using ModVersionChecker.enums;
using ModVersionChecker.managers.interfaces;
using ModVersionChecker.model;
using ModVersionChecker.repository.api.dto;
using ModVersionChecker.service.interfaces;
using ModVersionChecker.utils;


namespace ModVersionChecker.ui.forms
{
    public class MainForm : Form
    {
        private readonly IAppsManager _appsManager;
        private readonly IFormFactory _formFactory;
        private readonly IFlightSimsManager _fsManager;
        private readonly IApiService _apiService;
        private readonly IVersionService _versionService;
        private readonly TableLayoutPanel _mainLayout;

        private readonly Config _globalConfig;
        private List<App> _apps = new List<App>();
        private ListView _listView;
        private ImageList _statusImageList = new ImageList();

        public event EventHandler<EventArgs> OnConfigChanged;
        public event EventHandler<string> OnRecheck;
        private EventHandler<string> onAppSavedHandler;
        private MenuStrip _menuStrip;
        private List<TypeResponse> _fsMods;
        private readonly Dictionary<string, TextBox> _fsModPathTextBoxes = new Dictionary<string, TextBox>();

        private List<SourceResponse> _sources = new List<SourceResponse>();
        private List<TypeResponse> _typesDef = new List<TypeResponse>();

        public MainForm(
            IConfigManager configManager, 
            IAppsManager appsManager, 
            IFormFactory formFactory, 
            IFlightSimsManager fsManager, 
            IApiService apiService,
            ITypeManager typeConfigManager,
            IVersionService versionService)
        {
            _appsManager = appsManager ?? throw new ArgumentNullException(nameof(appsManager));
            _formFactory = formFactory ?? throw new ArgumentNullException(nameof(formFactory));
            _fsManager = fsManager ?? throw new ArgumentNullException(nameof(fsManager));
            _apiService = apiService ?? throw new ArgumentNullException(nameof(apiService));
            _versionService = versionService ?? throw new ArgumentNullException(nameof(versionService));
            _fsMods = _fsManager.Load();

            _statusImageList.Images.Add("none", new Icon("Resources/ok-icon.ico"));
            _statusImageList.Images.Add("update", new Icon("Resources/up-icon.ico"));
            _statusImageList.Images.Add("error", new Icon("Resources/error-icon.ico"));

            Text = "Update Checker Configuration";
            Size = new Size(600, 800);
            StartPosition = FormStartPosition.CenterScreen;

            _globalConfig = configManager.Load() ?? new Config();

            _mainLayout = GetMainLayout();

            _listView = GetListView();
            _listView.SmallImageList = _statusImageList;

            _mainLayout.Controls.Add(_listView , 0, 0);

            _mainLayout.Controls.Add(GetButtonsPanel(), 0, 1);

            onAppSavedHandler = (s2, e) =>
            {
                var form = s2 as AppDetailsForm;
                if (form == null || form.SelectedApp == null) return;

                var app = form.SelectedApp;
                UpdateCurrentVersion(app);
                UpdateListView();
                OnConfigChanged?.Invoke(this, EventArgs.Empty);
            };

            this.Load += MainForm_LoadAsync;
        }

        private void UpdateCurrentVersion(App app)
        {
            TypeConfig? typeConfig = _globalConfig.Types.FirstOrDefault(tc => app.Type == tc.ShortName);
            if (typeConfig == null) return;
            var versionInDisk = VersionUtils.GetCurrentVersion(app, typeConfig);

            if (!string.IsNullOrEmpty(versionInDisk))
            {
                app.CurrentVersion = versionInDisk;
                app.LastCheckedAt = TimeUtils.GetUnixTimeMillis(DateTime.Now);

                _versionService.CheckApp(app);
            }

        }


        private async void MainForm_LoadAsync(object? sender, EventArgs e)
        {
            await _apiService.AuthenticateAsync("user", "user");
            _apps = await _apiService.GetAppsByIds([]);
            _sources = await _apiService.GetSources();
            _typesDef = await _apiService.GetTypes();
            UpdateListView();
        }

        private TableLayoutPanel GetMainLayout() 
        {
            // Initialize the main layout panel
            var mainLayout = new TableLayoutPanel
            {
                Dock = DockStyle.Fill,
                RowCount = 2,
                ColumnCount = 1
            };
            // mainLayout.RowStyles.Add(new RowStyle(SizeType.Absolute, 150)); // Paths panel height
            mainLayout.RowStyles.Add(new RowStyle(SizeType.Percent, 70));  // ListView takes remaining space
            mainLayout.RowStyles.Add(new RowStyle(SizeType.Absolute, 50)); // Button panel height
            Controls.Add(mainLayout);
            InitializeMenu();
            return mainLayout;
        }

        private ListView GetListView()
        {
             var listView = new ListView
            {
                Dock = DockStyle.Fill,
                View = View.Details,
                FullRowSelect = true,
                MultiSelect = false,
                Visible = true,
                Sorting = SortOrder.Ascending                
             };

            listView.Columns.Add("Name", 150);
            listView.Columns.Add("MSFS Versions", 100);
            listView.Columns.Add("Current", 80);
            listView.Columns.Add("Latest", 80);
            listView.Columns.Add("Last Checked", 150);

            listView.DoubleClick += (s, e) =>
            {
                if (listView.SelectedItems.Count > 0)
                {
                    ListViewItem selectedItem = listView.SelectedItems[0];
                    App? app = selectedItem.Tag as App;
                    if (app == null) return;
                    if (app.Status == AppStatus.UPDATE_AVAILABLE)
                    {
                        if (string.IsNullOrEmpty(app.DownloadUrl))
                        {
                            MessageBox.Show("No download URL specified for this app.");
                            return;
                        }
                        System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
                        {
                            FileName = app.DownloadUrl,
                            UseShellExecute = true
                        });
                    } else
                    {

