// DEBUG MODE -- Set to true if you want console logs to show.
var approve_debug_mode = false;
if (approve_debug_mode) {
    console.log("APPROVE SCRIPT LOADED");
}
// ******************************************************************
// ******************************************************************
//                          PRODUCT PAGE
// ******************************************************************
// ******************************************************************


// In the easiest implementation, you will be able to set every variable you need right here.
// GENERAL PRODUCT WRAPPER -- element to look for to know we are on a product page
var approve_product_wrapper_ele = '#maintitlerow';

var approve_product_wrapper = document.querySelector(approve_product_wrapper_ele);

// Must ensure we are on a product page before attempting to select the remaining elements.
if (approve_product_wrapper){

    // ******************************************************************
    //              PRODUCT PAGE Variable Configuration
    // ******************************************************************
    // PRODUCT INFO ELEMENTS -- These strings will be used in document.querySelector(). Ensure that there is only one of each on the page.
    var approve_model_ele_name = 'h1.product_title';
    var approve_price_ele_name_default = '.price > .woocommerce-Price-amount > bdi';
    var approve_price_ele_name_extras = '.product-addon-totals > ul > .wc-pao-subtotal-line > .price > .amount';
    var approve_qty_ele_name = '.input-text.qty';

    // ELEMENT TO INSERT THE BUTTON BELOW -- This strings will be used in document.querySelector(). Ensure that there is only one on the page.
    var approve_insert_after_ele_name = '.cart';

    // QTY INCREASE / DECREASE BUTTONS -- These buttons do not always trigger a change event on the QTY element. We will add click watchers on these elements. [Optional]
    var approve_inc_quantity_ele = '';
    var approve_dec_quantity_ele = '';


    // OPTIONS -- All of the following is optional. Options are be fairly custom
    // Wrapper for the ENTIRE options section
    var approve_options_wrapper_ele_name = '.wc-pao-addon-container';
    // Elements that need to have *change* watchers. Mostly used on select elements. Will be used in a foreach, so picking a class with multiple selects is both allowed and encouraged. Ensure these elements are contained within the wrapper above.
    var approve_select_ele_name = '.wc-pao-addon-field';

    // APPROVE BUTTON STYLING
    var approve_button_display_style = 'inline-block';

    // '50px' -- All sides will have margin of 50PX
    // '50px 10px' -- top/bottom will be 50px, right/left 10px
    // '50px 10px 20px 30px' -- top / right / bottom / left
    var approve_button_display_margin = '10px 0px';

    var approve_button_to_remove_ele = "";

    // ******************************************************************
    //              END PRODUCT PAGE Variable Configuration
    // ******************************************************************




    // ******************************************************************
    //   INITIAL PRODUCT PAGE ELEMENT SELECTION -- No Action Required
    // ******************************************************************

    // Grabbing variables based on the variable configuration.
    // IMPORTANT -- this selection has to be made both INSIDE and OUTSIDE of init_approve_button.
    // This is because we need to first identify the elements for the use of watchers -- but also need them to be dynamic.

    // model
    var approve_model_ele  = document.querySelector(approve_model_ele_name);
    if (!approve_model_ele){
        if (approve_debug_mode){
            console.warn("APPROVE: No initial approve_model_ele found.");
        }
    }

    // priceapprove_price_ele_name
    var approve_price_ele  = document.querySelector(approve_price_ele_name_extras);
    if (!approve_price_ele) {
        var approve_price_ele = document.querySelector(approve_price_ele_name_default);
        if (!approve_price_ele) {
            if (approve_debug_mode) {
                console.warn("APPROVE: No initial approve_price_ele found.");
            }
        }
    }

    // qty
    if (approve_qty_ele_name){
        var approve_qty_ele  = document.querySelector(approve_qty_ele_name);
        if (!approve_qty_ele){
            if (approve_debug_mode){
                console.warn("APPROVE: No initial approve_qty_ele found.");
            }
        }
    }

    // element to insert after
    var approve_insert_after_ele = document.querySelector(approve_insert_after_ele_name);
    if (!approve_insert_after_ele){
        if (approve_debug_mode){
            console.warn("APPROVE: No initial approve_insert_after_ele found.");
        }
    }

    // ******************************************************************
    //           END INITIAL PRODUCT PAGE ELEMENT SELECTION
    // ******************************************************************



    // ******************************************************************
    //  Initilizes the approve button.
    //  This function handles both the CREATION and UPDATE of button variables
    // ******************************************************************
    function init_approve_button(){

        // ******************************************************************
        //   DYNAMIC PRODUCT PAGE ELEMENT SELECTION -- No Action Required
        // ******************************************************************

        // Grabbing variables based on the variable configuration.
        // IMPORTANT -- this selection has to be made both INSIDE and OUTSIDE of init_approve_button.
        // This is because we need to first identify the elements for the use of watchers -- but also need them to be dynamic.

