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'use strict'
const Promise = require('bluebird')
const cheerio = require('cheerio')
const request = Promise.promisify(require('request'))
let userIndex
let lastUpdate
function updateUserIndex () {
return new Promise(function (resolve, reject) {
process.stdout.write('Updating user index... ')
request(`http://www.meetingpointmco.nl/Roosters-AL/doc/dagroosters/frames/navbar.htm`)
.then(function (page) {
lastUpdate = new Date()
page = page.body
const $ = cheerio.load(page)
const $script = $('script').eq(1)
const scriptText = $script.text()
const regexs = [/var classes = \[(.+)];/, /var teachers = \[(.+)];/, /var rooms = \[(.+)];/, /var students = \[(.+)];/]
const items = regexs.map(function (regex) {
return scriptText.match(regex)[1].split(',').map(function (item) {
return item.replace(/"/g, '')
})
})
userIndex = ([]
.concat(items[0].map(function (item, index) {
return {
type: 'c',
value: item,
index: index
}
}))
.concat(items[1].map(function (item, index) {
return {
type: 't',
value: item,
index: index
}
}))
.concat(items[2].map(function (item, index) {
return {
type: 'r',
value: item,
index: index
}
}))
.concat(items[3].map(function (item, index) {
return {
type: 's',
value: item,
index: index
}
})))
process.stdout.write('done.\n')
resolve(userIndex)
})
.catch(error => {
process.stdout.write('failed.\n')
reject(error)
})
})
}
function getUserIndex () {
return new Promise((resolve, reject) => {
if (lastUpdate == null) {
updateUserIndex().then(resolve, reject)
} else if (new Date() - lastUpdate > 10 * 60 * 1000) { // 10 minutes
updateUserIndex().then(resolve, function () {
console.warn('Unable to update userIndex, using cached.')
resolve(userIndex)
})
} else {
resolve(userIndex)
}
})
}
module.exports = getUserIndex
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