using System;
using System.ComponentModel;
using System.Drawing;
using System.Threading.Tasks;
using System.Windows.Forms;
using BukkuBuddy.DTOs.SaveFile;
using BukkuBuddy.Services;
using RyzStudio;
using RyzStudio.Windows.Forms;
using RyzStudio.Windows.ThemedForms;
using RyzStudio.Windows.ThemedForms.ButtonTextBox;

namespace BukkuBuddy.Forms
{
    public class EditBookmarkForm : Form
    {
        private Label label1;
        private ThClearableTextBox textBox1;
        private Label label2;
        private Label label3;
        private ThToolbarMemoBox memoBox1;
        private Label label4;
        private ThIconButtonTextBox textBox2;
        private PictureBox pictureBox1;
        private System.ComponentModel.IContainer components;
        private ThClearableTextBox textBox3;
        private RyzStudio.Windows.ThemedForms.Composite.DialogFooter dialogFooter1;
        private THorizontalSeparator horizontalSeparator1;

        private readonly WebPageService _webPageService;

        private bool isBusy = false;
        private App6Options.Item result = null;


        public EditBookmarkForm(App6Options.Item model, App6Options options)
        {
            InitializeComponent();

            UISetup.Dialog(this);

            this.Text = (result == null) ? "Add Bookmark" : "Edit Bookmark";

            result = model;

            _webPageService = new WebPageService(options.AllowUnsafeSSL, options.Timeout, options.AllowCookies, options.AllowRedirects);
        }

