US Election Command

commands/events/us-election.js

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+const Command = require('../../structures/Command');
+const request = require('node-superfetch');
+const { stripIndents } = require('common-tags');
+const year = 2020;
+
+module.exports = class UsElectionCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'us-election',
+			aliases: ['election', 'usa-election', 'presidential-election', 'president-election', `${year}-election`],
+			group: 'events',
+			memberName: 'us-election',
+			description: 'Responds with the odds of each canidate winning the presidential election, according to 538.',
+			credit: [
+				{
+					name: 'FiveThirtyEight',
+					url: 'https://fivethirtyeight.com/',
+					reason: 'API',
+					reasonURL: 'https://projects.fivethirtyeight.com/2020-election-forecast/'
+				}
+			]
+		});
+	}
+
+	async run(msg) {
+		const currentYear = new Date().getFullYear();
+		if (year !== currentYear) {
+			return msg.reply(`This command has not been updated to reflect the ${currentYear} election season.`);
+		}
+		try {
+			const { winners, simulations } = await this.getList();
+			const chances = Object.entries(winners)
+				.map(([canidate, chances]) => `**${canidate}:** ${chances} in ${simulations}`);
+			return msg.say(stripIndents`
+				**Chances of Winning the 2020 US Presidential Election (Accoring to FiveThirtyEight):**
+				${chances.join('\n')}
+
+				_More detailed information is available at <https://projects.fivethirtyeight.com/2020-election-forecast/>._
+			`);
+		} catch (err) {
+			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
+		}
+	}
+
+	async getList() {
+		const { body } = await request
+			.get('https://projects.fivethirtyeight.com/2020-election-forecast/us_simulations.json');
+		const winners = {};
+		for (const simulation of body[0].simulations) {
+			const existing = winners[simulation.winner];
+			if (!existing) {
+				winners[simulation.winner] = 1;
+				continue;
+			}
+			winners[simulation.winner] += 1;
+		}
+		return { winners, simulations: body[0].simulations.length };
+	}
+};