xiao/commands/search/wikipedia.js

const commando = require('discord.js-commando');
const Discord = require('discord.js');
const request = require('superagent');

module.exports = class WikipediaCommand extends commando.Command {
    constructor(Client){
        super(Client, {
            name: 'wikipedia',
            group: 'search',
            memberName: 'wikipedia',
            description: 'Searches Wikipedia for something. (;wikipedia Cat)',
            examples: [';wikipedia Cat']
        });
    }

    async run(message) {
        if(message.channel.type !== 'dm') {
            if(!message.channel.permissionsFor(this.client.user).hasPermission(['SEND_MESSAGES', 'READ_MESSAGES', 'EMBED_LINKS'])) return;
        }
        console.log("[Command] " + message.content);
        let thingToSearch = message.content.split(" ").slice(1).join("%20");
        request
        .get("https://en.wikipedia.org/w/api.php?action=query&prop=extracts&format=json&titles=" + thingToSearch + "&exintro=&explaintext=&redirects=&formatversion=2")
        .then(function (response) {
            let description = response.body.query.pages[0].extract;
            let name = response.body.query.pages[0].title;
            thingToSearch = thingToSearch.split(")").join("%29");
            if(description === undefined) {
                message.channel.send(":x: Error! Entry Not Found!");
            } else {
                description = description.substr(0, 1900);
                description = description.split('\n').join("\n\n");
                const embed = new Discord.RichEmbed()
                .setColor(0xE7E7E7)
                .setTitle(name)
                .setURL("https://en.wikipedia.org/wiki/" + thingToSearch)
                .setAuthor("Wikipedia", "https://upload.wikimedia.org/wikipedia/en/thumb/8/80/Wikipedia-logo-v2.svg/1122px-Wikipedia-logo-v2.svg.png")
                .setDescription(description + " [Read the Rest Here](https://en.wikipedia.org/wiki/" + thingToSearch + ")");
                message.channel.sendEmbed(embed).catch(console.error);
            }
        }).catch(function (err) {
            message.channel.send(":x: Error! Entry Not Found!");
        });
    }
};