7):
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d = last_week + timedelta(days=i)
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chart_labels.append(date_format(d, "M d")) # "Feb 07"
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chart_data.append(float(days_map.get(d, 0)))
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# 3. Sales by Category
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category_sales = SaleItem.objects.values(
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'product__category__name_en',
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'product__category__name_ar'
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).annotate(total=Sum('line_total')).order_by('-total')[:5]
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category_labels = []
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category_data = []
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for item in category_sales:
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name_en = item['product__category__name_en'] or "Uncategorized"
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name_ar = item['product__category__name_ar'] or name_en
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label = name_ar if current_lang == 'ar' else name_en
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category_labels.append(label)
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category_data.append(float(item['total']))
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# 4. Top Selling Products
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top_products = SaleItem.objects.values(
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'product__name_en',
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'product__name_ar'
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).annotate(
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total_qty=Sum('quantity'),
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total_rev=Sum('line_total')
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).order_by('-total_qty')[:5]
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# 5. Payment Methods
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payment_stats = SalePayment.objects.values('payment_method_name').annotate(count=Count('id'))
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payment_labels = []
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payment_data = []
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for stat in payment_stats:
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method_name = stat['payment_method_name']
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# Simple translation/mapping for known methods
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if method_name:
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if method_name.lower() == 'cash':
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label = _('Cash')
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elif method_name.lower() == 'card':
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label = _('Card')
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else:
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label = method_name
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else:
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label = _('Unknown')
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payment_labels.append(str(label))
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payment_data.append(stat['count'])
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# --- Inventory Alerts ---
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low_stock_threshold = 10
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low_stock_products = Product.objects.filter(stock_quantity__lte=F('min_stock_level')).select_related('category')[:5]
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low_stock_count = Product.objects.filter(stock_quantity__lte=F('min_stock_level')).count()
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expired_count = Product.objects.filter(expiry_date__lt=today).count()
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# --- Recent Transactions ---
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recent_sales = Sale.objects.select_related('customer', 'created_by').order_by('-created_at')[:5]
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context = {
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'total_products': total_products,
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'total_sales_count': total_sales_count,
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'total_sales_amount': total_sales_amount,
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'total_customers': total_customers,
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'site_settings': site_settings,
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'monthly_labels': json.dumps(monthly_labels),
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'monthly_data': json.dumps(monthly_data),
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'chart_labels': json.dumps(chart_labels),
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'chart_data': json.dumps(chart_data),
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'category_labels': json.dumps(category_labels),
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'category_data': json.dumps(category_data),
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'top_products': top_products,
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'payment_labels': json.dumps(payment_labels),
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'payment_data': json.dumps(payment_data),
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'low_stock_products': low_stock_products,
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'low_stock_count': low_stock_count,
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'expired_count': expired_count,
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'recent_sales': recent_sales,
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}
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return render(request, 'core/index.html', context)
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@login_required
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def inventory(request):
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products = Product.objects.all().order_by('-id')
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categories = Category.objects.all()
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units = Unit.objects.all()
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# Filter by Category
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category_id = request.GET.get('category')
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if category_id:
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products = products.filter(category_id=category_id)
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# Filter by Search
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search_query = request.GET.get('search')
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if search_query:
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products = products.filter(
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Q(name_en__icontains=search_query) |
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Q(name_ar__icontains=search_query) |
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Q(sku__icontains=search_query)
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)
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paginator = Paginator(products, 25)
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page_number = request.GET.get('page')
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page_obj = paginator.get_page(page_number)
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context = {
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'products': page_obj,
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'categories': categories,
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'units': units,
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}
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return render(request, 'core/inventory.html', context)
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@login_required
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def customers(request):
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customers = Customer.objects.all().order_by('-id')
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paginator = Paginator(customers, 25)
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return render(request, 'core/customers.html', {'customers': paginator.get_page(request.GET.get('page'))})
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@login_required
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def suppliers(request):
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suppliers = Supplier.objects.all().order_by('-id')
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paginator = Paginator(suppliers, 25)
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return render(request, 'core/suppliers.html', {'suppliers': paginator.get_page(request.GET.get('page'))})
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@login_required
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def purchases(request):
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purchases = Purchase.objects.all().order_by('-created_at')
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paginator = Paginator(purchases, 25)
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return render(request, 'core/purchases.html', {'purchases': paginator.get_page(request.GET.get('page'))})
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@login_required
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def purchase_detail(request, pk):
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purchase = get_object_or_404(Purchase, pk=pk)
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return render(request, 'core/purchase_detail.html', {'purchase': purchase, 'settings': SystemSetting.objects.first()})
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@login_required
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def purchase_create(request):
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# Stub for purchase creation - redirects to list for now
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return redirect('purchases')
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@login_required
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def add_product(request):
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if request.method == 'POST':
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# Quick add logic for simplified form
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name_en = request.POST.get('name_en')
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sku = request.POST.get('sku')
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price = request.POST.get('price')
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cost_price = request.POST.get('cost_price')
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stock = request.POST.get('stock_quantity')
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category_id = request.POST.get('category')
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try:
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Product.objects.create(
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name_en=name_en, sku=sku, price=price, cost_price=cost_price,
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stock_quantity=stock, category_id=category_id,
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created_by=request.user
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)
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messages.success(request, 'Product added successfully.')
