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currency

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currency - npm Package Compare versions

Comparing version

3.0.0
to
4.0.0

51

cli.js
#!/usr/bin/env node
'use strict';
var pkg = require('./package.json');
var currency = require('./');
var argv = process.argv.slice(2);
const currency = require('./')
const argv = process.argv.slice(2)
const updateNotifier = require('update-notifier');
updateNotifier({pkg}).notify();
const updateNotifier = require('update-notifier')
const pkg = require('./package.json')
updateNotifier({pkg}).notify()
function help() {
console.log([
'',
' ' + pkg.description,
' ' + pkg.description,
'',
' Example',
' currency 10 usd dkk',
' $ currency 10 usd dkk',
' => 10 USD = 62.208 DKK',
'',
' => 57.75516'
].join('\n'));
' See readme.md for detailed usage.'
].join('\n'))
}
if (argv.indexOf('--help') !== -1) {
help();
return;
help()
return
}
if (argv.indexOf('--version') !== -1) {
console.log(pkg.version);
return;
console.log(pkg.version)
return
}
var opts = {
amount: argv[0],
from: argv[1],
to: argv[2]
};
let opts = {
amount: argv[0] || 1,
from: (argv[1] || 'USD').toUpperCase(),
to: (argv[2] || 'BTC').toUpperCase()
}
currency(opts).then(console.log).catch(err => {
console.log(err);
currency(opts)
.then(result => {
console.log(`${opts.amount} ${opts.from} = ${result} ${opts.to}`)
})
.catch(err => {
console.log(err)
process.exit(1);
});
process.exit(1)
})

104

index.js

@@ -1,32 +0,94 @@

'use strict';
const got = require('got')
const money = require('money')
const got = require('got');
const money = require('money');
const FIXER_URL = 'https://api.fixer.io/latest'
const BLOCKCHAIN_URL = 'https://blockchain.info/ticker'
const ETHERCHAIN_URL = 'https://etherchain.org/api/statistics/price'
const path = 'https://api.fixer.io/latest';
const CURRENCY_BITCOIN = 'BTC'
const CURRENCY_ETHEREUM = 'ETH'
let isAnyBTC = (from, to) => [from, to].includes(CURRENCY_BITCOIN)
let isAnyETH = (from, to) => [from, to].includes(CURRENCY_ETHEREUM)
const httpOpts = {
json: true
}
module.exports = (opts) => {
if (opts.amount === void 0) {
opts.amount = 1;
}
let {
amount = 1,
from = 'USD',
to = CURRENCY_BITCOIN
} = opts
if (opts.from === void 0) {
opts.from = 'usd';
let base = from
let promises = []
const anyBTC = isAnyBTC(from, to)
const anyETH = isAnyETH(from, to)
if (anyBTC) {
base = (from === CURRENCY_BITCOIN) ? to : from
promises.push(got(BLOCKCHAIN_URL, httpOpts))
}
if (opts.to === void 0) {
opts.to = 'dkk';
if (anyETH) {
// always default base to USD when dealing with Etherum
base = 'USD'
promises.push(got(ETHERCHAIN_URL, httpOpts))
}
return got(path, {json:true}).then(response => {
money.base = response.body.base;
money.rates = response.body.rates;
promises.unshift(got(`${FIXER_URL}?base=${base}`, httpOpts))
const converted = money.convert(opts.amount, {
from: opts.from.toUpperCase(),
to: opts.to.toUpperCase()
});
return Promise.all(promises).then(result => {
let [fixer] = result
return Number(converted.toFixed(3));
});
};
money.base = fixer.body.base
money.rates = fixer.body.rates
let conversionOpts = {
from,
to
}
if (anyBTC) {
let blockchain = result.find(r => r.body.hasOwnProperty(base))
Object.assign(money.rates, {
BTC: blockchain.body[base].last
})
}
if (anyETH) {
let etherchain = result.find(r => r.body.hasOwnProperty('data') && r.body.status === 1)
let {usd} = etherchain.body.data[etherchain.body.data.length - 1]
let ethTo = to === CURRENCY_ETHEREUM ? from : to
let etherumConversionOpts = {
from: 'USD', // always convert from USD
to: ethTo
}
let eth = money.convert(usd, etherumConversionOpts)
// set proper base
money.base = ethTo
Object.assign(money.rates, {
ETH: eth
})
}
if (anyBTC || anyETH) {
// swap the conversion opts
Object.assign(conversionOpts, {
from: to,
to: from
})
}
return money.convert(amount, conversionOpts)
})
}

16

package.json
{
"name": "currency",
"version": "3.0.0",
"description": "simple currency conversion cli using openexchangerates.org",
"version": "4.0.0",
"description": "simple currency conversion cli",
"main": "index.js",

