add presences controller

controllers/presences_controller.py

+from flask import Blueprint, jsonify
+from flask_restful import Api, Resource
+
+from consts.status import Status, response_offline
+from utils.database_utils import get_presence, get_state
+
+presences_controller = Blueprint('presences_controller', __name__)
+api = Api(presences_controller)
+
+
+class PresencesResource(Resource):
+    def get(self, resource_id: str):
+        if get_state() == Status.OFFLINE:
+            return response_offline, 403
+
+        presences = get_presence(resource_id)
+        return jsonify(presences)
+
+api.add_resource(PresencesResource, '/resources/<string:resource_id>/presences')

main.py

@@ -9,6 +9,7 @@ from consts.status import Status
 from controllers.duplicate_controller import duplicate_controller
 from controllers.node_controller import node_controller
 from controllers.ping_controller import ping_controller
+from controllers.presences_controller import presences_controller
 from controllers.resource_controller import resource_controller
 from controllers.resources_controller import resources_controller
 from controllers.state_controller import state_controller
@@ -26,6 +27,7 @@ app.register_blueprint(resources_controller, url_prefix='/api')
 app.register_blueprint(state_controller, url_prefix='/api')
 app.register_blueprint(duplicate_controller, url_prefix='/api')
 app.register_blueprint(ping_controller, url_prefix='/api')
+app.register_blueprint(presences_controller, url_prefix='/api')
 
 
 @app.route('/api/subscribe', methods=['GET'])