        private void InitializeComponent()
        {
            components = new Container();
            label1 = new Label();
            textBox1 = new ThClearableTextBox();
            label2 = new Label();
            label3 = new Label();
            memoBox1 = new ThToolbarMemoBox();
            label4 = new Label();
            textBox2 = new ThIconButtonTextBox();
            pictureBox1 = new PictureBox();
            textBox3 = new ThClearableTextBox();
            dialogFooter1 = new RyzStudio.Windows.ThemedForms.Composite.DialogFooter();
            horizontalSeparator1 = new THorizontalSeparator();
            ((ISupportInitialize)pictureBox1).BeginInit();
            SuspendLayout();
            //
            // label1
            //
            label1.AutoSize = true;
            label1.BackColor = Color.Transparent;
            label1.ForeColor = SystemColors.ControlText;
            label1.Location = new Point(10, 20);
            label1.Margin = new Padding(0);
            label1.Name = "label1";
            label1.Padding = new Padding(0, 8, 0, 0);
            label1.Size = new Size(29, 23);
            label1.TabIndex = 153;
            label1.Text = "Title";
            label1.TextAlign = ContentAlignment.MiddleLeft;
            //
            // textBox1
            //
            textBox1.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
            textBox1.BackColor = Color.Transparent;
            textBox1.ClearedValue = "";
            textBox1.EnableMovable = false;
            textBox1.Icon = "O";
            textBox1.IconSize = 13F;
            textBox1.Location = new Point(95, 20);
            textBox1.Name = "textBox1";
            textBox1.Size = new Size(280, 32);
            textBox1.TabIndex = 0;
            textBox1.TabStop = false;
            textBox1.UseSystemPasswordChar = false;
            //
            // label2
            //
            label2.AutoSize = true;
            label2.BackColor = Color.Transparent;
            label2.ForeColor = SystemColors.ControlText;
            label2.Location = new Point(9, 61);
            label2.Margin = new Padding(0);
            label2.Name = "label2";
            label2.Padding = new Padding(0, 8, 0, 0);
            label2.Size = new Size(49, 23);
            label2.TabIndex = 193;
            label2.Text = "Address";
            label2.TextAlign = ContentAlignment.MiddleLeft;
            //
            // label3
            //
            label3.AutoSize = true;
            label3.BackColor = Color.Transparent;
            label3.ForeColor = SystemColors.ControlText;
            label3.Location = new Point(9, 104);
            label3.Margin = new Padding(0);
            label3.Name = "label3";
            label3.Padding = new Padding(0, 8, 0, 0);
            label3.Size = new Size(67, 23);
            label3.TabIndex = 195;
            label3.Text = "Description";
            label3.TextAlign = ContentAlignment.MiddleLeft;
            //
            // memoBox1
            //
            memoBox1.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
            memoBox1.BackColor = Color.Transparent;
            memoBox1.ClearedValue = "";
            memoBox1.EnableMovable = false;
            memoBox1.Location = new Point(95, 158);
            memoBox1.Name = "memoBox1";
            memoBox1.ReadOnly = false;
            memoBox1.ScrollBars = ScrollBars.Vertical;
            memoBox1.Size = new Size(280, 283);
            memoBox1.TabIndex = 3;
            memoBox1.TabStop = false;
            memoBox1.WordWrap = false;
            //
            // label4
            //
            label4.AutoSize = true;
            label4.BackColor = Color.Transparent;
            label4.ForeColor = SystemColors.ControlText;
            label4.Location = new Point(10, 158);
            label4.Margin = new Padding(0);
            label4.Name = "label4";
            label4.Padding = new Padding(0, 8, 0, 0);
            label4.Size = new Size(38, 23);
            label4.TabIndex = 198;
            label4.Text = "Notes";
            label4.TextAlign = ContentAlignment.MiddleLeft;
            //
            // textBox2
            //
            textBox2.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
            textBox2.BackColor = Color.Transparent;
            textBox2.EnableMovable = false;
            textBox2.Icon = "M";
            textBox2.IconSize = 13F;
            textBox2.Location = new Point(115, 62);
            textBox2.Name = "textBox2";
            textBox2.Size = new Size(260, 32);
            textBox2.TabIndex = 1;
            textBox2.TabStop = false;
            textBox2.UseSystemPasswordChar = false;
            textBox2.OnButtonClick += textBox2_OnButtonClick;
            //
            // pictureBox1
            //
            pictureBox1.BackColor = Color.White;
            pictureBox1.ErrorImage = null;
            pictureBox1.InitialImage = null;
            pictureBox1.Location = new Point(61, 20);
            pictureBox1.Name = "pictureBox1";
            pictureBox1.Size = new Size(32, 32);
            pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
            pictureBox1.TabIndex = 201;
            pictureBox1.TabStop = false;
            pictureBox1.MouseClick += pictureBox1_MouseClick;
            pictureBox1.MouseDoubleClick += pictureBox1_MouseDoubleClick;
            //
            // textBox3
            //
            textBox3.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
            textBox3.BackColor = Color.Transparent;
            textBox3.ClearedValue = "";
            textBox3.EnableMovable = false;
            textBox3.Icon = "O";
            textBox3.IconSize = 13F;
            textBox3.Location = new Point(115, 104);
            textBox3.Name = "textBox3";
            textBox3.Size = new Size(260, 32);
            textBox3.TabIndex = 203;
            textBox3.TabStop = false;
            textBox3.UseSystemPasswordChar = false;
            //
            // dialogFooter1
            //
            dialogFooter1.BackColor = Color.FromArgb(240, 240, 240);
            dialogFooter1.Dock = DockStyle.Bottom;
            dialogFooter1.EnableMovable = false;
            dialogFooter1.IsBusy = false;
            dialogFooter1.Location = new Point(0, 451);
            dialogFooter1.Name = "dialogFooter1";
            dialogFooter1.Size = new Size(384, 70);
            dialogFooter1.TabIndex = 210;
            dialogFooter1.TabStop = false;
            //
            // horizontalSeparator1
            //
            horizontalSeparator1.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
            horizontalSeparator1.Location = new Point(5, 141);
            horizontalSeparator1.Name = "horizontalSeparator1";
            horizontalSeparator1.Size = new Size(375, 10);
            //
            // EditBookmarkForm
            //
            AutoScaleDimensions = new SizeF(7F, 15F);
            AutoScaleMode = AutoScaleMode.Font;
            BackColor = Color.White;
            ClientSize = new Size(384, 521);
            Controls.Add(horizontalSeparator1);
            Controls.Add(pictureBox1);
            Controls.Add(dialogFooter1);
            Controls.Add(textBox3);
            Controls.Add(textBox2);
            Controls.Add(memoBox1);
            Controls.Add(label4);
            Controls.Add(label3);
            Controls.Add(label2);
            Controls.Add(textBox1);
            Controls.Add(label1);
            KeyPreview = true;
            MinimumSize = new Size(400, 560);
            Name = "EditBookmarkForm";
            Text = "Edit Bookmark";
            ((ISupportInitialize)pictureBox1).EndInit();
            ResumeLayout(false);
            PerformLayout();
        }

        protected override void OnShown(EventArgs e)
        {
            base.OnShown(e);

            textBox1.Text = result?.Title?.Trim() ?? string.Empty;
            textBox2.Text = result?.Address?.Trim() ?? string.Empty;
            textBox3.Text = result?.Description?.Trim() ?? string.Empty;
            memoBox1.Text = result?.Notes?.Trim() ?? string.Empty;

            if (result != null)
            {
                try
                {
                    if (result.Icon != null)
                    {
                        if (result.Icon.Width > 16)
                        {
                            result.Icon = RyzStudio.Drawing.ImageEditor.Resize(result.Icon, 16, 16);
                        }
                    }

                    pictureBox1.Image = result.Icon;
                }
                catch (Exception)
                {
                    pictureBox1.Image = result.Icon = null;
                }
            }

            textBox2.Focus();
        }

        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            base.OnFormClosing(e);

            if (this.IsBusy)
            {
                e.Cancel = true;
            }
        }

