#!/usr/bin/env python
"""
Workflow test: Create a full configurable product with attributes and variants
"""
import os
import sys
import django

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myproject.settings')
django.setup()

from products.models.kits import (
    ConfigurableKitProduct,
    ConfigurableKitOption,
    ConfigurableKitProductAttribute,
    ConfigurableKitOptionAttribute,
    ProductKit
)
from django_tenants.utils import tenant_context
from tenants.models import Client
from django.db import transaction

try:
    client = Client.objects.get(schema_name='grach')
    print(f"Found tenant: {client.name}\n")
except Client.DoesNotExist:
    print("Tenant 'grach' not found")
    sys.exit(1)

with tenant_context(client):
    print("=" * 70)
    print("WORKFLOW TEST: Complete ConfigurableKitProduct Creation")
    print("=" * 70)

    # Step 1: Create ConfigurableKitProduct
    print("\n[1] Creating ConfigurableKitProduct...")
    with transaction.atomic():
        try:
            # Delete old test products
            ConfigurableKitProduct.objects.filter(name__icontains="workflow").delete()

            product = ConfigurableKitProduct.objects.create(
                name="Workflow Test Product",
                sku="WORKFLOW-TEST-001",
                description="Test product for workflow validation"
            )
            print(f"    OK: Created product: {product.name} (ID: {product.id})")
        except Exception as e:
            print(f"    ERROR: {e}")
            import traceback
            traceback.print_exc()
            sys.exit(1)

    # Step 2: Create attributes with values
    print("\n[2] Creating product attributes...")
    try:
        # Delete old attributes
        ConfigurableKitProductAttribute.objects.filter(parent=product).delete()

        attrs_data = [
            ("Dlina", ["50", "60", "70"]),
            ("Упаковка", ["BEZ", "V_UPAKOVKE"])
        ]

        created_attrs = {}
        for attr_name, values in attrs_data:
            print(f"    Creating attribute: {attr_name}")
            created_attrs[attr_name] = []

            for pos, value in enumerate(values):
                attr = ConfigurableKitProductAttribute.objects.create(
                    parent=product,
                    name=attr_name,
                    option=value,
                    position=pos,
                    visible=True
                )
                created_attrs[attr_name].append(attr)
                print(f"       - Created value: {value}")

        print(f"    OK: Created {len(created_attrs)} attribute(s)")
    except Exception as e:
        print(f"    ERROR: {e}")
        import traceback
        traceback.print_exc()
        sys.exit(1)

    # Step 3: Get or create ProductKits
    print("\n[3] Getting ProductKits for variants...")
    try:
        kits = ProductKit.objects.all()[:3]
        if kits.count() == 0:
            print("    WARNING: No ProductKit found in database")
            print("    INFO: Skipping variant creation (need ProductKits in DB)")
            print("\n    To complete testing:")
            print("    1. Create some ProductKit objects in admin")
            print("    2. Then run this script again")
        else:
            print(f"    OK: Found {kits.count()} ProductKit(s)")
            for kit in kits:
                print(f"       - {kit.name} (SKU: {kit.sku})")

            # Step 4: Create variants with attribute values
            print("\n[4] Creating ConfigurableKitOption variants...")
            try:
                # Delete old options
                ConfigurableKitOption.objects.filter(parent=product).delete()

                variant_configs = [
                    (kits[0], created_attrs["Dlina"][0], created_attrs["Упаковка"][0], True),  # 50, BEZ, default
                    (kits[1], created_attrs["Dlina"][1], created_attrs["Упаковка"][1], False),  # 60, V_UPAKOVKE
                    (kits[2], created_attrs["Dlina"][2], created_attrs["Упаковка"][0], False),  # 70, BEZ
                ]

                for kit, dlina_attr, upakovka_attr, is_default in variant_configs:
                    option = ConfigurableKitOption.objects.create(
                        parent=product,
                        kit=kit,
                        is_default=is_default
                    )
                    print(f"    Created variant {option.id} for kit: {kit.name}")

                    # Create M2M relationships
                    ConfigurableKitOptionAttribute.objects.create(
                        option=option,
                        attribute=dlina_attr
                    )
                    ConfigurableKitOptionAttribute.objects.create(
                        option=option,
                        attribute=upakovka_attr
                    )
                    print(f"       - Linked attributes: Dlina={dlina_attr.option}, Upakovka={upakovka_attr.option}")

                print(f"    OK: Created {len(variant_configs)} variant(s)")
            except Exception as e:
                print(f"    ERROR: {e}")
                import traceback
                traceback.print_exc()
                sys.exit(1)

            # Step 5: Verify data retrieval
            print("\n[5] Verifying variant data...")
            try:
                options = ConfigurableKitOption.objects.filter(parent=product)
                print(f"    Found {options.count()} variant(s)")

                for opt in options:
                    print(f"\n    Variant {opt.id}:")
                    print(f"       - Kit: {opt.kit.name}")
                    print(f"       - Default: {opt.is_default}")

                    # Get attributes through M2M
                    opt_attrs = opt.attributes_set.all()
                    print(f"       - Attributes ({opt_attrs.count()}):")
                    for opt_attr in opt_attrs:
                        print(f"         * {opt_attr.attribute.name} = {opt_attr.attribute.option}")

                print("\n    OK: All data retrieves correctly")
            except Exception as e:
                print(f"    ERROR: {e}")
                import traceback
                traceback.print_exc()
                sys.exit(1)
    except Exception as e:
        print(f"    ERROR: {e}")
        import traceback
        traceback.print_exc()
        sys.exit(1)

    print("\n" + "=" * 70)
    print("OK: WORKFLOW TEST COMPLETED SUCCESSFULLY!")
    print("=" * 70)