using System;
using System.IO;
using UnityEngine;

namespace ModTool.Shared
{
	/// <summary>
	/// Class that stores a Mod's name, author, description, version, path and supported platforms.
	/// </summary>
	[Serializable]
	public class ModInfo
	{
		/// <summary>
		/// Name
		/// </summary>
		public string name
		{
			get
			{
				return _name;
			}
		}

		/// <summary>
		/// Supported platforms for this mod.
		/// </summary>
		public ModPlatform platforms
		{
			get
			{
				return _platforms;
			}
		}
		
		/// <summary>
		/// The Mod's available content types.
		/// </summary>
		public ModContent content
		{
			get
			{
				return _content;
			}
		}

		/// <summary>
		/// Mod author.
		/// </summary>
		public string author
		{
			get
			{
				return _author;
			}
		}

		/// <summary>
		/// Mod description.
		/// </summary>
		public string description
		{
			get
			{
				return _description;
			}
		}

		/// <summary>
		/// Mod version.
		/// </summary>
		public string version
		{
			get
			{
				return _version;
			}
		}

		/// <summary>
		/// The version of Unity that was used to export this mod.
		/// </summary>
		public string unityVersion
		{
			get
			{
				return _unityVersion;
			}
		}

		/// <summary>
		/// The version of Unity that was used to export this mod.
		/// </summary>
		public string creationDate
		{
			get
			{
				return _creationDate;
			}
		}
		
		/// <summary>
		/// Should this mod be enabled.
		/// </summary>
		public bool isEnabled
		{
			get
			{
				return _isEnabled;
			}
			set
			{
				_isEnabled = value;
			}
		}

		/// <summary>
		/// Location of mod
		/// </summary>
		public string path { get; private set; }

		[SerializeField]
		private string _name;

		[SerializeField]
		private string _author;

		[SerializeField]
		private string _description;

		[SerializeField]
		private string _version;

		[SerializeField]
		private string _unityVersion;

		[SerializeField]
		private string _creationDate;

		[SerializeField]
		private ModPlatform _platforms;

		[SerializeField]
		private ModContent _content;

		[SerializeField]
		private bool _isEnabled;

		/// <summary>
		/// Initialize a new ModInfo.
		/// </summary>
		/// <param name="name">The Mod's name.</param>
		/// <param name="author">The Mod's author.</param>
		/// <param name="description">The Mod's description.</param>
		/// <param name="platforms">The Mod's supported platforms.</param>
		/// <param name="content">The Mod's available content types.</param>
		/// <param name="version">The Mod's version</param>
		/// <param name="unityVersion"> The version of Unity that the Mod was exported with.</param>
		/// <param name="creationDate"> The date this was created.</param>
		public ModInfo(
			string name,
			string author,
			string description,
			string version,
			string unityVersion,
			ModPlatform platforms,
			ModContent content)
		{
			_author = author;
			_description = description;
			_name = name;
			_platforms = platforms;
			_content = content;
			_version = version;
			_unityVersion = unityVersion;
			_creationDate = creationDate;

			isEnabled = false;
		}
		
		/// <summary>
		/// Save this ModInfo.
		/// </summary>
		public void Save()
		{
			if (!string.IsNullOrEmpty(path))
				Save(path, this);
		}

		/// <summary>
		/// Save a ModInfo.
		/// </summary>
		/// <param name="path">The path to save the ModInfo to.</param>
		/// <param name="modInfo">The ModInfo to save.</param>
		public static void Save(string path, ModInfo modInfo)
		{
			string json = JsonUtility.ToJson(modInfo, true);

			File.WriteAllText(path, json);		 
		}

		/// <summary>
		/// Load a ModInfo.
		/// </summary>
		/// <param name="path">The path to load the ModInfo from.</param>
		/// <returns>The loaded Modinfo, if succeeded. Null otherwise.</returns>
		public static ModInfo Load(string path)
		{
			path = Path.GetFullPath(path);

			if (File.Exists(path))
			{   
				try
				{
					string json = File.ReadAllText(path);

					ModInfo modInfo = JsonUtility.FromJson<ModInfo>(json);

					modInfo.path = path;

					return modInfo;
				}
				catch(Exception e)
				{
					LogUtility.LogWarning("There was an issue while loading the ModInfo from " + path + " - " + e.Message);					
				}
			}

			return null;
		}		
	}		
}