odoo.define("website_decimal_qty.website_sale", function (require) {
    "use strict";

    var publicWidget = require("web.public.widget");
    var wSaleUtils = require("website_sale.utils");
    require("website_sale.website_sale");

    /**
     * This module extends the website_sale module to support decimal quantity input for adding products to the cart.
     * It overrides the onClickAddCartJSON function from sale.VariantMixin to add support for decimal quantity input,
     * and extends the WebsiteSale widget to handle updating cart quantities when a decimal quantity is entered.
     */

    publicWidget.registry.WebsiteSale.include({
        _changeCartQuantity: function ($input, value, $dom_optional, line_id, productIDs) {
            _.each($dom_optional, function (elem) {
                $(elem).find(".js_quantity").text(value);
                productIDs.push($(elem).find("span[data-product-id]").data("product-id"));
            });
            $input.data("update_change", true);

            this._rpc({
                route: "/shop/cart/update_json",
                params: {
                    line_id: line_id,
                    product_id: parseInt($input.data("product-id"), 10),
                    set_qty: value,
                },
            }).then(function (data) {
                $input.data("update_change", false);
                var check_value = parseFloat($input.val());

                if (isNaN(check_value)) {
                    check_value = 1;
                }
                if (value !== check_value) {
                    $input.trigger("change");
                    return;
                }
                if (!data.cart_quantity) {
                    return (window.location = "/shop/cart");
                }
                wSaleUtils.updateCartNavBar(data);
                $input.val(data.quantity);

                $(".js_quantity[data-line-id=" + line_id + "]")
                    .val(data.quantity)
                    .text(data.quantity);

                if (data.warning) {
                    var cart_alert = $(".oe_cart").parent().find("#data_warning");
                    if (cart_alert.length === 0) {
                        $(".oe_cart").prepend(
                            '<div class="alert alert-danger alert-dismissable" role="alert" id="data_warning">' +
                                '<button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button> ' +
                                data.warning +
                                "</div>"
                        );
                    } else {
                        cart_alert.html(
                            '<button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button> ' +
                                data.warning
                        );
                    }
                    $input.val(data.quantity);
                }
            });
        },

        _onChangeCartQuantity: function (ev) {
            var $input = $(ev.currentTarget);
            if ($input.data("update_change")) {
                return;
            }
            var value = parseFloat($input.val() || 0, 10);
            if (isNaN(value)) {
                value = 1;
            }
            var $dom = $input.closest("tr");
            var $dom_optional = $dom.nextUntil(":not(.optional_product.info)");
            var line_id = parseInt($input.data("line-id"), 10);
            var productIDs = [parseInt($input.data("product-id"), 10)];
            this._changeCartQuantity($input, value, $dom_optional, line_id, productIDs);
        },
    });
});