using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using System.IO;

namespace spritesheetanimation
{
    // Animation frame class
    public class Frame
    {
        // Frame Number
        [XmlAttribute("Num")]
        public int Num;

        // Sub Image X positon in the Sprite Sheet
        [XmlAttribute("X")]
        public int X;
        
        // Sub Image Y positon in the Sprite Sheet
        [XmlAttribute("Y")]
        public int Y;

        // Sub Image Width
        [XmlAttribute("Width")]
        public int Width;

        // Sub Image Height
        [XmlAttribute("Height")]
        public int Height;

        // The X offset of sub image
        [XmlAttribute("OffSetX")]
        public int OffsetX;

        // The Y offset fo sub image
        [XmlAttribute("OffsetY")]
        public int OffsetY;

        // The duration between two frames
        [XmlAttribute("Duration")]
        public float Duration;
    }

    // Animaiton class to hold the name and frames
    public class Animation
    {
        // Animation Name
        [XmlAttribute("Name")]
        public string Name;

        // Animation Frame Rate
        [XmlAttribute("FrameRate")]
        public int FrameRate;

        public bool Loop;

        public bool Pingpong;

        // The Frames array in an animation
        [XmlArray("Frames"), XmlArrayItem("Frame", typeof(Frame))]
        public Frame[] Frames;
    }

    // The Sprite Texture stores the Sprite Sheet path.fr
    public class SpriteTexture
    {
        // The Sprite Sheet texture file path
        [XmlAttribute("Path")]
        public string Path;
    }

    // Aniamtion Set contains the Sprite Texture and Animaitons.
    [XmlRoot("Animations")]
    public class AnimationSet
    {
        // The sprite texture object
        [XmlElement("Texture", typeof(SpriteTexture))]
        public SpriteTexture SpriteTexture;

        // The animation array in the Animation Set
        [XmlElement("Animation", typeof(Animation))]
        public Animation[] Animations;
    }

    // Sprite Animation Manager class
    public static class SpriteAnimationManager
    {
        public static int AnimationCount;

        // Read the Sprite Sheet Description information from the description xml file
        public static AnimationSet Read(string Filename)
        {
            AnimationSet animationSet = new AnimationSet();

            // Create a XML reader for the sprite sheet animaiton description file
            using (System.Xml.XmlReader reader = System.Xml.XmlReader.Create(Filename))
            {
                // Create a XMLSerializer for the AnimationSet
                XmlSerializer serializer = new XmlSerializer(typeof(AnimationSet));

                // Deserialize the Animation Set from the XmlReader to the animation set object
                animationSet = (AnimationSet)serializer.Deserialize(reader);
            }

            // Count the animations to Animation Count
            AnimationCount = animationSet.Animations.Length;

            return animationSet;
        }
    }
}