import * as fs from "fs";
import config from "../../config.js";
import type { ueuse } from "types/types.js";

const initialFile: Array<string> = [];

// コマンド読み込み
import Follow from "./follow.js";
import UnFollow from "./unfollow.js";
import Weather from "./weather.js";

// 初期化
if (!fs.existsSync("logs/alreadyCommands.json")) {
  fs.writeFileSync(
    "logs/alreadyCommands.json",
    JSON.stringify(initialFile),
    "utf-8",
  );
}

// 対応済みユーズ一覧
const alreadyCommands: Array<string> = JSON.parse(fs.readFileSync("logs/alreadyCommands.json", "utf-8"));

function cutAfterChar(str: string, char: string) {
  const index = str.indexOf(char);

  if (index === -1) {
    return "";
  }

  return str.substring(index + 1);
}

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

  const res = await req.json();

  return res;
}

function alreadyAdd(data: string) {
  alreadyCommands[alreadyCommands.length] = data;

  fs.writeFileSync(
    "logs/alreadyCommands.json",
    JSON.stringify(alreadyCommands),
    "utf-8",
  );
}

export default async function Commands() {
  const mentionsReq = await fetch(
    `https://${config.uwuzu.host}/api/ueuse/mentions`, {
      method: "POST",
      body: JSON.stringify({
        token: config.uwuzu.apiToken,
      }),
    }
  );

  const mentions: Array<ueuse> = await mentionsReq.json();

  console.log("----------------");
  console.log("コマンド処理");

  for (let i = 0; i < mentions.length; i++) {
    const data = mentions[i];

    // 除外ユーズ
    if (alreadyCommands.indexOf(data.uniqid) !== -1) {
      break;
    }

    if (data.text.charAt(0) === "!") {
      break;
    }

    // コマンド処理
    console.log("--------");

    const commandName = cutAfterChar(data.text, "/");

    switch (commandName) {
      case "follow":
        alreadyAdd(data.uniqid);
        Follow(data);
        break;
      case "unfollow":
        alreadyAdd(data.uniqid);
        UnFollow(data);
        break;
      case "weather":
        alreadyAdd(data.uniqid);
        Weather(data);
        break;
      default:
        alreadyAdd(data.uniqid);

        const reply = await Reply(`
        不明なコマンドです。
        コマンド実行を除外する場合は1文字目に\`!\`を入れてください。
        `, data.uniqid);

        console.log("未対応コマンド: ", reply);
        break;
    }
  }
}