using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
using Newtonsoft.Json;

namespace RecrownedAthenaeum.Pipeline
{
    class TextureAtlasDataReader : ContentTypeReader<SpecialTypes.TextureAtlas>
    {
        protected override SpecialTypes.TextureAtlas Read(ContentReader input, SpecialTypes.TextureAtlas existingInstance)
        {
            string serialized = input.ReadString();
            TextureAtlasData atlasData = JsonConvert.DeserializeObject<TextureAtlasData>(serialized);

            SpecialTypes.TextureAtlas atlas;
            Texture2D atlasTexture = input.ContentManager.Load<Texture2D>(atlasData.textureName);
            SpecialTypes.TextureAtlas.TextureAtlasRegion[] regions = new SpecialTypes.TextureAtlas.TextureAtlasRegion[atlasData.regions.Length];

            for (int regionID = 0; regionID < regions.Length; regionID++)
            {
                TextureAtlasData.AtlasRegionData regionData = atlasData.regions[regionID];
                SpecialTypes.NinePatch nPatch = null;
                if (regionData.ninePatchData != null)
                {
                    NinePatchData nPatchData = regionData.ninePatchData;
                    nPatch = new SpecialTypes.NinePatch(atlasTexture, nPatchData.left, nPatchData.right, nPatchData.bottom, nPatchData.bottom);
                }

                regions[regionID] = new SpecialTypes.TextureAtlas.TextureAtlasRegion(regionData.name, regionData.location, nPatch, atlasTexture);
            }

            atlas = new SpecialTypes.TextureAtlas(atlasTexture, regions);

            return atlas;
        }
    }
}