using Qrakhen.Qamp.Core.Execution;
using Qrakhen.Qamp.Editor.Commands;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Windows.Input;

namespace Qrakhen.Qamp.Editor.ViewModel;

public class MainViewModel : ObservableObject
{
   public EditorFrameViewModel EditorFrame { get; set; }

   private string _runnerOutput = "";
   public string RunnerOutput
   {
      get => _runnerOutput;
      set => SetProperty(ref _runnerOutput, value); 
   }

   public ICommand RunCommand { get; set; }
   public ICommand SaveCommand { get; set; }
   public ICommand LoadCommand { get; set; }

   public MainViewModel()
   {
      EditorFrame = new EditorFrameViewModel();

      RunCommand = new RelayCommand(ExecuteRun, CanRun);
      SaveCommand = null;
      LoadCommand = null;
   }

   private void ExecuteRun()
   {
      try {
         string code = EditorFrame.Serialize();
         Runner runner = new Runner(new Options((m) => { RunnerOutput += m; }));
         MemoryStream stream = new MemoryStream();
         stream.Write(EditorFrame.Encoding.GetBytes(code));
         runner.Run(stream);
         OnPropertyChanged(nameof(RunnerOutput));
      } catch (Exception ex) {
         RunnerOutput += $"\nERR: {ex.Message}\n";
      }
   }

   private bool CanRun()
   {
      return true;
   }
}