using System;
using System.Drawing;
using System.Windows.Forms;
using TweetDuck.Controls;
using TweetDuck.Utils;
using TweetLib.Core.Features.Plugins;
using TweetLib.Core.Features.Plugins.Enums;

namespace TweetDuck.Plugins{
    sealed partial class PluginControl : UserControl{
        private readonly PluginManager pluginManager;
        private readonly Plugin plugin;
        private readonly bool isConfigurable;
        
        private int nextHeight;

        public PluginControl(){
            InitializeComponent();
        }

        public PluginControl(PluginManager pluginManager, Plugin plugin) : this(){
            this.pluginManager = pluginManager;
            this.plugin = plugin;

            this.isConfigurable = pluginManager.IsPluginConfigurable(plugin);

            float dpiScale = this.GetDPIScale();

            if (dpiScale > 1F){
                Size = MaximumSize = new Size(MaximumSize.Width, MaximumSize.Height + 3);
            }
            
            this.labelName.Text = plugin.Name;
            this.labelDescription.Text = plugin.CanRun ? plugin.Description : $"This plugin requires TweetDuck {plugin.RequiredVersion} or newer.";
            this.labelAuthor.Text = string.IsNullOrWhiteSpace(plugin.Author) ? string.Empty : $"by {plugin.Author}";
            this.labelWebsite.Text = plugin.Website;
            this.labelVersion.Text = plugin.Version;
            
            this.labelType.LineHeight = BrowserUtils.Scale(11, dpiScale);

            UpdatePluginState();

            if (labelDescription.Text.Length == 0){
                labelDescription.Visible = false;
            }
            
            panelDescription_Resize(panelDescription, EventArgs.Empty);
        }

        private void timerLayout_Tick(object sender, EventArgs e){
            timerLayout.Stop();
            Height = nextHeight;
            ResumeLayout();
        }

        private void panelDescription_Resize(object sender, EventArgs e){
            SuspendLayout();
            
            int maxWidth = panelDescription.Width - (panelDescription.VerticalScroll.Visible ? SystemInformation.VerticalScrollBarWidth : 0);
            labelDescription.MaximumSize = new Size(maxWidth, int.MaxValue);

            Font font = labelDescription.Font;
            int descriptionLines = TextRenderer.MeasureText(labelDescription.Text, font, new Size(maxWidth, int.MaxValue), TextFormatFlags.WordBreak).Height / (font.Height - 1);
            
            int requiredLines = Math.Max(descriptionLines, 1 + (string.IsNullOrEmpty(labelVersion.Text) ? 0 : 1) + (isConfigurable ? 1 : 0));
            
            nextHeight = requiredLines switch{
                1 => MaximumSize.Height - 2 * (font.Height - 1),
                2 => MaximumSize.Height - 1 * (font.Height - 1),
                _ => MaximumSize.Height
            };

            if (nextHeight != Height){
                timerLayout.Start();
            }
            else{
                ResumeLayout();
            }
        }

        private void labelWebsite_Click(object sender, EventArgs e){
            if (labelWebsite.Text.Length > 0){
                BrowserUtils.OpenExternalBrowser(labelWebsite.Text);
            }
        }

        private void btnConfigure_Click(object sender, EventArgs e){
            pluginManager.ConfigurePlugin(plugin);
            ParentForm?.Close();
        }

        private void btnToggleState_Click(object sender, EventArgs e){
            pluginManager.Config.SetEnabled(plugin, !pluginManager.Config.IsEnabled(plugin));
            UpdatePluginState();
        }

        private void UpdatePluginState(){
            bool isEnabled = pluginManager.Config.IsEnabled(plugin) && plugin.CanRun;
            Color textColor = isEnabled ? Color.Black : Color.FromArgb(90, 90, 90);
            
            labelVersion.ForeColor = textColor;
            labelAuthor.ForeColor = textColor;
            labelWebsite.ForeColor = isEnabled ? Color.Blue : Color.FromArgb(90, 90, 249);

            if (plugin.Group == PluginGroup.Official){
                labelType.Text = "CORE";
                labelType.BackColor = isEnabled ? Color.FromArgb(154, 195, 217) : Color.FromArgb(185, 185, 185);
            }
            else{
                labelType.Text = "USER";
                labelType.BackColor = isEnabled ? Color.FromArgb(208, 154, 217) : Color.FromArgb(185, 185, 185);
            }

            if (plugin.CanRun){
                labelName.ForeColor = textColor;
                labelDescription.ForeColor = textColor;
                btnToggleState.Text = isEnabled ? "Disable" : "Enable";
                btnConfigure.Visible = isConfigurable;
                btnConfigure.Enabled = isEnabled;
            }
            else{
                labelName.ForeColor = Color.DarkRed;
                labelDescription.ForeColor = Color.DarkRed;
                btnToggleState.Visible = false;
                btnConfigure.Visible = false;
            }
        }
    }
}