simplify config by switching the authentication to app access tokens

README.md

@@ -21,7 +21,6 @@ Create config file:
 Set paramaters in `matterbook.yml`:
 ```
 facebook:
-  access_token: SGEgaGEgaGEhIENoY2lhxYJiecWbIDpQ # Obtained from https://developers.facebook.com/tools/explorer
   app_id: 123 # Obtained from https://developers.facebook.com/apps
   app_secret: 123 # Obtained from https://developers.facebook.com/apps
 

matterbook.py

@@ -33,21 +33,13 @@ def main():
         time.sleep(10)
 
 
-
 def load_config():
     with open(CONFIG_FILE, 'r') as f:
         config = yaml.safe_load(f)
     log.debug("Config loaded")
     return config
 
 
-def save_config(config):
-    with open(CONFIG_FILE, 'w') as f:
-        yaml.safe_dump(config, f, default_flow_style=False)
-    log.debug("Config saved")
-    return config
-
-
 def check_posts(graph, config):
     mm_config = config['mattermost']
     integrations = config['integrations']
@@ -106,22 +98,12 @@ def load_last_saved_post(integration_id):
 
 
 def get_graph_api(config):
-    extended_token = get_extended_token(config)
-    graph = facebook.GraphAPI(access_token=extended_token, version=FB_API_VERSION)
-    return graph
-
-
-def get_extended_token(config):
     fb_config = config['facebook']
-    access_token = fb_config['access_token']
     app_id = fb_config['app_id']
     app_secret = fb_config['app_secret']
-    graph = facebook.GraphAPI(access_token=access_token, version=FB_API_VERSION)
-    extended_token_data = graph.extend_access_token(app_id, app_secret)
-    extended_token = extended_token_data['access_token']
-    fb_config['access_token'] = extended_token
-    save_config(config)
-    return extended_token
+    token = facebook.GraphAPI().get_app_access_token(app_id, app_secret)
+    graph = facebook.GraphAPI(access_token=token, version=FB_API_VERSION)
+    return graph
 
 
 def install_interrupt_handler():

matterbook.yml.sample

@@ -1,5 +1,4 @@
 facebook:
-  access_token: SGEgaGEgaGEhIENoY2lhxYJiecWbIDpQ # Obtained from https://developers.facebook.com/tools/explorer
   app_id: 123 # Obtained from https://developers.facebook.com/apps
   app_secret: 123 # Obtained from https://developers.facebook.com/apps
 integrations: