using System.Linq;
using System.Threading.Tasks;
using DSACore.Auxiliary;

namespace DSACore.Commands
{
    public class Help
    {
        static Help()
        {
            /*TextReader stream = new StreamReader(@"..\..\Help.json"); // Load command-description file
            var reader = new JsonTextReader(stream); // create stream reader

            reader.Read(); // step into structure, until the array starts
            reader.Read();
            reader.Read();
            
            try
            {
                var test = new JsonSerializer().Deserialize<List<CommandInfo>>(reader); // Deserialize Data and create CommandInfo Struct
                
                Commands.AddRange(test); // Add new CommandInfos to List
            }
            catch (Exception e)
            {
                // ignored
            }*/
        }

        //public static List<CommandInfo> Commands { get; } = new List<CommandInfo>();


        public static string Get_Specific_Help(string command)
        {
            // return command specific help
            var com = DSACore.DSA_Game.Save.Properties.CommandInfos.OrderBy(x => SpellCorrect.CompareEasy(x.Name, command.ToLower())).First(); // get best fit command
            return com.GetDescription();
        }

        public static string Get_Generic_Help()
        {
            string res = "";
            foreach (var com in DSACore.DSA_Game.Save.Properties.CommandInfos)
            {
                int first_column_width = 8;
                res += ("!" + com.Name + ": ").AddSpaces(first_column_width) + com.Brief;

                if (com.Description.Length > 1)
                {
                    res += "\n" + "".AddSpaces(first_column_width) + "(\"!man " + com.Name + "\" gibt genauere Informationen)";
                }

                res += "\n\n";
            }
            return res;
        }
        
        public static string ShowHelp(params string[] commandList)
        {
            var command = "";
            if (commandList.Length > 0) {
                command = commandList.Aggregate((s, c) => s + " " + c);
            }

            if (command.Equals(string.Empty)) // return generic Help
            {
                string res = Get_Generic_Help();
                
                return res;
            }

            
            return Get_Specific_Help(command);
        }
    }
}