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except Exception as e:
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messages.error(request, str(e))
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return redirect('inventory')
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@login_required
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def edit_product(request, pk):
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product = get_object_or_404(Product, pk=pk)
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if request.method == 'POST':
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product.name_en = request.POST.get('name_en')
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product.name_ar = request.POST.get('name_ar')
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product.sku = request.POST.get('sku')
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product.price = request.POST.get('price')
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product.cost_price = request.POST.get('cost_price')
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product.stock_quantity = request.POST.get('stock_quantity')
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product.min_stock_level = request.POST.get('min_stock_level') or 0
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product.category_id = request.POST.get('category')
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product.save()
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messages.success(request, 'Product updated.')
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return redirect('inventory')
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# Render edit form if needed, but for now redirecting
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return redirect('inventory')
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@login_required
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def delete_product(request, pk):
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product = get_object_or_404(Product, pk=pk)
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product.delete()
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messages.success(request, 'Product deleted.')
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return redirect('inventory')
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@login_required
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def barcode_labels(request):
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# Logic to print barcodes
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return render(request, 'core/barcode_labels.html')
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@login_required
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def import_products(request):
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# Logic to import from Excel
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return redirect('inventory')
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@login_required
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def pos(request):
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# Ensure a session is active for this user/device
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# Check if this user has an open session
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# For now, we'll just show the POS
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products = Product.objects.filter(is_active=True).select_related('category')
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categories = Category.objects.all()
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customers = Customer.objects.filter(is_active=True)
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payment_methods = PaymentMethod.objects.filter(is_active=True)
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settings = SystemSetting.objects.first()
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context = {
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'products': products,
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'categories': categories,
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'customers': customers,
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'payment_methods': payment_methods,
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'settings': settings,
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}
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return render(request, 'core/pos.html', context)
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@login_required
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def customer_display(request):
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return render(request, 'core/customer_display.html')
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# --- Reports ---
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@login_required
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def reports(request):
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return render(request, 'core/reports.html')
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@login_required
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def customer_statement(request):
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customers = Customer.objects.all()
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selected_customer = None
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transactions = []
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if request.GET.get('customer'):
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selected_customer = get_object_or_404(Customer, pk=request.GET.get('customer'))
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# Gather sales, payments, etc.
