Parser / urait.ru

(() => {
const ID = window.content_id;
const PAGES_URL = 'https://urait.ru/viewer/getData/' + ID;
const PAGE_URL = 'https://urait.ru/viewer/getPage/' + ID + '/$1';
const HEADERS = {
    'X-Requested-With': 'XMLHttpRequest'
};

/*** COMMON ***/

function addCSS(css) {
    let styleElem = document.createElement( 'style' );
    styleElem.appendChild( document.createTextNode( css ) );
    document.getElementsByTagName( 'head' )[0].appendChild( styleElem );
}

/*** REQUEST ***/

async function request() {
    const response = await requestPages();
    return await processPages(response);
}

async function requestPages(){
    const request = await fetch(PAGES_URL, {
        'method' : 'POST',
        'headers' : HEADERS
    });
    return await request.json();
}

async function processPages(response) {
    const links = [];
    for (let i = 1; i <= response.pages.count; i++){
        let link = PAGE_URL.replace('$1', i);
        links.push(link);
    }
    return links;
}

/*** RENDER ***/

function render(links) {
    addCSS('\
       .hack_container { position:fixed; top:0; right:0; bottom:0; left: 0; padding:24px; overflow:auto; z-index:9999; background:white; }\
       .hack_container textarea { width:100%; height:100%; resize:none; }\
       .hack_container_close { position:absolute; top:4px; right: 24px; z-index:2; }\
   ');

    const container = document.createElement('div');
    container.classList.add('hack_container');

    const close = document.createElement('div');
    close.innerText = 'Закрыть';
    close.classList.add('hack_container_close');
    close.addEventListener('click', function(){
        document.body.removeChild(container);
    });
    container.appendChild(close);

    const textarea = document.createElement('textarea');
    textarea.value = links.join('\n');
    container.appendChild(textarea);

    document.body.appendChild(container);
}

/*** BOOTSTRAP ***/

request().then(render);

})();