const ms = require("ms");
const fs = require("fs");
const path = require("path");
const uuid = require("uuid").v4;

const dbFileName = path.resolve(".", "utils", "todo.json");
let database = [];

module.exports = {
  name: "todo",
  aliases: ["todo"],
  utilisation: "{prefix}todo <time> <salon> <message>",

  async onStart(client) {
    updateDatabase();
    const currentTime = Date.now();
    database.forEach((reminder) => {
      const delay = reminder.time - currentTime;
      if (delay < 0) {
        setTimeout(() => {
          const discordChannel = client.channels.resolve(reminder.channel);
          discordChannel.send(
            `La SNCF vous présente ses excuses pour le retard <@${reminder.author}> ! tu m'as demandé de te rappeler\n\`\`\`${reminder.message}\`\`\` `
          );
          updateDatabase();
          database = database.filter((struct) => struct.uuid !== reminder.uuid);
          saveDatabase();
        }, 1000);
      } else {
        setTimeout(() => {
          const discordChannel = client.channels.resolve(reminder.channel);
          discordChannel.send(
            `<@${reminder.author}>, tu m'as demandé de te rappeler\n\`\`\`${reminder.message}\`\`\` `
          );
          updateDatabase();
          database = database.filter((struct) => struct.uuid !== reminder.uuid);
          saveDatabase();
        }, delay);
      }
    });
    console.log("-> ON START !!!!! ça marche putain!");
  },
  async execute(client, message, args) {
    let reveilTime = ms(args[0]);
    const defaut = message.channel.id;
    const channel = args[1].replace(/[^0-9]/g, "");
    let salon = parseInt(channel) ? channel : defaut;
    const reason = args.splice(salon == defaut ? 1 : 2).join(" ");
    const reminderStruct = {
      uuid: uuid(),
      author: message.author.id,
      time: Date.now() + reveilTime,
      channel: salon,
      guild: message.guild.id,
      message: reason,
    };

    setTimeout(function () {
      const discordChannel = message.guild.channels.cache.get(salon);
      discordChannel.send(
        `<@${reminderStruct.author}>, tu m'as demandé de te rappeler\n\`\`\`${reminderStruct.message}\`\`\` `
      );
      updateDatabase();
      database = database.filter(
        (struct) => struct.uuid !== reminderStruct.uuid
      );
      saveDatabase();
    }, reveilTime);

    //check if file todo.json content is empty
    updateDatabase();
    database.push(reminderStruct);
    saveDatabase();

    message.react("🤌");
    message.react("👌");
  },
};

const updateDatabase = () => {
  if (fs.existsSync(dbFileName)) {
    const fileContent = fs.readFileSync(dbFileName);
    database.push(...JSON.parse(fileContent));
  }
};
const saveDatabase = () => {
  const foundUUIDs = [];
  database = database.filter((struct) => {
    if (!foundUUIDs.includes(struct.uuid)) {
      foundUUIDs.push(struct.uuid);
      return true;
    }
    return false;
  });
  fs.writeFileSync(dbFileName, JSON.stringify(database, null, 2));
};