<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
declare(strict_types=1);

namespace Magento\Catalog\Test\Unit\Model\Layer\Filter;

use Magento\Catalog\Model\Category;
use Magento\Catalog\Model\Layer;
use Magento\Catalog\Model\Layer\Filter\DataProvider\Category as CategoryDataProvider;
use Magento\Catalog\Model\Layer\Filter\DataProvider\CategoryFactory;
use Magento\Catalog\Model\Layer\Filter\Item;
use Magento\Catalog\Model\Layer\Filter\Item\DataBuilder;
use Magento\Catalog\Model\Layer\Filter\ItemFactory;
use Magento\Catalog\Model\Layer\State;
use Magento\Catalog\Model\ResourceModel\Product\Collection as ProductCollectionResourceModel;
use Magento\Framework\App\RequestInterface;
use Magento\Framework\Escaper;
use Magento\Framework\TestFramework\Unit\Helper\ObjectManager as ObjectManagerHelper;
use PHPUnit\Framework\MockObject\MockObject;
use PHPUnit\Framework\TestCase;

/**
 * Test for \Magento\Catalog\Model\Layer\Filter\Category
 *
 * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
 */
class CategoryTest extends TestCase
{
    /**
     * @var DataBuilder
     */
    private $itemDataBuilder;

    /**
     * @var Category|MockObject
     */
    private $category;

    /**
     * @var \Magento\CatalogSearch\Model\ResourceModel\Fulltext\Collection|MockObject
     */
    private $collection;

    /**
     * @var Layer|MockObject
     */
    private $layer;

    /**
     * @var CategoryDataProvider|MockObject
     */
    private $dataProvider;

    /**
     * @var \Magento\Catalog\Model\Layer\Filter\Category
     */
    private $target;

    /**
     * @var RequestInterface|MockObject
     */
    private $request;

    /**
     * @var  ItemFactory|MockObject
     */
    private $filterItemFactory;

    /**
     * @var  State|MockObject
     */
    private $state;

    /**
     * @inheritDoc
     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
     */
    protected function setUp(): void
    {
        $this->request = $this->getMockBuilder(RequestInterface::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['getParam'])
            ->getMockForAbstractClass();

        $dataProviderFactory = $this->getMockBuilder(CategoryFactory::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['create'])->getMock();

        $this->dataProvider = $this->getMockBuilder(CategoryDataProvider::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['setCategoryId', 'getCategory'])
            ->getMock();

        $dataProviderFactory->expects($this->once())
            ->method('create')
            ->willReturn($this->dataProvider);

        $this->category = $this->getMockBuilder(Category::class)
            ->disableOriginalConstructor()
            ->onlyMethods(
                [
                    'getId',
                    'getChildrenCategories',
                    'getIsActive'
                ]
            )->getMock();

        $this->dataProvider
            ->method('getCategory')
            ->willReturn($this->category);

        $this->layer = $this->getMockBuilder(Layer::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['getState', 'getProductCollection'])
            ->getMock();

        $this->state = $this->getMockBuilder(State::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['addFilter'])
            ->getMock();
        $this->layer->expects($this->any())
            ->method('getState')
            ->willReturn($this->state);

        $this->collection = $this->getMockBuilder(ProductCollectionResourceModel::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['addCategoryFilter', 'addCountToCategories'])
            ->addMethods(['getFacetedData'])
            ->getMock();

        $this->layer->expects($this->any())
            ->method('getProductCollection')
            ->willReturn($this->collection);

        $this->itemDataBuilder = $this->getMockBuilder(DataBuilder::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['addItemData', 'build'])
            ->getMock();

        $this->filterItemFactory = $this->getMockBuilder(ItemFactory::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['create'])->getMock();

        $filterItem = $this->getMockBuilder(Item::class)
            ->disableOriginalConstructor()
            ->addMethods(
                [
                    'setFilter',
                    'setLabel',
                    'setValue',
                    'setCount'
                ]
            )->getMock();
        $filterItem->expects($this->any())
            ->method($this->anything())->willReturnSelf();
        $this->filterItemFactory->expects($this->any())
            ->method('create')
            ->willReturn($filterItem);

        $escaper = $this->getMockBuilder(Escaper::class)
            ->disableOriginalConstructor()
            ->onlyMethods(['escapeHtml'])
            ->getMock();
        $escaper->expects($this->any())
            ->method('escapeHtml')
            ->willReturnArgument(0);

