using System;
using Paca.Mobile.Core;
using Xunit;

namespace Paca.Tests.Core;

public class SubtitleFormatConverterGateTests
{
    [Fact]
    public void Gate345_SubtitleFormatConverter_ConvertsSrtToVtt_Correctly()
    {
        var srt = @"1
00:00:01,234 --> 00:00:04,567
Hello world!

2
00:00:05,000 --> 00:00:08,100
Welcome to Paca.";

        var vtt = SubtitleFormatConverter.ConvertSrtToVtt(srt);

        Assert.StartsWith("WEBVTT", vtt.TrimStart());
        Assert.Contains("00:00:01.234 --> 00:00:04.567", vtt);
        Assert.Contains("00:00:05.000 --> 00:00:08.100", vtt);
        Assert.DoesNotContain(",234", vtt);
    }

    [Fact]
    public void Gate346_SubtitleFormatConverter_ConvertsVttToSrt_Correctly()
    {
        var vtt = @"WEBVTT

00:00:01.234 --> 00:00:04.567
Hello world!

00:00:05.000 --> 00:00:08.100
Welcome to Paca.";

        var srt = SubtitleFormatConverter.ConvertVttToSrt(vtt);

        Assert.DoesNotContain("WEBVTT", srt);
        Assert.Contains("1\n00:00:01,234 --> 00:00:04,567", srt.Replace("\r\n", "\n"));
        Assert.Contains("00:00:01,234 --> 00:00:04,567", srt);
        Assert.Contains("00:00:05,000 --> 00:00:08,100", srt);
    }

    [Fact]
    public void Gate347_SubtitleFormatConverter_StripsFormattingTags_Cleanly()
    {
        var formatted = "<b>Hello</b> <i><font color=\"#ff0000\">World</font></i> & enjoy!";
        var clean = SubtitleFormatConverter.StripFormattingTags(formatted);

        Assert.Equal("Hello World & enjoy!", clean);
    }

    [Fact]
    public void Gate348_SubtitleFormatConverter_HandlesEmptyAndWhitespaceGracefully()
    {
        Assert.Equal(string.Empty, SubtitleFormatConverter.ConvertSrtToVtt(string.Empty));
        Assert.Equal(string.Empty, SubtitleFormatConverter.ConvertVttToSrt(string.Empty));
        Assert.Equal(string.Empty, SubtitleFormatConverter.StripFormattingTags(string.Empty));
    }
}