mu.js/mu.js

µ is the new $

'use strict'
/* µ.js */

const fs = require('fs')
const cp = require('child_process')
const path = require('path')
const request = require('request')
const cheerio = require('cheerio').load
const md5 = require('md5')
const base64 = require('./b64')

const jQuery = (string, options) => new Promise((deliver, fail) => {
    try {
        deliver(
            cheerio(string, options)
        )
    } catch (reason) {
        fail(reason)
    }
})

const visit = (url, options, req = { /* */ }) => new Promise((deliver, fail) => {
    const opt = { url }
    for (let option in req) opt[option] = req[option]
    request(opt, (problem, response, body) => {
        if (problem)
            fail(problem)
        jQuery(body, options).then(jq => {
            jq.response = response
            deliver(jq)
        }).catch(fail)
    })
})

const µ = (url, options) => visit(url, options)

µ.fromFile = (path, options) => new Promise((deliver, fail) => {
    fs.readFile(path, (problem, buffer) => {
        if (problem)
            fail(problem)
        jQuery(buffer.toString(), options).then(deliver).catch(fail)
    })
})

µ.fromFileSync = (path, options) => cheerio(
    fs.readFileSync(path).toString(), options
)

µ.fromString = (string, options) => cheerio(string, options)

µ.sync = url =>
    cheerio(
        cp.execSync(`node ${path.join(__dirname, 'sync.js')} "${url}" "${base64.encode(JSON.stringify({}))}"`).toString().trim()
    )


module.exports = µ