using System;
using System.Collections.Generic;
using System.Text;

namespace SalsaModel.Tests {
  class ManualTiming : ITiming {
    double _beat;
    /// <summary>
    /// Constructs a timing object representing the beat, supplied as a float in [0.0, 8).
    /// </summary>
    /// <param name="beat"></param>
    public ManualTiming(double beat) { 
      _beat = beat;
    }

    public int Beat() {
      return (((int)_beat) % 8) + 1;
    }

    public int GlobalBeat() {
      return (int)_beat + 1;
    }

    public double Percent() {
      return _beat - (int)_beat;
    }

      const bool c_onOne = true;
      // XXX this probably means that StepNumber shouldn't be part of timing?
      public int StepNumber()
      {
          int beat = Beat();

          if (c_onOne)
          {
              switch (beat)
              {
                  case 1:
                  case 2:
                  case 3:
                      return beat - 1;
                  case 5:
                  case 6:
                  case 7:
                      return beat - 2;
                  case 4:
                  case 8:
                      return -1;
                  default:
                      throw new InvalidOperationException("bad beat");
              }
          }
          else
          {
              switch (beat)
              {
                  // case 5: return 0;
                  case 6: return 0;
                  case 7: return 1;
                  case 1: return 2;
                  case 2: return 3;
                  case 3: return 4;
                  case 5: return 5;

                  case 8:
                  case 4:
                      return -1;

                  default: throw new InvalidOperationException("bad beat");
              }

          }
      }



  }
}