        // model
        var approve_model_ele  = document.querySelector(approve_model_ele_name);
        if (!approve_model_ele){
            if (approve_debug_mode){
                console.error("APPROVE: No dynamic approve_model_ele found.");
            }
            return;
        }
        var approve_model = approve_model_ele.textContent


        // price
        var approve_price_ele  = document.querySelector(approve_price_ele_name_extras);
        if (!approve_price_ele) {
            var approve_price_ele = document.querySelector(approve_price_ele_name_default);
            if (!approve_price_ele) {
                if (approve_debug_mode) {
                    console.warn("APPROVE: No initial approve_price_ele found.");
                }
                return;
            }
        }
        var approve_price = approve_price_ele.innerHTML.replace(/[^0-9.]/g, '');
        approve_price = parseFloat(approve_price);
        if (!approve_price || approve_price == 0){
            if (approve_debug_mode){
                console.warn("APPROVE: Price not found (or is 0) after removing non-numerical characters.");
            }
        }


        // qty
        if (approve_qty_ele_name){
            var approve_qty_ele  = document.querySelector(approve_qty_ele_name);
        }
        if (!approve_qty_ele){
            if (approve_debug_mode){
                console.warn("APPROVE: No dynamic approve_qty_ele found.");
            }
            var approve_qty = 1;
        } else {
            var approve_qty = approve_qty_ele.value;
        }
        approve_qty = parseInt(approve_qty);


        // element to insert after
        var approve_insert_after_ele = document.querySelector(approve_insert_after_ele_name);
        if (!approve_insert_after_ele){
            if (approve_debug_mode){
                console.error("APPROVE: No dynamic approve_insert_after_ele found.");
            }
            return;
        }
        // ******************************************************************
        //           END DYNAMIC PRODUCT PAGE ELEMENT SELECTION
        // ******************************************************************


        // ******************************************************************
        //                   FIND SELECT OPTIONS
        // ******************************************************************
        if (approve_options_wrapper_ele_name){
            // Get options wrapper
            var approve_options_wrapper_ele = document.querySelector(approve_options_wrapper_ele_name);
            if (!approve_options_wrapper_ele){
                if (approve_debug_mode){
                    console.log("No approve_options_wrapper_ele found.");
                }
            } else {
                var approve_selected_options = approve_options_wrapper_ele.querySelectorAll(approve_select_ele_name);
                if (!approve_selected_options){
                    if (approve_debug_mode){
                        console.log("No approve_selected_options found.");
                    }
                }
                approve_selected_options.forEach(function (item, index) {
                    if (item.checked){
                        var approve_option_text = item.closest('p').querySelector('label').textContent;
                        approve_model = approve_model + " / " + approve_option_text;
                    }
                });
            }
        }
        // ******************************************************************
        //                      END SELECT OPTIONS
        // ******************************************************************


        // ******************************************************************
        //                   ADD APPROVE BUTTON TO PAGE
        // ******************************************************************
        // Check if the button is on the page
        var approve_button = document.getElementById('approve_button_id');
        if (!approve_button){

            // If event listener is needed for options, here is where it can be initiated.
            if (approve_options_wrapper_ele_name){
                var approve_options_wrapper_ele = document.querySelector(approve_options_wrapper_ele_name);
                if (approve_options_wrapper_ele){
                    // If a change listener is needed for options, it is initliazed here.
                    var approve_options1 = approve_options_wrapper_ele.querySelectorAll(approve_select_ele_name);
                    approve_options1.forEach(function (item, index) {
                        item.addEventListener('change',event => {
                            init_approve_button();
                        })
                    });
                }
            }

