// Copyright (c) Microsoft Corporation
// The Microsoft Corporation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Security.Principal;

using Windows.Management.Deployment;

// using Wox.Plugin.Logger;
namespace Microsoft.CmdPal.Ext.WindowsTerminal.Helpers;

public class TerminalQuery : ITerminalQuery
{
    private readonly PackageManager _packageManager;

    // Static list of all Windows Terminal packages.
    private static ReadOnlyCollection<string> Packages => new List<string>
    {
        "Microsoft.WindowsTerminal",
        "Microsoft.WindowsTerminalPreview",
        "Microsoft.WindowsTerminalCanary",
    }.AsReadOnly();

    private IEnumerable<TerminalPackage> Terminals => GetTerminals();

    public TerminalQuery()
    {
        _packageManager = new PackageManager();
    }

    public IEnumerable<TerminalProfile> GetProfiles()
    {
        var profiles = new List<TerminalProfile>();

        if (!Terminals.Any())
        {
            // TODO: what kind of logging should we do?
            // Log.Warn($"No Windows Terminal packages installed", typeof(TerminalQuery));
        }

        foreach (var terminal in Terminals)
        {
            if (!File.Exists(terminal.SettingsPath))
            {
                // TODO: what kind of logging should we do?
                // Log.Warn($"Failed to find settings file {terminal.SettingsPath}", typeof(TerminalQuery));
                continue;
            }

            var settingsJson = File.ReadAllText(terminal.SettingsPath);
            profiles.AddRange(TerminalHelper.ParseSettings(terminal, settingsJson));
        }

        return profiles.OrderBy(p => p.Name);
    }

    private IEnumerable<TerminalPackage> GetTerminals()
    {
        var user = WindowsIdentity.GetCurrent().User;
        var localAppDataPath = Environment.GetEnvironmentVariable("LOCALAPPDATA");

        foreach (var p in _packageManager.FindPackagesForUser(user.Value).Where(p => Packages.Contains(p.Id.Name)))
        {
            var appListEntries = p.GetAppListEntries();

            var aumid = appListEntries.Single().AppUserModelId;
            var version = new Version(p.Id.Version.Major, p.Id.Version.Minor, p.Id.Version.Build, p.Id.Version.Revision);
            var settingsPath = Path.Combine(localAppDataPath, "Packages", p.Id.FamilyName, "LocalState", "settings.json");
            yield return new TerminalPackage(aumid, version, p.DisplayName, settingsPath, p.Logo.LocalPath);
        }
    }
}