using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace MSGer.tk
{
    public class Theme : IPackable, IPackWithDefaults, IPackWithSave
    {
        public void Save(string themepath)
        {
            //2015.05.03.
            var fs = File.Open(themepath, FileMode.Create);
            var bw = new BinaryWriter(fs);
            bw.Write(Name); //Név
            bw.Write(Description); //Leírás
            bw.Write(Creators); //Készítő(k)
            bw.Write(Controls.Count);
            foreach (var pair in Controls) //2015.07.03.
            { //2015.07.03.
                bw.Write(pair.Key.AssemblyQualifiedName); //2015.07.05.
                pair.Value.Save(bw);
            }
        }
        private Theme()
        { //2015.04.11.

        }
        public Dictionary<Type, List<Control>> ControlsByType = new Dictionary<Type, List<Control>>(); //2015.07.03.
        public static void ApplyTheme(Type onlythis = null)
        { //2015.07.03.
            var action = new Action<Type, List<Control>>((type, list) =>
            {
                foreach (Control control in list)
                    SkinControl(control);
            });
            if (onlythis == null)
            {
                foreach (var item in CurrentTheme.ControlsByType)
                    action(item.Key, item.Value);
            }
            else
                action(onlythis, CurrentTheme.ControlsByType[onlythis]);
        }

        public static void SkinControl(Control control)
        {
            using (var gr = control.CreateGraphics()) //2015.07.03.
                SkinThis(control.GetType(), gr); //2015.07.03.

        }

        //TODO: (2015.04.11.) Ne csak képeket tudjon kezelni, háttérszíneket, előtérszíneket, akár betűméretet/típust is
        //TODO: (2015.04.11.) Egyedi betűtípusokat is - Talán
        public Dictionary<Type, ThemeControl> Controls = new Dictionary<Type, ThemeControl>(); //2015.07.03.
        public static List<Theme> Themes = new List<Theme>();
        private static Theme currenttheme; //2015.05.22.
        public static Theme CurrentTheme
        {
            get
            { //2015.05.22.
                if (currenttheme == null)
                {
                    currenttheme = Themes.FirstOrDefault(entry => entry.Name == Storage.Settings[SettingType.Theme]); //Single-->FirstOrDefault: 2015.06.06.
                }
                return currenttheme;
            }
            set
            { //2015.05.22.
                currenttheme = value;
                Storage.Settings[SettingType.Theme] = currenttheme.Name;
            }
        }

        public string Name;
        public string Description;
        public string Creators;

        public bool LoadFromPack(string filename)
        {
            var fs = File.Open(filename, FileMode.Open);
            var br = new BinaryReader(fs);
            if (fs.Length < 5)
                return false; //2015.07.05.
            Name = br.ReadString(); //Név
            Description = br.ReadString(); //Leírás
            Creators = br.ReadString(); //Készítő(k)
            int count = br.ReadInt32(); //2015.05.03.
            for (int i = 0; i < count; i++)
            {
                string tmp = br.ReadString();
                Type type = Type.GetType(tmp);
                ThemeControl control = new ThemeControl(br);
                Controls.Add(type, control); //2015.07.03.
            }
            Themes.Add(this);
            if (CurrentTheme == null) //TODO: TMP
                CurrentTheme = this; //2015.07.05.
            return true;
        }

        public void UnloadFromPack()
        {
            //Ha törli az egységes listából, törli az egész rendszerből
        }

        public static void SkinThis(Type controltype, Graphics graphics) //controltype: 2015.07.03.
        { //2015.05.22.
            if (CurrentTheme == null)
                return;
            if(!CurrentTheme.Controls.ContainsKey(controltype))
            { //2015.07.03.
                //MessageBox.Show("Cannot theme this control type: " + controltype); //TODO: Több téma támogatása egyszerre (Minecraft resource pack)
                return;
            }
            ThemeControl control = CurrentTheme.Controls[controltype];
            switch (control.ControlType)
            {
                case ThemeControlTypes.Colors:
                    graphics.FillRectangle(new SolidBrush(control.Color), graphics.ClipBounds); //2015.07.05.
                    break;
                case ThemeControlTypes.Dynamic: //2015.07.05.
                    IScriptTheme script = null; //TODO
                    script.SkinThis(controltype, control, graphics);
                    break;
                case ThemeControlTypes.Image: //2015.07.05.
                    graphics.DrawImage(control.Image, new Rectangle(new Point(), graphics.ClipBounds.Size.ToSize()));
                    break;
            }
        }
        public static void SetRenderer(ToolStrip toolstrip) //2015.07.05.
        { //TODO

        }
        public override string ToString()
        { //2015.07.03.
            return Name;
        }

        public void AddPack(string filename)
        {
            FileName = filename;
            Name = Path.GetFileNameWithoutExtension(filename); //2015.07.05.
            Description = ""; //TODO - 2015.07.05.
            Creators = ""; //2015.07.05.
        }

        public void SavePack(string filename)
        { //2015.07.03.
            Save(filename);
        }

        public string FileName
        { //2015.07.03.
            get;
            set;
        }
    }
}