Add application config endpoint

app/api/blueprint.py

@@ -32,7 +32,7 @@ def add_resources():
                                       DashboardListResource,
                                       DashboardWidgetResource,
                                       DashboardWidgetListResource)
-    from .resources.app import MqttConfigResource
+    from .resources.app import MqttConfigResource, AppConfigResource
 
     api.add_resource(AccountResource, '/v1/accounts/<int:account_id>')
     api.add_resource(AccountListResource, '/v1/accounts')
@@ -74,6 +74,7 @@ def add_resources():
     api.add_resource(DashboardWidgetListResource,
                      '/v1/dashboards/<int:dashboard_id>/widgets')
     api.add_resource(MqttConfigResource, '/v1/config/mqtt')
+    api.add_resource(AppConfigResource, '/v1/config')
 
 
 add_resources()

app/api/resources/app.py

@@ -29,6 +29,38 @@ class MqttConfigSchema(BaseResourceSchema):
     endpoints = fields.Nested(BasicMqttEndpointSchema, many=True)
 
 
+class BasicVersionInfoSchema(Schema):
+    name = fields.String()
+    build_number = fields.String()
+
+
+class VersionInfoSchema(BaseResourceSchema, BasicVersionInfoSchema):
+    pass
+
+
+class BasicFrontendInfoSchema(Schema):
+    url = fields.String()
+
+
+class FrontendInfoSchema(BaseResourceSchema, BasicFrontendInfoSchema):
+    pass
+
+
+class BasicEmailInfoSchema(Schema):
+    mailer_account = fields.String()
+    contact_accounts = fields.List(fields.String, many=True)
+
+
+class EmailInfoSchema(BaseResourceSchema, BasicEmailInfoSchema):
+    pass
+
+
+class AppConfigSchema(BaseResourceSchema):
+    version = fields.Nested(BasicVersionInfoSchema)
+    frontend = fields.Nested(BasicFrontendInfoSchema)
+    email = fields.Nested(BasicEmailInfoSchema)
+
+
 def get_mqtt_broker_info(config):
     return {
         'url': config['MQTT_BROKER_URL'],
@@ -68,6 +100,26 @@ def get_mqtt_endpoints(config):
     ]
 
 
+def get_app_version_info(config):
+    return {
+        'name': config['APP_VERSION'],
+        'build_number': config['APP_RELEASE_VERSION_STRING']
+    }
+
+
+def get_frontend_info(config):
+    return {
+        'url': config['FRONTEND_URL']
+    }
+
+
+def get_email_info(config):
+    return {
+        'mailer_account': config['MAIL_DEFAULT_SENDER'],
+        'contact_accounts': config['MAIL_CONTACT_ACCOUNTS']
+    }
+
+
 class MqttConfigResource(ProtectedResource):
     @swag_from('swagger/get_mqtt_config_spec.yaml')
     def get(self):
@@ -75,3 +127,13 @@ class MqttConfigResource(ProtectedResource):
             'broker': get_mqtt_broker_info(app.config),
             'endpoints':  get_mqtt_endpoints(app.config)
         }, 200
+
+
+class AppConfigResource(ProtectedResource):
+    @swag_from('swagger/get_app_config_spec.yaml')
+    def get(self):
+        return AppConfigSchema().dump({
+            'version': get_app_version_info(app.config),
+            'frontend': get_frontend_info(app.config),
+            'email': get_email_info(app.config)
+        }), 200

app/api/resources/swagger/get_app_config_spec.yaml

@@ -0,0 +1,14 @@
+Gets server app configuration and description
+---
+tags:
+  - Config
+responses:
+  200:
+    description: Success
+    schema:
+      type: object
+      required:
+        - content
+      properties:
+        content:
+          $ref: '#/definitions/AppConfig'

app/api/resources/swagger/get_mqtt_config_spec.yaml

@@ -13,4 +13,3 @@ responses:
       properties:
         content:
           $ref: '#/definitions/MqttConfig'
-

app/swagger/template.yaml

@@ -328,6 +328,61 @@ definitions:
       name:
         ref: '#definitions/genericname'
 
+  VersionInfo:
+    type: object
+    required:
+      - name
+      - build_number
+    properties:
+      name:
+        type: string
+        description: Version name following semantic versioning
+        example: 0.4.3
+      build_number:
+        type: string
+        description: Number of current build/release
+        example: v72
+
+  FrontendInfo:
+    type: object
+    required:
+      - url
+    properties:
+      url:
+        type: string
+        description: URL of frontend used with this backend.
+        example: https://iot-frontend-app.herokuapp.com
+
+  EmailConfigInfo:
+    type: object
+    required:
+      - mailer_account
+      - contact_accounts
+    properties:
+      mailer_account:
+        type: string
+        description: Account used to send emails to users
+        example: final.iot.backend.mailer@gmail.com
+      contact_accounts:
+        type: string
+        description: Emails used to contact developers
+        example: []
+
+  AppConfig:
+    type: object
+    required:
+      - version
+      - frontend
+      - email
+    properties:
+      version:
+        $ref: '#/definitions/VersionInfo'
+      frontend:
+        $ref: '#/definitions/FrontendInfo'
+      email:
+        $ref: '#/definitions/EmailConfigInfo'
+
+
   MqttBroker:
     type: object
     required:

config.py

@@ -3,6 +3,8 @@ import os
 # App configuration
 DEBUG = os.environ['DEBUG']
 APP_VERSION = '0.4.2'
+APP_RELEASE_VERSION_STRING = (os.environ.get('HEROKU_RELEASE_VERSION')
+                              or 'Unknown')
 
 # Define the application directory
 BASE_DIR = os.path.abspath(os.path.dirname(__file__))
@@ -56,6 +58,7 @@ MAIL_PASSWORD = os.environ['APP_MAIL_PASSWORD']
 
 # mail accounts
 MAIL_DEFAULT_SENDER = 'final.iot.backend.mailer@gmail.com'
+MAIL_CONTACT_ACCOUNTS = ['esarajcic1@etf.unsa.ba', 'valjic1@etf.unsa.ba']
 
 # frontend
 FRONTEND_URL = (os.environ.get('IOT_FRONTEND_URL') or