knowledge_base/src/tests/Unit/Models/DocumentTest.php

<?php

namespace Tests\Unit\Models;

use App\Models\Document;
use App\Models\DocumentTranslation;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\App;
use Tests\TestCase;

class DocumentTest extends TestCase
{
    use RefreshDatabase;

    public function test_title_accessor_returns_current_locale_translation(): void
    {
        $doc = Document::factory()->create(['default_locale' => 'en']);
        $doc->translations()->where('locale', 'en')->update(['title' => 'Hello']);
        DocumentTranslation::factory()->create([
            'document_id' => $doc->id,
            'locale' => 'ja',
            'title' => 'こんにちは',
        ]);

        App::setLocale('ja');
        $this->assertSame('こんにちは', $doc->fresh()->title);

        App::setLocale('en');
        $this->assertSame('Hello', $doc->fresh()->title);
    }

    public function test_title_accessor_falls_back_to_default_locale(): void
    {
        $doc = Document::factory()->create(['default_locale' => 'en']);
        $doc->translations()->where('locale', 'en')->update(['title' => 'Hello']);

        App::setLocale('ja');
        $this->assertSame('Hello', $doc->fresh()->title);
    }

    public function test_content_and_rendered_html_accessors_fall_back(): void
    {
        $doc = Document::factory()->create(['default_locale' => 'en']);
        $doc->translations()->where('locale', 'en')->update([
            'content' => 'English body',
            'rendered_html' => '<p>English body</p>',
        ]);

        App::setLocale('ja');
        $fresh = $doc->fresh();
        $this->assertSame('English body', $fresh->content);
        $this->assertSame('<p>English body</p>', $fresh->rendered_html);
    }

    public function test_is_fallback_returns_true_when_locale_missing(): void
    {
        $doc = Document::factory()->create(['default_locale' => 'en']);
        $this->assertTrue($doc->isFallback('ja'));
        $this->assertFalse($doc->isFallback('en'));
    }

    public function test_translation_for_returns_null_when_fallback_disabled(): void
    {
        $doc = Document::factory()->create(['default_locale' => 'en']);
        $this->assertNull($doc->translationFor('ja', fallback: false));
        $this->assertNotNull($doc->translationFor('ja', fallback: true));
    }

    public function test_available_locales_lists_existing_translations(): void
    {
        $doc = Document::factory()->create(['default_locale' => 'en']);
        DocumentTranslation::factory()->create(['document_id' => $doc->id, 'locale' => 'ja']);
        DocumentTranslation::factory()->create(['document_id' => $doc->id, 'locale' => 'fr']);

        $locales = $doc->fresh()->availableLocales();
        sort($locales);
        $this->assertSame(['en', 'fr', 'ja'], $locales);
    }

    public function test_sync_links_creates_outgoing_links_with_resolved_targets(): void
    {
        $target = Document::factory()->create(['default_locale' => 'en']);
        $target->translations()->where('locale', 'en')->update(['title' => 'Target']);

        $source = Document::factory()->create(['default_locale' => 'en']);
        $source->translations()->where('locale', 'en')->update([
            'content' => 'See [[Target]] for details.',
        ]);

        $source->fresh('translations')->syncLinks();

        $links = $source->fresh()->outgoingLinks;
        $this->assertCount(1, $links);
        $this->assertSame($target->id, $links->first()->target_document_id);
        $this->assertSame('Target', $links->first()->target_title);
    }

    public function test_sync_links_records_unresolved_links_with_null_target(): void
    {
        $source = Document::factory()->create();
        $source->translations()->first()->update([
            'content' => 'Goes to [[NoSuchPage]].',
        ]);

        $source->fresh('translations')->syncLinks();

        $links = $source->fresh()->outgoingLinks;
        $this->assertCount(1, $links);
        $this->assertNull($links->first()->target_document_id);
    }

    public function test_process_links_replaces_wiki_link_with_anchor_keeping_label(): void
    {
        $target = Document::factory()->create(['default_locale' => 'en', 'slug' => 'target-doc']);
        $target->translations()->where('locale', 'en')->update(['title' => 'Target']);
        \Illuminate\Support\Facades\App::setLocale('ja');
        \App\Models\DocumentTranslation::factory()->create([
            'document_id' => $target->id,
            'locale' => 'ja',
            'title' => 'ターゲット',
        ]);

        $source = Document::factory()->create();
        $source->translations()->first()->update([
            'rendered_html' => '<p>See [[Target]].</p>',
        ]);

        $html = $source->fresh()->processLinks();

        $this->assertStringContainsString('href="' . route('documents.show', 'target-doc') . '"', $html);
        $this->assertStringContainsString('>Target<', $html); // label preserved
        $this->assertStringContainsString('class="wiki-link"', $html);
    }

    public function test_process_links_marks_unresolved_links_as_new(): void
    {
        $source = Document::factory()->create();
        $source->translations()->first()->update([
            'rendered_html' => '<p>Click [[Ghost]].</p>',
        ]);

        $html = $source->fresh()->processLinks();
        $this->assertStringContainsString('wiki-link-new', $html);
    }
}