import importlib
from pathlib import Path

import pytest
from fastapi import HTTPException

products_router = importlib.import_module("app.products.backend.router")


def test_normalize_apigw_product_accepts_nested_aliases():
    normalized = products_router._normalize_apigw_product(
        {
            "product": {
                "productName": "Managed switch",
                "part_number": "SW-24",
                "barcode": "570000000001",
                "net_price": 499.95,
                "legacy_category": "Netværk",
                "supplier": {"name": "Grossist", "code": "grossist"},
            }
        }
    )

    assert normalized["product_name"] == "Managed switch"
    assert normalized["sku"] == "SW-24"
    assert normalized["ean"] == "570000000001"
    assert normalized["price"] == 499.95
    assert normalized["category"] == "Netværk"
    assert normalized["supplier_name"] == "Grossist"
    assert normalized["supplier_code"] == "grossist"


def test_normalize_apigw_product_builds_name_from_item_code():
    normalized = products_router._normalize_apigw_product(
        {"sku": "ABC-123", "supplier_name": "DCS"}
    )

    assert normalized["product_name"] == "DCS · ABC-123"


def test_normalize_apigw_product_does_not_unwrap_a_real_product_data_field():
    normalized = products_router._normalize_apigw_product(
        {"product_name": "Router", "sku": "RTR-1", "data": {"irrelevant": True}}
    )

    assert normalized["product_name"] == "Router"
    assert normalized["sku"] == "RTR-1"


def test_import_apigw_product_rejects_only_truly_unidentifiable_item():
    with pytest.raises(HTTPException) as exc_info:
        products_router._import_apigw_product_to_local({"product": {"id": 123}})

    assert exc_info.value.status_code == 400
    assert "mangler både navn og varenummer" in exc_info.value.detail


def test_products_page_handles_gateway_errors_and_prevents_double_import():
    template = Path("app/products/frontend/list.html").read_text()

    assert "const data = await res.json().catch(() => ({}));" in template
    assert "escapeHtml(e.message || 'Fejl ved søgning')" in template
    assert "async function importGatewayProduct(product, button = null)" in template
    assert "button.disabled = true;" in template
    assert "importGatewayProduct(product, button);" in template
    assert "Angiv mindst ét søgekriterium" in template
    assert "function safeGatewayUrl(value)" in template


def test_gateway_catalog_search_is_read_only_until_explicit_import():
    template = Path("app/products/frontend/list.html").read_text()

    assert "Søg hos alle grossister" in template
    assert "Søgningen opretter ikke varer i Hub'en" in template
    assert "function searchGatewayCatalogFromLocalQuery()" in template
    assert "openGatewaySearchModal(query, Boolean(query));" in template
    assert "params.append('per_page', '100');" in template
    assert "Importér til Hub" in template
    assert "auto_create: 'true'" not in template


def test_gateway_catalog_results_show_supplier_and_product_details():
    template = Path("app/products/frontend/list.html").read_text()

    assert "function renderGatewayProductCard(product, tokens)" in template
    assert "gatewayInfoItem('Grossist', supplier)" in template
    assert "gatewayInfoItem('Varenummer', product.sku)" in template
    assert "gatewayInfoItem('EAN / GTIN', product.ean)" in template
    assert "gatewayInfoItem('Producent', product.manufacturer)" in template
    assert "gatewayInfoItem('Kategori', product.category)" in template
    assert "gatewayInfoItem('Lager', stockParts.join(' · '))" in template
    assert "formatGatewayCurrency(product.price, product.currency)" in template
    assert "gateway-catalog-dialog" in template
    assert "gateway-search-panel" in template
    assert "gateway-results-grid" in template