// ==UserScript==
// @name         E-sim - MU transactions enhancement
// @namespace    http://history.unixstorm.org/staff/js/
// @version      0.1
// @description  adds possibility to see up to 50 (value can be changed) pages of MU transactions on one page.
// @author       You
// @include      /^https?:\/\/(.*)\.e-sim\.org\/militaryUnitLogs.html?.*$/
// @grant        none
// ==/UserScript==
globalStop = false;
loadedPages = 0;
waitingPages = 0;
reqSent = 0;
counter = 0;
max = 50;

addButtons();


function addButtons() {

    const $button = $(`#container > div.foundation-style.column-margin-both.column-margin-vertical.column.small-8.foundation-text-center.no-style > div > form > input[type="submit"]:nth-child(7)`).clone();


    $($button).clone().insertAfter(`#container > div.foundation-style.column-margin-both.column-margin-vertical.column.small-8.foundation-text-center.no-style > div > form > input[type="submit"]:nth-child(7)`)
        .attr('id', 'checkTrans')
        .val(`Load next pages`)
        .click(function(event) {
        start();
        event.preventDefault();

    }

              );

}


function start() {
    var $link = $(`#pagination-digg > li.next > a`).attr('href');

    if (!$link) {
        updateButton(`No pages to check!`);
    } else {

        var $last = $($(`#pagination-digg > li:nth-last-child(2)`).html()).attr('href');

        //next page number
        const nextPageNr = parseInt(/&page=(.*)$/.exec($link)[1]);

        //try to get last page number
        lastPage = parseInt(/&page=(.*)$/.exec($last)[1]);
        lastRealPage = lastPage;


        const $pagePosition = $link.indexOf("page=");
        $linkTemplate = $linkTemplate = $link.substr(0, $pagePosition) + 'page=';


        if (lastPage > max) {
            lastPage = max + nextPageNr - 1;
        } else {
            max = lastPage - nextPageNr + 1;

        }
        for (i = nextPageNr, j = 1; j <= max; i++, j++) {

            (function(i) {

                setTimeout(function() {

                    load($linkTemplate + i, i);

                }, j * 500);

            })(i);
        }
    }
}

function load($link, i) {

    const currentPage = i;

    if (globalStop === false || currentPage < lastRealPage) {

        reqSent++;
        updateButton(`Requests sent: ` + reqSent + ` (max ` + max + `), Loaded pages ` + loadedPages + `...`);
        console.log(`sending request: ` + $link);

        $("<tr>").html(`<th colspan="6" bgcolor="black" height="50px"><strong><a href="` + $link + `">Page ` + currentPage + `</a></strong></th>`)
            .insertAfter(`#container > div.foundation-style.column-margin-both.column-margin-vertical.column.small-8.foundation-text-center.no-style > table > tbody > tr:last-child`)
            .attr('id', 'page' + currentPage);

        waitingPages++;

        var $page = $.get($link, function() {
            processPage($page, $link, currentPage);

        });
    }

}

function processPage(page, $link, currentPage) {

    if (globalStop === false || currentPage < lastRealPage) {

        console.log(`proccesing page` + currentPage);

        var $tbody = $(page.responseText).find('tbody')[0];
        $tbody.firstChild.remove();

        $($tbody.innerHTML).insertAfter(`#page` + currentPage)
            .attr('class', 'pageContent' + currentPage);

        loadedPages++;
        updateButton(`Requests sent: ` + reqSent + ` (max ` + max + `), Loaded pages ` + loadedPages + `...`);

        const $nextPage = $(page.responseText).find('li.next')[0];

        if (true) {

            if (currentPage === lastPage) {
                lastCheck();
                const next = currentPage + 1;

                $("<tr>").html(`<th colspan="6" bgcolor="black" height="50px"><strong><a href="` + $linkTemplate + next + `">Continue scanning and go to page ` + next + `</a></strong></th>`)
                    .insertAfter(`#container > div.foundation-style.column-margin-both.column-margin-vertical.column.small-8.foundation-text-center.no-style > table > tbody > tr:last-child`)
                    .attr('id', 'page' + next);

            }
        } else {

            globalStop = true;

            if (lastRealPage > currentPage) {
                lastRealPage = currentPage;
                console.log(`Last real page: ` + lastRealPage);
            }
        }

    } else {
        console.log(`ignoring: ` + currentPage);
        lastCheck();
    }
    waitingPages--;

    if (waitingPages === 0) {
        //lastCheck();
    }
}

function updateButton(text) {
    $(`#checkTrans`).val(text);
    console.log(text);
}

function lastCheck() {

    var h = parseInt(lastRealPage) + 1;
    var h2 = parseInt(lastRealPage) + parseInt(lastPage);
    for (h; h <= h2; h++) {

        $(`.pageContent` + h).hide();
        $(`#page` + h).hide();

    }
    updateButton(`Finished, Loaded pages ` + loadedPages);

}