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sales = Sale.objects.filter(customer=selected_customer).annotate(type=models.Value('Sale', output_field=models.CharField()))
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payments = SalePayment.objects.filter(sale__customer=selected_customer).annotate(type=models.Value('Payment', output_field=models.CharField()))
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# Merge and sort by date... (Simplified)
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transactions = list(sales) + list(payments)
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transactions.sort(key=lambda x: x.created_at, reverse=True)
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return render(request, 'core/customer_statement.html', {'customers': customers, 'selected_customer': selected_customer, 'transactions': transactions})
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@login_required
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def supplier_statement(request):
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suppliers = Supplier.objects.all()
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return render(request, 'core/supplier_statement.html', {'suppliers': suppliers})
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@login_required
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def cashflow_report(request):
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sales = Sale.objects.all()
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expenses = Expense.objects.all()
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purchases = Purchase.objects.all()
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if request.GET.get('start_date'):
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sales = sales.filter(created_at__date__gte=request.GET.get('start_date'))
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expenses = expenses.filter(date__gte=request.GET.get('start_date'))
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purchases = purchases.filter(created_at__date__gte=request.GET.get('start_date'))
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if request.GET.get('end_date'):
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sales = sales.filter(created_at__date__lte=request.GET.get('end_date'))
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expenses = expenses.filter(date__lte=request.GET.get('end_date'))
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purchases = purchases.filter(created_at__date__lte=request.GET.get('end_date'))
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total_sales = sales.aggregate(total=Sum('total_amount'))['total'] or 0
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total_expenses = expenses.aggregate(total=Sum('amount'))['total'] or 0
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total_purchases = purchases.aggregate(total=Sum('total_amount'))['total'] or 0
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return render(request, 'core/cashflow_report.html', {'total_sales': total_sales, 'total_expenses': total_expenses, 'total_purchases': total_purchases, 'net_profit': total_sales - total_expenses - total_purchases})
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@login_required
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def invoice_list(request):
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sales = Sale.objects.all().order_by('-created_at')
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paginator = Paginator(sales, 25)
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return render(request, 'core/invoices.html', {'sales': paginator.get_page(request.GET.get('page'))})
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@login_required
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def invoice_detail(request, pk):
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return render(request, 'core/invoice_detail.html', {'sale': get_object_or_404(Sale, pk=pk), 'settings': SystemSetting.objects.first()})
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@login_required
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def invoice_create(request):
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customers = Customer.objects.filter(is_active=True)
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products = Product.objects.filter(is_active=True).select_related('category')
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payment_methods = PaymentMethod.objects.filter(is_active=True)
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site_settings = SystemSetting.objects.first()
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decimal_places = 2
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if site_settings:
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decimal_places = site_settings.decimal_places
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context = {
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'customers': customers,
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'products': products,
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'payment_methods': payment_methods,
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'site_settings': site_settings,
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'decimal_places': decimal_places,
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}
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return render(request, 'core/invoice_create.html', context)
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# --- STUBS & MISSING VIEWS ---
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@login_required
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def quotations(request): return render(request, 'core/quotations.html')
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@login_required
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def quotation_create(request): return redirect('quotations')
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@login_required
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def quotation_detail(request, pk): return redirect('quotations')
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@login_required
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def convert_quotation_to_invoice(request, pk): return redirect('quotations')
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@login_required
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def delete_quotation(request, pk): return redirect('quotations')
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@csrf_exempt
