this.$ = this.jQuery = jQuery.noConflict(true);
// ==UserScript==
// @name         Bazar minimalne ceny
// @namespace    http://tampermonkey.net/
// @version      0.8.3
// @description  Zapamiętuje w local storage najniższe ceny gier z listy życzeń i pokazuje je obok aktualnie najniższej ceny. Jeśli aktualna cena jest mniejsza od dotychczas zapisanej, wtedy tytuł oznaczany jest na zielono, jeśli cena jest równa naniższej - na niebiesko.
// @author       nochalon
// @match        https://bazar.lowcygier.pl/
// @match        https://bazar.lowcygier.pl/?*
// @icon         https://bazar.lowcygier.pl/favicon.ico
// @require      https://greasyfork.org/scripts/34527-gmcommonapi-js/code/GMCommonAPIjs.js?version=751210
// @require      https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/jquery-timeago/1.5.4/jquery.timeago.min.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/jquery-timeago/1.5.4/locales/jquery.timeago.pl.js
// @grant        GM_registerMenuCommand
// @grant        GM.registerMenuCommand
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    GMC.registerMenuCommand('Usuń całą historię', () => {
        if (confirm(
            "Aktualnie zapisanych jest " + localStorage.length + " tytułów. Czy chcesz je wszystkie usunąć?")) {
            localStorage.clear();
        }
    });
    GMC.registerMenuCommand('Usuń historię tytułu', () => {
       var title = prompt(
           "Podaj tytuł gry której historię chcesz usunąć");
        if (title != null) {
            if (!removeFromLocalStorage(title)) {
                alert("Nie znaleziono tytułu o nazwie: " + title);
            }
        }
    });

    var ths = document.querySelectorAll(".row.game-list.wishlist-item");
    console.log("Local storage contains " + localStorage.length + " items");
    var lowerPriceItems = [];
    for (var i = 0; i < ths.length; i++) {
        var titleElem = ths[i].querySelector(".media-heading > a");
        var title = titleElem.innerHTML;
        var priceElem = ths[i].querySelector(".pc > p.prc");
        var price = priceElem.innerHTML;
        var priceFloat = parseFloat(price.replace(',', '.'));
        var inStorage = JSON.parse(localStorage.getItem(title));

        if (inStorage === null) {
            console.log("Adding new entry for " + title + " with price " + priceFloat);
            saveToLocalStorage(title, priceFloat);
            continue;
        } else if (inStorage.price > priceFloat) {
            console.log("Replacing price for " + title + " " + inStorage.price + " with " + priceFloat);
            saveToLocalStorage(title, priceFloat);
        }

        var priceParent = priceElem.parentNode;
        appendIntegrations(title, priceParent);

        var diff = inStorage.price - priceFloat;
        if (diff > 0) {
            titleElem.style.color = '#00E000';
            priceElem.style.color = '#00E000';
            appendStoredPrice(inStorage.price, diff, priceParent);
            lowerPriceItems.push({'title': title, 'diff': diff});
        } else if (diff < 0) {
            appendStoredPrice(inStorage.price, diff, priceParent);
            appendTime(inStorage.timestamp, priceParent);
        } else {
            titleElem.style.color = '#0000E0';
            priceElem.style.color = '#0000E0';
            appendTime(inStorage.timestamp, priceParent);
        }
    }
    if (lowerPriceItems.length > 0) {
        appendLowerPricesBanner(document.querySelector(".banner-top"), lowerPriceItems);
    }
})();

function appendLowerPricesBanner(bannerTop, items) {
    var alert = document.createElement("p");
    bannerTop.insertBefore(alert, bannerTop.firstChild);
    alert.classList = "lowerPrices";
    alert.style = "font-weight: bold; font-size: 1.3em; background: -webkit-linear-gradient(135deg, rgb(192, 192, 192) 0%, rgb(214, 214, 214) 25%, rgb(230, 230, 230) 100%); background-color: rgb(230,230,230); background: linear-gradient(135deg, rgb(192, 192, 192) 0%, rgb(214, 214, 214) 25%, rgb(230, 230, 230) 100%); border: 2px solid lightgrey; padding: 6px;";
    alert.innerHTML = "<p>Pojawiły się nowe najniższe ceny dla:</p><ul>";
    for (let i = 0; i < items.length; i++) {
        alert.innerHTML += "<li>" + items[i].title + " (" + (parseFloat(-items[i].diff).toFixed(2)) + "zł)</li>";
    }
    alert.innerHTML += "</ul>";
}

function appendTime(timeVal, elem) {
    var time = document.createElement("time");
    var timeString = new Date(timeVal);
    time.innerHTML = timeString.toLocaleString();
    time.dateTime = timeString.toISOString();
    time.classList = "timeago";
    elem.appendChild(time);
    jQuery(time).timeago();
}

function appendStoredPrice(price, diff, elem) {
    var priceElem = document.createElement("p");
    var val = diff/price*100.0;
    priceElem.innerHTML = "" + parseFloat(price).toFixed(2) + "zł (" + (val > 0.0 ? "+" : "") + val.toFixed(2) + "%)";
    elem.appendChild(priceElem);
}

function appendIntegrations(title, elem) {
    var newPriceElem = document.createElement("p");
    elem.appendChild(newPriceElem);
    var ggDeals = createGGDealsButton(title);
    var allKeyStop = createAllKeyShopButton(title);
    newPriceElem.appendChild(ggDeals);
    newPriceElem.appendChild(allKeyStop);
}

function saveToLocalStorage(title, price) {
    var newItem = {'price': price, 'timestamp': Date.now()};
    localStorage.setItem(title, JSON.stringify(newItem));
}

function removeFromLocalStorage(key) {
    var keyLowerCase = key.toLowerCase();
    for (var a in localStorage) {
        if (a.toLowerCase() === keyLowerCase) {
            localStorage.removeItem(a);
            return true;
        }
    }
    return false;
}

function createGGDealsButton(title) {
    return createLinkWithImageAndCaption("https://gg.deals/favicon.ico",
                                         "https://gg.deals/games/?title=" + title,
                                         "Porównaj ceny " + title + " na GG.deals");
}

function createAllKeyShopButton(title) {
    return createLinkWithImageAndCaption("https://www.allkeyshop.com/favicon.ico",
                                         "https://www.allkeyshop.com/blog/catalogue/category-pc-games-all/search-" + title + "/sort-price-asc/",
                                         "Porównaj ceny " + title + " na AllKeyShop");
}

function createLinkWithImageAndCaption(img, href, caption) {
    var elem = document.createElement("a");
    var imgElem = document.createElement("img");
    elem.appendChild(imgElem);
    elem.href = href;
    elem.target = "_blank";
    elem.title = caption;
    imgElem.src= img;
    imgElem.style.width = "20%";
    imgElem.style.height = "20%";
    return elem;
}