<?php

declare(strict_types=1);

use App\Domain\Cms\Entities\Content;
use App\Domain\Cms\Enums\ContentStatus;
use App\Domain\Cms\Exceptions\ContentNotFoundException;
use App\Domain\Cms\Exceptions\DuplicateSlugException;
use App\Domain\Cms\Exceptions\InvalidContentStatusException;
use App\Domain\Cms\Repositories\ContentRepository;
use App\Domain\Cms\Services\BlockTypeRegistry;
use App\Domain\Cms\Services\BlockValidator;
use App\Domain\Cms\Services\ContentService;
use App\Domain\Cms\Services\SlugGenerator;
use App\Domain\Cms\ValueObjects\BlockData;
use App\Domain\Cms\ValueObjects\BlockId;
use App\Domain\Cms\ValueObjects\BlockType;
use App\Domain\Cms\ValueObjects\ContentBlock;
use App\Domain\Cms\ValueObjects\ContentBlocks;
use App\Domain\Cms\ValueObjects\ContentId;
use App\Domain\Cms\ValueObjects\ContentSlug;
use App\Domain\Cms\ValueObjects\ContentTypeId;
use App\Domain\Cms\ValueObjects\Locale;
use App\Framework\Core\ValueObjects\Timestamp;
use App\Framework\DateTime\SystemClock;
use Tests\Support\CmsTestHelpers;

describe('ContentService', function () {
    beforeEach(function () {
        $this->clock = new SystemClock();
        $this->repository = Mockery::mock(ContentRepository::class);
        $this->blockTypeRegistry = new BlockTypeRegistry();
        $this->blockValidator = new BlockValidator($this->blockTypeRegistry);
        // Use real SlugGenerator instance with mocked repository
        $this->slugGenerator = new SlugGenerator($this->repository);
        $this->service = new ContentService(
            $this->repository,
            $this->blockValidator,
            $this->slugGenerator,
            $this->clock
        );
    });

    it('creates content with provided slug', function () {
        $contentTypeId = ContentTypeId::fromString('page');
        $slug = ContentSlug::fromString('my-page');
        $blocks = ContentBlocks::fromArray([
            [
                'id' => 'hero-1',
                'type' => 'hero',
                'data' => ['title' => 'Hero Title'],
            ],
        ]);

        $this->repository->shouldReceive('existsSlug')
            ->once()
            ->with($slug)
            ->andReturn(false);

        $this->repository->shouldReceive('save')
            ->once()
            ->andReturnNull();

        $content = $this->service->create(
            contentTypeId: $contentTypeId,
            title: 'My Page',
            blocks: $blocks,
            defaultLocale: Locale::english(),
            slug: $slug
        );

        expect($content)->toBeInstanceOf(Content::class);
        expect($content->slug->equals($slug))->toBeTrue();
        expect($content->title)->toBe('My Page');
    });

    it('generates slug when not provided', function () {
        $contentTypeId = ContentTypeId::fromString('page');
        $blocks = ContentBlocks::fromArray([
            [
                'id' => 'hero-1',
                'type' => 'hero',
                'data' => ['title' => 'Hero Title'],
            ],
        ]);

        // SlugGenerator will generate 'my-page' from 'My Page'
        // Use Mockery::on() to match ContentSlug objects by their string value
        $this->repository->shouldReceive('existsSlug')
            ->atLeast()->once()
            ->with(Mockery::on(function ($slug) {
                return $slug instanceof ContentSlug && $slug->toString() === 'my-page';
            }))
            ->andReturn(false);

        $this->repository->shouldReceive('save')
            ->once()
            ->andReturnNull();

        $content = $this->service->create(
            contentTypeId: $contentTypeId,
            title: 'My Page',
            blocks: $blocks,
            defaultLocale: Locale::english()
        );

        expect($content->slug->toString())->toBe('my-page');
    });

    it('throws exception when slug already exists', function () {
        $contentTypeId = ContentTypeId::fromString('page');
        $slug = ContentSlug::fromString('existing-slug');
        $blocks = ContentBlocks::fromArray([
            [
                'id' => 'hero-1',
                'type' => 'hero',
                'data' => ['title' => 'Hero Title'],
            ],
        ]);

        $this->repository->shouldReceive('existsSlug')
            ->once()
            ->with($slug)
            ->andReturn(true);

        expect(fn () => $this->service->create(
            contentTypeId: $contentTypeId,
            title: 'My Page',
            blocks: $blocks,
            defaultLocale: Locale::english(),
            slug: $slug
        ))->toThrow(DuplicateSlugException::class);
    });

    it('finds content by id', function () {
        $contentId = ContentId::generate($this->clock);
        $content = CmsTestHelpers::createContent($this->clock, id: $contentId);

