Converted to an SPA
diff --git a/erpnext/www/book-appointment/index.py b/erpnext/www/book-appointment/index.py
new file mode 100644
index 0000000..15d5f9a
--- /dev/null
+++ b/erpnext/www/book-appointment/index.py
@@ -0,0 +1,123 @@
+import frappe
+import datetime
+
+@frappe.whitelist(allow_guest=True)
+def get_appointment_settings():
+    settings = frappe.get_doc('Appointment Booking Settings')
+    return settings
+
+@frappe.whitelist(allow_guest=True)
+def get_holiday_list(holiday_list_name):
+    holiday_list = frappe.get_doc('Holiday List',holiday_list_name)
+    return holiday_list
+
+@frappe.whitelist(allow_guest=True)
+def get_timezones():
+    timezones = frappe.get_list('Timezone',fields='*')
+    return timezones
+
+@frappe.whitelist(allow_guest=True)
+def get_appointment_slots(date,timezone):
+    timezone = int(timezone)
+    format_string = '%Y-%m-%d %H:%M:%S'
+    query_start_time = datetime.datetime.strptime(date + ' 00:00:00',format_string)
+    query_end_time = datetime.datetime.strptime(date + ' 23:59:59',format_string)
+    query_start_time = _convert_to_ist(query_start_time,timezone)
+    query_end_time = _convert_to_ist(query_end_time,timezone) 
+    # Database queries
+    settings = frappe.get_doc('Appointment Booking Settings')
+    holiday_list = frappe.get_doc('Holiday List', settings.holiday_list)
+    timeslots = get_available_slots_between(query_start_time, query_end_time, settings)
+    
+    # Filter timeslots based on date
+    converted_timeslots = []
+    for timeslot in timeslots:
+        # Check if holiday
+        if _is_holiday(timeslot.date(),holiday_list):
+            converted_timeslots.append(dict(time=_convert_to_tz(timeslot,timezone),availability=False))
+            continue
+        # Check availability
+        if check_availabilty(timeslot,settings):
+            converted_timeslots.append(dict(time=_convert_to_tz(timeslot,timezone),availability=True))
+        else:
+            converted_timeslots.append(dict(time=_convert_to_tz(timeslot,timezone),availability=False))
+    date_required = datetime.datetime.strptime(date + ' 00:00:00',format_string).date()
+    converted_timeslots = filter_timeslots(date_required,converted_timeslots)
+    return converted_timeslots
+
+def get_available_slots_between(query_start_time, query_end_time, settings):
+    records = _get_records(query_start_time, query_end_time, settings)
+    timeslots = []
+    appointment_duration = datetime.timedelta(
+        minutes=settings.appointment_duration)
+    for record in records:
+        if record.day_of_week == WEEKDAYS[query_start_time.weekday()]:
+            current_time = _deltatime_to_datetime(
+                query_start_time, record.from_time)
+            end_time = _deltatime_to_datetime(
+                query_start_time, record.to_time)
+        else :
+            current_time = _deltatime_to_datetime(
+                query_end_time, record.from_time)
+            end_time = _deltatime_to_datetime(
+                query_end_time, record.to_time)
+        while current_time + appointment_duration <= end_time:
+            timeslots.append(current_time)
+            current_time += appointment_duration
+    return timeslots
+
+@frappe.whitelist(allow_guest=True) 
+def create_appointment(date,time,contact):
+    
+    appointment = frappe.frappe.get_doc('Appointment')
+    appointment.scheduled_time = date
+
+def filter_timeslots(date,timeslots):
+    filtered_timeslots = []
+    for timeslot in timeslots:
+        if(timeslot['time'].date() == date):
+            filtered_timeslots.append(timeslot)
+    return filtered_timeslots
+
+def check_availabilty(timeslot,settings):
+    return frappe.db.count('Appointment',{'scheduled_time':timeslot})<settings.number_of_agents
+
+        
+
+def _is_holiday(date, holiday_list):
+    for holiday in holiday_list.holidays:
+        if holiday.holiday_date == date:
+            return True
+    return False
+
+def _get_records(start_time, end_time, settings):
+    records = []
+    for record in settings.availability_of_slots:
+        if record.day_of_week == WEEKDAYS[start_time.weekday()] or record.day_of_week == WEEKDAYS[end_time.weekday()]:
+            records.append(record)
+    return records
+
+def _deltatime_to_datetime(date, deltatime):
+    time = (datetime.datetime.min + deltatime).time()
+    return datetime.datetime.combine(date.date(), time)
+
+def _datetime_to_deltatime(date_time):
+    midnight = datetime.datetime.combine(date_time.date(),datetime.time.min)
+    return (date_time-midnight)
+
+def _convert_to_ist(datetime_object, timezone):
+    offset = datetime.timedelta(minutes=timezone)
+    datetime_object = datetime_object + offset
+    offset = datetime.timedelta(minutes=-330)
+    datetime_object = datetime_object - offset
+    return datetime_object
+
+def _convert_to_tz(datetime_object, timezone):
+    offset = datetime.timedelta(minutes=timezone)
+    datetime_object = datetime_object - offset
+    offset = datetime.timedelta(minutes=-330)
+    datetime_object = datetime_object + offset
+    return datetime_object
+
+WEEKDAYS = ["Monday", "Tuesday", "Wednesday",
+            "Thursday", "Friday", "Saturday", "Sunday"]
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