<?php

namespace Tests\Feature\Cms;

use App\Models\Document;
use App\Models\DocumentCategory;
use App\Models\DocumentVersion;
use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Str;
use Tests\TestCase;

class PublicDocumentApiTest extends TestCase
{
    use RefreshDatabase;

    public function test_public_documents_index_only_returns_active_public_documents(): void
    {
        $user = User::factory()->create();
        $category = DocumentCategory::factory()->create(['slug' => 'legal-docs', 'name' => '法規文件']);

        $visible = $this->createDocumentWithVersion($user, $category, [
            'title' => '可見文件',
            'access_level' => 'public',
            'status' => 'active',
        ]);

        $this->createDocumentWithVersion($user, $category, [
            'title' => '非公開文件',
            'access_level' => 'members',
            'status' => 'active',
        ]);

        $this->createDocumentWithVersion($user, $category, [
            'title' => '封存文件',
            'access_level' => 'public',
            'status' => 'archived',
        ]);

        $this->getJson('/api/v1/public-documents?per_page=50')
            ->assertOk()
            ->assertJsonCount(1, 'data')
            ->assertJsonPath('data.0.slug', $visible->public_uuid)
            ->assertJsonPath('data.0.current_version.version_number', '1.0')
            ->assertJsonPath('data.0.category.slug', 'legal-docs')
            ->assertJsonMissing(['title' => '非公開文件'])
            ->assertJsonMissing(['title' => '封存文件']);
    }

    public function test_public_documents_show_returns_versions_and_related_documents(): void
    {
        $user = User::factory()->create();
        $category = DocumentCategory::factory()->create(['slug' => 'governance', 'name' => '治理文件']);

        $document = $this->createDocumentWithVersion($user, $category, [
            'title' => '主文件',
            'description' => '主文件描述',
            'access_level' => 'public',
            'status' => 'active',
        ]);

        $secondVersion = DocumentVersion::create([
            'document_id' => $document->id,
            'version_number' => '1.1',
            'version_notes' => '更新內容',
            'is_current' => true,
            'file_path' => 'documents/test-main-v1_1.pdf',
            'original_filename' => 'test-main-v1_1.pdf',
            'mime_type' => 'application/pdf',
            'file_size' => 4096,
            'file_hash' => Str::random(64),
            'uploaded_by_user_id' => $user->id,
            'uploaded_at' => now(),
        ]);

        $document->versions()->where('id', '!=', $secondVersion->id)->update(['is_current' => false]);
        $document->update([
            'current_version_id' => $secondVersion->id,
            'version_count' => 2,
            'last_updated_by_user_id' => $user->id,
        ]);

        $related = $this->createDocumentWithVersion($user, $category, [
            'title' => '相關文件',
            'access_level' => 'public',
            'status' => 'active',
        ]);

        $this->getJson('/api/v1/public-documents/'.$document->public_uuid)
            ->assertOk()
            ->assertJsonPath('data.slug', $document->public_uuid)
            ->assertJsonPath('data.title', '主文件')
            ->assertJsonPath('data.version_count', 2)
            ->assertJsonPath('data.current_version.version_number', '1.1')
            ->assertJsonPath('data.versions.0.version_number', '1.1')
            ->assertJsonPath('related.0.slug', $related->public_uuid);
    }

    private function createDocumentWithVersion(User $user, DocumentCategory $category, array $overrides = []): Document
    {
        $document = Document::factory()->create(array_merge([
            'document_category_id' => $category->id,
            'created_by_user_id' => $user->id,
            'last_updated_by_user_id' => $user->id,
            'access_level' => 'public',
            'status' => 'active',
            'version_count' => 0,
        ], $overrides));

        $version = DocumentVersion::create([
            'document_id' => $document->id,
            'version_number' => '1.0',
            'version_notes' => '初始版本',
            'is_current' => true,
            'file_path' => 'documents/test-'.$document->id.'.pdf',
            'original_filename' => 'test-'.$document->id.'.pdf',
            'mime_type' => 'application/pdf',
            'file_size' => 2048,
            'file_hash' => Str::random(64),
            'uploaded_by_user_id' => $user->id,
            'uploaded_at' => now()->subHour(),
        ]);

        $document->update([
            'current_version_id' => $version->id,
            'version_count' => 1,
        ]);

        return $document->fresh();
    }
}