# Copyright 2025 Criptomart
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)

"""
Test suite for product discovery logic in website_sale_aplicoop.

The discovery mechanism uses 3 sources:
1. product_ids: Directly linked products
2. category_ids: Products from linked categories (recursive)
3. supplier_ids: Products from linked suppliers

Coverage:
- Correct union of all 3 sources (no duplicates)
- Deep category hierarchies (nested categories)
- Empty sources (empty categories/suppliers)
- Product filters (is_published, sale_ok)
- Ordering and deduplication
"""

from datetime import datetime
from datetime import timedelta

from odoo.tests.common import TransactionCase


class TestProductDiscoveryUnion(TransactionCase):
    """Test that product discovery returns correct union of 3 sources."""

    def setUp(self):
        super().setUp()
        self.group = self.env["res.partner"].create(
            {
                "name": "Test Group",
                "is_company": True,
            }
        )

        # Create a supplier
        self.supplier = self.env["res.partner"].create(
            {
                "name": "Test Supplier",
                "is_supplier": True,
            }
        )

        # Create categories
        self.category1 = self.env["product.category"].create(
            {
                "name": "Category 1",
            }
        )

        self.category2 = self.env["product.category"].create(
            {
                "name": "Category 2",
            }
        )

        # Create products
        # Direct product
        self.direct_product = self.env["product.product"].create(
            {
                "name": "Direct Product",
                "type": "consu",
                "list_price": 10.0,
                "is_published": True,
                "sale_ok": True,
            }
        )

        # Category 1 product
        self.cat1_product = self.env["product.product"].create(
            {
                "name": "Category 1 Product",
                "type": "consu",
                "list_price": 20.0,
                "categ_id": self.category1.id,
                "is_published": True,
                "sale_ok": True,
            }
        )

        # Category 2 product
        self.cat2_product = self.env["product.product"].create(
            {
                "name": "Category 2 Product",
                "type": "consu",
                "list_price": 30.0,
                "categ_id": self.category2.id,
                "is_published": True,
                "sale_ok": True,
            }
        )

        # Supplier product
        self.supplier_product = self.env["product.product"].create(
            {
                "name": "Supplier Product",
                "type": "consu",
                "list_price": 40.0,
                "categ_id": self.category1.id,  # Also in category
                "seller_ids": [
                    (
                        0,
                        0,
                        {
                            "partner_id": self.supplier.id,
                            "product_name": "Supplier Product",
                        },
                    )
                ],
                "is_published": True,
                "sale_ok": True,
            }
        )

        start_date = datetime.now().date()
        self.group_order = self.env["group.order"].create(
            {
                "name": "Test Order",
                "group_ids": [(6, 0, [self.group.id])],
                "type": "regular",
                "start_date": start_date,
                "end_date": start_date + timedelta(days=7),
                "period": "weekly",
                "pickup_day": "3",
                "cutoff_day": "0",
            }
        )

    def test_discovery_from_direct_products(self):
        """Test discovery returns directly linked products."""
        self.group_order.product_ids = [(4, self.direct_product.id)]

        discovered = self.group_order.product_ids
        self.assertIn(self.direct_product, discovered)

    def test_discovery_from_categories(self):
        """Test discovery includes products from linked categories."""
        self.group_order.category_ids = [(4, self.category1.id)]

        # Computed placeholder to ensure discovery logic is exercised during test setup
        _ = self.group_order.product_ids
        # Should include cat1_product and supplier_product (both in category1)
        # Note: depends on how discovery is computed

    def test_discovery_from_suppliers(self):
        """Test discovery includes products from linked suppliers."""
        self.group_order.supplier_ids = [(4, self.supplier.id)]

        # Should include supplier_product
        # Note: depends on how supplier link is implemented

    def test_discovery_union_no_duplicates(self):
        """Test that union doesn't include same product twice."""
        # Add supplier_product via:
        # 1. Direct link
        # 2. Category link (cat1)
        # 3. Supplier link

        self.group_order.product_ids = [(4, self.supplier_product.id)]
        self.group_order.category_ids = [(4, self.category1.id)]
        self.group_order.supplier_ids = [(4, self.supplier.id)]

        discovered = self.group_order.product_ids

        # Count occurrences of supplier_product
        count = sum(1 for p in discovered if p == self.supplier_product)
        # Should appear only once
        self.assertEqual(count, 1)

    def test_discovery_filters_unpublished(self):
        """Test that unpublished products are excluded from discovery."""
        unpublished = self.env["product.product"].create(
            {
                "name": "Unpublished Product",
                "type": "consu",
                "list_price": 50.0,
                "categ_id": self.category1.id,
                "is_published": False,
                "sale_ok": True,
            }
        )

        self.group_order.category_ids = [(4, self.category1.id)]
        discovered = self.group_order.product_ids

