adding

apps/bizapps/admin.py

@@ -1,40 +1,82 @@
 from django.contrib import admin
 
-from .models import Appointment, Customer, LedgerEntry, Product, StockMovement
+from .models import (
+    Account,
+    Customer,
+    Invoice,
+    InvoiceItem,
+    LedgerEntry,
+    LedgerInstallment,
+    Product,
+    StockMovement,
+    Transaction,
+)
+
+
+@admin.register(Account)
+class AccountAdmin(admin.ModelAdmin):
+    list_display = ("code", "name", "level", "account_type", "parent", "is_system", "is_active")
+    list_filter = ("level", "account_type", "is_system", "is_active")
+    search_fields = ("code", "name", "user__phone")
+    autocomplete_fields = ["parent"]
 
 
 @admin.register(Customer)
 class CustomerAdmin(admin.ModelAdmin):
-    list_display = ("name", "phone", "user", "updated_at")
-    search_fields = ("name", "phone", "email", "user__phone")
+    list_display = ("name", "phone", "outstanding_balance", "total_purchases_count", "last_purchase_date")
+    search_fields = ("name", "phone", "user__phone")
+    readonly_fields = (
+        "total_purchases_count", "total_purchase_amount", "last_purchase_date", "outstanding_balance",
+    )
 
 
 @admin.register(LedgerEntry)
 class LedgerEntryAdmin(admin.ModelAdmin):
-    list_display = ("title", "entry_type", "amount", "entry_date", "user")
+    list_display = ("title", "entry_type", "category", "amount", "entry_date", "counterparty_name")
     list_filter = ("entry_type", "category")
-    search_fields = ("title", "user__phone")
+    search_fields = ("title", "counterparty_name", "counterparty_phone", "user__phone")
+
+
+@admin.register(LedgerInstallment)
+class LedgerInstallmentAdmin(admin.ModelAdmin):
+    list_display = ("ledger_entry", "amount", "paid_date", "reference")
+    search_fields = ("reference", "ledger_entry__title")
 
 
 @admin.register(Product)
 class ProductAdmin(admin.ModelAdmin):
-    list_display = ("name", "sku", "category", "quantity", "unit_price", "user")
+    list_display = ("name", "sku", "category", "quantity", "unit", "unit_price", "total_purchase_value")
     list_filter = ("category",)
     search_fields = ("name", "sku", "user__phone")
+    readonly_fields = ("total_purchase_value",)
 
 
 @admin.register(StockMovement)
 class StockMovementAdmin(admin.ModelAdmin):
-    list_display = ("product", "delta", "quantity_after", "created_at")
-    search_fields = ("product__name", "product__user__phone")
-    readonly_fields = ("product", "delta", "quantity_after", "note", "created_at")
-
-    def has_add_permission(self, request):
-        return False
+    list_display = ("product", "delta", "quantity_after", "note", "created_at")
+    search_fields = ("product__name",)
 
 
-@admin.register(Appointment)
-class AppointmentAdmin(admin.ModelAdmin):
-    list_display = ("customer_name", "title", "start_at", "status", "user")
-    list_filter = ("status",)
-    search_fields = ("customer_name", "customer_phone", "user__phone")
+class InvoiceItemInline(admin.TabularInline):
+    model = InvoiceItem
+    extra = 0
+
+
+@admin.register(Invoice)
+class InvoiceAdmin(admin.ModelAdmin):
+    list_display = (
+        "invoice_number", "buyer_name", "final_amount", "payment_type", "payment_status", "order_status",
+        "invoice_date",
+    )
+    list_filter = ("payment_type", "payment_status", "order_status")
+    search_fields = ("invoice_number", "buyer_name", "buyer_phone", "user__phone")
+    inlines = [InvoiceItemInline]
+
+
+@admin.register(Transaction)
+class TransactionAdmin(admin.ModelAdmin):
+    list_display = (
+        "transaction_number", "transaction_type", "debit_account", "credit_account", "amount", "transaction_date",
+    )
+    list_filter = ("transaction_type",)
+    search_fields = ("transaction_number", "description", "user__phone")