Унификация генерации номеров документов и оптимизация кода

- Унифицирован формат номеров документов: IN-XXXXXX (6 цифр), как WO-XXXXXX и MOVE-XXXXXX
- Убрано дублирование функции _extract_number_from_document_number
- Оптимизирована инициализация счетчика incoming: быстрая проверка перед полной инициализацией
- Удален неиспользуемый файл utils.py (функциональность перенесена в document_generator.py)
- Все функции генерации номеров используют единый подход через DocumentCounter.get_next_value()

myproject/inventory/admin.py

@@ -7,7 +7,8 @@ from decimal import Decimal
 from inventory.models import (
     Warehouse, StockBatch, Incoming, IncomingBatch, Sale, WriteOff, Transfer,
     Inventory, InventoryLine, Reservation, Stock, StockMovement,
-    SaleBatchAllocation, Showcase, WriteOffDocument, WriteOffDocumentItem
+    SaleBatchAllocation, Showcase, WriteOffDocument, WriteOffDocumentItem,
+    IncomingDocument, IncomingDocumentItem
 )
 
 
@@ -428,3 +429,77 @@ class WriteOffDocumentItemAdmin(admin.ModelAdmin):
     list_filter = ('reason', 'document__status', 'created_at')
     search_fields = ('product__name', 'document__document_number')
     raw_id_fields = ('product', 'document', 'reservation')
+
+
+# ===== INCOMING DOCUMENT (документы поступления) =====
+class IncomingDocumentItemInline(admin.TabularInline):
+    model = IncomingDocumentItem
+    extra = 0
+    fields = ('product', 'quantity', 'cost_price', 'notes')
+    raw_id_fields = ('product',)
+
+
+@admin.register(IncomingDocument)
+class IncomingDocumentAdmin(admin.ModelAdmin):
+    list_display = ('document_number', 'warehouse', 'status_display', 'receipt_type_display', 'date', 'items_count', 'total_quantity_display', 'created_by', 'created_at')
+    list_filter = ('status', 'warehouse', 'receipt_type', 'date', 'created_at')
+    search_fields = ('document_number', 'warehouse__name', 'supplier_name')
+    date_hierarchy = 'date'
+    readonly_fields = ('document_number', 'created_at', 'updated_at', 'confirmed_at', 'confirmed_by')
+    inlines = [IncomingDocumentItemInline]
+
+    fieldsets = (
+        ('Документ', {
+            'fields': ('document_number', 'warehouse', 'status', 'date', 'receipt_type', 'supplier_name', 'notes')
+        }),
+        ('Аудит', {
+            'fields': ('created_by', 'created_at', 'confirmed_by', 'confirmed_at', 'updated_at'),
+            'classes': ('collapse',)
+        }),
+    )
+
+    def status_display(self, obj):
+        colors = {
+            'draft': '#ff9900',
+            'confirmed': '#008000',
+            'cancelled': '#ff0000',
+        }
+        return format_html(
+            '<span style="color: {}; font-weight: bold;">{}</span>',
+            colors.get(obj.status, '#000000'),
+            obj.get_status_display()
+        )
+    status_display.short_description = 'Статус'
+
+    def receipt_type_display(self, obj):
+        colors = {
+            'supplier': '#0d6efd',
+            'inventory': '#0dcaf0',
+            'adjustment': '#198754',
+        }
+        return format_html(
+            '<span style="color: {}; font-weight: bold;">{}</span>',
+            colors.get(obj.receipt_type, '#6c757d'),
+            obj.get_receipt_type_display()
+        )
+    receipt_type_display.short_description = 'Тип поступления'
+
+    def items_count(self, obj):
+        return obj.items.count()
+    items_count.short_description = 'Позиций'
+
+    def total_quantity_display(self, obj):
+        return f"{obj.total_quantity} шт"
+    total_quantity_display.short_description = 'Всего'
+
+
+@admin.register(IncomingDocumentItem)
+class IncomingDocumentItemAdmin(admin.ModelAdmin):
+    list_display = ('document', 'product', 'quantity', 'cost_price', 'total_cost_display', 'created_at')
+    list_filter = ('document__status', 'document__receipt_type', 'created_at')
+    search_fields = ('product__name', 'document__document_number')
+    raw_id_fields = ('product', 'document')
+
+    def total_cost_display(self, obj):
+        return f"{obj.total_cost:.2f}"
+    total_cost_display.short_description = 'Сумма'