using RioJoy.Core.Hosting;
using Xunit;

namespace RioJoy.Core.Tests.Hosting;

public class CompanionTargetTests
{
    [Fact]
    public void NumericValue_IsAPid()
    {
        CompanionTarget target = CompanionTarget.Parse("4312");
        Assert.Equal(4312, target.Pid);
        Assert.Null(target.Name);
    }

    [Theory]
    [InlineData("d1x-rebirth")]
    [InlineData("D1X-Rebirth.exe")]
    [InlineData(@"C:\games\descent\d1x-rebirth.exe")]
    public void NameForms_NormalizeLikeTriggers(string value)
    {
        CompanionTarget target = CompanionTarget.Parse(value);
        Assert.Null(target.Pid);
        Assert.Equal("d1x-rebirth", target.Name);
    }

    [Fact]
    public void BlankValue_Throws()
    {
        Assert.Throws<ArgumentException>(() => CompanionTarget.Parse("  "));
    }
}

public class CompanionExitTests
{
    private static readonly TimeSpan Grace = TimeSpan.FromSeconds(60);

    [Fact]
    public void CompanionSeenThenGone_Exits()
    {
        var exit = new CompanionExit(Grace);
        Assert.False(exit.ShouldExit(companionRunning: true, TimeSpan.FromSeconds(1)));
        Assert.False(exit.ShouldExit(companionRunning: true, TimeSpan.FromSeconds(2)));
        Assert.True(exit.ShouldExit(companionRunning: false, TimeSpan.FromSeconds(3)));
    }

    [Fact]
    public void CompanionNeverSeen_WaitsOutTheStartupGrace()
    {
        // Launch order is not guaranteed: the game may still be loading.
        var exit = new CompanionExit(Grace);
        Assert.False(exit.ShouldExit(companionRunning: false, TimeSpan.FromSeconds(5)));
        Assert.False(exit.ShouldExit(companionRunning: false, TimeSpan.FromSeconds(59)));
        Assert.True(exit.ShouldExit(companionRunning: false, TimeSpan.FromSeconds(60)));
    }

    [Fact]
    public void LateStart_WithinGrace_StillTracksTheCompanion()
    {
        var exit = new CompanionExit(Grace);
        Assert.False(exit.ShouldExit(companionRunning: false, TimeSpan.FromSeconds(30)));
        Assert.False(exit.ShouldExit(companionRunning: true, TimeSpan.FromSeconds(45))); // game arrived late
        Assert.False(exit.ShouldExit(companionRunning: true, TimeSpan.FromSeconds(90))); // grace no longer matters
        Assert.True(exit.ShouldExit(companionRunning: false, TimeSpan.FromSeconds(91)));
    }
}