Added dropbox api support as service and cleaned up get single call

iotclient/iot_client.py

@@ -8,6 +8,8 @@ from datetime import datetime
 def print_response(response):
     print("Code: " + str(response.status_code) + "; Body: " + str(response.json()))
 
+def unwrap_file(file_str: str) -> bytes:
+    return base64.b64decode(file_str)
 
 def send_image(identifier, image_path, metadata_payload):
     print("Sending image with identifier " + identifier)
@@ -46,7 +48,17 @@ def get_image(identifier):
 
     try:
         response = requests.get(baseurl + get_url)
-        print_response(response)
+        payload = response.json()
+        print(payload['id'])
+        print(payload['metadata'])
+        b64encoded_image = unwrap_file(payload['image_data'])
+        goal_folder_name = "images_fetch"
+        path = "../../"+goal_folder_name+"/"+payload['metadata']['filename']
+        goal_folder_path = os.path.sep.join(os.path.abspath(__file__).split(os.path.sep)[:-3]) + os.path.sep + goal_folder_name        
+        out = open(path, 'wb')
+        out.write(b64encoded_image)
+        out.close()
+        os.system(goal_folder_path + os.path.sep + payload['metadata']['filename'])
     except os.error:
         print("Error sending request")
     return True