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def create_quotation_api(request): return JsonResponse({'success': False})
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@login_required
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def sales_returns(request): return render(request, 'core/sales_returns.html')
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@login_required
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def sale_return_create(request): return redirect('sales_returns')
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@login_required
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def sale_return_detail(request, pk): return redirect('sales_returns')
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@login_required
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def delete_sale_return(request, pk): return redirect('sales_returns')
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@csrf_exempt
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def create_sale_return_api(request): return JsonResponse({'success': False})
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@login_required
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def add_purchase_payment(request, pk): return redirect('purchases')
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@login_required
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def delete_purchase(request, pk): return redirect('purchases')
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@login_required
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def purchase_returns(request): return render(request, 'core/purchase_returns.html')
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@login_required
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def purchase_return_create(request): return redirect('purchase_returns')
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@login_required
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def purchase_return_detail(request, pk): return redirect('purchase_returns')
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@login_required
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def delete_purchase_return(request, pk): return redirect('purchase_returns')
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@csrf_exempt
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def create_purchase_return_api(request): return JsonResponse({'success': False})
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@login_required
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def export_expenses_excel(request): return redirect('expenses')
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@csrf_exempt
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def update_sale_api(request, pk): return JsonResponse({'success': False})
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@csrf_exempt
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def hold_sale_api(request): return JsonResponse({'success': False})
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@csrf_exempt
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def get_held_sales_api(request): return JsonResponse({'sales': []})
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@csrf_exempt
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def recall_held_sale_api(request, pk): return JsonResponse({'success': False})
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@csrf_exempt
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def delete_held_sale_api(request, pk): return JsonResponse({'success': False})
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@login_required
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def add_customer(request): return redirect('customers')
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@login_required
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def edit_customer(request, pk): return redirect('customers')
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@login_required
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def delete_customer(request, pk): return redirect('customers')
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@csrf_exempt
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def add_customer_ajax(request): return JsonResponse({'success': False})
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@login_required
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def add_supplier(request): return redirect('suppliers')
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@login_required
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def edit_supplier(request, pk): return redirect('suppliers')
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@login_required
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def delete_supplier(request, pk): return redirect('suppliers')
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@csrf_exempt
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def add_supplier_ajax(request): return JsonResponse({'success': False})
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@login_required
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def suggest_sku(request): return JsonResponse({'sku': '12345'})
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@login_required
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def add_category(request): return redirect('inventory')
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@login_required
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def edit_category(request, pk): return redirect('inventory')
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@login_required
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def delete_category(request, pk): return redirect('inventory')
|
|
@csrf_exempt
|
|
def add_category_ajax(request): return JsonResponse({'success': False})
|
|
@login_required
|
|
def import_categories(request): return redirect('inventory')
|
|
@login_required
|
|
def add_unit(request): return redirect('inventory')
|
|
@login_required
|
|
def edit_unit(request, pk): return redirect('inventory')
|
|
@login_required
|
|
def delete_unit(request, pk): return redirect('inventory')
|
|
@csrf_exempt
|
|
def add_unit_ajax(request): return JsonResponse({'success': False})
|
|
@login_required
|
|
def add_payment_method(request): return redirect('settings')
|
|
@login_required
|
|
def edit_payment_method(request, pk): return redirect('settings')
|
|
@login_required
|
|
def delete_payment_method(request, pk): return redirect('settings')
|
|
@csrf_exempt
|
|
def add_payment_method_ajax(request): return JsonResponse({'success': False})
|
|
@login_required
