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const prettyBytes = require('pretty-bytes');
const moment = require('moment');
const querystring = require('querystring');
function humanTimeAgo(utcDate) {
const diff = moment.utc().diff(moment.utc(utcDate));
const uptime = {};
uptime.s = Math.round(diff / 1000);
uptime.m = Math.floor(uptime.s / 60);
uptime.h = Math.floor(uptime.m / 60);
uptime.d = Math.floor(uptime.h / 24);
uptime.s %= 60;
uptime.m %= 60;
uptime.h %= 24;
let readableUptime = '';
readableUptime += uptime.d ? ` ${uptime.d}d` : '';
readableUptime += uptime.h ? ` ${uptime.h}h` : '';
readableUptime += !uptime.d || !uptime.h && uptime.m ? ` ${uptime.m}m` : '';
return readableUptime.trim();
}
const filters = {
bandwidth: node => `${prettyBytes(node.advertised_bandwidth)}/s`,
uptime: node => {
// Check node is up
if(!node.running) {
return 'Down';
}
// Check uptime
return humanTimeAgo(node.last_restarted);
},
pagination: (req, direction) => {
// Clone query string
const query = Object.assign({}, req.query);
// Set page as 1 by default
query.p = query.p ? query.p : 1;
// Update page
if(direction == 'next') {
query.p++;
} else if(direction == 'prev') {
query.p--;
}
// Encode query string
return `/?${querystring.encode(query)}`;
},
name: node => node.nickname
|| node.fingerprint && node.fingerprint.slice(0, 8)
|| node.hashed_fingerprint && node.hashed_fingerprint.slice(0, 8),
status: node => node.running ?
`Up for ${humanTimeAgo(node.last_restarted)}` :
`Down for ${humanTimeAgo(node.last_seen)}`
};
module.exports = app => Object.keys(filters).forEach(filter => {
app.settings.nunjucksEnv.addFilter(filter, filters[filter])
});