// FYI MOST do dnot have prices on the product pages.

// 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
// ******************************************************************
// ******************************************************************

var approve_load_button = false;
var approve_price_element_check = document.querySelector(".container.listing-show .show-info .show-info__price .listing-price-data");
if (approve_price_element_check
    && approve_price_element_check.innerHTML.replace(/[^0-9.]/g, '') >= 500
) {
    // need to check if there is a total > 0.00
    approve_load_button = true;
}
if (approve_load_button) {
    // 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 = '.container.listing-show .show-info';

    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+' .show-info__title.default-listing-title';
        var approve_price_ele_name = approve_product_wrapper_ele+' .show-info__price .listing-price-data';
        var approve_qty_ele_name = '';

        // 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+' .show-info__contact-details .show-info__contact-details__phone';

        // 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 = '';
            // 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 = '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 = '30px 0px 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.");
            }
        }

        // price
        var approve_price_ele  = document.querySelector(approve_price_ele_name);
        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);
            if (!approve_price_ele){
                if (approve_debug_mode){
                    console.error("APPROVE: No dynamic 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.");
                    }
                }

                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) {
                    // 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){
                    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.style.width="100%";
                approve_btn_wrapper.style.textAlign="center";
                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){
                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 {
        if (approve_debug_mode){
            console.warn("APPROVE: approve_product_wrapper not found.")
        }
    }

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

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