using System;
using System.IO;

namespace TrueCraft.Core
{
    public static class Paths
    {
        public static string Base
        {
            get
            {
                var xdg_config_home = Environment.GetEnvironmentVariable("XDG_CONFIG_HOME");
                string config = null;
                if (xdg_config_home != null)
                {
                    config = Path.Combine(xdg_config_home, "truecraft");
                    if (Directory.Exists(config))
                        return config;
                }
                var appdata = Path.Combine(
                    Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
                    "truecraft");
                if (Directory.Exists(appdata))
                    return appdata;
                var userprofile = Path.Combine(
                    Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
                    ".truecraft");
                if (Directory.Exists(userprofile))
                    return userprofile;
                // At this point, there's no existing data to choose from, so use the best option
                if (config != null)
                {
                    Directory.CreateDirectory(config);
                    return config;
                }
                Directory.CreateDirectory(appdata);
                return appdata;
            }
        }

        public static string Worlds
        {
            get
            {
                return Path.Combine(Base, "worlds");
            }
        }

        public static string Settings
        {
            get
            {
                return Path.Combine(Base, "settings.json");
            }
        }

        public static string Screenshots
        {
            get
            {
                return Path.Combine(Base, "screenshots");
            }
        }

        public static string TexturePacks
        {
            get
            {
                return Path.Combine(Base, "texturepacks");
            }
        }
    }
}