main.ts

import { faker } from "npm:@faker-js/faker";
import * as log from "https://deno.land/std@0.167.0/log/mod.ts";
import dayjs from "npm:dayjs";
import Denomander from "https://deno.land/x/denomander@0.9.3/mod.ts";

// deno-lint-ignore no-explicit-any
function validateDate(value: any): string {
  if (dayjs(String(value), "YYYYMMDD").format("YYYYMMDD") !== String(value)) {
    throw `${program.errors.INVALID_RULE}: ${value}`;
  }
  return String(value);
}

// deno-lint-ignore no-explicit-any
function validateNumber(value: any): number {
  if (Number.isNaN(parseInt(value, 10))) {
    throw `${program.errors.INVALID_RULE}: ${value}`;
  }
  return parseInt(value, 10);
}

const program = new Denomander({
  app_name: "kusa",
  app_description: "jinko shiba generator",
  app_version: "2.0.0",
});

// コマンド定義
program
  .command("generate")
  .requiredOption(
    "--from",
    "(required) This flag specifies the start date. [YYYYMMDD]",
    validateDate,
  )
  .requiredOption(
    "--to",
    "(required) This flag specifies the end date. [YYYYMMDD]",
    validateDate,
  )
  .option(
    "--weekday",
    "This argument is the percentage to run during the daytime on weekdays. [number]",
    validateNumber,
  )
  .option(
    "--holiday",
    "This argument is the percentage to run on holidays and at night. [number]",
    validateNumber,
  )
  .parse(Deno.args);

// 変数の定義
const { from, to, weekday: wd = 5, holiday: hd = 50 } = program;

// 開始の日時をセット
let date = dayjs(`${from}`, "YYYYMMDD");

// 終了の日時をセット
const end = dayjs(`${to}`, "YYYYMMDD");

// dateとendのdiffを取る
const diff = () => {
  return date.diff(end) < 0;
};

// dateがendの日時を過ぎるまで続ける
while (diff()) {
  // // 月-金判定
  // const isWeekday = +date.format("d") > 0 && +date.format("d") < 6;

  // 21-3時判定
  const isWorkTime = +date.format("h") >= 21 && +date.format("h") <= 3;

  // 1/n判定
  const n = isWorkTime ? wd : hd;

  // 月-金で21-4時の間で1/5の確率でgit commitを行う
  // 土日もしくは日中帯の間で1/50の確率でgit commitを行う
  const canCommit = Math.floor(Math.random() * n) === 0;

  if (canCommit) {
    await commit();
  }

  // 時間を進める
  date = date.add(15, "minute");
}

// commitする
async function commit() {
  Deno.env.set("GIT_AUTHOR_DATE", date.format());
  Deno.env.set("GIT_COMMITTER_DATE", date.format());

  // フェイクユーザーリストを作成
  if (faker.datatype.boolean()) {
    const fakePersonList = [...Array(faker.number.int(20))].map(() => {
      return {
        userId: faker.string.uuid(),
        fullName: faker.person.fullName(),
        bio: faker.person.bio(),
        gender: faker.person.gender(),
        birthdate: faker.date.birthdate(),
        registeredAt: faker.date.past(),
      };
    });
    await Deno.writeTextFile(
      ".fake/personList.json",
      JSON.stringify(fakePersonList, null, 2),
    );
  }
  // フェイク会社リストを作成
  if (faker.datatype.boolean()) {
    const fakeCompanyList = [...Array(faker.number.int(20))].map(() => {
      return {
        companyId: faker.string.uuid(),
        companyName: faker.company.name(),
        catchPhrase: faker.company.catchPhrase(),
        buzzPhrase: faker.company.buzzPhrase(),
        established: faker.date.birthdate({ min: 0, max: 100, mode: "age" }),
        registeredAt: faker.date.past(),
      };
    });
    await Deno.writeTextFile(
      ".fake/companyList.json",
      JSON.stringify(fakeCompanyList, null, 2),
    );
  }

  // フェイク商品リストを作成
  if (faker.datatype.boolean()) {
    const fakeProductList = [...Array(faker.number.int(20))].map(() => {
      return {
        productId: faker.string.uuid(),
        productName: faker.commerce.productName(),
        price: faker.commerce.price(),
        productDescription: faker.commerce.productDescription(),
        registeredAt: faker.date.past(),
      };
    });
    await Deno.writeTextFile(
      ".fake/productList.json",
      JSON.stringify(fakeProductList, null, 2),
    );
  }

  const c = new Deno.Command("git", {
    args: [
      "commit",
      "--allow-empty",
      "-am",
      faker.lorem.sentence({ max: 5, min: 3 }),
    ],
  });

  const { stdout, stderr } = await c.outputSync();

  log.info(new TextDecoder().decode(stdout || stderr));
}