using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using MatterHackers.Agg;
using MatterHackers.Agg.Transform;
using MatterHackers.Agg.Image;
using MatterHackers.Agg.VertexSource;
using MatterHackers.Agg.UI;
using MatterHackers.Agg.Font;
using MatterHackers.VectorMath;

using MatterHackers.MatterControl;
using MatterHackers.MatterControl.PrintQueue;
using MatterHackers.MatterControl.DataStorage;

namespace MatterHackers.MatterControl
{

    public class ActiveTheme
    {
        static ActiveTheme globalInstance;
        private Theme loadedTheme;
        private List<Theme> availableThemes;
        private int defaultThemeIndex = 1;
        private int activeThemeIndex = -1;

        public RootedObjectEventHandler ThemeChanged = new RootedObjectEventHandler();

        public List<Theme> AvailableThemes
        {
            get
            {
                if (this.availableThemes == null)
                {
                    this.availableThemes = getAvailableThemes();
                }
                return availableThemes;
            }
        }

        public RGBA_Bytes TransparentDarkOverlay
        {
            get
            {
                return new RGBA_Bytes(0,0,0,50);
            }
        }

        public RGBA_Bytes TransparentLightOverlay
        {
            get
            {
                return new RGBA_Bytes(255,255,255,50);
            }
        }

        public RGBA_Bytes TabLabelSelected
        {
            get
            {
                return loadedTheme.tabLabelSelectedColor;
            }
        }

        public RGBA_Bytes TabLabelUnselected
        {
            get
            {
                return loadedTheme.tabLabelUnselectedColor;
            }
        }


        public RGBA_Bytes PrimaryBackgroundColor
        {
            get
            {
                return loadedTheme.primaryBackgroundColor;
            }
        }

        public RGBA_Bytes SecondaryBackgroundColor
        {
            get
            {
                return loadedTheme.secondaryBackgroundColor;
            }
        }

        public RGBA_Bytes PrimaryTextColor
        {
            get
            {
                return loadedTheme.primaryTextColor;
            }
        }

        public RGBA_Bytes PrimaryAccentColor
        {
            get
            {
                return loadedTheme.primaryAccentColor;
            }
        }


        public RGBA_Bytes SecondaryAccentColor
        {
            get
            {
                return loadedTheme.secondaryAccentColor;
            }
        }

        private void OnThemeChanged(EventArgs e)
        {
            ThemeChanged.CallEvents(this, e);
        }

        public ActiveTheme()
        {
            //Load the default theme by index
            if (UserSettings.Instance.get("ActiveThemeIndex") == null)
            {
                UserSettings.Instance.set("ActiveThemeIndex", defaultThemeIndex.ToString());
            }

            int themeIndex;
            try
            {
                themeIndex = Convert.ToInt32(UserSettings.Instance.get("ActiveThemeIndex"));
            }
            catch
            {
                themeIndex = defaultThemeIndex;
            }

            LoadThemeSettings(themeIndex);
        }

        public static ActiveTheme Instance
        {
            get
            {
                if (globalInstance == null)
                {
                    globalInstance = new ActiveTheme();
                }
                return globalInstance;
            }
        }

        public void LoadThemeSettings(int index)
        {
            //Validate new theme selection and change theme
            if (index > -1 && index < AvailableThemes.Count)
            {
                if (activeThemeIndex != index)
                {
                    this.loadedTheme = this.AvailableThemes[index];
                    this.activeThemeIndex = index;
                    OnThemeChanged(null);
                }
            }
            else
            {
                throw new Exception("Invalid theme selection");
            }
        }


        private List<Theme> getAvailableThemes()
        {
            //Generate a list of available theme definitions
            List<Theme> themeList = new List<Theme>();
            themeList.Add(new Theme("Blue", new RGBA_Bytes(0, 75, 139), new RGBA_Bytes(0, 103, 190)));

            themeList.Add(new Theme("Teal", new RGBA_Bytes(0, 130, 153), new RGBA_Bytes(0, 173, 204)));
            
			themeList.Add(new Theme("Green", new RGBA_Bytes(0, 138, 23), new RGBA_Bytes(0, 189, 32)));
			themeList.Add(new Theme("Light Blue", new RGBA_Bytes(93, 178, 255), new RGBA_Bytes(144, 202, 255)));
			themeList.Add(new Theme("Orange", new RGBA_Bytes(255, 129, 25), new RGBA_Bytes(255, 157, 76)));
            themeList.Add(new Theme("Purple", new RGBA_Bytes(70, 23, 180), new RGBA_Bytes(104, 51, 229)));
			themeList.Add(new Theme("Red", new RGBA_Bytes(172, 25, 61), new RGBA_Bytes(217, 31, 77)));
			themeList.Add(new Theme("Pink", new RGBA_Bytes(220, 79, 173), new RGBA_Bytes(233, 143, 203)));
			themeList.Add(new Theme("Grey", new RGBA_Bytes(88, 88, 88), new RGBA_Bytes(114, 114, 114)));
			themeList.Add(new Theme("Pink", new RGBA_Bytes(140, 0, 149), new RGBA_Bytes(188,0,200)));
			return themeList;
        }
    }

    public class Theme
    {
        public RGBA_Bytes primaryAccentColor;
        public RGBA_Bytes secondaryAccentColor;
        public RGBA_Bytes primaryTextColor;
        public RGBA_Bytes secondaryTextColor;
        public RGBA_Bytes primaryBackgroundColor;
        public RGBA_Bytes secondaryBackgroundColor;
        public RGBA_Bytes tabLabelSelectedColor;
        public RGBA_Bytes tabLabelUnselectedColor;
        public string name;

        public Theme(string name, RGBA_Bytes primary, RGBA_Bytes secondary, bool darkTheme = true)
        {
            this.name = name;

            if (darkTheme)
            {
                this.primaryAccentColor = primary;
                this.secondaryAccentColor = secondary;
                
                this.primaryBackgroundColor = new RGBA_Bytes(68, 68, 68);
                this.secondaryBackgroundColor = new RGBA_Bytes(51, 51, 51);
                this.tabLabelSelectedColor = new RGBA_Bytes(255, 255, 255);
                this.tabLabelUnselectedColor = new RGBA_Bytes(200, 200, 200);
                this.primaryTextColor = new RGBA_Bytes(255, 255, 255);

            }
            else
            {
                this.primaryAccentColor = secondary;
                this.secondaryAccentColor = primary;
                
                this.primaryBackgroundColor = new RGBA_Bytes(169, 169, 169);
                this.secondaryBackgroundColor = new RGBA_Bytes(208, 208, 208);
                this.tabLabelSelectedColor = new RGBA_Bytes(255, 255, 255);
                this.tabLabelUnselectedColor = new RGBA_Bytes(200, 200, 200);
                this.primaryTextColor = new RGBA_Bytes(255, 255, 255);
            }
        }
    }
}