-
Notifications
You must be signed in to change notification settings - Fork 8
/
calculate.js
58 lines (51 loc) · 2.25 KB
/
calculate.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
const axios = require('axios')
const fs = require('fs');
module.exports = {
bfx: async function() {
const hkdrate = 0.1287 // approximate rate
const btcDataURL = "https://api-pub.bitfinex.com/v2/ticker/tBTCUSD"
const response = await axios.get(btcDataURL)
const data = response.data
//console.log(data[6])
const satDenominator = 100000000
// see docs : https://docs.bitfinex.com/reference#rest-public-ticker
btcLastPrice = data[6]
const sathkd = Math.round((1 / btcLastPrice) * satDenominator * hkdrate)
//console.log("bitfinex last price: ", btcLastPrice, "current satHKD: ", sathkd)
return sathkd
},
get10yr: async function() {
// console.log("get10yr")
try {
// const content = await fs.readFile('./public/hkd_historical')
const content = fs.readFileSync('./public/hkd_historical', { encoding: 'utf8' })
const historical = JSON.parse(content)
hist_entries = []
let datelist = []
// get all the years you need from 1 - 10
for (let i = 1; i < 11; i++) {
const y = new Date(new Date().setFullYear(new Date().getFullYear() - i)).toISOString().slice(0, 10)
datelist.push(y)
}
for (let j = 0; j < historical.length; j++) {
const hdate = historical[j]['date']
if (datelist.includes(hdate)) {
hist_entries.push(historical[j])
}
}
// console.log(hist_entries)
let final_list = []
let today_sats = await this.bfx()
for (var v = 0; v < hist_entries.length; v++) {
const date = new Date(hist_entries[v]['date'])
year = date.getFullYear();
rawsat = hist_entries[v]['sathkd_rate']
percentage = (-100 * ((rawsat - today_sats) / rawsat)).toFixed(3)
final_list.push({ "year": date.toLocaleDateString(), "sats": rawsat.toLocaleString("en-US"), "percent": percentage });
}
return final_list.reverse()
} catch (error) {
console.error("Error trying to read file ", error)
}
}
}