Zodで開始日時が終了日時よりも後になっている場合にバリデーションを出す

  const scheduleSchema = z
    .object({
      title: z
        .string()
        .min(1, { message: "Title must be at least 1 characters." }),
      all_day: z.boolean().default(false).optional(),
      start_date: z.date({
        required_error: "A date of start schedule is required.",
      }),
      start_time: z
        .string()
        .min(4, { message: "A time of start schedule is required" }),
      end_date: z.date({
        required_error: "A date of end schedule is required.",
      }),
      end_time: z
        .string()
        .min(4, { message: "A time of end schedule is required" }),
    })
    .refine(
      // 開始日時が終了日時よりも後になっている場合または、一緒の場合エラーを出す
      (data) => {
        const { start_date, end_date, start_time, end_time } = data;
        const [s_hours, s_minutes] = start_time.split(":").map(Number);
        const [e_hours, e_minutes] = end_time.split(":").map(Number);
        start_date.setHours(s_hours);
        end_date.setHours(e_hours);
        start_date.setMinutes(s_minutes);
        end_date.setMinutes(e_minutes);
        return start_date < end_date;
      },
      {
        message: "開始日、または終了日を確認してください",
        path: ["end_date"],
      }
    );