@@ -10,3 +10,5 @@ "keywords": [

"rates",
"convert"
"convert",
"bitcoin",
"etherum"
],

@@ -21,5 +23,5 @@ "license": "MIT",

"dependencies": {
"got": "6.1.1",
"got": "7.1.0",
"money": "0.2.0",
"update-notifier": "0.6.0"
"update-notifier": "2.2.0"
},

@@ -40,5 +42,5 @@ "author": {

"devDependencies": {
"ava": "0.12.0",
"nock": "7.2.2"
"ava": "0.22.0",
"nock": "9.0.19"
}
}

27

readme.md
# currency [![Build Status](http://img.shields.io/travis/srn/currency.svg?style=flat-square)](https://travis-ci.org/srn/currency)
> simple currency conversion cli using [fixer.io](http://fixer.io/)
> simple currency conversion cli using [fixer.io](http://fixer.io), [blockchain.info](https://blockchain.info) and [etherchain.org](https://etherchain.org)

@@ -11,2 +11,8 @@ ## Install

## Currencies
- All currencies listed in the [European Central Bank](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html) API
- Bitcoin using [blockchain.info](https://blockchain.info)
- Ethereum using [etherchain.org](https://etherchain.org)
## CLI

@@ -20,9 +26,24 @@

Example
currency 10 usd dkk
$ currency 10 usd dkk
=> 10 USD = 62.208 DKK
=> 57.75516
$ currency 1 btc usd
=> 1 BTC = 3746.18 USD
$ currency 500 usd btc
=> 500 USD = 0.13358982579886716 BTC
$ currency 1 eth usd
=> 1 ETH = 282.81 USD
$ currency 500 usd eth
=> 500 USD = 1.767971429581698 ETH
```
## API
## License
MIT © [Søren Brokær](http://srn.io)

137

test.js

@@ -1,30 +0,123 @@

import test from 'ava';
import nock from 'nock';
import test from 'ava'
import nock from 'nock'
import currency from './';
import currency from './'
test.beforeEach(t => {
const exchangeRates = {
base: 'USD',
rates: {
DKK: 5.775516,
MYR: 3.230421
}
};
nock('https://api.fixer.io')
.get('/latest?base=USD')
.reply(200, {
base: 'USD',
rates: {
DKK: 6.2208
}
})
nock('https://api.fixer.io')
.get('/latest')
.reply(200, exchangeRates);
});
.get('/latest?base=DKK')
.reply(200, {
base: 'DKK',
rates: {
USD: 0.16075
}
})
test('convert 10 usd to dkk', async t => {
var opts = {
amount: 10,
from: 'usd',
to: 'dkk'
};
nock('https://blockchain.info')
.get('/ticker')
.reply(200, {
"USD" : {"15m" : 3755.12, "last" : 3755.12, "buy" : 3755.29, "sell" : 3754.95, "symbol" : "$"},
"DKK" : {"15m" : 23383.98, "last" : 23383.98, "buy" : 23385.04, "sell" : 23382.92, "symbol" : "kr"}
})
const converted = currency(opts);
nock('https://etherchain.org')
.get('/api/statistics/price')
.reply(200, {
"status": 1,
"data": [
{
"time": "2017-09-23T16:10:56.000Z",
"usd": 278.91
}
]
})
})
t.is(await converted, 57.755);
});
test('convert 1 USD to DKK', async t => {
const converted = currency({
amount: 1,
from: 'USD',
to: 'DKK'
})
t.is(await converted, 6.2208)
})
test('convert 1 DKK to USD', async t => {
const converted = currency({
amount: 1,
from: 'DKK',
to: 'USD'
})
t.is(await converted, 0.16075)
})
test('convert 1 BTC to USD', async t => {
const converted = currency({
amount: 1,
from: 'BTC',
to: 'USD'
})
t.is(await converted, 3755.12)
})
test('convert 1 BTC to DKK', async t => {
const converted = currency({
amount: 1,
from: 'BTC',
to: 'DKK'
})
t.is(await converted, 23383.98)
})
test('convert 1 DKK to BTC', async t => {
const converted = currency({
amount: 1,
from: 'DKK',
to: 'BTC'
})
t.is(await converted, 0.00004276431984632214)
})
test('convert 1 ETH to USD', async t => {
const converted = currency({
amount: 1,
from: 'ETH',
to: 'USD'
})
t.is(await converted, 278.91)
})
test('convert 1 ETH to DKK', async t => {
const converted = currency({
amount: 1,
from: 'ETH',
to: 'DKK'
})
t.is(await converted, 1735.043328)
})
test('convert 1 USD to ETH', async t => {
const converted = currency({
amount: 1,
from: 'USD',
to: 'ETH'
})
t.is(await converted, 0.0035853859667993255)
})