// ******************************************************************
// DATA WRAPPERS -- FOR INITIAL CHECKS
// ******************************************************************
// Find data wrappers -- ideally with syntax so that there will not be a console error thrown on non-product pages [ie. no multiple query selectors / finds].
var approve_product_wrapper = document.querySelector('.single_product__info');
var approve_price_wrapper = document.querySelector("#single_product__price-template-product");
var approve_model_wrapper = document.querySelector('.single_product__title');
var approve_qty_ele = document.querySelector('.quantity_input');


// ******************************************************************
// DEBUG MODE -- Set to true if you want console logs to show.
// ******************************************************************
var approve_debug_mode = false;

// ******************************************************************
// Handles both the creation and update of the approve button.
// ******************************************************************
function init_approve_button(){
    if (!approve_price_wrapper || !approve_model_wrapper){
        if (approve_debug_mode){
            if (!approve_price_wrapper){
               console.log("The approve price wrapper is missing from the page.");
            }
            if (!approve_model_wrapper){
               console.log("The approve model wrapper is missing from the page.");
            }
        }
        return;
    }

    // Find price & clean
    // var approve_price_wrapper2 = approve_price_wrapper.querySelector(".money");
    // if (!approve_price_wrapper2){
    //     if (approve_debug_mode){
    //         console.log("The approve price wrapper2 is missing from the page.");
    //     }
    // }
    var approve_price = approve_price_wrapper.innerHTML;
    if (!approve_price){
        if (approve_debug_mode){
            console.log("No price found.");
        }
        return;
    }
    approve_price = approve_price.replace(/[^0-9-.]/g, '');
    approve_price = parseInt(approve_price);

    // Find model. Clean if necessary.
	var approve_model = approve_model_wrapper.textContent;
    if (!approve_model){
        if (approve_debug_mode){
            console.log("No model found.");
        }
        return;
    }

    // If qty wrapper exists, find qty. Otherwise, qty is set to 1.
    if (approve_qty_ele){
        var approve_qty = approve_qty_ele.value;
    } else {
        if (approve_debug_mode){
            console.log("No qty element found.");
        }
        var approve_qty = 1;
    }

    // ******************************************************************
    // FIND SELECT OPTIONS
    // ******************************************************************

    // approve_selected_options is options that are SELECTED. Here we will add their label to the model name.
    // var approve_selected_options = document.querySelectorAll("input[type='radio']:checked");
    // approve_selected_options.forEach(function (item, index) {
    //     var approve_option_name = item.getAttribute("aria-label");
    //     approve_model = approve_model + " / " + approve_option_name;
    // });

    // // If a change listener is needed for options, it is initliazed here.
    // var approve_options = document.querySelectorAll("input[type='radio']");
    // approve_options.forEach(function (item, index) {
    //     item.addEventListener('change',event => {
    //         init_approve_button();
    //     })
    // });

    if(isNaN(approve_price) || !approve_model || !approve_qty){
        if (approve_debug_mode){
            console.log(approve_price);
            console.log(approve_model);
            console.log(approve_qty);
            console.log("Something went wrong in the configuration of button variables");
        }
        return;
    }

    // Find the element where we want to insert our button.
    var approve_insert_after_ele = document.querySelector('.details_row-button');
    if(!approve_insert_after_ele){
        if (approve_debug_mode){
            console.log("Element to insert approve button after not found.");
        }
        return;
    }

    // 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){
        var approve_button = document.createElement('approve-button');
        approve_button.id = "approve_button_id";
        approve_button.style.display="inline-block";
        approve_button.style.marginTop="30px";
        approve_button.style.textAlign="center";
        approve_button.style.marginBottom="30px";
        approve_button.setAttribute('application-type',"embedded_app");
        approve_insert_after_ele.after(approve_button);
    }

    // If price is below $200, teaser rate breaks. Let's ensure that it's above $200.
    if ((parseFloat(approve_price) * parseInt(approve_qty)) < 200){
        if (approve_debug_mode){
            console.log("Price is below $200.");
        }
        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)
    }
}

if (approve_product_wrapper){

    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 => {
            var approve_qty = parseInt(approve_qty_ele.value);
            approve_update_qty_timer();
        })

        // buttons that raise or lower the quantity.
        var approve_qty_btn_inc = document.querySelector('.quantity_up');
        var approve_qty_btn_dec = document.querySelector('.quantity_down');

        // 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_qty = parseInt(approve_qty_ele.value);
                approve_update_qty_timer();
            });

            approve_qty_btn_dec.addEventListener('click',event => {
                var approve_qty = parseInt(approve_qty_ele.value);
                approve_update_qty_timer();
            });
    
        } else {
            if (approve_debug_mode){
                console.log("No qty buttons found.");
            }
        }

        // Add mutation watcher to qty input
        // if (approve_debug_mode){
        //     console.log("Qty element found. Adding mutation observer");
        // }
        // const approve_qty_observer = new MutationObserver(function() {
        //     if (approve_debug_mode){
        //         console.log("Watcher called");
        //     }
        //     init_approve_button();
        // });
        // approve_qty_observer.observe(approve_qty_ele,{subtree: true, childList: true});


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

    if (approve_price_wrapper){
        // Add observer to price element
        const approve_price_observer = new MutationObserver(function() {
            init_approve_button();
        });
        approve_price_observer.observe(approve_price_wrapper,{subtree: false, childList: true});
    }
} else {
    if (!approve_product_wrapper){
        console.log("No approve_product_wrapper found");
    }
}