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Fix currency command

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This commit is contained in:
Dragon Fire
2021-04-23 08:35:50 -04:00
parent a827805a13
commit a29adc2cb5
1 changed files with 24 additions and 21 deletions
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commands/edit-number/currency.js
+24 -21
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@@ -12,9 +12,10 @@ module.exports = class CurrencyCommand extends Command {
description: 'Converts currency from one currency to another.', description: 'Converts currency from one currency to another.',
credit: [ credit: [
{ {
name: 'Foreign exchange rates API', name: 'Fawaz Ahmed',
url: 'https://exchangeratesapi.io/', url: 'https://github.com/fawazahmed0',
reason: 'API' reason: 'API',
reasonURL: 'https://github.com/fawazahmed0/currency-api'
} }
], ],
args: [ args: [
@@ -28,45 +29,47 @@ module.exports = class CurrencyCommand extends Command {
prompt: 'What currency code (e.g. USD) do you want to use as the base?', prompt: 'What currency code (e.g. USD) do you want to use as the base?',
type: 'string', type: 'string',
min: 3, min: 3,
max: 3, max: 3
parse: base => base.toUpperCase()
}, },
{ {
key: 'target', key: 'target',
prompt: 'What currency code (e.g. USD) do you want to convert to?', prompt: 'What currency code (e.g. USD) do you want to convert to?',
type: 'string', type: 'string',
min: 3, min: 3,
max: 3, max: 3
parse: target => target.toUpperCase()
} }
] ]
}); });
this.rates = new Map(); this.currencies = null;
} }
async run(msg, { base, target, amount }) { async run(msg, { base, target, amount }) {
if (!this.currencies) await this.fetchCurrencies();
if (!this.currencies[base]) return msg.say('You provided an invalid base currency code.');
if (!this.currencies[target]) return msg.say('You provided an invalid target currency code.');
if (base === target) return msg.say(`Converting ${base} to ${target} is the same value, dummy.`); if (base === target) return msg.say(`Converting ${base} to ${target} is the same value, dummy.`);
try { try {
const rate = await this.fetchRate(base, target); const rate = await this.fetchRate(base, target);
return msg.say(`${formatNumber(amount)} ${base} is ${formatNumber(amount * rate)} ${target}.`); const baseName = this.currencies[base];
const targetName = this.currencies[target]
return msg.say(`${formatNumber(amount)} ${baseName} is ${formatNumber(amount * rate)} ${targetName}.`);
} catch (err) { } catch (err) {
if (err.status === 400) return msg.say('Invalid base/target.');
return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`); return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
} }
} }
async fetchRate(base, target) { async fetchCurrencies() {
const query = `${base}-${target}`;
if (this.rates.has(query)) return this.rates.get(query);
const { body } = await request const { body } = await request
.get('https://api.exchangeratesapi.io/latest') .get('https://cdn.jsdelivr.net/gh/fawazahmed0/currency-api@1/latest/currencies.json');
.query({ this.currencies = body;
base, setTimeout(() => { this.currencies = null; }, 1.8e+6);
symbols: target return this.currencies;
}); }
this.rates.set(query, body.rates[target]);
setTimeout(() => this.rates.delete(query), 1.8e+6); async fetchRate(base, target) {
return body.rates[target]; const { body } = await request
.get(`https://cdn.jsdelivr.net/gh/fawazahmed0/currency-api@1/latest/currencies/${base}/${target}.json`);
return body[target];
} }
}; };