            // Insert Button
            var approve_button = document.createElement('approve-button');
            approve_button.id = "approve_button_id";

            if (approve_button_display_style){
                approve_button.style.display = approve_button_display_style;
            }
            if (approve_button_display_margin){
                approve_button.style.margin = approve_button_display_margin;
            }
            approve_button.setAttribute('application-type',"embedded_app");
            var approve_btn_wrapper = document.createElement("div");
            approve_btn_wrapper.appendChild(approve_button);
            approve_insert_after_ele.after(approve_btn_wrapper);
        }

        // Removing a button
        if (approve_button_to_remove_ele){
            var approve_button_to_remove = document.querySelector(approve_button_to_remove_ele);
            if (approve_button_to_remove){
                approve_button_to_remove.style.display = "none";
            }
        }


        // If price is below $200, teaser rate breaks. Let's ensure that it's above $500.
        if ((parseFloat(approve_price) * parseInt(approve_qty)) < 500){
            if (approve_debug_mode){
                console.log("Price is below $500.");
            }
            approve_button.style.display = "none";
            return;
        }

        // Set approve button variables.
        approve_button.setAttribute('price',approve_price);
        approve_button.setAttribute('model',approve_model);
        approve_button.setAttribute('qty',approve_qty);
        approve_button.setAttribute('type',"new_product");

    }

    // ******************************************************************
    // Simple set button qty. Must pass the new QTY to the button.
    // ******************************************************************
    function approve_update_qty(approve_qty){
        var approve_button = document.getElementById('approve_button_id');
        if (approve_button){
            var approve_btn_qty = parseInt(approve_button.getAttribute('qty'));
            if (approve_qty != approve_btn_qty){
                approve_button.setAttribute('qty',approve_qty);
            }
        }
    }

    // ******************************************************************
    // If timing is an issue, this function creates an interval for setting button qty.
    // ******************************************************************
    var approve_timer = null;
    function approve_update_qty_timer(){
        var approve_button = document.getElementById('approve_button_id');
        if (approve_button){
            if(approve_timer) {
                clearInterval(approve_timer);
                approve_timer = null;
            }
            var approve_btn_qty = parseInt(approve_button.getAttribute('qty'));
            var number_of_checks = 0;
            approve_timer = setInterval(function(){
                if(number_of_checks>=5){
                    clearInterval(approve_timer);
                    approve_timer = null;
                }
                if(approve_btn_qty != parseInt(approve_qty_ele.value)){
                    approve_button.setAttribute('qty',parseInt(approve_qty_ele.value));
                    clearInterval(approve_timer);
                    approve_timer = null;
                }
                number_of_checks++;
            },500)
        }
    }

    init_approve_button();

    // If there is a qty element, we need to set watchers/listeners.
    if (approve_qty_ele){
        // Add change watcher to qty input
        approve_qty_ele.addEventListener('change',event => {
            approve_update_qty_timer();
        })

        if (approve_inc_quantity_ele && approve_dec_quantity_ele){
            // buttons that raise or lower the quantity.
            var approve_qty_btn_inc = document.querySelector(approve_inc_quantity_ele);
            var approve_qty_btn_dec = document.querySelector(approve_dec_quantity_ele);

            // Assign click events to these buttons so that qty is updated on click.
            if (approve_qty_btn_inc && approve_qty_btn_dec){
                approve_qty_btn_inc.addEventListener('click',event => {
                    var approve_button = document.getElementById('approve_button_id');
                    if (approve_button){
                        var approve_btn_qty = parseInt(approve_button.getAttribute('qty'));
                        approve_btn_qty = approve_btn_qty + 1;
                        approve_update_qty(approve_btn_qty);
                    }
                });

                approve_qty_btn_dec.addEventListener('click',event => {
                    var approve_button = document.getElementById('approve_button_id');
                    if (approve_button){
                        var approve_btn_qty = parseInt(approve_button.getAttribute('qty'));
                        if (approve_btn_qty > 1){
                            approve_btn_qty = approve_btn_qty - 1;
                            approve_update_qty(approve_btn_qty);
                        }
                    }
                });

            } else {
                if (approve_debug_mode){
                    console.warn("APPROVE: No approve_qty_btn_inc or approve_qty_btn_dec found.");
                }
            }
        }
    }

    if (approve_price_ele){
        var approve_price_watcher = approve_price_ele;
        // Add observer to price element
        const approve_price_observer = new MutationObserver(function() {
            init_approve_button();
        });
        approve_price_observer.observe(approve_price_watcher,{subtree: true, childList: true});

        var approve_model_watcher = approve_model_ele;
        if (approve_model_watcher){
            // Add observer to price element
            const approve_model_observer = new MutationObserver(function() {
                init_approve_button();
            });
            approve_model_observer.observe(approve_model_watcher,{subtree: false, childList: true});
        }
    }