        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn($content);

        $found = $this->service->findById($contentId);

        expect($found)->toBe($content);
    });

    it('throws exception when content not found by id', function () {
        $contentId = ContentId::generate($this->clock);

        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn(null);

        expect(fn () => $this->service->findById($contentId))
            ->toThrow(ContentNotFoundException::class);
    });

    it('finds content by slug', function () {
        $slug = ContentSlug::fromString('my-page');
        $content = CmsTestHelpers::createContent($this->clock);

        $this->repository->shouldReceive('findBySlug')
            ->once()
            ->with($slug)
            ->andReturn($content);

        $found = $this->service->findBySlug($slug);

        expect($found)->toBe($content);
    });

    it('updates content title', function () {
        $contentId = ContentId::generate($this->clock);
        $content = CmsTestHelpers::createContent($this->clock, id: $contentId);

        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn($content);

        $this->repository->shouldReceive('save')
            ->once()
            ->andReturnNull();

        $updated = $this->service->updateTitle($contentId, 'New Title');

        expect($updated->title)->toBe('New Title');
    });

    it('updates content slug', function () {
        $contentId = ContentId::generate($this->clock);
        $content = CmsTestHelpers::createContent($this->clock, id: $contentId);
        $newSlug = ContentSlug::fromString('new-slug');

        // updateSlug calls findById once (line 107) and findBySlug once (line 106)
        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn($content);

        $this->repository->shouldReceive('findBySlug')
            ->once()
            ->with($newSlug)
            ->andReturn(null);

        $this->repository->shouldReceive('save')
            ->once()
            ->andReturnNull();

        $updated = $this->service->updateSlug($contentId, $newSlug);

        expect($updated->slug->equals($newSlug))->toBeTrue();
    });

    it('publishes content', function () {
        $contentId = ContentId::generate($this->clock);
        $content = CmsTestHelpers::createContent($this->clock, id: $contentId);

        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn($content);

        $this->repository->shouldReceive('save')
            ->once()
            ->andReturnNull();

        $published = $this->service->publish($contentId);

        expect($published->status)->toBe(ContentStatus::PUBLISHED);
    });

    it('unpublishes content', function () {
        $contentId = ContentId::generate($this->clock);
        $content = CmsTestHelpers::createContent($this->clock, id: $contentId);
        $publishedContent = $content->withStatus(ContentStatus::PUBLISHED);

        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn($publishedContent);

        $this->repository->shouldReceive('save')
            ->once()
            ->andReturnNull();

        $unpublished = $this->service->unpublish($contentId);

        expect($unpublished->status)->toBe(ContentStatus::DRAFT);
    });

    it('deletes content', function () {
        $contentId = ContentId::generate($this->clock);
        $content = CmsTestHelpers::createContent($this->clock, id: $contentId);

        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn($content);

        $this->repository->shouldReceive('delete')
            ->once()
            ->with($contentId)
            ->andReturnNull();

        $this->service->delete($contentId);
    });

    it('updates content blocks', function () {
        $contentId = ContentId::generate($this->clock);
        $content = CmsTestHelpers::createContent($this->clock, id: $contentId);
        $newBlocks = ContentBlocks::fromArray([
            [
                'id' => 'text-1',
                'type' => 'text',
                'data' => ['content' => 'New content'],
            ],
        ]);

        // BlockValidator is real instance, no need to mock

        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn($content);

        $this->repository->shouldReceive('save')
            ->once()
            ->andReturnNull();

        $updated = $this->service->updateBlocks($contentId, $newBlocks);

        expect($updated->blocks->count())->toBe(1);
    });

    it('updates content metadata', function () {
        $contentId = ContentId::generate($this->clock);
        $content = CmsTestHelpers::createContent($this->clock, id: $contentId);
        $metaData = BlockData::fromArray(['seo_title' => 'SEO Title']);

        $this->repository->shouldReceive('findById')
            ->once()
            ->with($contentId)
            ->andReturn($content);

        $this->repository->shouldReceive('save')
            ->once()
            ->andReturnNull();

        $updated = $this->service->updateMetaData($contentId, $metaData);

        expect($updated->metaData)->not->toBeNull();
        expect($updated->metaData->get('seo_title'))->toBe('SEO Title');
    });
});