//replace with gn search hints


   
    

        function autocomplete(inp, arr) {
            /*the autocomplete function takes two arguments,
            the text field element and an array of possible autocompleted values:*/
            var currentFocus;
            /*execute a function when someone writes in the text field:*/

            inp.addEventListener("focus", function(e) {


                var a, b, i, val = this.value;
                closeAllLists();
                currentFocus = -1;
                a = document.createElement("DIV");
                a.setAttribute("id", this.id + "autocomplete-list");
                a.setAttribute("class", "autocomplete-items");
                this.parentNode.appendChild(a);
                let historySearch = retrieveSearchHistory().splice(0, 5)
                let text_title = document.createElement("DIV")
                text_title.innerHTML = "<strong>RECENT SEARCH</strong><input id='clear_all'  type='button' value='clear_all'>";
                text_title.setAttribute("class", "recent-search-title")
                text_title.setAttribute('disabled', true);

                a.appendChild(text_title);
                for (i = 0; i < historySearch.length; i++) {
                    b = document.createElement("DIV");
                    b.innerHTML = "<span>" + historySearch[i].substr(0, val.length) + "</span>";
                    b.style.color = "blue";
                    b.innerHTML += historySearch[i].substr(val.length);
                    b.innerHTML += "<input type='hidden' value='" + historySearch[i] + "'>";
                    b.addEventListener("click", function(e) {
                        inp.value = this.getElementsByTagName("input")[0].value;
                        closeAllLists();
                    });
                    a.appendChild(b);

                }
                    document.getElementById("clear_all").addEventListener("click",(event)=>{
                        

                        deleteSearchHistory()
                    })
  
            });



            inp.addEventListener("input", function(e) {
                var a, b, i, val = this.value;
                /*close any already open lists of autocompleted values*/
                closeAllLists();
                if (!val) { return false; }
                currentFocus = -1;
                /*create a DIV element that will contain the items (values):*/
                a = document.createElement("DIV");
                a.setAttribute("id", this.id + "autocomplete-list");
                a.setAttribute("class", "autocomplete-items");
                /*append the DIV element as a child of the autocomplete container:*/
                this.parentNode.appendChild(a);
                /*for each item in the array...*/
                for (i = 0; i < arr.length; i++) {
                    /*check if the item starts with the same letters as the text field value:*/
                    if (arr[i].substr(0, val.length).toUpperCase() == val.toUpperCase()) {
                        /*create a DIV element for each matching element:*/
                        b = document.createElement("DIV");
                        /*make the matching letters bold:*/
                        b.innerHTML = "<strong>" + arr[i].substr(0, val.length) + "</strong>";
                        b.innerHTML += arr[i].substr(val.length);
                        /*insert a input field that will hold the current array item's value:*/
                        b.innerHTML += "<input type='hidden' value='" + arr[i] + "'>";
                        /*execute a function when someone clicks on the item value (DIV element):*/
                        b.addEventListener("click", function(e) {
                            /*insert the value for the autocomplete text field:*/
                            inp.value = this.getElementsByTagName("input")[0].value;
                            /*close the list of autocompleted values,
                            (or any other open lists of autocompleted values:*/
                            closeAllLists();
                        });
                        a.appendChild(b);
                    }
                }
            });
            /*execute a function presses a key on the keyboard:*/
            inp.addEventListener("keydown", function(e) {
                var x = document.getElementById(this.id + "autocomplete-list");
                if (x) x = x.getElementsByTagName("div");
                if (e.keyCode == 40) {
                    /*If the arrow DOWN key is pressed,
                    increase the currentFocus variable:*/
                    currentFocus++;
                    /*and and make the current item more visible:*/
                    addActive(x);
                } else if (e.keyCode == 38) { //up
                    /*If the arrow UP key is pressed,
                    decrease the currentFocus variable:*/
                    currentFocus--;
                    /*and and make the current item more visible:*/
                    addActive(x);
                } else if (e.keyCode == 13) {
                    /*If the ENTER key is pressed, prevent the form from being submitted,*/
                    e.preventDefault();
                    if (currentFocus > -1) {
                        /*and simulate a click on the "active" item:*/
                        if (x) x[currentFocus].click();
                    }
                }
            });

            function addActive(x) {
                /*a function to classify an item as "active":*/
                if (!x) return false;
                /*start by removing the "active" class on all items:*/
                removeActive(x);
                if (currentFocus >= x.length) currentFocus = 0;
                if (currentFocus < 0) currentFocus = (x.length - 1);
                /*add class "autocomplete-active":*/
                x[currentFocus].classList.add("autocomplete-active");
            }

            function removeActive(x) {
                /*a function to remove the "active" class from all autocomplete items:*/
                for (var i = 0; i < x.length; i++) {
                    x[i].classList.remove("autocomplete-active");
                }
            }

            function closeAllLists(elmnt) {
                /*close all autocomplete lists in the document,
                except the one passed as an argument:*/
                var x = document.getElementsByClassName("autocomplete-items");
                for (var i = 0; i < x.length; i++) {
                    if (elmnt != x[i] && elmnt != inp) {
                        x[i].parentNode.removeChild(x[i]);
                    }
                }
            }



            /*execute a function when someone clicks in the document:*/
            document.addEventListener("click", function(e) {
                closeAllLists(e.target);
            })

        }

        function retrieveSearchHistory() {
            let results = localStorage.getItem("gn_search_history")

            return results ? JSON.parse(results) : []
        }





        function saveBeforeSubmit(new_search) {

            let search = retrieveSearchHistory()
            search.unshift(new_search)

            localStorage.setItem("gn_search_history", JSON.stringify([...new Set(search)].splice(0,8)))

        }

        function deleteSearchHistory(){
            localStorage.setItem("gn_search_history", [])
        }