using static System.Runtime.InteropServices.JavaScript.JSType;

namespace Qrakhen.Qamp.Core.IO;

public static class Console
{
   public static OutputStreamMessageHandler StdOut;
   public static ErrorStreamMessageHandler StdErr;
   public static InputStreamListenHandler StdIn;
   public static MessageFormatter Formatter;

   static Console()
   {
      StdOut = System.Console.Out.WriteLine;
      StdErr = System.Console.Error.WriteLine;
      StdIn = System.Console.In.ReadLine;
      Formatter = (p) => {
         if (p.Length == 0)
            return [];
         return p.Select(x => x.ToString()).ToArray() ?? [];
      };
   }

   public static void Write(params object[] parameters)
   {
      if (StdOut == null)
         return;

      var lines = Formatter(parameters);
      foreach (var line in lines)
         StdOut(line);
   }

   public static string? Read()
   {
      if (StdIn == null)
         throw new InvalidOperationException($"No stdin provided, can not read input stream.");

      return StdIn();
   }

   public static void Error(params object[] parameters)
   {
      if (StdErr == null)
         Write(parameters);

      var lines = Formatter(parameters);
      foreach (var line in lines)
         StdErr(line);
   }
}

public delegate string? InputStreamListenHandler();
public delegate void OutputStreamMessageHandler(string? message);
public delegate void ErrorStreamMessageHandler(string? message);

public delegate string?[] MessageFormatter(params object[] parameters);