package funkin.ui.debug.charting.commands;

import funkin.data.song.SongData.SongNoteData;
import funkin.data.song.SongData.SongEventData;
import funkin.data.song.SongDataUtils;

/**
 * Deletes the given notes and events from the current chart in the chart editor.
 * Use only when BOTH notes and events are being deleted.
 */
@:nullSafety
@:access(funkin.ui.debug.charting.ChartEditorState)
class RemoveItemsCommand implements ChartEditorCommand
{
  var notes:Array<SongNoteData>;
  var events:Array<SongEventData>;

  public function new(notes:Array<SongNoteData>, events:Array<SongEventData>)
  {
    this.notes = notes;
    this.events = events;
  }

  public function execute(state:ChartEditorState):Void
  {
    if ((notes.length + events.length) == 0) return;

    state.currentSongChartNoteData = SongDataUtils.subtractNotes(state.currentSongChartNoteData, notes);
    state.currentSongChartEventData = SongDataUtils.subtractEvents(state.currentSongChartEventData, events);

    state.currentNoteSelection = [];
    state.currentEventSelection = [];

    state.playSound(Paths.sound('chartingSounds/noteErase'));

    state.saveDataDirty = true;
    state.noteDisplayDirty = true;
    state.notePreviewDirty = true;

    state.sortChartData();
  }

  public function undo(state:ChartEditorState):Void
  {
    if ((notes.length + events.length) == 0) return;

    for (note in notes)
    {
      state.currentSongChartNoteData.push(note);
    }

    for (event in events)
    {
      state.currentSongChartEventData.push(event);
    }

    state.currentNoteSelection = notes;
    state.currentEventSelection = events;

    state.playSound(Paths.sound('chartingSounds/undo'));

    state.saveDataDirty = true;
    state.noteDisplayDirty = true;
    state.notePreviewDirty = true;

    state.sortChartData();
  }

  public function shouldAddToHistory(state:ChartEditorState):Bool
  {
    // This command is undoable. Add to the history if we actually performed an action.
    return (notes.length > 0 || events.length > 0);
  }

  public function toString():String
  {
    return 'Remove ${notes.length + events.length} Items';
  }
}