using Cryville.Common.Unity;
using Cryville.Common;
using Cryville.Crtr.Extension;
using Newtonsoft.Json;
using System.IO;
using UnityEngine;

namespace Cryville.Crtr.Browsing.Legacy {
	internal class LegacyChartResourceManager : LegacyResourceManager<LegacyChartDetail> {
		protected override string Extension { get { return ".umgc"; } }

		public LegacyChartResourceManager(string rootPath) : base(rootPath) { }

		protected override string GetSubRootPath(string rootPath) {
			return Path.Combine(rootPath, "charts");
		}
		protected override LegacyChartDetail GetMeta(DirectoryInfo dir) {
			ChartMeta meta = null;
			AsyncDelivery<Texture2D> cover = null;
			var metaFile = new FileInfo(Path.Combine(dir.FullName, Extension));
			if (metaFile.Exists) {
				using (var reader = new StreamReader(metaFile.FullName)) {
					meta = JsonConvert.DeserializeObject<ChartMeta>(reader.ReadToEnd());
				}
				if (meta.cover != null && meta.cover != "") {
					var coverFile = dir.GetFiles(meta.cover);
					if (coverFile.Length > 0) {
						cover = new AsyncDelivery<Texture2D>();
						var task = new LoadTextureTask(PlatformConfig.FileProtocolPrefix + coverFile[0].FullName, cover.Deliver);
						cover.CancelSource = task.Cancel;
						Game.NetworkTaskWorker.SubmitNetworkTask(task);
					}
				}
			}
			return new LegacyChartDetail {
				Cover = cover,
				Meta = meta,
			};
		}
	}
}