|
|
def add_loyalty_tier(request): return redirect('settings')
|
|
@login_required
|
|
def edit_loyalty_tier(request, pk): return redirect('settings')
|
|
@login_required
|
|
def delete_loyalty_tier(request, pk): return redirect('settings')
|
|
@csrf_exempt
|
|
def get_customer_loyalty_api(request, pk): return JsonResponse({'success': False})
|
|
@csrf_exempt
|
|
def send_invoice_whatsapp(request): return JsonResponse({'success': False})
|
|
@csrf_exempt
|
|
def test_whatsapp_connection(request): return JsonResponse({'success': False})
|
|
@login_required
|
|
def add_device(request): return redirect('settings')
|
|
@login_required
|
|
def edit_device(request, pk): return redirect('settings')
|
|
@login_required
|
|
def delete_device(request, pk): return redirect('settings')
|
|
@login_required
|
|
def lpo_list(request): return render(request, 'core/lpo_list.html')
|
|
@login_required
|
|
def lpo_create(request): return redirect('lpo_list')
|
|
@login_required
|
|
def lpo_detail(request, pk): return redirect('lpo_list')
|
|
@login_required
|
|
def convert_lpo_to_purchase(request, pk): return redirect('lpo_list')
|
|
@login_required
|
|
def lpo_delete(request, pk): return redirect('lpo_list')
|
|
@csrf_exempt
|
|
def create_lpo_api(request): return JsonResponse({'success': False})
|
|
@login_required
|
|
def cashier_registry(request): return redirect('settings')
|
|
@login_required
|
|
def cashier_session_list(request): return render(request, 'core/cashier_sessions.html')
|
|
@login_required
|
|
def start_session(request): return redirect('cashier_session_list')
|
|
@login_required
|
|
def close_session(request): return redirect('cashier_session_list')
|
|
@login_required
|
|
def session_detail(request, pk): return redirect('cashier_session_list')
|
|
@login_required
|
|
def expenses_view(request): return render(request, 'core/expenses.html')
|
|
@login_required
|
|
def expense_create_view(request): return redirect('expenses')
|
|
@login_required
|
|
def expense_delete_view(request, pk): return redirect('expenses')
|
|
@login_required
|
|
def expense_categories_view(request): return render(request, 'core/expense_categories.html')
|
|
@login_required
|
|
def expense_category_delete_view(request, pk): return redirect('expense_categories')
|
|
@login_required
|
|
def expense_report(request): return render(request, 'core/expense_report.html')
|
|
@login_required
|
|
def customer_payments(request): return redirect('invoices')
|
|
@login_required
|
|
def customer_payment_receipt(request, pk): return redirect('invoices')
|
|
@login_required
|
|
def sale_receipt(request, pk): return redirect('invoices')
|
|
@login_required
|
|
def edit_invoice(request, pk): return redirect('invoices')
|
|
@login_required
|
|
def add_sale_payment(request, pk): return redirect('invoices')
|
|
@login_required
|
|
def delete_sale(request, pk): return redirect('invoices')
|
|
@login_required
|
|
def supplier_payments(request): return redirect('purchases')
|
|
@login_required
|
|
def settings_view(request): return render(request, 'core/settings.html')
|
|
@login_required
|
|
def profile_view(request): return render(request, 'core/profile.html')
|
|
@login_required
|
|
def user_management(request): return render(request, 'core/users.html')
|
|
@csrf_exempt
|
|
def group_details_api(request, pk): return JsonResponse({'success': False})
|
|
@csrf_exempt
|
|
def create_sale_api(request):
|
|
if request.method != 'POST':
|
|
return JsonResponse({'success': False, 'error': 'Invalid request method'})
|
|
|
|
try:
|
|
data = json.loads(request.body)
|
|
|
|
customer_id = data.get('customer_id')
|
|
items = data.get('items', [])
|
|
discount = decimal.Decimal(str(data.get('discount', 0)))
|
|
paid_amount = decimal.Decimal(str(data.get('paid_amount', 0)))
|
|
payment_type = data.get('payment_type', 'cash')
|
|
payment_method_id = data.get('payment_method_id')
|
|
due_date = data.get('due_date')
|
|
notes = data.get('notes', '')
|
|
invoice_number = data.get('invoice_number')
|
|
|
|
if not items:
|
|
return JsonResponse({'success': False, 'error': 'No items in sale'})
|
|
|
|
with transaction.atomic():
|
|
customer = None
|
|
if customer_id:
|
|
customer = Customer.objects.get(pk=customer_id)
|
|
|
|
# Calculate totals server-side for security
|
|
subtotal = decimal.Decimal(0)
|
|
vat_amount = decimal.Decimal(0)
|
|
|
|
sale = Sale(
|
|
customer=customer,
|
|
created_by=request.user,
|
|
payment_status='pending',
|
|
discount=discount,
|
|
notes=notes,
|
|
invoice_number=invoice_number
|
|
)
|
|
if due_date:
|
|
sale.due_date = due_date
|
|
sale.save()
|
|
|
|
for item in items:
|
|
product = Product.objects.select_for_update().get(pk=item['id'])
|
|
qty = decimal.Decimal(str(item['quantity']))
|
|
unit_price = decimal.Decimal(str(item['price']))
|
|
|
|
# Check stock
|
|
if product.stock_quantity < qty:
|
|
settings = SystemSetting.objects.first()
|
|
if not settings or not settings.allow_zero_stock_sales:
|
|
raise Exception(f"Insufficient stock for {product.name_en}")
|
|
|
|
line_total = unit_price * qty
|
|
line_vat = line_total * (product.vat / 100) if product.vat else 0
|
|
|
|
SaleItem.objects.create(
|
|
sale=sale,
|
|
product=product,
|
|
quantity=qty,
|
|
unit_price=unit_price,
|
|
line_total=line_total
|
|
)
|
|
|
|
product.stock_quantity -= qty
|
|
product.save()
|
|
|
|
subtotal += line_total
|
|
vat_amount += decimal.Decimal(line_vat)
|
|
|
|
sale.subtotal = subtotal
|
|
sale.vat_amount = vat_amount
|
|
sale.total_amount = subtotal + vat_amount - discount
|
|
|
|
if payment_type == 'credit':
|
|
sale.payment_status = 'unpaid'
|
|
elif paid_amount >= sale.total_amount:
|
|
sale.payment_status = 'paid'
|
|
else:
|
|
sale.payment_status = 'partial'
|
|
|
|
sale.save()
|
|
|
|
if paid_amount > 0 and payment_type != 'credit':
|
|
payment_method = None
|
|
if payment_method_id:
|
|
payment_method = PaymentMethod.objects.get(pk=payment_method_id)
|
|
|
|
SalePayment.objects.create(
|
|
sale=sale,
|
|
amount=paid_amount,
|
|
payment_method=payment_method,
|
|
payment_date=timezone.now(),
|
|
created_by=request.user,
|
|
notes=f"Initial payment ({payment_type})"
|
|
)
|
|
|
|
return JsonResponse({'success': True, 'sale_id': sale.id})
|
|
|
|
except Exception as e:
|
|
return JsonResponse({'success': False, 'error': str(e)})
|
|
|
|
@csrf_exempt
|
|
def create_purchase_api(request): return JsonResponse({'success': False})
|
|
@csrf_exempt
|
|
def search_customers_api(request): return JsonResponse({'customers': []})
|
|
@login_required
|
|
def pos_sync_update(request): return JsonResponse({'success': False})
|
|
@login_required
|
|
def pos_sync_state(request): return JsonResponse({'success': False})
|