const ms = require("ms");
const uuid = require("uuid").v4;
const mongoose = require("mongoose");

const todoSchema = new mongoose.Schema({
  uuid: String,
  author: String,
  time: String,
  channel: String,
  guild: String,
  message: String,
});
const Todo = mongoose.model("Todo", todoSchema);

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

  async onStart(client) {
    const remainingTodos = await TodoUtils.loadAll();
    const currentTime = Date.now();
    remainingTodos.forEach(async 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 <@${reminder.author}> ! tu m'as demandé de te rappeler\n---------------------\n${reminder.message}`
          );
          await TodoUtils.deleteOne(reminder.uuid);
        }, 1000);
      } else {
        setTimeout(() => {
          const discordChannel = client.channels.resolve(reminder.channel);
          discordChannel.send(
            `<@${reminder.author}>, tu m'as demandé de te rappeler\n---------------------\n${reminder.message}`
          );
          await TodoUtils.deleteOne(reminder.uuid);
        }, delay);
      }
    });
  },
  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 reminder = new Todo({
      uuid: uuid(),
      author: message.author.id,
      time: Date.now() + reveilTime,
      channel: salon,
      guild: message.guild.id,
      message: reason,
    });
    await reminder.save();

    setTimeout(function () {
      const discordChannel = client.channels.resolve(salon);
      discordChannel.send(
        `<@${message.author.id}>, tu m'as demandé de te rappeler\n---------------------\n${reason}`
      );
      await TodoUtils.deleteOne(reminder.uuid);
    }, reveilTime);
    message.delete().catch(() => message.react("🤌"));
  },
};

const TodoUtils = {
  loadAll: async () => {
    return await Todo.find();
  },
  findOne: async (uuid) => {
    return await Todo.find({uuid});
  },
  deleteOne: async (uuid) => {
    return await Todo.deleteOne({uuid});
  },
};