fix: rename appointment booking route (#19886)

* rename appoinment booking route

* fix: replace all references to book-appointment route
diff --git a/erpnext/www/book_appointment/index.js b/erpnext/www/book_appointment/index.js
new file mode 100644
index 0000000..c8dd501
--- /dev/null
+++ b/erpnext/www/book_appointment/index.js
@@ -0,0 +1,236 @@
+frappe.ready(async () => {
+    initialise_select_date();
+})
+
+window.holiday_list = [];
+
+async function initialise_select_date() {
+    navigate_to_page(1);
+    await get_global_variables();
+    setup_date_picker();
+    setup_timezone_selector();
+    hide_next_button();
+}
+
+async function get_global_variables() {
+    // Using await through this file instead of then.
+    window.appointment_settings = (await frappe.call({
+        method: 'erpnext.www.book_appointment.index.get_appointment_settings'
+    })).message;
+    window.timezones = (await frappe.call({
+        method:'erpnext.www.book_appointment.index.get_timezones'
+    })).message;
+    window.holiday_list = window.appointment_settings.holiday_list;
+}
+
+function setup_timezone_selector() {
+    /**
+     * window.timezones is a dictionary with the following structure
+     * { IANA name: Pretty name}
+     * For example : { Asia/Kolkata : "India Time - Asia/Kolkata"}
+     */
+    let timezones_element = document.getElementById('appointment-timezone');
+    let offset = new Date().getTimezoneOffset();
+    Object.keys(window.timezones).forEach((timezone) => {
+        let opt = document.createElement('option');
+        opt.value = timezone;
+        if (timezone == moment.tz.guess()) {
+            opt.selected = true;
+        }
+        opt.innerHTML = window.timezones[timezone]
+        timezones_element.appendChild(opt)
+    });
+}
+
+function setup_date_picker() {
+    let date_picker = document.getElementById('appointment-date');
+    let today = new Date();
+    date_picker.min = today.toISOString().substr(0, 10);
+    today.setDate(today.getDate() + window.appointment_settings.advance_booking_days);
+    date_picker.max = today.toISOString().substr(0, 10);
+}
+
+function hide_next_button() {
+    let next_button = document.getElementById('next-button');
+    next_button.disabled = true;
+    next_button.onclick = () => frappe.msgprint("Please select a date and time");
+}
+
+function show_next_button() {
+    let next_button = document.getElementById('next-button');
+    next_button.disabled = false;
+    next_button.onclick = setup_details_page;
+}
+
+function on_date_or_timezone_select() {
+    let date_picker = document.getElementById('appointment-date');
+    let timezone = document.getElementById('appointment-timezone');
+    if (date_picker.value === '') {
+        clear_time_slots();
+        hide_next_button();
+        frappe.throw('Please select a date');
+    }
+    window.selected_date = date_picker.value;
+    window.selected_timezone = timezone.value;
+    update_time_slots(date_picker.value, timezone.value);
+    let lead_text = document.getElementById('lead-text');
+    lead_text.innerHTML = "Select Time"
+}
+
+async function get_time_slots(date, timezone) {
+    let slots = (await frappe.call({
+        method: 'erpnext.www.book_appointment.index.get_appointment_slots',
+        args: {
+            date: date,
+            timezone: timezone
+        }
+    })).message;
+    return slots;
+}
+
+async function update_time_slots(selected_date, selected_timezone) {
+    let timeslot_container = document.getElementById('timeslot-container');
+    window.slots = await get_time_slots(selected_date, selected_timezone);
+    clear_time_slots();
+    if (window.slots.length <= 0) {
+        let message_div = document.createElement('p');
+        message_div.innerHTML = "There are no slots available on this date";
+        timeslot_container.appendChild(message_div);
+        return
+    }
+    window.slots.forEach((slot, index) => {
+        // Get and append timeslot div
+        let timeslot_div = get_timeslot_div_layout(slot)
+        timeslot_container.appendChild(timeslot_div);
+    });
+    set_default_timeslot();
+}
+
+function get_timeslot_div_layout(timeslot) {
+    let start_time = new Date(timeslot.time)
+    let timeslot_div = document.createElement('div');
+    timeslot_div.classList.add('time-slot');
+    if (!timeslot.availability) {
+        timeslot_div.classList.add('unavailable')
+    }
