<?php

namespace Tests\Feature\Http\Controllers\Api\V1;

use App\Enums\ApprovalStatusEnum;
use App\Events\RouteArticleApproved;
use App\Models\Article;
use App\Models\Feed;
use App\Models\Route;
use App\Models\RouteArticle;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Event;
use Tests\TestCase;

class RouteArticlesControllerTest extends TestCase
{
    use RefreshDatabase;

    private function createRouteArticle(ApprovalStatusEnum $status = ApprovalStatusEnum::PENDING): RouteArticle
    {
        $feed = Feed::factory()->create();

        /** @var Route $route */
        $route = Route::factory()->active()->create(['feed_id' => $feed->id]);
        $article = Article::factory()->create(['feed_id' => $feed->id]);

        /** @var RouteArticle $routeArticle */
        $routeArticle = RouteArticle::factory()->forRoute($route)->create([
            'article_id' => $article->id,
            'approval_status' => $status,
            'validated_at' => now(),
        ]);

        return $routeArticle;
    }

    public function test_index_returns_successful_response(): void
    {
        $response = $this->getJson('/api/v1/route-articles');

        $response->assertStatus(200)
            ->assertJsonStructure([
                'success',
                'data' => [
                    'route_articles',
                    'pagination' => [
                        'current_page',
                        'last_page',
                        'per_page',
                        'total',
                        'from',
                        'to',
                    ],
                ],
                'message',
            ]);
    }

    public function test_index_returns_route_articles_with_pagination(): void
    {
        $feed = Feed::factory()->create();
        /** @var Route $route */
        $route = Route::factory()->active()->create(['feed_id' => $feed->id]);

        for ($i = 0; $i < 20; $i++) {
            $article = Article::factory()->create(['feed_id' => $feed->id]);
            RouteArticle::factory()->forRoute($route)->create([
                'article_id' => $article->id,
                'validated_at' => now(),
            ]);
        }

        $response = $this->getJson('/api/v1/route-articles?per_page=10');

        $response->assertStatus(200)
            ->assertJson([
                'success' => true,
                'data' => [
                    'pagination' => [
                        'per_page' => 10,
                        'total' => 20,
                        'last_page' => 2,
                    ],
                ],
            ]);

        $this->assertCount(10, $response->json('data.route_articles'));
    }

    public function test_index_filters_by_status(): void
    {
        $this->createRouteArticle(ApprovalStatusEnum::PENDING);
        $this->createRouteArticle(ApprovalStatusEnum::PENDING);
        $this->createRouteArticle(ApprovalStatusEnum::APPROVED);
        $this->createRouteArticle(ApprovalStatusEnum::REJECTED);

        $response = $this->getJson('/api/v1/route-articles?status=pending');

        $response->assertStatus(200);
        $this->assertCount(2, $response->json('data.route_articles'));
    }

    public function test_index_returns_all_when_no_status_filter(): void
    {
        $this->createRouteArticle(ApprovalStatusEnum::PENDING);
        $this->createRouteArticle(ApprovalStatusEnum::APPROVED);
        $this->createRouteArticle(ApprovalStatusEnum::REJECTED);

        $response = $this->getJson('/api/v1/route-articles');

        $response->assertStatus(200);
        $this->assertCount(3, $response->json('data.route_articles'));
    }

    public function test_index_includes_article_and_route_data(): void
    {
        $routeArticle = $this->createRouteArticle();

        $response = $this->getJson('/api/v1/route-articles');

        $response->assertStatus(200);

        $data = $response->json('data.route_articles.0');
        $this->assertArrayHasKey('article', $data);
        $this->assertArrayHasKey('title', $data['article']);
        $this->assertArrayHasKey('url', $data['article']);
        $this->assertArrayHasKey('route_name', $data);
        $this->assertArrayHasKey('approval_status', $data);
    }

    public function test_approve_route_article_successfully(): void
    {
        Event::fake([RouteArticleApproved::class]);

        $routeArticle = $this->createRouteArticle(ApprovalStatusEnum::PENDING);

        $response = $this->postJson("/api/v1/route-articles/{$routeArticle->id}/approve");

        $response->assertStatus(200)
            ->assertJson([
                'success' => true,
                'message' => 'Route article approved and queued for publishing.',
            ]);

        $this->assertEquals(ApprovalStatusEnum::APPROVED, $routeArticle->fresh()->approval_status);

        Event::assertDispatched(RouteArticleApproved::class, function ($event) use ($routeArticle) {
            return $event->routeArticle->id === $routeArticle->id;
        });
    }

    public function test_approve_nonexistent_route_article_returns_404(): void
    {
        $response = $this->postJson('/api/v1/route-articles/999/approve');

        $response->assertStatus(404);
    }

    public function test_reject_route_article_successfully(): void
    {
        $routeArticle = $this->createRouteArticle(ApprovalStatusEnum::PENDING);

        $response = $this->postJson("/api/v1/route-articles/{$routeArticle->id}/reject");

        $response->assertStatus(200)
            ->assertJson([
                'success' => true,
                'message' => 'Route article rejected.',
            ]);

        $this->assertEquals(ApprovalStatusEnum::REJECTED, $routeArticle->fresh()->approval_status);
    }

    public function test_reject_nonexistent_route_article_returns_404(): void
    {
        $response = $this->postJson('/api/v1/route-articles/999/reject');

        $response->assertStatus(404);
    }

    public function test_restore_route_article_successfully(): void
    {
        $routeArticle = $this->createRouteArticle(ApprovalStatusEnum::REJECTED);

        $response = $this->postJson("/api/v1/route-articles/{$routeArticle->id}/restore");

        $response->assertStatus(200)
            ->assertJson([
                'success' => true,
                'message' => 'Route article restored to pending.',
            ]);

        $this->assertEquals(ApprovalStatusEnum::PENDING, $routeArticle->fresh()->approval_status);
    }

    public function test_restore_nonexistent_route_article_returns_404(): void
    {
        $response = $this->postJson('/api/v1/route-articles/999/restore');

        $response->assertStatus(404);
    }

    public function test_clear_rejects_all_pending_route_articles(): void
    {
        $this->createRouteArticle(ApprovalStatusEnum::PENDING);
        $this->createRouteArticle(ApprovalStatusEnum::PENDING);
        $this->createRouteArticle(ApprovalStatusEnum::PENDING);
        $this->createRouteArticle(ApprovalStatusEnum::APPROVED);

        $response = $this->postJson('/api/v1/route-articles/clear');

        $response->assertStatus(200)
            ->assertJson([
                'success' => true,
                'data' => [
                    'rejected_count' => 3,
                ],
            ]);

        $this->assertEquals(0, RouteArticle::where('approval_status', ApprovalStatusEnum::PENDING)->count());
        $this->assertEquals(1, RouteArticle::where('approval_status', ApprovalStatusEnum::APPROVED)->count());
        $this->assertEquals(3, RouteArticle::where('approval_status', ApprovalStatusEnum::REJECTED)->count());
    }

    public function test_clear_returns_zero_when_no_pending(): void
    {
        $this->createRouteArticle(ApprovalStatusEnum::APPROVED);

        $response = $this->postJson('/api/v1/route-articles/clear');

        $response->assertStatus(200)
            ->assertJson([
                'success' => true,
                'data' => [
                    'rejected_count' => 0,
                ],
            ]);
    }

    public function test_index_respects_per_page_limit(): void
    {
        $response = $this->getJson('/api/v1/route-articles?per_page=150');

        $response->assertStatus(200)
            ->assertJson([
                'data' => [
                    'pagination' => [
                        'per_page' => 100,
                    ],
                ],
            ]);
    }
}