/***********************
 * Start UDOIT Student *
 ***********************/

UdoitConfig = {
  supportedAlternates: ['pdf', 'html', 'mp3', 'epub', 'txt'],
}

function loadUdoitScript() {
  if (!UdoitConfig.toolUri) {
    UdoitConfig.toolUri = 'https://udoit3.ciditools.com';
  }
  let script = document.createElement('script'),
    firstScript = document.getElementsByTagName('script')[0]
  script.src = `${UdoitConfig.toolUri}/build/studentController.js`
  script.crossOrigin = 'anonymous'
  if (null !== firstScript.parentNode) {
    firstScript.parentNode.insertBefore(script, firstScript)
    console.log('udoit student controller added')
  }
}

function checkForUdoit() {
  let body = document.getElementsByTagName('body')[0]
  if (!body.className.includes('udoit-student-loaded')) {
    loadUdoitScript()
    body.className += ' udoit-student-loaded'
  }
}
checkForUdoit()
/*** END UDOIT Student ***/

/*EvaluationKIT START*/var evalkit_jshosted = document.createElement('script');evalkit_jshosted.setAttribute('defer', 'defer');evalkit_jshosted.setAttribute('type', 'text/javascript');evalkit_jshosted.setAttribute('src', 'https://nih.evaluationkit.eu/canvas/js');document.getElementsByTagName('head')[0].appendChild(evalkit_jshosted);/*EvaluationKIT END*/

//Navigasjonsmeny i moduler med NIH-farger (CSS i JS), tilpasset av LINK/UiO og oppdatert for NIH
if (!ENV.COURSE_ID) ENV.COURSE_ID = /\/courses\/(\d+)/.exec(location.pathname)[1];
let uio_entireCourseStructure = {modules:{}};
uio_entireCourseStructure.done = function(){
    return this.requests && this.answers == this.requests
};

function uioGetEntireStructure (){
    //load all modules and items, and insert all items into one array for each module -- uio_entireCourseStructure.modules[moduleid] = items json-data.
    //requests and answers are kept track of to check if it is done.
    uio_entireCourseStructure.requests = 1;
    uio_entireCourseStructure.answers = 0;
    $.getJSON(`${location.origin}/api/v1/courses/${ENV.COURSE_ID}/modules?per_page=999`,(modules)=>{
        for (let i=0; i<modules.length; i++){
            uio_entireCourseStructure.requests++;
            $.getJSON(`${location.origin}/api/v1/courses/${ENV.COURSE_ID}/modules/${modules[i].id}/items?per_page=999`,(items)=>{
                uio_entireCourseStructure.modules[modules[i].id] = items;
                uio_entireCourseStructure.answers++;
            })
        }
        uio_entireCourseStructure.answers++;
    });
}
function uioGetCurrentModuleItemId() {
    if (location.search.indexOf('menu=off')!=-1) return false;
    let match = /courses\/\d+\/modules\/items\/(\d+)$/.exec(location.pathname);
    if (match) return match[1];
    match = /module_item_id=(\d+)/.exec(location.search);
    if (match){
        //a link from another page can have wrong module_item_id and still show the correct page, so check that the id is valid
        if (uioGetCurrentModuleId(match[1])) return match[1];
    }
    //lacking module_item_id or has erroneous module_item_id
    for (let moduleid in uio_entireCourseStructure.modules) {
        for (let i=0; i<uio_entireCourseStructure.modules[moduleid].length; i++){
            let itemurl = /\/courses.*/.exec(uio_entireCourseStructure.modules[moduleid][i].url);
            if (itemurl && itemurl[0] == location.pathname){
                return uio_entireCourseStructure.modules[moduleid][i].id;
            }
        }
    }
}

function uioGetCurrentModuleId(moduleItemId){
    for (let moduleid in uio_entireCourseStructure.modules) {
        for (let i=0; i<uio_entireCourseStructure.modules[moduleid].length; i++){
            if (uio_entireCourseStructure.modules[moduleid][i].id == moduleItemId) return moduleid;
        }
    }
    return false;
}

function uioMakemenu(items, itemId){
    //insert css
    let style = document.createElement('style');
    style.type = 'text/css'
    style.innerText = `
ul.uioMeny {
    list-style-type: none;
    background-color: #F5F5F5; /* Lys bakgrunn */
    font-size: 95%;
    border: 1px solid #C60C30; /* Overskriftsfarge */
    border-radius: 3px;
}
.uioMeny li a {
    display: block;
    color: Black;
    padding: 3px 0 3px 16px !important;
    text-decoration: none;
    word-wrap: break-word;
}
.uioMeny li a:hover {
    background-color: #FFEBEB; /* Lys rød hover */
    color: Black;
}
.uioMeny li {
    padding: 0px !important;
    text-align: left;
    border-bottom: 1px solid White;
}
.uioMeny li:last-child {
    border-bottom: none;
}
.uioMeny .module-home a {
    font-weight: bold;
    font-size: 100%;
    background-color: #C60C30; /* Overskriftsfarge */
    color: White !important;
}
.uioMeny .module-home a:hover {
    background-color: #FFEBEB; /* Lys rød hover */
}
.uioMeny li.uioMeny-aktiv {
    padding: 3px 0px 3px 16px !important;
    background-color: #3D3C3C; /* Mørk grå for aktivt element */
    color: White !important;
}
`;
    document.head.appendChild(style);
    //make menu
    let menuhtml = '<ul class="uioMeny">';
    menuhtml += `<li class="module-home"><a href="/courses/${ENV.COURSE_ID}/modules/">Tilbake til moduloversikten</a></li>`;
    for (let i=0; i<items.length; i++){
        menuhtml += '<li';
        if (items[i].completion_requirement && items[i].completion_requirement.completed){
            menuhtml += ' style="background:#FFEBEB;"'; /* Lys NIH-rød for fullførte elementer */
        }
        // Legg til sjekk for type "SubHeader"
        if (items[i].type === "SubHeader") {
            menuhtml += `>${items[i].title}</li>`;
        } 
        else{
            if(items[i].id == itemId){//this is the current item
                menuhtml += ` class="uioMeny-aktiv">${items[i].title}</li>`;
            }else{
                menuhtml += `><a href="${items[i].html_url}">${items[i].title}</a></li>`;
            }
        }
    }
    menuhtml += '</ul>';
    //insert menu
    $("#right-side").prepend(menuhtml);
    $("#right-side-wrapper").show();
    $("#right-side").show();
}

function uioRightmenuTimedFunction(){
    if (uio_entireCourseStructure.done()){
        clearInterval(uioRightmenuInterval);
        let itemId = uioGetCurrentModuleItemId();
        if (itemId){
            let moduleId = uioGetCurrentModuleId(itemId);
            uioMakemenu(uio_entireCourseStructure.modules[moduleId],itemId);
        }
    }
}

uioGetEntireStructure();
let uioRightmenuInterval = setInterval(uioRightmenuTimedFunction, 200);