                    }
                        
                }
            };

            return listView;
        }

        private FlowLayoutPanel GetButtonsPanel()         {
            var buttonPanel = new FlowLayoutPanel { Dock = DockStyle.Fill };
            var addButton = new Button { Text = "Add App" };
            var deleteButton = new Button { Text = "Delete App", Enabled = false };
            var recheckButton = new Button { Text = "Recheck Versions" };

            addButton.Click += (s, e) =>
            {
                var form = _formFactory.CreateAppDetailsForm(null, true, onAppSavedHandler); // Use factory
                form.ShowDialog();
            };
            deleteButton.Click += (s, e) =>
            {
                if (_listView.SelectedItems.Count > 0 && _listView.SelectedItems[0].Tag != null)
                {
                    var app = _listView.SelectedItems[0].Tag as App;
                    DeleteApp(app);
                }
            };
            _listView.SelectedIndexChanged += (s, e) =>
            {
                deleteButton.Enabled = _listView.SelectedItems.Count > 0;
            };

            // Add recheck logic here
            recheckButton.Click += async (s, e) =>
            {
                recheckButton.Enabled = false;
                await _versionService.CheckAllApps();
                UpdateListView();
                //OnRecheck.Invoke(this, "User initiated recheck from ConfigForm");
                recheckButton.Enabled = true;
            };

            buttonPanel.Controls.AddRange(new[] { addButton, deleteButton, recheckButton });
            return buttonPanel;
        }

        public void UpdateListView()
        {
            _apps = _appsManager.Load();
            _listView.Items.Clear();
            foreach (var app in _apps)
            {   
                var item = new ListViewItem(app.Name);
                try { 
                    item.Tag = app;
                    item.SubItems.Add(app.Type);

                    var currentVersion = app.CurrentVersion;
                    var latestVersion = app.LatestVersion;
                    var lastChecked = TimeUtils.ToFriendlyTime(app.LastCheckedAt);
                    item.SubItems.Add(currentVersion);
                    item.SubItems.Add(latestVersion);
                    item.SubItems.Add(lastChecked);
                }
                catch (Exception ex)
                {
                    item.SubItems.Add($"Error: {ex.Message}");
                }

                switch (app.Status)
                {
                    case AppStatus.UPDATE_AVAILABLE:
                        item.ImageKey = "update";
                        break;
                    case AppStatus.ERROR:
                        item.ImageKey = "error";
                        break;
                    default:
                        item.ImageKey = "none";
                        break;
                }
                _listView.Items.Add(item);
                
            }
        }

        private void DeleteApp(App app)
        {
            var result = MessageBox.Show($"Are you sure you want to delete '{app?.Name ?? ""}'?", "Confirm Delete", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
            if (result == DialogResult.Yes)
            {
                _appsManager.Delete((_listView.SelectedItems[0].Tag as App).Id);
                UpdateListView();
                OnConfigChanged?.Invoke(this, EventArgs.Empty);
            }
        }

        private void InitializeMenu()
        {
            _menuStrip = new MenuStrip();

            // Create top-level menu
            var configMenu = new ToolStripMenuItem("Configuration");

            // Add sub-menu items
            var settingsItem = new ToolStripMenuItem("Settings");
            settingsItem.Click += (s, e) => ShowGlobalConfigDialog();

            var typesItem = new ToolStripMenuItem("Types");
            typesItem.Click += (s, e) => ShowTypesConfigForm();

            //var sourcesConfigItem = new ToolStripMenuItem("Sources");
            //sourcesConfigItem.Click += (s, e) => ShowSourcesConfigDialog();

            //var FlightSimsConfigItem = new ToolStripMenuItem("Flight Sims");
            //FlightSimsConfigItem.Click += (s, e) => MessageBox.Show("Flight Sims configuration dialog would open here.");

            configMenu.DropDownItems.Add(settingsItem);
            configMenu.DropDownItems.Add(typesItem);
            // configMenu.DropDownItems.Add(sourcesConfigItem);
            // configMenu.DropDownItems.Add(FlightSimsConfigItem);

            _menuStrip.Items.Add(configMenu);

            // Add the menu to the form
            Controls.Add(_menuStrip);
            MainMenuStrip = _menuStrip;
        }

        private void ShowTypesConfigForm()
        {
            var typesConfigForm = _formFactory.CreateTypeConfigForm();
            typesConfigForm.ShowDialog();
        }

        private void ShowGlobalConfigDialog()
        {
            // Show your global config form/dialog here
            var globalConfigForm = _formFactory.CreateGlobalConfigForm();
            globalConfigForm.ShowDialog();
        }

        //private void ShowSourcesConfigDialog()
        //{
        //    EventHandler<string> onSourcesChanged = (s, e) => MessageBox.Show("Sources Changed");
        //    var form = _formFactory.CreateSourcesConfigForm(onSourcesChanged);
        //    form.ShowDialog();
        //}
    }
}