using System.Runtime.InteropServices;
using System.Text;
using System.Text.Json;
using XFESystem.Console;
using XFESystem.ConsoleDemo;

global::System.Console.OutputEncoding = Encoding.UTF8;

if (args.Length == 2 && args[0] == "--Verify")
{
    using var captured = new StringWriter();
    ConsoleDemoScenario.Run(captured);
    ConsoleDemoScenario.RunXfeConsoleApi(captured);
    var transcript = captured.ToString();
    var terminal = new TerminalBuffer(80, 20);
    // Deliberately split every escape and surrogate boundary to exercise streaming.
    foreach (var character in transcript)
        terminal.Write(character.ToString());
    terminal.Complete();

    var expected = new[]
    {
        "XFESystem C# Console Demo", "RGB: #75C9F5", "Indexed: 202 / 236",
        "ConsoleColor ANSI: Blue", "Style: Bold + Underline", "Reset: Theme default",
        "Edit: OK", "Cursor: x!", "Unicode: 中文 g y", ConsoleDemoScenario.SuccessMarker,
        "XFEConsole API: Real NuGet 2.6.0"
    };
    var lines = Enumerable.Range(0, expected.Length).Select(row => terminal.GetLine(row)).ToArray();
    var assertions = new Dictionary<string, bool>
    {
        ["ExpectedTextAndControlCharacters"] = lines.SequenceEqual(expected),
        ["TrueColor"] = terminal.GetCell(0, 1).Style.Foreground == new TerminalColor(117, 201, 245),
        ["IndexedForeground"] = terminal.GetCell(0, 2).Style.Foreground == new TerminalColor(255, 95, 0),
        ["IndexedBackground"] = terminal.GetCell(0, 2).Style.Background == new TerminalColor(48, 48, 48),
        ["ConsoleColorAnsiMapping"] = terminal.GetCell(0, 3).Style.Foreground == TerminalColor.FromConsoleColor(ConsoleColor.Blue),
        ["BoldAndUnderline"] = terminal.GetCell(0, 4).Style is { Bold: true, Underline: true },
        ["StyleReset"] = terminal.GetCell(0, 5).Style == TerminalStyle.Default,
        ["NoEscapeLeak"] = !terminal.GetText().Contains('\u001b'),
        ["RealXfeConsoleAssembly"] = typeof(XFEExtension.NetCore.XFEConsole.XFEConsole).Assembly.GetName().Name == "XFEExtension.NetCore.XFEConsole"
    };
    var reportPath = Path.GetFullPath(args[1]);
    Directory.CreateDirectory(Path.GetDirectoryName(reportPath)!);
    var report = new ConsoleVerificationReport
    {
        Schema = "XFESystem.ConsoleDemo.HostVerification.V1",
        HostOnly = true,
        GuestExecution = false,
        Runtime = RuntimeInformation.FrameworkDescription,
        OperatingSystem = RuntimeInformation.OSDescription,
        Package = new ConsolePackage("XFEExtension.NetCore.XFEConsole", "2.6.0"),
        SystemConsoleColorPal = "Not verified by redirected text capture; requires a native console or guest PAL test",
        Passed = assertions.Values.All(value => value),
        Assertions = assertions,
        Lines = lines,
        Foreground = Enumerable.Range(0, expected.Length).Select(row => terminal.GetCell(0, row).Style.Foreground.Hex).ToArray(),
        Transcript = transcript
    };
    File.WriteAllText(reportPath, JsonSerializer.Serialize(report,
        ConsoleReportJsonContext.Default.ConsoleVerificationReport), new UTF8Encoding(false));
    global::System.Console.WriteLine($"Host console model verification: {reportPath}");
    return assertions.Values.All(value => value) ? 0 : 1;
}

if (args.Length != 0)
{
    global::System.Console.Error.WriteLine("Usage: XFESystem.ConsoleDemo.App [--Verify Report.json]");
    return 2;
}

ConsoleDemoScenario.RunSystemConsoleColors();
ConsoleDemoScenario.Run(global::System.Console.Out);
ConsoleDemoScenario.RunXfeConsoleApi(global::System.Console.Out);
return 0;