const { Collection, Client, MessageEmbed } = require('discord.js');
const MongoClient = require('mongodb').MongoClient;
const mongoose = require('mongoose');
const Logger = require("../util/Logger");
const path = require("path");
const fs = require('fs');

class QuarksBot extends Client {

  constructor(options, config) {
    super(options)

    this.config = config;
    this.commands = new Collection();
    this.logger = new Logger(path.join(__dirname, "..", "logs/Logs.log"));

    if (this.config.Token === "")
    return new TypeError(
      "The config.js is not filled out. Please make sure nothing is blank, otherwise the bot will not work properly."
    );

    this.db;
    this.dbo;
    this.connectMongo(this.config.mongoURI, this.config.dbo);
    this.LoadCommands();
    this.LoadEvents();

    this.Ready = false;

    this.ws.on("INTERACTION_CREATE", async (interaction) => {
      if (interaction.type!=3) {
        client.log("Interaction")
        let GuildDB = await this.GetGuild(interaction.guild_id);

        const command = interaction.data.name.toLowerCase();
        const args = interaction.data.options;

        //Easy to send respnose so ;)
        interaction.guild = await this.guilds.fetch(interaction.guild_id);
        interaction.send = async (message) => {
          return await this.api
            .interactions(interaction.id, interaction.token)
            .callback.post({
              data: {
                type: 4,
                data:
                  typeof message == "string"
                    ? { content: message }
                    : message.type && message.type === "rich"
                    ? { embeds: [message] }
                    : message,
              },
            });
        };
        let cmd = client.commands.get(command);
        if (cmd.SlashCommand && cmd.SlashCommand.run)
          cmd.SlashCommand.run(this, interaction, args, { GuildDB });
      }
    });

    const client = this;
  }

  async connectMongo(mongoURI, dbo) {
    // Connect to MongoDB database.
    this.db = await MongoClient.connect(mongoURI);
    this.dbo = this.db.db(dbo);
    
    mongoose.connect(`${mongoURI}/${dbo}`);
    this.log('Successfully connected to mongoDB');
  }

  exists(n) {return null != n && undefined != n && "" != n}

  padding(data) {return (`     ${data}` + " ".repeat((9-data.toString().length)))}

  LoadCommands() {
    let CommandsDir = path.join(__dirname, '..', 'commands');
    fs.readdir(CommandsDir, (err, files) => {
      if (err) this.log(err);
      else
        files.forEach((file) => {
          let cmd = require(CommandsDir + "/" + file);
          if (!cmd.name || !cmd.description)
            return this.log(
              "Unable to load Command: " +
                file.split(".")[0] +
                ", Reason: File doesn't had run/name/desciption"
            );
          this.commands.set(file.split(".")[0].toLowerCase(), cmd);
          this.log("Command Loaded: " + file.split(".")[0]);
        });
    });
  }

  LoadEvents() {
    let EventsDir = path.join(__dirname, '..', 'events');
    fs.readdir(EventsDir, (err, files) => {
      if (err) this.log(err);
      else
        files.forEach((file) => {
          const event = require(EventsDir + "/" + file);
          this.on(file.split(".")[0], event.bind(null, this));
          this.logger.log("Event Loaded: " + file.split(".")[0]);
        });
    });
  }

  sendTime(Channel, Error) {
    let embed = new MessageEmbed()
      .setColor(this.config.EmbedColor)
      .setDescription(Error);

    Channel.send(embed);
  }

  RegisterSlashCommands() {
    this.guilds.cache.forEach((guild) => {
      require("../util/RegisterSlashCommands")(this, guild.id);
    });
  }

  async GetGuild(GuildId) {
    let serverID = GuildId;
    let customChannelStatus, allowedChannels;
    let actionChannel, tweetChannel;
    let startingBalance, incomeRoles;
    let guild = await this.dbo.collection("guilds").findOne({"server.serverID":GuildId}).then(guild => guild);

      // If guild not found, generate guild default
      if (!guild) {
        let newGuild = {
          server: {
            serverID: GuildId,
            hasCustomChannels: false,
            allowedChannels: [],
            actionChannel: null,
            tweetChannel: null,
            startingBalance: 1000.00,
            incomeRoles: [],
          }
        }
        this.dbo.collection("guilds").insertOne(newGuild, function(err, res) {
          if (err) throw err;
        });
        customChannelStatus = newGuild.server.hasCustomChannels;
        allowedChannels = newGuild.server.allowedChannels;
        actionChannel = newGuild.server.actionChannel;
        tweetChannel = newGuild.server.tweetChannel;
        startingBalance = newGuild.server.startingBalance;
        incomeRoles = newGuild.server.incomeRoles;
      } else {
        customChannelStatus = guild.server.hasCustomChannels;
        allowedChannels = guild.server.allowedChannels;
        actionChannel = guild.server.actionChannel;
        tweetChannel = guild.server.tweetChannel;
        startingBalance = guild.server.startingBalance;
        incomeRoles = guild.server.incomeRoles;
      }
    let guildData = {
      serverID: serverID,
      customChannelStatus: customChannelStatus,
      allowedChannels: allowedChannels,
      actionChannel: actionChannel,
      tweetChannel: tweetChannel,
      startingBalance: startingBalance,
      incomeRoles: incomeRoles,
    }
    return guildData;
  }

  /*
   This command is to verify a user
   has the correct role to use a 
   command ie. has cop role to use
   name-search
  */
  async verifyUseCommand(serverID, rolesCache, isList) {
    let { customRoleStatus } = await this.GetGuild(serverID)
    if (customRoleStatus) {
      let hasRole = await this.checkRoleStatus(rolesCache, serverID, isList);
      if (hasRole) {
        return true // User has role, can use command
      } else return false // User does not have role, can't use command
    } else return true // There is no role limits
  }

  log(Text) {
    this.logger.log(Text);
  }

  sendError(Channel, Error) {
    let embed = new MessageEmbed()
      .setTitle("An error occured")
      .setColor("RED")
      .setDescription(Error)

    Channel.send(embed);
  }

  build() {
    this.login(this.config.Token);
  }
}

module.exports = QuarksBot;