<?php

declare(strict_types=1);

namespace Apoloz\VideoExtractor\Tests\Unit;

use Apoloz\VideoExtractor\Exceptions\ParseFailedException;
use Apoloz\VideoExtractor\Parsing\EmbeddedJsonExtractor;
use Apoloz\VideoExtractor\Tests\TestCase;

class EmbeddedJsonExtractorTest extends TestCase
{
    private EmbeddedJsonExtractor $extractor;

    protected function setUp(): void
    {
        parent::setUp();
        $this->extractor = new EmbeddedJsonExtractor();
    }

    public function test_extracts_flat_object(): void
    {
        $html = 'prefix window.cur = Object.assign(window.cur || {}, {"a":1,"b":"x"}); suffix';

        $result = $this->extractor->extractAfterMarker($html, 'window.cur = Object.assign(');

        self::assertSame(['a' => 1, 'b' => 'x'], $result);
    }

    public function test_extracts_deeply_nested_structure(): void
    {
        $html = 'x = Object.assign({}, {"apiPrefetchCache":[{"response":{"items":[{"id":1,"files":{"hls":"u"}}]}}]});';

        $result = $this->extractor->extractAfterMarker($html, 'Object.assign(');

        self::assertSame(1, $result['apiPrefetchCache'][0]['response']['items'][0]['id']);
        self::assertSame('u', $result['apiPrefetchCache'][0]['response']['items'][0]['files']['hls']);
    }

    public function test_ignores_braces_inside_strings(): void
    {
        // A brace and quote inside a string must not unbalance the count.
        $html = 'm({"msg":"has } and \" escaped","n":2});';

        $result = $this->extractor->extractAfterMarker($html, 'm(');

        self::assertSame('has } and " escaped', $result['msg']);
        self::assertSame(2, $result['n']);
    }

    public function test_extracts_array_root(): void
    {
        $html = 'data = assign([], [1, [2, 3], {"k": "v"}]);';

        $result = $this->extractor->extractAfterMarker($html, 'assign([], ');

        self::assertSame([1, [2, 3], ['k' => 'v']], $result);
    }

    public function test_throws_when_marker_missing(): void
    {
        $this->expectException(ParseFailedException::class);
        $this->extractor->extractAfterMarker('no marker here', 'window.cur');
    }

    public function test_throws_on_unbalanced_json(): void
    {
        $this->expectException(ParseFailedException::class);
        $this->extractor->extractAfterMarker('m({"a":1', 'm(');
    }

    public function test_handles_cyrillic_content(): void
    {
        $html = 'window.cur = Object.assign(window.cur || {}, {"title":"Трамп отменяет гранты"});';

        $result = $this->extractor->extractAfterMarker($html, 'window.cur = Object.assign(');

        self::assertSame('Трамп отменяет гранты', $result['title']);
    }
}