using System;
using Paca.Core.Platform;
using Paca.Core.QuickActions;
using Xunit;

namespace Paca.Tests.Core;

public class ClipboardAndEncoderSecurityExtremeRedTests
{
    private readonly QuickActionClipboardDetector _detector = new();

    [Theory]
    [InlineData("---")]
    [InlineData("----")]
    [InlineData("+++")]
    [InlineData("***")]
    [InlineData("///")]
    [InlineData("+ - * /")]
    [InlineData("(+)")]
    [InlineData("====")]
    public void QuickActionClipboardDetector_NonMathSymbols_DoesNotDetectAsMathExpression(string input)
    {
        var result = _detector.DetectIntent(input);
        Assert.NotEqual(ClipboardIntentType.Expression, result.IntentType);
    }

    [Theory]
    [InlineData("12 + 34")]
    [InlineData("100 / 5")]
    [InlineData("(3 + 4) * 2")]
    [InlineData("2 ^ 8")]
    [InlineData("50 * 1.1")]
    public void QuickActionClipboardDetector_ValidArithmetic_DetectsAsExpression(string input)
    {
        var result = _detector.DetectIntent(input);
        Assert.Equal(ClipboardIntentType.Expression, result.IntentType);
    }

    [Theory]
    [InlineData("https://evil.com/login?ref=youtube.com")]
    [InlineData("https://phishing.org/index.html?redirect=twitter.com")]
    [InlineData("https://attacker.site/steal?feed=tiktok.com")]
    [InlineData("https://notyoutube.com/watch?v=123")]
    public void QuickActionClipboardDetector_PhishingDomainQuery_DoesNotDetectAsMediaDownload(string input)
    {
        var result = _detector.DetectIntent(input);
        Assert.NotEqual(ClipboardIntentType.MediaDownload, result.IntentType);
        Assert.Equal(ClipboardIntentType.BrowseUrl, result.IntentType);
    }

    [Theory]
    [InlineData("https://www.youtube.com/watch?v=dQw4w9WgXcQ")]
    [InlineData("https://x.com/user/status/123456")]
    [InlineData("https://stream.example.com/playlist.m3u8")]
    [InlineData("https://video.example.com/movie.mp4")]
    public void QuickActionClipboardDetector_RealMediaUrls_DetectsAsMediaDownload(string input)
    {
        var result = _detector.DetectIntent(input);
        Assert.Equal(ClipboardIntentType.MediaDownload, result.IntentType);
    }

    private sealed class LocalMockRunner : IProcessRunner
    {
        public Task<ProcessResult> RunAsync(ProcessSpec spec, Action<string, string>? onLine, System.Threading.CancellationToken ct) =>
            Task.FromResult(new ProcessResult(0, "", ""));
    }

    [Fact]
    public void HardwareEncoderDetector_NullCapabilities_SafelyFallsBackToSoftwareCodecs()
    {
        var detector = new HardwareEncoderDetector(new LocalMockRunner());

        Assert.Equal("libx264", detector.GetBestH264Encoder(null!));
        Assert.Equal("libx265", detector.GetBestHevcEncoder(null!));
        Assert.Equal("libsvtav1", detector.GetBestAv1Encoder(null!));
    }

    [Fact]
    public void HardwareEncoderDetector_BuildEncodingArgs_NullOrWhitespaceEncoder_DefaultsToLibx264()
    {
        var args = HardwareEncoderDetector.BuildEncodingArgs(null!, 23, "fast");
        Assert.Contains("-c:v", args);
        Assert.Contains("libx264", args);
    }

    [Fact]
    public void HardwareEncoderDetector_BuildEncodingArgs_NullPreset_DefaultsToFast()
    {
        var args = HardwareEncoderDetector.BuildEncodingArgs("libx264", 23, null!);
        Assert.Contains("-preset", args);
        Assert.Contains("fast", args);
    }

    [Theory]
    [InlineData(-10, 0)]
    [InlineData(100, 63)]
    public void HardwareEncoderDetector_BuildEncodingArgs_CrfClamping_ClampsBetweenZeroAnd63(int inputCrf, int expectedCrf)
    {
        var args = HardwareEncoderDetector.BuildEncodingArgs("libx264", inputCrf, "fast");
        var crfIdx = Array.IndexOf(args, "-crf");
        Assert.True(crfIdx >= 0);
        Assert.Equal(expectedCrf.ToString(), args[crfIdx + 1]);
    }
}