// arrayは現在位置の駅ID(駅在宅の場合は1つの配列、駅間の場合は2つの配列)
// stopStationIDListは停車駅の駅IDの配列 [Y01,Y02,Y05,...]
export const findReversalPoints = (array, stopStationIDList) => {
  try {
    if (!stopStationIDList) return [];
    // arrayが二次元配列だったら早期リターン
    if (!array instanceof Array) return [];
    if (!array) return [];
    if (array[0] instanceof Array) return [];

    // 完全一致
    if (array.length == 1) {
      const index = stopStationIDList.map((d) => {
        let a = false;
        d.forEach((x) => {
          if (x == array[0]) a = true;
        });
        return a;
      });
      if (index != -1) return index;
    }
    // 駅間の場合
    if (array.length == 2) {
      const allThroughStation = stopStationIDList.map((d) => {
        if (
          (array[0] == "M12" && array[1] == "Y09") ||
          (array[0] == "Y09" && array[1] == "M12")
        )
          return d[0] == "M12" ? true : false;

        let returndata = false;
        d.forEach((x) => {
          if (array[0] < x && x < array[1]) {
            returndata = true;
          } else if (array[0] < x && x == array[1]) {
            returndata = true;
          } else if (array[1] == x && x < array[0]) {
            returndata = true;
          } else if (array[1] < x && x < array[0]) {
            returndata = true;
          }
        });

        return returndata;
      });
      return allThroughStation;
    }
  } catch (e) {
    console.log(e);
  }
};