+    timeslot_div.innerHTML = get_slot_layout(start_time);
+    timeslot_div.id = timeslot.time.substr(11, 20);
+    timeslot_div.addEventListener('click', select_time);
+    return timeslot_div
+}
+
+function clear_time_slots() {
+    // Clear any existing divs in timeslot container
+    let timeslot_container = document.getElementById('timeslot-container');
+    while (timeslot_container.firstChild) {
+        timeslot_container.removeChild(timeslot_container.firstChild);
+    }
+}
+
+function get_slot_layout(time) {
+    let timezone = document.getElementById("appointment-timezone").value;
+    time = new Date(time);
+    let start_time_string = moment(time).tz(timezone).format("LT");
+    let end_time = moment(time).tz(timezone).add(window.appointment_settings.appointment_duration, 'minutes');
+    let end_time_string = end_time.format("LT");
+    return `<span style="font-size: 1.2em;">${start_time_string}</span><br><span class="text-muted small">to ${end_time_string}</span>`;
+}
+
+function select_time() {
+    if (this.classList.contains('unavailable')) {
+        return;
+    }
+    let selected_element = document.getElementsByClassName('selected');
+    if (!(selected_element.length > 0)) {
+        this.classList.add('selected');
+        show_next_button();
+        return;
+    }
+    selected_element = selected_element[0]
+    window.selected_time = this.id;
+    selected_element.classList.remove('selected');
+    this.classList.add('selected');
+    show_next_button();
+}
+
+function set_default_timeslot() {
+    let timeslots = document.getElementsByClassName('time-slot')
+    // Can't use a forEach here since, we need to break the loop after a timeslot is selected
+    for (let i = 0; i < timeslots.length; i++) {
+        const timeslot = timeslots[i];
+        if (!timeslot.classList.contains('unavailable')) {
+            timeslot.classList.add('selected');
+            break;
+        }
+    }
+}
+
+function navigate_to_page(page_number) {
+    let page1 = document.getElementById('select-date-time');
+    let page2 = document.getElementById('enter-details');
+    switch (page_number) {
+        case 1:
+            page1.style.display = 'block';
+            page2.style.display = 'none';
+            break;
+        case 2:
+            page1.style.display = 'none';
+            page2.style.display = 'block';
+            break;
+        default:
+            break;
+    }
+}
+
+function setup_details_page() {
+    navigate_to_page(2)
+    let date_container = document.getElementsByClassName('date-span')[0];
+    let time_container = document.getElementsByClassName('time-span')[0];
+    date_container.innerHTML = moment(window.selected_date).format("MMM Do YYYY");
+    time_container.innerHTML = moment(window.selected_time, "HH:mm:ss").format("LT");
+}
+
+async function submit() {
+    let button = document.getElementById('submit-button');
+    button.disabled = true;
+    let form = document.querySelector('#customer-form');
+    if (!form.checkValidity()) {
+        form.reportValidity();
+        button.disabled = false;
+        return;
+    }
+    let contact = get_form_data();
+    let appointment =  frappe.call({
+        method: 'erpnext.www.book_appointment.index.create_appointment',
+        args: {
+            'date': window.selected_date,
+            'time': window.selected_time,
+            'contact': contact,
+            'tz':window.selected_timezone
+        },
+        callback: (response)=>{
+            if (response.message.status == "Unverified") {
+                frappe.show_alert("Please check your email to confirm the appointment")
+            } else {
+                frappe.show_alert("Appointment Created Successfully");
+            }
+            setTimeout(()=>{
+                let redirect_url = "/";
+                if (window.appointment_settings.success_redirect_url){
+                    redirect_url += window.appointment_settings.success_redirect_url;
+                }
+                window.location.href = redirect_url;},5000)
+        },
+        error: (err)=>{
+            frappe.show_alert("Something went wrong please try again");
+            button.disabled = false;
+        }
+    });
+}
+
+function get_form_data() {
+    contact = {};
+    let inputs = ['name', 'skype', 'number', 'notes', 'email'];
+    inputs.forEach((id) => contact[id] = document.getElementById(`customer_${id}`).value)
+    return contact
+}