import { TheoryINote } from "../interface/TheoryINote";
export class TheoryFirstLastNote {
  // 添加音符, isGeometryFistNote
  // WQQ 添加音符, isMeasureEfficientStart 是否是该收 staff(以后都会换成手) 的第一个音
  public static addFirstLastNote(noteList_: TheoryINote[]) {
    let measureRecorder = -1;
    let rMeasureRecorder = -1;
    let staffVoiceRecorder = -1;
    let rStaffVoiceRecorder = -1;
    let firstNoteForChordFlag = false;
    let lastNoteForChordFlag = false;

    // 用来记录当前的 默认值
    let lastNoteDefaultX: number | null;
    for (let i = 0; i < noteList_.length; i++) {
      // 存储first note
      // 正向的音
      let temp = noteList_[i];
      // 反向的音
      let reverseTemp = noteList_[noteList_.length - 1 - i];
      let reverseTempVoice = reverseTemp.voice;
      // 排除grace note的这个音
      if (!temp.isGrace) {
        if (measureRecorder !== temp.measureIndex || staffVoiceRecorder !== temp.voice) {
          // 如果是小节第一个音, 存储物理意义上的第一个音符
          temp.isGeometryFirstNoteOfMeasure = true;
          firstNoteForChordFlag = true;
          measureRecorder = temp.measureIndex;
          staffVoiceRecorder = temp.voice;
        } else if (temp.isChord && firstNoteForChordFlag) {
          // 又或者, 同一个音符杆上的,多个音符
          temp.isGeometryFirstNoteOfMeasure = true;
        } else {
          temp.isGeometryFirstNoteOfMeasure = false;
          firstNoteForChordFlag = false;
        }
      }

      if (!reverseTemp.isGrace) {
        if (rMeasureRecorder !== reverseTemp.measureIndex || rStaffVoiceRecorder !== reverseTempVoice) {
          // 如果是小节末尾音
          reverseTemp.isGeometryLastNoteOfMeasure = true;
          if (reverseTemp.isChord) {
            lastNoteForChordFlag = true;
          }
          lastNoteDefaultX = reverseTemp.defaultX;
          rMeasureRecorder = reverseTemp.measureIndex;
          rStaffVoiceRecorder = reverseTempVoice;
        } else if (lastNoteForChordFlag) {
          reverseTemp.isGeometryLastNoteOfMeasure = true;
          if (
            Math.abs(reverseTemp.defaultX! - lastNoteDefaultX!) <= 13 &&
            !reverseTemp.isRest &&
            !reverseTemp.isChord
          ) {
            lastNoteForChordFlag = false;
            lastNoteDefaultX = (lastNoteDefaultX! + reverseTemp.defaultX!) / 2;
          }
        } else {
          reverseTemp.isGeometryLastNoteOfMeasure = false;
          lastNoteForChordFlag = false;
        }
      }
    }
  }
}