using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Text;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using ImageCatalog_2;
using ImageCatalog_2.Commands;
using ImageCatalog_2.Services;
using MaddoShared;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging;

namespace ImageCatalog;

public partial class MainForm
{
    private readonly DataModel Model;

    private readonly ILogger<MainForm> _logger;

    private readonly ParametriSetup _parametriSetup;
    private readonly PicSettings _picSettings;

    public MainForm(DataModel model, ImageCreationStuff imageCreationStuff, PicSettings picSettings,
        ParametriSetup parametriSetup, ILogger<MainForm> logger)
    {
        Model = model;
        _parametriSetup = parametriSetup;
        _picSettings = picSettings;
        _logger = logger;

        _logger.LogDebug("Start");

        InitializeComponent();
        
        // Set this form as the control for thread marshalling in the DataModel
        Model.SetControl(this);
        
        BindControls();

        var version = Assembly.GetExecutingAssembly().GetName().Version;
        _Label27.Text = $"Version: {version.Major}.{version.Minor}.{version.Build}.{version.Revision}";
    }

    protected void BindControls()
    {
        // Bind buttons to ViewModel commands using command binding
        _btnCreaCatalogoAsync.BindCommand(Model.ProcessImagesCommand);
        button1.BindCommand(Model.ProcessImagesCommand);
        _Button2.BindCommand(Model.SelectSourceFolderCommand);
        _Button3.BindCommand(Model.SelectDestinationFolderCommand);
        _Button4.BindCommand(Model.SelectLogoFileCommand);
        _Button5.BindCommand(Model.SaveSettingsCommand);
        _Button6.BindCommand(Model.LoadSettingsCommand);
        _Button8.BindCommand(Model.SelectColorCommand);

        // Subscribe to ViewModel events for UI dialogs (these need UI context)
        Model.SelectSourceFolderRequested += OnSelectSourceFolderRequested;
        Model.SelectDestinationFolderRequested += OnSelectDestinationFolderRequested;
        Model.SelectLogoFileRequested += OnSelectLogoFileRequested;
        Model.SaveSettingsRequested += OnSaveSettingsRequested;
        Model.LoadSettingsRequested += OnLoadSettingsRequested;
        Model.SelectColorRequested += OnSelectColorRequested;
    }

    private void SetDefaults()
    {
        // Bind ComboBoxes to Model using proper data binding
        ComboBox1.DataSource = new List<string>(Model.VerticalPositions);
        ComboBox1.DataBindings.Add(new Binding("SelectedItem", bindingSource1, nameof(Model.VerticalPosition), 
            false, DataSourceUpdateMode.OnPropertyChanged));
        
        ComboBox2.DataSource = new List<string>(Model.HorizontalAlignments);
        ComboBox2.DataBindings.Add(new Binding("SelectedItem", bindingSource1, nameof(Model.HorizontalAlignment), 
            false, DataSourceUpdateMode.OnPropertyChanged));

        ComboBox3.DataSource = new List<string>(Model.AvailableFonts);
        ComboBox3.DataBindings.Add(new Binding("SelectedItem", bindingSource1, nameof(Model.FontName), 
            false, DataSourceUpdateMode.OnPropertyChanged));

        ComboBox4.DataSource = new List<string>(Model.HorizontalAlignments);
        ComboBox4.DataBindings.Add(new Binding("SelectedItem", bindingSource1, nameof(Model.LogoHorizontalPosition), 
            false, DataSourceUpdateMode.OnPropertyChanged));
        
        ComboBox5.DataSource = new List<string> { "Alto", "Centro", "Basso" };
        ComboBox5.DataBindings.Add(new Binding("SelectedItem", bindingSource1, nameof(Model.LogoVerticalPosition), 
            false, DataSourceUpdateMode.OnPropertyChanged));
        
        // Bind progress bar and status labels
        ProgressBar1.DataBindings.Add(new Binding("Maximum", bindingSource1, nameof(Model.ProgressBarMaximum),
            false, DataSourceUpdateMode.OnPropertyChanged));
        ProgressBar1.DataBindings.Add(new Binding("Value", bindingSource1, nameof(Model.ProgressBarValue),
            false, DataSourceUpdateMode.OnPropertyChanged));
        
        Label18.DataBindings.Add(new Binding("Text", bindingSource1, nameof(Model.ProcessedImagesCount),
            false, DataSourceUpdateMode.OnPropertyChanged));
        lblFotoTotaliNum.DataBindings.Add(new Binding("Text", bindingSource1, nameof(Model.TotalImagesCount),
            false, DataSourceUpdateMode.OnPropertyChanged));
        Label10.DataBindings.Add(new Binding("Text", bindingSource1, nameof(Model.ProcessingStatus),
            false, DataSourceUpdateMode.OnPropertyChanged));
    }


    private void Form1_Load(object sender, EventArgs e)
    {
        bindingSource1.DataSource = Model;
        Application.EnableVisualStyles();
        SetDefaults();

        _logger.LogInformation("Programma Avviato");
    }

    private string CalcTime(DateTime timeStart, DateTime timeStop, int numFoto)
    {
        long timediffH, timediffS;
        long timediffM;

        TimeSpan timeDiff = timeStop - timeStart;

        timediffM = (int)timeDiff.TotalMinutes;
        timediffS = (int)timeDiff.TotalSeconds;
        timediffH = (int)timeDiff.TotalHours;

