@using LANCommander.Launcher.Services.PowerShell
@using XtermBlazor
@using LogLevel = Microsoft.Extensions.Logging.LogLevel
@namespace LANCommander.Launcher.UI
@inject ScriptDebugger Debugger

<div class="terminal @(Visible ? "" : "hidden")">
    <Terminal @ref="_terminal" Options="_options" OnFirstRender="@OnFirstRender" />
</div>

@code {
    private bool Visible { get; set; }
    private Terminal? _terminal;

    private TerminalOptions _options = new()
    {
        CursorBlink = true,
        CursorStyle = CursorStyle.Bar,
    };

    protected override void OnInitialized()
    {
        Debugger.OnDebugStart = async _ =>
        {
            if (_terminal is null)
                return;
            
            await _terminal.Clear();
            Visible = true;
            await InvokeAsync(StateHasChanged);

            await _terminal.FitAsync();
        };

        Debugger.OnOutput = async (level, message) =>
        {
            if (_terminal is not null)
                await _terminal.WriteLine(message, level);
        };

        Debugger.OnDebugBreak = async context =>
        {
            if (_terminal is null)
                return;
            
            while (true)
            {
                var input = await _terminal.ReadLineAsync();

                if (input.Trim().Equals("exit", StringComparison.OrdinalIgnoreCase))
                    break;

                if (input.StartsWith('$'))
                    input = "Write-Host " + input;

                await context.ExecuteAsync(input);
            }

            Visible = false;
            await InvokeAsync(StateHasChanged);
        };
    }

    private async Task OnFirstRender()
    {
        if (_terminal is not null)
            await _terminal.FitAsync();
    }
}