    // Mutation observer for the variant price element
    var approve_variant_price = document.querySelector(".wc-pao-addons-container");
    var approve_variant_price_holder = null;
    if (approve_variant_price){
        var observer = new MutationObserver(function(mutationsList, observer) {
            var priceCheckEle  = document.querySelector(approve_price_ele_name_extras);
            if (!priceCheckEle) {
                var priceCheckEle = document.querySelector(approve_price_ele_name_default);
            }
            if (priceCheckEle) {
                let priceCheck = priceCheckEle.innerHTML.replace(/[^0-9.]/g, '');
                priceCheck = parseFloat(priceCheck);
                if (priceCheck != approve_variant_price_holder) {
                    approve_variant_price_holder = priceCheck;
                    init_approve_button();
                }
            }
        });
        observer.observe(approve_variant_price, { attributes: true, childList: true, subtree: true});
    }
} else {
    if (approve_debug_mode){
        console.warn("APPROVE: approve_product_wrapper not found.")
    }
}

// ******************************************************************
// ******************************************************************
//                          CART PAGE
// ******************************************************************
// ******************************************************************

// ******************************************************************
//              CART PAGE Variable Configuration
// ******************************************************************

// Element to know we are on the cart page -- ideally a wrapper
var approve_cart_wrapper_ele = '.woocommerce-cart-form';
var approve_ele_watcher = '.cart-collaterals';

// Element for each line item
var approve_cart_item_ele = '.woocommerce-cart-form__cart-item';

// Total cart price (optional -- watcher for updating the cart)
var approve_cart_total_price_ele = '.order-total > [data-title="Total"] > strong > .woocommerce-Price-amount > bdi';

// Item variables
var approve_cart_item_model_ele = '.product-name';
var approve_cart_item_price_ele = '.product-price > .woocommerce-Price-amount > bdi';
var approve_cart_item_qty_ele = '.quantity > input';

// Insert approve button after this element
var approve_cart_insert_btn_after_ele = '.cart_totals';

// Element for TAX on cart (optional)
var approve_cart_tax_price_ele = '.tax-total > [data-title="Tax"] > .woocommerce-Price-amount > bdi';

// Element for SHIPPING on cart (optional)
var approve_cart_shipping_price_ele = 'input.shipping_method[checked="checked"]';

// ******************************************************************
//              END CART PAGE Variable Configuration
// ******************************************************************


// ******************************************************************
//        CART PAGE ELEMENT SELECTION -- No Action Required
// ******************************************************************
// Find data wrappers -- ideally with syntax so that there will not be a console error thrown on non-cart pages [ie. no multiple query selectors / finds].
if (approve_cart_wrapper_ele){
    var approve_cart_wrapper = document.querySelector(approve_cart_wrapper_ele);
    var approve_cart_item = document.querySelectorAll(approve_cart_item_ele);
}


function approve_initialize_cart(){
    if (!approve_cart_item){
        if (approve_debug_mode){
            console.log("no cart items found.")
        }
        return;
    }

    var approve_cart_items_array = [];

    approve_cart_item.forEach(function (item, index) { 
        var approve_cart_item = {};

        // Find model, price, and qty for each cart item.
        var approve_cart_item_model_wrapper = item.querySelector(approve_cart_item_model_ele);
        var approve_cart_item_qty_wrapper = item.querySelector(approve_cart_item_qty_ele);
        var approve_cart_item_price_wrapper = item.querySelector(approve_cart_item_price_ele);

        // check model
        if (!approve_cart_item_model_wrapper){
            if (approve_debug_mode){
                console.log("No approve_cart_item_model_wrapper found.");
            }
            return;
        }
        // var approve_cart_item_model_wrapper = approve_cart_item_model_wrapper;
        // set and encode cart item model.
        var approve_cart_item_model = approve_cart_item_model_wrapper.textContent.trim();
        approve_cart_item.model = encodeURIComponent(approve_cart_item_model);

