/**
 * This class manages the display, adding of items, and editing of the quote cart
 * @author Gabe Rose (gabe@equisolve.com)
 */
function QuoteCart() {
    var buttonSelector = ".js-add-quote";
    this.cookieId = "QuoteCart";
    this.items = Cookies.get(this.cookieId) || '';
    this.$button = $(buttonSelector);
    this.quantityEl = document.getElementById('Quantity') || null;

    this.$button.on('click', function(e) {
        e.preventDefault();
        var title = $(e.currentTarget).data('product');
        //console.log('Title: ' + title);
        var quantity = this.quantityEl ? this.quantityEl.value : 1;
        this.addToQuoteCart(title, quantity);
        //this.displayModal($(e.target).data('product'));
    }.bind(this));

    // On initalization, check to see if any items have a quantity of zero. If they do, remove them
    this.removeEmptyProducts();
    
}

/** 
 * When called, gets the product information via the Shopify JSON API, and then adds it to
 * the cart cookie
 */
QuoteCart.prototype.addToQuoteCart = function(title, quantity) {
    console.log('addToQuoteCart');
    this.getProductInformation(title, null, function(result) {
        $.when(this.addToCookie({
            id: result.id,
            quantity: quantity
        })).then(function(){
            document.getElementById('quote-cart-frame').contentWindow.location.reload();
            window.location.href = '/pages/quote-cart-checkout';
        });
    }.bind(this));
}

/**
 * Looks up a product by title and returns all the necessary information for the quote cart
 * to function.
 * @param title | string Name of the product
 * @param id | mixed ID of the product
 * @param callback | function Callback function that works with the data returned from the AJAX call
 */
QuoteCart.prototype.getProductInformation = function(title, id, callback) {
    //console.log('getProductInformation');
    //console.log(title);
    var id = id || null;
    var title = title || null;
    $.getJSON("/collections/quotable-items/products.json", function(data) {
        //console.log(title + ' ' + id);
        //console.log('Success: products.json accessed successfully');
    }).error(function(){
        //console.log('Error: There was an error reaching products.json');
    }).fail(function(){
        //console.log('Failed: There was an error reaching products.json');
    }).done(function(data){
        //console.log(title + ' ' + id);
        for (var i = 0; i < data.products.length; i++) {
            if ((title && data.products[i].title == title) || (id && data.products[i].id == id)) {
                console.log('ID: ' + data.products[i].id + ' Title: ' + data.products[i].title);
                return callback({
                    id: data.products[i].id,
                    title: data.products[i].title,
                    image: data.products[i].images[0].src,
                    handle: data.products[i].handle
                });
            }
        }
        //console.log('Success: products.json access is done');
    });
}

/**
 * Updates the quantity of a product for a quote
 * @param id | mixed The ID of the product
 * @param quantity | number The new quantity
 */
QuoteCart.prototype.updateProductQuantity = function(id, quantity) {
    var items = this.items.split(';');
    for (var i = 0; i < items.length; i++) {
        var item = items[i],
            itemID = item.split(':')[0],
            itemQuantity = item.split(':')[1];

            if (itemID == id) itemQuantity = quantity;
            item = itemID + ':' + itemQuantity;
            items[i] = item;
    }
    items = items.join(';');
    this.updateCookie(items);
    this.removeEmptyProducts();
}

/**
 * Checks for any products in the current quote with a quantity of zero, and removes them.
 */
QuoteCart.prototype.removeEmptyProducts = function() {
    var items = this.items.split(';');
    for (var i = 0; i < items.length; i++) {
        var item = items[i],
            itemID = item.split(':')[0],
            itemQuantity = item.split(':')[1];

            if (itemQuantity == 0) {
                items.splice(i,1);
            }
    }
    this.updateCookie(items.join(';'));
}

/**
 * Checks the current cookie and adds new data to the cookie
 * @param data | object An object with id and quantity properties
 */
QuoteCart.prototype.addToCookie = function(data) {
    //console.log('addToCookie');
    var currentCookie = this.items;
    var newCookie = currentCookie;
    if (newCookie) newCookie += ";";
    newCookie += data.id + ':' + data.quantity;
    Cookies.set(this.cookieId, newCookie);
    this.items = newCookie;
    //console.log('New cookie: ' + newCookie);
}

/**
 * Replaces the current stored cookie with an updated cookie.
 * @param cookie | string A cookie string
 */
QuoteCart.prototype.updateCookie = function(cookie) {
    Cookies.set(this.cookieId, cookie);
    this.items = cookie;
}

/**
 * Checks the current cookie for the supplied ID and removes it from the cookie if found
 * @param id | mixed The ID of the product to remove.
 */
QuoteCart.prototype.removeFromCookie = function(id) {
    var currentCookie = this.items;
    var newCookie = currentCookie.split(';');
    for (var i = 0; i < newCookie.length; i++) {
        if (newCookie[i].indexOf(id)) {
            newCookie.splice(i,1);
        }
    }
    newCookie.join(';');
    Cookies.set(this.cookieId, newCookie);
    this.items = newCookie;
    return;
}

/**
 * Checks the current cookie for duplicates and combines duplicated products into one
 */
QuoteCart.prototype.combineDuplicates = function() {
    if (this.items == '' || !this.items || this.items == null) {
        return;
    }
    
    var items = this.items.split(';');
    
    var combinedItems = [];
    var allIDs = [];
    for (var i = 0; i < items.length; i++) {
        var item = items[i],
            itemID = item.split(':')[0],
            itemQuantity = item.split(':')[1];

            allIDs.push(itemID);

            if (itemID in combinedItems) {
                combinedItems[itemID] = parseInt(combinedItems[itemID], 10) + parseInt(itemQuantity, 10);
            } else {
                combinedItems[itemID] = parseInt(itemQuantity, 10);
            }
    }
    var uniqueIDs = Array.from(new Set(allIDs));
    var finalItems = [];
    uniqueIDs.forEach(function(item, i){
        finalItems.push(item + ':' + combinedItems[item]);
    });
    items = finalItems.join(';');
    this.updateCookie(items);
    this.removeEmptyProducts();
    return;
}

/**
 * Unsets cookie
 */
QuoteCart.prototype.unsetCookie = function() {
    // setting cookie to past date in order to unset
    Cookies.remove(this.cookieId);
    return;
}

/**
 * Displays a modal confirming that the user has added an item to their cart
 * @param title | string The title of the product added
 */
QuoteCart.prototype.displayModal = function(title) {
    //console.log('test');
    $('body').append(
        '<div id="modal" class="modal fade" tabindex="-1" role="dialog">\
            <div class="modal-dialog" role="document">\
                <div class="modal-content">\
                    <div class="modal-body">\
                        <p>' + title + ' has been successfully added to your Quote Cart</p>\
                    </div>\
                    <div class="modal-footer">\
                        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>\
                        <a href="#" class="btn">Go to Quote Cart</a>\
                    </div>\
                </div>\
            </div>\
        </div>'
    )
    
}

var cart = new QuoteCart();