        # Unpublished should not be in discovered
        self.assertNotIn(unpublished, discovered)

    def test_discovery_filters_not_for_sale(self):
        """Test that non-sellable products are excluded."""
        not_for_sale = self.env["product.product"].create(
            {
                "name": "Not For Sale",
                "type": "consu",
                "list_price": 60.0,
                "categ_id": self.category1.id,
                "is_published": True,
                "sale_ok": False,
            }
        )

        self.group_order.category_ids = [(4, self.category1.id)]
        discovered = self.group_order.product_ids

        # Not for sale should not be in discovered
        self.assertNotIn(not_for_sale, discovered)


class TestDeepCategoryHierarchies(TransactionCase):
    """Test product discovery with nested category structures."""

    def setUp(self):
        super().setUp()
        self.group = self.env["res.partner"].create(
            {
                "name": "Test Group",
                "is_company": True,
            }
        )

        # Create nested category structure:
        # Root -> L1 -> L2 -> L3 -> L4
        self.cat_l1 = self.env["product.category"].create(
            {
                "name": "Level 1",
            }
        )

        self.cat_l2 = self.env["product.category"].create(
            {
                "name": "Level 2",
                "parent_id": self.cat_l1.id,
            }
        )

        self.cat_l3 = self.env["product.category"].create(
            {
                "name": "Level 3",
                "parent_id": self.cat_l2.id,
            }
        )

        self.cat_l4 = self.env["product.category"].create(
            {
                "name": "Level 4",
                "parent_id": self.cat_l3.id,
            }
        )

        self.cat_l5 = self.env["product.category"].create(
            {
                "name": "Level 5",
                "parent_id": self.cat_l4.id,
            }
        )

        # Create products at each level
        self.product_l2 = self.env["product.product"].create(
            {
                "name": "Product L2",
                "type": "consu",
                "list_price": 10.0,
                "categ_id": self.cat_l2.id,
                "is_published": True,
                "sale_ok": True,
            }
        )

        self.product_l4 = self.env["product.product"].create(
            {
                "name": "Product L4",
                "type": "consu",
                "list_price": 20.0,
                "categ_id": self.cat_l4.id,
                "is_published": True,
                "sale_ok": True,
            }
        )

        self.product_l5 = self.env["product.product"].create(
            {
                "name": "Product L5",
                "type": "consu",
                "list_price": 30.0,
                "categ_id": self.cat_l5.id,
                "is_published": True,
                "sale_ok": True,
            }
        )

        start_date = datetime.now().date()
        self.group_order = self.env["group.order"].create(
            {
                "name": "Test Order",
                "group_ids": [(6, 0, [self.group.id])],
                "type": "regular",
                "start_date": start_date,
                "end_date": start_date + timedelta(days=7),
                "period": "weekly",
                "pickup_day": "3",
                "cutoff_day": "0",
            }
        )

    def test_discovery_root_category_includes_all_descendants(self):
        """Test that linking root category discovers all nested products."""
        self.group_order.category_ids = [(4, self.cat_l1.id)]

        discovered = self.group_order.product_ids

        # Should include products from L2, L4, L5 (all descendants)
        self.assertIn(self.product_l2, discovered)
        self.assertIn(self.product_l4, discovered)
        self.assertIn(self.product_l5, discovered)

    def test_discovery_mid_level_category_includes_descendants(self):
        """Test discovery from middle of hierarchy."""
        self.group_order.category_ids = [(4, self.cat_l3.id)]

        discovered = self.group_order.product_ids

        # Should include L4 and L5 (descendants of L3)
        self.assertIn(self.product_l4, discovered)
        self.assertIn(self.product_l5, discovered)

        # Should not include L2 (ancestor)
        self.assertNotIn(self.product_l2, discovered)

    def test_discovery_leaf_category_only_own_products(self):
        """Test discovery from leaf (deepest) category."""
        self.group_order.category_ids = [(4, self.cat_l5.id)]

        discovered = self.group_order.product_ids

        # Should only include products directly in L5
        self.assertIn(self.product_l5, discovered)
        self.assertNotIn(self.product_l4, discovered)

    def test_discovery_circular_category_reference(self):
        """Test handling of circular category references (edge case)."""
        # Create circular reference (if allowed): L1 -> L2 -> L1
        # This should be prevented by Odoo constraints
        # or handled gracefully in discovery logic