        // check price
        if (!approve_cart_item_price_wrapper){
            if (approve_debug_mode){
                console.log("No approve_cart_item_price_wrapper found.");
            }
            return;
        }
        var approve_price = approve_cart_item_price_wrapper.innerHTML.replace(/[^0-9.]/g, '');
        var approve_cart_price = parseFloat(approve_price);
        // set price
        approve_cart_item.price = approve_cart_price;



        // check qty
        if (!approve_cart_item_qty_wrapper){
            if (approve_debug_mode){
                console.log("No approve_cart_item_qty_wrapper found. Qty is set to 1.");
            }
            var approve_qty = 1;
        } else {
            var approve_qty = approve_cart_item_qty_wrapper.value;
        }
        var approve_cart_qty = parseInt(approve_qty);
        // set qty
        approve_cart_item.qty = parseInt(approve_cart_qty);
        approve_cart_item.type = "new_product";

        approve_cart_items_array.push(approve_cart_item);

    });

    // Check to see if the approve button is already on the page. If it isn't, we will create it now.
    var approve_button = document.getElementById('approve_button_id');
    if (!approve_button){
        // Find the element where we want to insert our button.
        var approve_cart_insert_after_ele = document.querySelector(approve_cart_insert_btn_after_ele);
        if(!approve_cart_insert_after_ele){
            if (approve_debug_mode){
                console.log("Element to insert approve button after not found.");
            }
            return;
        }
        var approve_button_wrapper = document.createElement('span');
        approve_button_wrapper.style.textAlign = "left";
        approve_button_wrapper.style.width = "48%";
        approve_button_wrapper.style.float="right";
        var approve_button = document.createElement('approve-button');
        approve_button.id = "approve_button_id";
        approve_button.style.display="inline-block";
        approve_button.style.textAlign="center";
        approve_button.setAttribute('application-type',"embedded_app");
        approve_button.setAttribute('clear-cart-items',"true");
        approve_button_wrapper.appendChild(approve_button)
        approve_cart_insert_after_ele.after(approve_button_wrapper);
    }

    if (approve_cart_tax_price_ele){
        var approve_tax_price_raw = document.querySelector(approve_cart_tax_price_ele);
        var approve_tax_price = approve_tax_price_raw.textContent.replace(/[^0-9.]/g, '');
        approve_tax_price =  parseFloat(approve_tax_price).toFixed(2);

        if (approve_tax_price && approve_tax_price > 0){
            var approve_cart_shipping_item = {};
            approve_cart_shipping_item.model = "Tax";
            approve_cart_shipping_item.price = approve_tax_price;
            approve_cart_shipping_item.qty = 1;
            approve_cart_shipping_item.type = "new_product";
            approve_cart_items_array.push(approve_cart_shipping_item);
        }
    }

    if (approve_cart_shipping_price_ele){
        var approve_shipping_price_raw = document.querySelector(approve_cart_shipping_price_ele);

        // Get id to find the label
        var approve_idVal = approve_shipping_price_raw.id;
        labels = document.getElementsByTagName('label');
        for( var i = 0; i < labels.length; i++ ) {
            if (labels[i].htmlFor == approve_idVal){
                var approve_shipping_label = labels[i];
            }
        }

        if (approve_shipping_label){
            var approve_shipping_price = approve_shipping_label.textContent.replace(/[^0-9.]/g, '');
            approve_shipping_price =  parseFloat(approve_shipping_price).toFixed(2);
        }

        if (approve_shipping_price && approve_shipping_price > 0){
            var approve_cart_shipping_item = {};
            approve_cart_shipping_item.model = "Shipping";
            approve_cart_shipping_item.price = approve_shipping_price;
            approve_cart_shipping_item.qty = 1;
            approve_cart_shipping_item.type = "new_product";
            approve_cart_items_array.push(approve_cart_shipping_item);
        }
    }
    
    approve_button.setAttribute('items',JSON.stringify(approve_cart_items_array));

}

if (approve_cart_wrapper_ele){
    approve_initialize_cart();

    // for this one we're actually watching the entire wrapper
    var approve_price_watcher = document.querySelector(approve_ele_watcher);
    // Add observer to price element
    const approve_price_observer = new MutationObserver(function() {
        approve_initialize_cart();
    });
    approve_price_observer.observe(approve_price_watcher,{subtree: true, childList: true});

} else {
    if (approve_debug_mode){
        console.log("No approve_cart_wrapper found.");
    }
}


// ******************************************************************
// ******************************************************************
//                          END CART PAGE
// ******************************************************************
// ******************************************************************