// DEBUG MODE -- Set to true if you want console logs to show.
var approve_debug_mode = true;
approve_debug_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 = '#shopify-section-product-template .section-product-template .container-wrapper';

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 = approve_product_wrapper_ele+' .product-info-row .product-title h1 ';
    var approve_price_ele_name = approve_product_wrapper_ele+' .product-info-row .product-price > .price-sale ';
    if (!document.querySelector(approve_price_ele_name)) {
        approve_price_ele_name = approve_product_wrapper_ele+' .product-info-row .product-price > .price:nth-of-type(1) ';
    }

    // 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 = approve_product_wrapper_ele+' .product-info-row .product-price ';

    var approve_qty_ele_name = approve_product_wrapper_ele+' .product-cart-qty .qty-wrapper .qty-select input[name="quantity"]';
    // 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 = approve_product_wrapper_ele+' .product-cart-qty .qty-wrapper .qty-select a.qty-plus';
    var approve_dec_quantity_ele = approve_product_wrapper_ele+' .product-cart-qty .qty-wrapper .qty-select a.qty-minus';


    // OPTIONS -- All of the following is optional. Options are be fairly custom
        // Wrapper for the ENTIRE options section
    var approve_options_wrapper_ele_name = '';
        // 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 = '';

    // 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){
        approve_debug_log("APPROVE: No initial approve_model_ele found.",1);
    }

    // price
    var approve_price_ele  = document.querySelector(approve_price_ele_name);
    if (!approve_price_ele){
        approve_debug_log("APPROVE: No initial approve_price_ele found.",1);
    }

    // qty
    if (approve_qty_ele_name){
        var approve_qty_ele  = document.querySelector(approve_qty_ele_name);
        if (!approve_qty_ele){
            approve_debug_log("APPROVE: No initial approve_qty_ele found.",1);
        }
    }

    // element to insert after
    var approve_insert_after_ele = document.querySelector(approve_insert_after_ele_name);
    if (!approve_insert_after_ele){
        approve_debug_log("APPROVE: No initial approve_insert_after_ele found.",1);
    }

    // ******************************************************************
    //           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){
            approve_debug_log("APPROVE: No dynamic approve_model_ele found.",0,1);
            return;
        }
        var approve_model = approve_model_ele.textContent


        // price
        var approve_price_ele  = document.querySelector(approve_price_ele_name);
        if (!approve_price_ele){
            approve_debug_log("APPROVE: No dynamic approve_price_ele found.",0,1);
            return;
        }
        var approve_price = approve_price_ele.innerHTML.replace(/[^0-9.]/g, '');
        approve_price = parseFloat(approve_price);
        if (!approve_price || approve_price == 0){
            approve_debug_log("APPROVE: Price not found (or is 0) after removing non-numerical characters.",1);
        }


        // qty
        if (approve_qty_ele_name){
            var approve_qty_ele  = document.querySelector(approve_qty_ele_name);
        }
        var approve_qty = 1;
        if (!approve_qty_ele){
            approve_debug_log("APPROVE: No dynamic approve_qty_ele found.",1);
        } else {
            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){
            approve_debug_log("APPROVE: No dynamic approve_insert_after_ele found.",0,1);
            return;
        }
        // ******************************************************************
        //           END DYNAMIC PRODUCT PAGE ELEMENT SELECTION
        // ******************************************************************


        // ******************************************************************
        //                   FIND SELECT OPTIONS
        // ******************************************************************
        var approve_options_wrapper_ele = null;
        if (approve_options_wrapper_ele_name){
            // Get options wrapper
            approve_options_wrapper_ele = document.querySelector(approve_options_wrapper_ele_name);
            if (!approve_options_wrapper_ele){
                approve_debug_log("No approve_options_wrapper_ele found.");
            } else { // TRH - added else to prevent js error when options dont exist
                var approve_selected_options = approve_options_wrapper_ele.querySelectorAll(approve_select_ele_name);
                if (!approve_selected_options){
                    approve_debug_log("No approve_selected_options found.");
                }
                approve_selected_options.forEach(function (item, index) {
                    // CONFIGURE OPTIONS HERE
                });
            }
        }
        // ******************************************************************
        //                      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){
                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 $1500.
        if ((parseFloat(approve_price) * parseInt(approve_qty)) < 1500){
            approve_debug_log("Price is below $1500.");
            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){
            activate_increase_and_decrease_buttons();
        }
    }

    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});
        }
    }
}
else {
    approve_debug_log("APPROVE: approve_product_wrapper not found.",1)
}

/**
 *
 * Activates quantity buttons.
 * QTY buttons are, sometimes added to the page after a page has been rendered. This will wait for that to happen.
 */
function activate_increase_and_decrease_buttons(number_of_tries=0){
    number_of_tries++;
    // 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);
    if ((!approve_qty_btn_inc || !approve_qty_btn_dec) && number_of_tries < 10){
    setTimeout(()=>(activate_increase_and_decrease_buttons(number_of_tries)),500);
        return
    }

    // 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 {
        approve_debug_log("APPROVE: No approve_qty_btn_inc or approve_qty_btn_dec found.",1);
    }
}

// ******************************************************************
// ******************************************************************
//                          END PRODUCT PAGE
// ******************************************************************
// ******************************************************************




// IF YOU WANT TO USE A LOG WITH COLORS YOU CAN USE
function approve_debug_log(log, warn, err) {
    warn = warn || false;
    err = err || false;
    let css = "padding: 5px 20px; ";
    if (err) {
        css += "background:#8B0000; color:#fff; ";
    } else if(warn) {
        css += "background:#FFBF00; color:#000; ";
    } else {
        css += "background:#418AC9; color:#fff; ";
    }
    if (approve_debug_mode) console.log("%c"+log,css);
}