paper-man.user.js

// ==UserScript==
// @name         Paper-Man
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Download buttons for APS journals, springer link, nature and sciencedirect.
// @author       Philipp Bredol
// @match        https://*/*
// @grant        GM_download
// @grant        GM_openInTab
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        window.close
// ==/UserScript==

(async function() {
    'use strict';

    async function readArray(name) {
        var arr = undefined
        try {
            arr = JSON.parse(await GM_getValue(name, ''))
            } catch (e) {
                return []
            }
        if (!Array.isArray(arr)) {
            return []
        }
        return arr
    }

    async function writeArray(name, arr) {
        await GM_setValue(name, JSON.stringify(arr))
    }

    if(location.href.startsWith('https://journals.aps.org')) {
        var div = document.getElementById('export-article-link').parentNode
        var as = div.getElementsByTagName('a')
        var aPdf = as[0]
        var aBib = as[1]

        var aDown = document.createElement('a')
        aDown.className = 'small button'
        aDown.innerHTML = 'Download pdf and citation'
        aDown.addEventListener('click', (e) => {
            var loc = location.href.split('/')
            var loc2 = loc.pop()
            var loc1 = loc.pop()
            var dataId = loc1+'/'+loc2
            var baseUrl = loc[0]+'/'+loc[1]+'/'+loc[2]+'/'+loc[3]
            GM_download({'url': baseUrl+'/export/'+dataId, 'name': 'aps-paper.bib',
                         'onerror': (err)=>{alert(JSON.stringify(err))}})
            GM_download({'url': baseUrl+'/pdf/'+dataId, 'name': 'aps-paper.pdf',
                         'onerror': (err)=>{alert(JSON.stringify(err))}})
        })
        div.insertBefore(aDown, null)
    }
    else if(location.href.startsWith('https://link.springer.com')) {
        var div = document.getElementsByClassName('download-article test-pdf-link')[0]
        if(div == undefined) {
            div = document.getElementsByClassName('test-download-book-options u-interface download-book-link')[0]
        }
        var newDiv = document.createElement('div')
        newDiv.className = 'c-button'
        newDiv.style = 'margin-top:15px'
        newDiv.innerHTML = 'Download pdf and citation'
        newDiv.addEventListener('click', ()=>{
            var loc = location.href.split('/')
            var loc2 = loc.pop()
            var loc1 = loc.pop()
            var dataId = loc1+'/'+loc2
            GM_download({'url': 'https://citation-needed.springer.com/v2/references/'+dataId+'?format=bibtex&flavour=citation',
                         'name': 'springer-paper.bib', 'onerror': (err)=>{alert(err)}})
            GM_download({'url': 'https://link.springer.com/content/pdf/'+dataId+'.pdf',
                         'name': 'springer-paper.pdf', 'onerror': (err)=>{alert(err)}})
        })
        div.parentNode.insertBefore(newDiv, div.nextSibling)
    }
    else if(location.href.startsWith('https://www.nature.com')) {
        function downloadNaturePaper(articleUrl) {
            GM_download({'url': articleUrl+'.ris', 'name': 'nature-paper.ris', 'onerror': (err)=>{alert(JSON.stringify(err))}})
            GM_download({'url': articleUrl+'.pdf', 'name': 'nature-paper.pdf', 'onerror': (err)=>{alert(JSON.stringify(err))}})
        }

        // Add paper download button in 'single article view'
        var div = document.getElementsByClassName('c-pdf-download u-clear-both')[0]
        if (div) {
            var newDiv = document.createElement('div')
            newDiv.className = 'c-pdf-download__link'
            newDiv.style = 'margin-top:-15px;margin-bottom:15px;cursor:pointer'
            newDiv.innerHTML = 'Download pdf and citation'
            newDiv.addEventListener('click', ()=>{downloadNaturePaper(location.href)})
            div.parentNode.insertBefore(newDiv, div.nextSibling)
        }

        // Add checkboxes and coloring for 'article overview'
        else {
            window.setTimeout(()=>{location.reload()}, (10+Math.random())/10 * 3*60*60*1e3)

            var arts = document.getElementsByTagName('article')
            var readArticles = await readArray('read-nature-articles')
            var seenArticles = await readArray('seen-nature-articles')
            for (var i=0; i<arts.length; i++) {
                var art = arts[i]
                var a = art.getElementsByTagName('a')[0]
                var href = a.getAttribute('href')
                if (!href.startsWith('/')) {
                    continue
                }
                var paperUrl = 'https://www.nature.com'+href
                var cb = document.createElement('input')
                cb.type = 'checkbox'
                if (readArticles.indexOf(paperUrl) > 0) {
                    art.style.backgroundColor = '#ddffdd'
                    cb.checked = true
                    cb.disabled = true
                }
                else {
                    if (seenArticles.indexOf(paperUrl) > 0) {
                        art.style.backgroundColor = '#ffffee'
                    }
                    else {
                        art.style.backgroundColor = '#eeeeff'
                        if (!document.title.startsWith('*')) {
                            document.title = '*'+document.title
                        }
                        art.addEventListener('mouseover', (async (cb, art, a, paperUrl)=>{
                            art.style.backgroundColor = '#ffffee'
                            var seen = await readArray('seen-nature-articles')
                            seen.push(paperUrl)
                            await writeArray('seen-nature-articles', seen)
                        }).bind(0, cb, art, a, paperUrl))
                    }
                    cb.addEventListener('click', (async (cb, art, a, paperUrl)=>{
                        cb.checked = true
                        cb.disabled = true
                        art.style.backgroundColor = '#ddffdd'
                        downloadNaturePaper(paperUrl)
                        var read = await readArray('read-nature-articles')
                        read.push(paperUrl)
                        await writeArray('read-nature-articles', read)
                    }).bind(0, cb, art, a, paperUrl))
                }
                a.parentNode.insertBefore(cb, a)
            }
        }
    }
    else if(location.href.startsWith('https://www.sciencedirect.com')) {
        var div = document.getElementById('export-citation')
        var newDiv = document.createElement('div')
        newDiv.id = 'tamperedNode'
        newDiv.className = 'ExportCitation'
        newDiv.style = 'cursor:pointer'
        newDiv.innerHTML = '<a>Download pdf and citation</a>'
        newDiv.addEventListener('click', ()=>{
            GM_openInTab(location.href+'/pdf')
            GM_download({'url': 'https://www.sciencedirect.com/sdfe/arp/cite?format=text/x-bibtex&withabstract=true&pii='
                               +location.href.split('/').pop(),
                         'name': 'sciencedirect-paper.bib',
                         'onerror': (err)=>{alert(JSON.stringify(err))}})
        })
        window.setInterval(() => {
            if(!document.getElementById('tamperedNode')) {
                div.parentNode.insertBefore(newDiv, div.nextSibling)
            }
        }, 200)
    }
    else if(location.href.startsWith('https://pdf.sciencedirectassets.com')) {
        GM_download({'url': location.href,
                     'name': 'sciencedirect-paper.pdf',
                     'onerror': (err) => {alert(JSON.stringify(err))},
                     'onload': window.close })
    }
})();