        [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public App6Options.Item Result
        {
            get
            {
                if (result == null)
                {
                    result = new App6Options.Item();
                }

                result.Title = textBox1.Text?.Trim() ?? string.Empty;
                result.Address = textBox2.Text?.Trim() ?? string.Empty;
                result.Description = textBox3.Text?.Trim() ?? string.Empty;

                try
                {
                    result.Icon = pictureBox1.Image;
                }
                catch (Exception)
                {
                    // do nothing
                }

                result.Notes = memoBox1.Text?.Trim() ?? string.Empty;

                return result;
            }
        }

        protected bool IsBusy
        {
            get => isBusy;
            set
            {
                isBusy = value;

                UIControl.SetEnable(textBox1, !isBusy);
                UIControl.SetEnable(textBox2, !isBusy);
                UIControl.SetEnable(textBox3, !isBusy);
                UIControl.SetEnable(memoBox1, !isBusy);
                dialogFooter1.IsBusy = isBusy;
            }
        }


        /// <summary>
        /// Retrieve favicon
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private async void pictureBox1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (this.IsBusy)
            {
                return;
            }

            if (e.Button == MouseButtons.Left)
            {
                if (string.IsNullOrWhiteSpace(textBox2.Text))
                {
                    return;
                }

                DialogResult result = DialogResult.Yes;

                if (pictureBox1.Image != null)
                {
                    result = MessageBox.Show("Do you want to (try to) retrieve the favicon?", "Retrieve Favicon", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);
                }

                if (result == DialogResult.Yes)
                {
                    await Task.Run(async () =>
                    {
                        this.IsBusy = true;

                        var image = await GetFavicon(textBox2.Text);

                        UIControl.SetImage(pictureBox1, image);

                        this.IsBusy = false;
                    });
                }
            }
        }

        /// <summary>
        /// Clear favicon
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void pictureBox1_MouseClick(object sender, MouseEventArgs e)
        {
            if (this.IsBusy)
            {
                return;
            }

            if (e.Button == MouseButtons.Right)
            {
                if (pictureBox1.Image == null)
                {
                    return;
                }

                //if (MessageBox.Show("Are you sure you want to clear the favicon?", "Clear Favicon", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question) == DialogResult.Yes)
                //{
                    pictureBox1.Image = null;
                //}
            }
        }

        private async void textBox2_OnButtonClick(object sender, EventArgs e)
        {
            if (this.IsBusy)
            {
                return;
            }

            this.IsBusy = true;

            await Task.Run(async () =>
            {
                var result = await UpdateBookmarkInfo(textBox2.Text);
                if (!result.Success)
                {
                    MessageBox.Show(result.Message, "Update Bookmark", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            });

            this.IsBusy = false;

            textBox2.Focus();
        }

        private async Task<Image> GetFavicon(string url)
        {
            if (!_webPageService.IsValidUrl(url))
            {
                return null;
            }

            HtmlAgilityPack.HtmlDocument htmlDocument = null;

            try
            {
                htmlDocument = await _webPageService.GetDocument(url);
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message, "Update Icon", MessageBoxButtons.OK, MessageBoxIcon.Error);

                return null;
            }

            if (htmlDocument == null)
            {
                return null;
            }

            var faviconUrl = _webPageService.ParseFavicon(htmlDocument);
            if (string.IsNullOrWhiteSpace(faviconUrl))
            {
                return null;
            }

            var favicon = await _webPageService.GetImage(faviconUrl);
            if (favicon != null)
            {
                if (favicon.Width > 16)
                {
                    favicon = RyzStudio.Drawing.ImageEditor.Resize(favicon, 16, 16);
                }
            }

            return favicon;
        }

        private async Task<MethodResult> UpdateBookmarkInfo(string url)
        {
            if (!_webPageService.IsValidUrl(url))
            {
                return MethodResult.Error("Invalid URL.");
            }

            HtmlAgilityPack.HtmlDocument htmlDocument = null;

            try
            {
                htmlDocument = await _webPageService.GetDocument(url);
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message, "Update Icon", MessageBoxButtons.OK, MessageBoxIcon.Error);

                return MethodResult.Error(exc.Message);
            }

            if (htmlDocument == null)
            {
                return null;
            }

            var title = _webPageService.ParseTitle(htmlDocument) ?? string.Empty;
            var description = _webPageService.ParseDescription(htmlDocument) ?? string.Empty;

            UIControl.SetText(textBox1, title);
            UIControl.SetText(textBox3, description);

            var faviconUrl = _webPageService.ParseFavicon(htmlDocument);
            if (!string.IsNullOrWhiteSpace(faviconUrl))
            {
                var favicon = await _webPageService.GetImage(faviconUrl);
                if (favicon != null)
                {
                    if (favicon.Width > 16)
                    {
                        favicon = RyzStudio.Drawing.ImageEditor.Resize(favicon, 16, 16);
                    }
                }

                UIControl.SetImage(pictureBox1, favicon);
            }

            return MethodResult.Create();
        }

    }
}