        $objectManagerHelper = new ObjectManagerHelper($this);
        $this->target = $objectManagerHelper->getObject(
            \Magento\Catalog\Model\Layer\Filter\Category::class,
            [
                'categoryDataProviderFactory' => $dataProviderFactory,
                'layer' => $this->layer,
                'itemDataBuilder' => $this->itemDataBuilder,
                'filterItemFactory' => $this->filterItemFactory,
                'escaper' => $escaper
            ]
        );
    }

    /**
     * @param $requestValue
     * @param $idValue
     *
     * @return void
     * @dataProvider applyWithEmptyRequestDataProvider
     */
    public function testApplyWithEmptyRequest($requestValue, $idValue): void
    {
        $requestField = 'test_request_var';
        $idField = 'id';

        $this->target->setRequestVar($requestField);

        $this->request
            ->method('getParam')
            ->with($requestField)
            ->willReturnCallback(
                function ($field) use ($requestField, $idField, $requestValue, $idValue) {
                    switch ($field) {
                        case $requestField:
                            return $requestValue;
                        case $idField:
                            return $idValue;
                    }
                }
            );

        $result = $this->target->apply($this->request);
        $this->assertSame($this->target, $result);
    }

    /**
     * @return array
     */
    public static function applyWithEmptyRequestDataProvider(): array
    {
        return [
            [
                'requestValue' => null,
                'id' => 0
            ],
            [
                'requestValue' => 0,
                'id' => false
            ],
            [
                'requestValue' => 0,
                'id' => null
            ]
        ];
    }

    /**
     * @return void
     */
    public function testApply(): void
    {
        $categoryId = 123;
        $requestVar = 'test_request_var';

        $this->target->setRequestVar($requestVar);
        $this->request->expects($this->any())
            ->method('getParam')
            ->willReturnCallback(
                function ($field) use ($requestVar, $categoryId) {
                    $this->assertContains($field, [$requestVar, 'id']);

                    return $categoryId;
                }
            );

        $this->dataProvider->expects($this->once())
            ->method('setCategoryId')
            ->with($categoryId)->willReturnSelf();

        $this->category->expects($this->once())
            ->method('getId')
            ->willReturn($categoryId);

        $this->collection->expects($this->once())
            ->method('addCategoryFilter')
            ->with($this->category)->willReturnSelf();

        $this->target->apply($this->request);
    }

    /**
     * @return void
     */
    public function testGetItems(): void
    {
        $this->category->expects($this->any())
            ->method('getIsActive')
            ->willReturn(true);

        $category1 = $this->getMockBuilder(Category::class)
            ->disableOriginalConstructor()
            ->onlyMethods(
                [
                    'getId',
                    'getName',
                    'getIsActive',
                    'getProductCount'
                ]
            )
            ->getMock();
        $category1->expects($this->atLeastOnce())
            ->method('getId')
            ->willReturn(120);
        $category1->expects($this->once())
            ->method('getName')
            ->willReturn('Category 1');
        $category1->expects($this->once())
            ->method('getIsActive')
            ->willReturn(true);
        $category1->expects($this->any())
            ->method('getProductCount')
            ->willReturn(10);

        $category2 = $this->getMockBuilder(Category::class)
            ->disableOriginalConstructor()
            ->onlyMethods(
                [
                    'getId',
                    'getName',
                    'getIsActive',
                    'getProductCount'
                ]
            )
            ->getMock();
        $category2->expects($this->atLeastOnce())
            ->method('getId')
            ->willReturn(5641);
        $category2->expects($this->once())
            ->method('getName')
            ->willReturn('Category 2');
        $category2->expects($this->once())
            ->method('getIsActive')
            ->willReturn(true);
        $category2->expects($this->any())
            ->method('getProductCount')
            ->willReturn(45);
        $categories = [
            $category1,
            $category2,
        ];
        $this->category->expects($this->once())
            ->method('getChildrenCategories')
            ->willReturn($categories);

        $builtData = [
            [
                'label' => 'Category 1',
                'value' => 120,
                'count' => 10
            ],
            [
                'label' => 'Category 2',
                'value' => 5641,
                'count' => 45
            ]
        ];

        $this->itemDataBuilder
            ->method('addItemData')
            ->willReturnCallback(function (...$args) {
                static $index = 0;
                $expectedArgs = [
                    ['Category 1', 120, 10],
                    ['Category 2', 5641, 45]
                ];
                $returnValue = $this->itemDataBuilder;
                $index++;
                return $args === $expectedArgs[$index - 1] ? $returnValue : null;
            });
        $this->itemDataBuilder->expects($this->once())
            ->method('build')
            ->willReturn($builtData);

        $this->target->getItems();
    }
}
