brotherton-erpnext/erpnext/erpnext_integrations/exotel_integration.py

import frappe
import requests
from frappe import _

# api/method/erpnext.erpnext_integrations.exotel_integration.handle_incoming_call
# api/method/erpnext.erpnext_integrations.exotel_integration.handle_end_call
# api/method/erpnext.erpnext_integrations.exotel_integration.handle_missed_call

@frappe.whitelist(allow_guest=True)
def handle_incoming_call(**kwargs):
	try:
		exotel_settings = get_exotel_settings()
		if not exotel_settings.enabled: return

		call_payload = kwargs
		status = call_payload.get('Status')
		if status == 'free':
			return

		call_log = get_call_log(call_payload)
		if not call_log:
			create_call_log(call_payload)
		else:
			update_call_log(call_payload, call_log=call_log)
	except Exception as e:
		frappe.db.rollback()
		frappe.log_error(title=_('Error in Exotel incoming call'))
		frappe.db.commit()

@frappe.whitelist(allow_guest=True)
def handle_end_call(**kwargs):
	update_call_log(kwargs, 'Completed')

@frappe.whitelist(allow_guest=True)
def handle_missed_call(**kwargs):
	status = ""
	call_type = kwargs.get("CallType")
	dial_call_status = kwargs.get("DialCallStatus")

	if call_type == "incomplete" and dial_call_status == "no-answer":
		status = 'No Answer'
	elif call_type == "client-hangup" and dial_call_status == "canceled":
		status = 'Canceled'
	elif call_type == "incomplete" and dial_call_status == "failed":
		status = 'Failed'

	update_call_log(kwargs, status)

def update_call_log(call_payload, status='Ringing', call_log=None):
	call_log = call_log or get_call_log(call_payload)

	# for a new sid, call_log and get_call_log will be empty so create a new log
	if not call_log:
		call_log = create_call_log(call_payload)
	if call_log:
		call_log.status = status
		call_log.to = call_payload.get('DialWhomNumber')
		call_log.duration = call_payload.get('DialCallDuration') or 0
		call_log.recording_url = call_payload.get('RecordingUrl')
		call_log.save(ignore_permissions=True)
		frappe.db.commit()
		return call_log

def get_call_log(call_payload):
	call_log = frappe.get_all('Call Log', {
		'id': call_payload.get('CallSid'),
	}, limit=1)

	if call_log:
		return frappe.get_doc('Call Log', call_log[0].name)

def create_call_log(call_payload):
	call_log = frappe.new_doc('Call Log')
	call_log.id = call_payload.get('CallSid')
	call_log.to = call_payload.get('DialWhomNumber')
	call_log.medium = call_payload.get('To')
	call_log.status = 'Ringing'
	setattr(call_log, 'from', call_payload.get('CallFrom'))
	call_log.save(ignore_permissions=True)
	frappe.db.commit()
	return call_log

@frappe.whitelist()
def get_call_status(call_id):
	endpoint = get_exotel_endpoint('Calls/{call_id}.json'.format(call_id=call_id))
	response = requests.get(endpoint)
	status = response.json().get('Call', {}).get('Status')
	return status

@frappe.whitelist()
def make_a_call(from_number, to_number, caller_id):
	endpoint = get_exotel_endpoint('Calls/connect.json?details=true')
	response = requests.post(endpoint, data={
		'From': from_number,
		'To': to_number,
		'CallerId': caller_id
	})

	return response.json()

def get_exotel_settings():
	return frappe.get_single('Exotel Settings')

def whitelist_numbers(numbers, caller_id):
	endpoint = get_exotel_endpoint('CustomerWhitelist')
	response = requests.post(endpoint, data={
		'VirtualNumber': caller_id,
		'Number': numbers,
	})

	return response

def get_all_exophones():
	endpoint = get_exotel_endpoint('IncomingPhoneNumbers')
	response = requests.post(endpoint)
	return response

def get_exotel_endpoint(action):
	settings = get_exotel_settings()
	return 'https://{api_key}:{api_token}@api.exotel.com/v1/Accounts/{sid}/{action}'.format(
		api_key=settings.api_key,
		api_token=settings.api_token,
		sid=settings.account_sid,
		action=action
	)