// ==UserScript==
// @name         TUM eAccess Redirector
// @name:de      TUM eAccess Redirector
// @version      0.2.1
// @description  Automatically redirect to the proxified equivalent as provided by the libary of the Technische Universitaet Muenchen via the eAccess-System. TUM credentials required.
// @description:de   Userscript, dass auf einigen Seiten, mit denen die Universitätsbiblothek der Technischen Universität München kooperiert, die eAccess-Version aufruft.
// @author       zsewa
// @namespace https://greasyfork.org/users/57483

// @match *://opac.ub.tum.de/InfoGuideClient.tumsis/*
// @match *://bvb-new-primo.hosted.exlibrisgroup.com/primo_library/libweb/action/search.do*vid=49BVB_TUM01_VU1*
// @match *://bvb-new-primo.hosted.exlibrisgroup.com/primo_library/libweb/action/dlSearch.do*vid=49BVB_TUM01_VU1*
// @match *://mediatum.ub.tum.de/*
// @match *://sfx.bib-bvb.de/*
// @match *://ezb.uni-regensburg.de/ezeit/*bibid=TUM*
// @match *://ezb.uni-regensburg.de/index.phtml*bibid=TUM*
// @match *://rzblx1.uni-regensburg.de/ezeit/ezb.phtml*bibid=TUM*
// @match *://rzblx10.uni-regensburg.de/dbinfo/*
// @match *://dbis.uni-regensburg.de/dbinfo/dbliste.php*bibid=TUM*

// @match *://science.sciencemag.org/*
// @match *://www.sciencedirect.com/*
// @match *://www.nature.com/*
// @match *://pubchem.ncbi.nlm.nih.gov/*

// @match *://*thieme-connect.de/*
// @match *://link.springer.com/*
// @match *://springer.com/*
// @match *://apps.webofknowledge.com/*
// @match *://www.emeraldinsight.com/*
// @match *://www.degruyter.com/*
// @match *://ieeexplore.ieee.org/*
// @match *://onlinelibrary.wiley.com/*
// @match *://www.worldscientific.com/*
// @match *://ebooks.worldscinet.com/*

// @match *://www.video2brain.com/*

// @grant			GM_setValue
// @grant			GM_getValue
// @downloadURL none
// ==/UserScript==

/*
CHANGELOG
v 0.1: initial version
v 0.2: Modes added
*/

function set_usermode(value){
    GM_setValue('eAccess_reloader_mode', value);
}

(function() {
    'use strict';
    //modes:
    //0: Default, show redirect page
    //1: Confirmation, ask always before reload
    //2: Silent, redirect without showing html page
    //set_usermode(0);
    var usemode = GM_getValue('eAccess_reloader_mode', 0);
    var html = '<center><img src="http://www.ub.tum.de/files/eacessbutton.jpg" height="40" width="40"></div><br><br>Resource is reloaded via TUM eAccess...<br><br>You are redirected form '+window.location.hostname+' to the fitting resource in the TUM eAccess system. Login may be required.<br><br>To change the behavior of this userscript open it in your Tapermonkey or Greasemonkey extention. You can specify a mode there.<br><br><br><br><br><br>Thanks for using TUM eAccess Redirector.</center>';
    switch(usemode) {
        case 1:
            //confirmation mode
            if (window.confirm("Redirect to TUM eAccess?")){document.write(html); void(location.href='https://eaccess.ub.tum.de/login?url='+location.href);}
            break;
        case 2:
            //silent mode
            void(location.href='https://eaccess.ub.tum.de/login?url='+location.href); //default way to reload via eacess
            break;
        default:
            //default mode
            document.write(html);
            var a = document.createElement('a');
            a.appendChild(document.createTextNode('Config 1'));
            a.href = '#';
            a.addEventListener('click', function(){GM_setValue('config',1);}, false);
            void(location.href='https://eaccess.ub.tum.de/login?url='+location.href); //default way to reload via eacess
    }
})();