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  1. Google
  2. Discord

Discord Bot

node js

講師：陳宏彰

js 語法複習

//數字
var number = 10;

//字串
var string = 'this is a string';

//布林值
var bool = true;

//陣列
var array = [12,54,212,654.'string', true];


//物件
var object = {
    camp: '2019summer',
    date: '7/24~7/30';
    join: true,
    people: 40,
    names: ['張三', '李四', '王虎', '小張']
};

//函數
function show(array){
    for(var i in array){
        console.log(i + ': ' + array[i]);
    }
}

show(array);

show(object);
//arrow function
function add1(a, b){
    return a+b;
}

const add2 = (a, b) => { return  a+b };

const add3 = (a, b) => a+b;

const print = msg => { console.log(msg) };

const print2 = msg => console.log

print('hello world');
//callback函數宣告
function calculation(a, b, callback){
    return callback(a,b);
}

//callback函數呼叫
console.log(calculation(1, 1.5, (a, b) => a+b ));
//2.5
console.log(calculation(1, 1.5, (a, b) => a-b ));
//0.5
console.log(calculation(1, 1.5, (a, b) => a*b ));
//1.5
console.log(calculation(1, 1.5, (a, b) => a/b ));
//0.6666666666666666
//new
var embed = new RichEmbed();
//  ^名字    ^           ^
//       new 運算子      |
//       RichEmbed 建構子(constructor)

Discord

discordapp.com

Discord

Discord是一種閉源免費實時通話軟體，主要用於遊戲玩家。

截止2018年八月，Discord已有超過一億五千萬註冊用戶，四千六百萬月活躍用戶

From Wikipedia

Bot

const Discord = require('discord.js');
const client = new Discord.Client();

client.on('ready', () => {
  console.log(`Logged in as ${client.user.tag}!`);
});

client.on('message', msg => {
  if (msg.content === 'ping') {
    msg.reply('Pong!');
  }
});

client.login('token');

discord.js on github

Node js

nodejs.org

nodejs 是一個 javascript 的運行環境，可以讓 js 程式碼在非瀏覽器環境運行（例如：桌面應用程式、伺服器），而 nodejs 官方提供了很多模組（http、 url、 fs）供使用者運用

安裝discord.js

  1. 打開命令視窗
  2. 建立專案
  3. npm init -y
  4. npm i discord.js -- save

Glitch

glitch.com

建立一個 bot

discordapp developer

simply.js

這是一個我開發的套件，可以簡化Discord bot開發的過程，目前還在開發階段，未來會新增更多功能

開新專案

https://glitch.com/edit/#!/simba-fs-2019winter-template

const simply = require('simply.js');
const token = process.env.BOT_TOKEN;

simply.set('prefix', 'e/');

simply.echo('ping', 'pong');

simply.login(token);

加入測試伺服器

打招呼 bot

var simply = require('simply.js');
var token = process.env.TOKEN;

//setting
simply.set('prefix', 'e/');

//echo
simply.echo('ping', 'pong');
simply.echo('hi', 'hello!');
simply.echo('good morning', 'have a nice day');
//......

//login
simply.login(token);

投票 bot

需要的命令

vote

end

需要的設定

prefix

var simply = require('simply.js');
var token = process.env.TOKEN;
var {RichEmbed} = require('discord.js');

//setting
simply.set('prefix', 'e/');

simply.cmd('vote', function(msg, arg){
//code here
});

simply.cmd('end', function(msg, arg){
//code here
});

simply.login(token);
simply.cmd('vote', function(msg, arg){
    
    var embed = new RichEmbed()  //建立嵌入訊息    
        .setColor('0xffff00')    //設定顏色          
        .setTitle('vote')        //設定標題
        .setDescription('some content') //設定內容
        .setFooter('vote');      //設定頁尾
    msg.channel.send(embed);
});
simply.cmd('vote', function(msg, arg){
    var embed = new RichEmbed()
        .setColor('0xffff00')
        .setTitle('vote')
        .setDescription(arg[1])  //arg是在命令後的命令
        .setFooter('created by ' + msg.author.tag); 
          //msg.author.tag是發訊息的人的名字
    msg.channel.send(embed);
});
simply.cmd('vote', function(msg, arg){
    //把訊息串起來
    var text = '';
    for(var i = 1; i < arg.length; i++){
        text += ' ' + arg[i]; 
    }
    var embed = RichEmbed()
        .setColor('0xffff00')
        .setTitle('vote')
        .setDescription(text)
        .setFooter('created by ' + msg.author.tag);
    msg.channel.send(embed);
});
var vote;
simply.cmd('vote', function(msg, arg){
    var text = '';
    for(var i = 1; i < arg.length; i++){
        text += ' ' + arg[i]; 
    }
    var embed = new RichEmbed()
        .setColor('0xffff00')
        .setTitle('vote')
        .setDescription(text)
        .setFooter('created by ' + msg.author.tag);
    vote = msg.channel.send(embed);
    //加入✅ ❎
    vote.then(function(Vmsg){
        Vmsg.react('\u2705');
        Vmsg.react('\u274E');
    });
});
simply.cmd('end', function(msg, arg){
    vote.then(function(msg){
        //建立結果
        var reactions = msg.reactions;
        var vote = reactions.first().message.embeds[0];
        var result = 'Result of \'' + vote.description + '\'';
        reactions.map(function(val, key){
            result +=  '\n' + key + ' : ' + (val.count-1);
        });
        //建立嵌入訊息
        var embed = new RichEmbed()
            .setColor('0x0000ff')
            .setTitle('Vote Result')
            .setDescription(result)
            .setFooter('Thank you for using this bot')
        msg.channel.send(embed);
    })
});

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