integrations: Add Greenhouse integration.

zerver/webhooks/greenhouse/view.py

@@ -0,0 +1,64 @@
+from __future__ import absolute_import
+
+from django.utils.translation import ugettext as _
+from django.http import HttpRequest, HttpResponse
+from typing import Any
+
+from zerver.lib.actions import check_send_message
+from zerver.lib.response import json_success, json_error
+from zerver.decorator import REQ, has_request_variables, api_key_only_webhook_view
+from zerver.models import UserProfile, Client
+
+import ujson
+
+MESSAGE_TEMPLATE = "Applying for role:\n{}\n**Emails:**\n{}\n\n>**Attachments:**\n{}"
+
+def dict_list_to_string(some_list):
+    # type: (List[Any]) -> str
+    internal_template = ''
+    for item in some_list:
+        item_type = item.get('type', '').title()
+        item_value = item.get('value')
+        item_url = item.get('url')
+        if item_type and item_value:
+            internal_template += "{}\n{}\n".format(item_type, item_value)
+        elif item_type and item_url:
+            internal_template += "[{}]({})\n".format(item_type, item_url)
+    return internal_template
+
+def message_creator(action, application):
+    # type: (str, Dict[str, Any]) -> str
+    message = MESSAGE_TEMPLATE.format(
+        application['jobs'][0]['name'],
+        dict_list_to_string(application['candidate']['email_addresses']),
+        dict_list_to_string(application['candidate']['attachments']))
+    return message
+
+@api_key_only_webhook_view('Greenhouse')
+@has_request_variables
+def api_greenhouse_webhook(request, user_profile, client,
+                           payload=REQ(argument_type='body'),
+                           stream=REQ(default='greenhouse'), topic=REQ(default=None)):
+    # type: (HttpRequest, UserProfile, Client, Dict[str, Any], str, str) -> HttpResponse
+    try:
+        if payload['action'] == 'update_candidate':
+            candidate = payload['payload']['candidate']
+        else:
+            candidate = payload['payload']['application']['candidate']
+        action = payload['action'].replace('_', ' ').title()
+        body = "{}\n>{} {}\nID: {}\n{}".format(
+            action,
+            candidate['first_name'],
+            candidate['last_name'],
+            str(candidate['id']),
+            message_creator(payload['action'],
+                            payload['payload']['application']))
+
+        if topic is None:
+            topic = "{} - {}".format(action, str(candidate['id']))
+
+    except KeyError as e:
+        return json_error(_("Missing key {} in JSON").format(str(e)))
+
+    check_send_message(user_profile, client, 'stream', [stream], topic, body)
+    return json_success()