        # Attempt to create circular ref may fail
        try:
            self.cat_l1.parent_id = self.cat_l5.id  # Creates loop
        except Exception as exc:
            # Expected: Odoo should prevent circular refs. Log for visibility.
            import logging

            logging.getLogger(__name__).info(
                "Expected exception creating circular category: %s", str(exc)
            )


class TestEmptySourcesDiscovery(TransactionCase):
    """Test discovery behavior with empty/null sources."""

    def setUp(self):
        super().setUp()
        self.group = self.env["res.partner"].create(
            {
                "name": "Test Group",
                "is_company": True,
            }
        )

        self.category = self.env["product.category"].create(
            {
                "name": "Empty Category",
            }
        )
        # No products in this category

        self.supplier = self.env["res.partner"].create(
            {
                "name": "Supplier No Products",
                "is_supplier": True,
            }
        )
        # No products from this supplier

        start_date = datetime.now().date()
        self.group_order = self.env["group.order"].create(
            {
                "name": "Test Order",
                "group_ids": [(6, 0, [self.group.id])],
                "type": "regular",
                "start_date": start_date,
                "end_date": start_date + timedelta(days=7),
                "period": "weekly",
                "pickup_day": "3",
                "cutoff_day": "0",
            }
        )

    def test_discovery_empty_category(self):
        """Test discovery from empty category."""
        self.group_order.category_ids = [(4, self.category.id)]

        discovered = self.group_order.product_ids

        # Should return empty list
        self.assertEqual(len(discovered), 0)

    def test_discovery_empty_supplier(self):
        """Test discovery from supplier with no products."""
        self.group_order.supplier_ids = [(4, self.supplier.id)]

        discovered = self.group_order.product_ids

        # Should return empty list
        self.assertEqual(len(discovered), 0)

    def test_discovery_all_sources_empty(self):
        """Test when all 3 sources are empty."""
        # No direct products, empty category, empty supplier
        self.group_order.product_ids = [(6, 0, [])]
        self.group_order.category_ids = [(4, self.category.id)]
        self.group_order.supplier_ids = [(4, self.supplier.id)]

        discovered = self.group_order.product_ids

        # Should return empty
        self.assertEqual(len(discovered), 0)


class TestProductDiscoveryOrdering(TransactionCase):
    """Test that discovered products are returned in consistent order."""

    def setUp(self):
        super().setUp()
        self.group = self.env["res.partner"].create(
            {
                "name": "Test Group",
                "is_company": True,
            }
        )

        self.category = self.env["product.category"].create(
            {
                "name": "Test Category",
            }
        )

        # Create products with specific names
        self.products = []
        for i in range(5):
            product = self.env["product.product"].create(
                {
                    "name": f"Product {chr(65 + i)}",  # A, B, C, D, E
                    "type": "consu",
                    "list_price": (i + 1) * 10.0,
                    "categ_id": self.category.id,
                    "is_published": True,
                    "sale_ok": True,
                }
            )
            self.products.append(product)

        start_date = datetime.now().date()
        self.group_order = self.env["group.order"].create(
            {
                "name": "Test Order",
                "group_ids": [(6, 0, [self.group.id])],
                "type": "regular",
                "start_date": start_date,
                "end_date": start_date + timedelta(days=7),
                "period": "weekly",
                "pickup_day": "3",
                "cutoff_day": "0",
            }
        )

    def test_discovery_consistent_ordering(self):
        """Test that repeated calls return same order."""
        self.group_order.category_ids = [(4, self.category.id)]

        discovered1 = list(self.group_order.product_ids)
        discovered2 = list(self.group_order.product_ids)

        # Order should be consistent
        self.assertEqual([p.id for p in discovered1], [p.id for p in discovered2])

    def test_discovery_alphabetical_or_price_order(self):
        """Test that products are ordered predictably."""
        self.group_order.category_ids = [(4, self.category.id)]

        discovered = list(self.group_order.product_ids)

        # Should be in some consistent order (name, price, ID, etc)
        # Verify they're the same products, regardless of order
        self.assertEqual(len(discovered), 5)
        discovered_ids = {p.id for p in discovered}
        expected_ids = {p.id for p in self.products}
        self.assertEqual(discovered_ids, expected_ids)