add_two.gs

else if (userMessage == "+2" | userMessage == "加二") {

    if (current_hour >= 0 & current_hour <= 19) {
      if (current_list_row < maxium_member) {
        reserve_list.getRange(current_list_row + 1, 1).setValue(reserve_name);
        reserve_list.getRange(current_list_row + 2, 1).setValue(reserve_name);
        current_list_row = reserve_list.getLastRow();

        reply_message = [{
          "type": "text",
          "text": reserve_name + "成功預約兩位 🙆" + "還有" + (maxium_member - current_list_row) + "位名額"
        }]

      }

      else if (current_list_row >= maxium_member & current_list_row < maxium_member+2) { // 候補名額只剩一位時不給候補
        reserve_name = "候補：" + reserve_name;
        reserve_list.getRange(current_list_row + 1, 1).setValue(reserve_name);
        reserve_list.getRange(current_list_row + 2, 1).setValue(reserve_name);

        reply_message = [{
          "type": "text",
          "text": reserve_name + "預約兩位候補"
        }]

      }

      else {
        reply_message = [{
          "type": "text",
          "text": "⚠️ 報名額滿！已達 40 人"
        }]
      }
    }
    else {
      reply_message = [{
        "type": "text",
        "text": "現在不是報名時間喔 ～ ，請在 00:00 - 19:00 預約"
      }]
    }

  }