        // timediffM = DateAndTime.DateDiff(DateInterval.Minute, timeStart, timeStop);
        // timediffS = DateAndTime.DateDiff(DateInterval.Second, timeStart, timeStop);
        // timediffH = DateAndTime.DateDiff(DateInterval.Hour, timeStart, timeStop);

        double fotoSec = numFoto / (double)timediffS;
        double fotoMin = numFoto / (double)timediffM;
        double fotoOra = numFoto / (double)timediffH;
        string s = "S: " + timediffS.ToString() + "; F/s: " +
                   fotoSec.ToString(
                       "0.000"); // + " F/m: " + fotoMin.ToString("0.00") + " F/h: " + fotoOra.ToString("0.00")
        return s;
    }

    private string SelectFolder(string startingFolder)
    {
        var dialog = new FolderBrowserDialog();
        dialog.InitialDirectory = startingFolder;
        if (dialog.ShowDialog() != DialogResult.OK) return string.Empty;

        return FixPath(dialog.SelectedPath);
    }

    private string FixPath(string path)
    {
        if (string.IsNullOrWhiteSpace(path))
        {
            return string.Empty;
        }

        // Trim leading/trailing quotes
        path = path.Trim().Trim('"');

        // Normalize directory separators
        path = path.Replace('/', Path.DirectorySeparatorChar)
            .Replace('\\', Path.DirectorySeparatorChar);

        // Remove trailing separators then add one back
        path = path.TrimEnd(Path.DirectorySeparatorChar) + Path.DirectorySeparatorChar;

        return path;
    }

    private void OnSelectSourceFolderRequested(object sender, EventArgs e)
    {
        var dialogResult = SelectFolder(Model.SourcePath);
        if (!string.IsNullOrWhiteSpace(dialogResult))
        {
            Model.SourcePath = dialogResult;
        }
    }

    private void OnSelectDestinationFolderRequested(object sender, EventArgs e)
    {
        var dialogResult = SelectFolder(Model.DestinationPath);
        if (!string.IsNullOrWhiteSpace(dialogResult))
        {
            Model.DestinationPath = dialogResult;
        }
    }

    private void OnSelectLogoFileRequested(object sender, EventArgs e)
    {
        var dialog = new OpenFileDialog();
        dialog.Filter = "Image Files|*.jpg;*.jpeg;*.png;*.bmp;*.gif";
        if (Model.LogoFile.Length > 0)
        {
            dialog.FileName = Model.LogoFile;
        }
        
        if (dialog.ShowDialog() == DialogResult.OK)
        {
            Model.LogoFile = dialog.FileName;
            UpdateLogoPictureBox(Model.LogoFile);
        }
    }

    private async void OnSaveSettingsRequested(object sender, string e)
    {
        var saveDialog = new SaveFileDialog
        {
            Filter = "Setup (*.xml)|*.xml|All valid files (*.*)|*.*",
            FilterIndex = 0,
            RestoreDirectory = true
        };
        
        if (saveDialog.ShowDialog() != DialogResult.OK) return;

        await Model.SaveSettingsToFileAsync(saveDialog.FileName);
        Text = "Image Catalog - " + Path.GetFileName(saveDialog.FileName);
    }

    private async void OnLoadSettingsRequested(object sender, string e)
    {
        var openDialog = new OpenFileDialog
        {
            Filter = "Setup (*.xml)|*.xml|All valid files (*.*)|*.*",
            FilterIndex = 0,
            RestoreDirectory = true
        };

        if (openDialog.ShowDialog() != DialogResult.OK) return;

        try
        {
            await Model.LoadSettingsFromFileAsync(openDialog.FileName);
            
            // Explicitly ensure UI is enabled after loading
            Model.UiEnabled = true;
            
            // Update logo preview if logo file exists
            if (File.Exists(Model.LogoFile))
            {
                UpdateLogoPictureBox(Model.LogoFile);
            }

            Text = "Image Catalog - " + Path.GetFileName(openDialog.FileName);
            
            _logger.LogInformation($"Settings loaded successfully from {openDialog.FileName}");
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Error loading settings");
            MessageBox.Show($"Error loading settings: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }

    private void OnSelectColorRequested(object sender, EventArgs e)
    {
        var colorDialog = new ColorDialog
        {
            AllowFullOpen = true
        };

        if (!string.IsNullOrWhiteSpace(Model.TextColorRGB))
        {
            try
            {
                colorDialog.Color = ColorTranslator.FromHtml(Model.TextColorRGB);
            }
            catch
            {
                // Invalid color, use default
            }
        }

        if (colorDialog.ShowDialog() == DialogResult.OK)
        {
            Model.TextColorRGB = ColorTranslator.ToHtml(colorDialog.Color);
            TextBox34.BackColor = colorDialog.Color;
        }
    }

    private void UpdateLogoPictureBox(string logoPath)
    {
        try
        {
            PictureBox1.Image = Image.FromFile(logoPath);
            if (PictureBox1.Image.Height >= PictureBox1.Image.Width)
            {
                PictureBox1.Height = 160;
                PictureBox1.Width = (int)(160 * PictureBox1.Image.Width / (double)PictureBox1.Image.Height);
            }
            else
            {
                PictureBox1.Width = 160;
                PictureBox1.Height = (int)(160 * PictureBox1.Image.Height / (double)PictureBox1.Image.Width);
            }
        }
        catch
        {
            // Image loading failed, ignore
        }
    }

    private void setLabel18Text(string text)
    {
        if (Label18.InvokeRequired)
        {
            Label18.Invoke(new Action<string>(setLabel18Text), text);
        }
        else
        {
            Label18.Text = text;
        }
    }
}

public class PicInfo
{
    public DirectoryInfo DirSource, DirDest, DirDestStart;
    public string NomeImmagine;

    public PicInfo(DirectoryInfo Dir_Source, DirectoryInfo Dir_Dest, DirectoryInfo Dir_DestStart,
        string Nome_Immagine)
    {
        DirSource = Dir_Source;
        DirDest = Dir_Dest;
        DirDestStart = Dir_DestStart;
        NomeImmagine = Nome_Immagine;
    }
}