<?php

namespace Tests\Feature;

use App\Http\Middleware\VerifyCsrfToken;
use App\Models\User;
use App\Models\Video;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

/**
 * Phase 2 — Performance and DOM. Guards against regressions in the shared
 * edit modal, owner-only menu items, thumbnail layout-shift attrs, and the
 * cursor-paginated feed endpoint.
 */
class Phase2PerfTest extends TestCase
{
    use RefreshDatabase;

    protected function setUp(): void
    {
        putenv('DB_CONNECTION=sqlite');
        putenv('DB_DATABASE=:memory:');
        $_ENV['DB_CONNECTION'] = 'sqlite';
        $_ENV['DB_DATABASE']   = ':memory:';

        parent::setUp();

        $this->withoutMiddleware([
            VerifyCsrfToken::class,
            \Illuminate\Session\Middleware\AuthenticateSession::class,
        ]);
    }

    // ─── Shared edit modal: per-card copy is gone ─────

    public function test_video_card_does_not_render_a_per_card_edit_modal(): void
    {
        [$user, $video] = $this->makeUserAndVideo();
        $this->actingAs($user);

        $html = view('components.video-card', ['video' => $video])->render();

        // The dead per-card modal used id="editVideoModal{slug}" and the class
        // "cute-edit-modal". If either reappears, we're back to shipping 100
        // extra lines per card.
        $this->assertStringNotContainsString('editVideoModal' . $video->getRouteKey(), $html);
        $this->assertStringNotContainsString('cute-edit-modal', $html);
    }

    // ─── Owner-only menu items ────────────────────────

    public function test_owner_sees_edit_delete_items_in_card_menu(): void
    {
        [$owner, $video] = $this->makeUserAndVideo();
        $this->actingAs($owner);

        $html = view('components.video-card', ['video' => $video])->render();

        $this->assertStringContainsString('openEditVideoModal', $html);
        $this->assertStringContainsString('showDeleteModal', $html);
        $this->assertStringNotContainsString('notInterested', $html);
        $this->assertStringNotContainsString('dontRecommendChannel', $html);
        $this->assertStringNotContainsString('reportVideo', $html);
    }

    public function test_non_owner_sees_report_items_but_not_edit(): void
    {
        [$owner, $video] = $this->makeUserAndVideo();
        $viewer = User::factory()->create([
            'username' => 'v'.substr(bin2hex(random_bytes(4)), 0, 8),
        ]);
        $this->actingAs($viewer);

        $html = view('components.video-card', ['video' => $video])->render();

        $this->assertStringNotContainsString('openEditVideoModal', $html);
        $this->assertStringNotContainsString('showDeleteModal', $html);
        $this->assertStringContainsString('notInterested', $html);
        $this->assertStringContainsString('reportVideo', $html);
    }

    // ─── Thumbnail layout-shift attributes ────────────

    public function test_thumbnail_image_has_width_and_height(): void
    {
        [$user, $video] = $this->makeUserAndVideo();
        $this->actingAs($user);

        $html = view('components.video-card', ['video' => $video])->render();

        $this->assertMatchesRegularExpression(
            '/<img[^>]*width="320"[^>]*height="180"/i',
            $html,
            'Thumbnail img must carry explicit width/height so the browser reserves layout space.'
        );
        $this->assertStringContainsString('loading="lazy"', $html);
    }

    // ─── Cursor-paginated feed endpoint ───────────────

    public function test_feed_more_returns_json_with_cards_and_next_cursor(): void
    {
        $user = User::factory()->create([
            'username' => 'f'.substr(bin2hex(random_bytes(4)), 0, 8),
        ]);
        // Twice the page size so the cursor must advance.
        for ($i = 0; $i < 30; $i++) {
            Video::create([
                'user_id'     => $user->id,
                'title'       => 'Vid ' . $i,
                'description' => '',
                'filename'    => "users/x/videos/y{$i}/video.mp4",
                'path'        => "users/x/videos/y{$i}/video.mp4",
                'type'        => 'generic',
                'visibility'  => 'public',
                'status'      => 'ready',
                'share_token' => bin2hex(random_bytes(8)),
            ]);
        }

        $r = $this->getJson(route('videos.feed.more', ['filter' => 'all']));
        $r->assertOk();
        $r->assertJsonStructure(['items', 'next_cursor', 'has_more']);
        $this->assertTrue($r->json('has_more'), 'With 30 videos and a 24-page size, has_more must be true.');
        $this->assertNotEmpty($r->json('next_cursor'));
        $this->assertStringContainsString('yt-video-card', (string) $r->json('items'));
    }

    public function test_feed_more_unknown_filter_returns_empty_slice(): void
    {
        $this->getJson(route('videos.feed.more', ['filter' => 'nonsense']))
            ->assertOk()
            ->assertJson(['items' => '', 'has_more' => false]);
    }

    // ─── Lazy reply-form template present ─────────────

    public function test_comments_component_ships_the_reply_template_not_inline_forms(): void
    {
        [$user, $video] = $this->makeUserAndVideo();
        \App\Models\Comment::create([
            'user_id'  => $user->id,
            'video_id' => $video->id,
            'body'     => 'top-level comment',
        ]);
        $this->actingAs($user);

        $html = view('components.video-comments', ['video' => $video])->render();

        $this->assertStringContainsString('id="ytc-reply-form-tpl"', $html);
        $this->assertStringContainsString('ytc-reply-slot', $html);
    }

    // ─── Helpers ──────────────────────────────────────

    private function makeUserAndVideo(): array
    {
        $user = User::factory()->create([
            'username' => 'u'.substr(bin2hex(random_bytes(4)), 0, 8),
        ]);
        $video = Video::create([
            'user_id'    => $user->id,
            'title'      => 'Test video',
            'description'=> 'Hello',
            'filename'   => 'users/x/videos/y/video.mp4',
            'path'       => 'users/x/videos/y/video.mp4',
            'type'        => 'generic',
            'visibility'  => 'public',
            'status'      => 'ready',
            'share_token' => bin2hex(random_bytes(8)),
        ]);
        return [$user, $video];
    }
}