import { readFileSync } from "fs";
import { isSameDay, format, differenceInYears } from "date-fns/fp";
import config from "../config.js";

export default async function birthdayNotice() {
  // 読み込み
  const birthdays: { [key: string]: string | undefined } =
  JSON.parse(readFileSync("data/birthdays.json", "utf-8"));

  // 配列化
  const birthdaysIndex: string[] = Object.entries(birthdays)
  .map(([key, value]) => value)
  .filter(value => value !== undefined) as string[];

  // 初期値
  const resultInitial: string = `
  【今日誕生日の人】\n`;

  let result = resultInitial;

  for (let i = 0; i < Object.keys(birthdays).length; i++) {
    const birthday = format(birthdaysIndex[i], "yyyy/MM/dd")

    if (isSameDay(birthday, new Date())) {
      const age = differenceInYears(new Date(), birthday);

      const req = await fetch(`https://${config.uwuzu.host}/api/users/`, {
        method: "POST",
        body: JSON.stringify({
          token: config.uwuzu.apiToken,
          userid: Object.keys(birthdays)[i],
        }),
      });

      const res = await req.json();

      result+= `${res.username}さん(${age}歳)\n`
    }
  }

  if (result === resultInitial) {
    return;
  }

  const req = await fetch(`https://${config.uwuzu.host}/api/ueuse/create`, {
    method: "POST",
    body: JSON.stringify({
      token: config.uwuzu.apiToken,
      text: result,
    }),
  });

  const res = await req.json();

  console.log("誕生日お知らせ：", res);
}