Show message for earned programs credentials

ECOM-3015

openedx/core/djangoapps/credentials/utils.py

@@ -0,0 +1,61 @@
+"""Helper functions for working with Credentials."""
+from __future__ import unicode_literals
+import logging
+
+from openedx.core.djangoapps.credentials.models import CredentialsApiConfig
+from openedx.core.djangoapps.programs.utils import get_programs_for_credentials
+from openedx.core.lib.api_utils import get_api_data
+
+
+log = logging.getLogger(__name__)
+
+
+def get_user_credentials(user):
+    """Given a user, get credentials earned from the Credentials service.
+    Arguments:
+        user (User): The user to authenticate as when requesting credentials.
+    Returns:
+        list of dict, representing credentials returned by the Credentials
+        service.
+    """
+    credential_configuration = CredentialsApiConfig.current()
+    user_query = {'username': user.username}
+    credentials = get_api_data(
+        credential_configuration, user, credential_configuration.API_NAME, 'user_credentials', querystring=user_query
+    )
+    return credentials
+
+
+def get_user_program_credentials(user):
+    """Given a user, get the list of all program credentials earned and returns
+    list of dictionaries containing related programs data.
+
+    Arguments:
+        user (User): The user object for getting programs credentials.
+
+    Returns:
+        list, containing programs dictionaries.
+    """
+    programs_credentials_data = []
+    credential_configuration = CredentialsApiConfig.current()
+    if not credential_configuration.is_learner_issuance_enabled:
+        log.debug('Display of certificates for programs is disabled.')
+        return programs_credentials_data
+
+    credentials = get_user_credentials(user)
+    if not credentials:
+        log.info('No credential earned by the given user.')
+        return programs_credentials_data
+
+    programs_credentials = []
+    for credential in credentials:
+        try:
+            if 'program_id' in credential['credential'] and credential['status'] == 'awarded':
+                programs_credentials.append(credential)
+        except KeyError:
+            log.exception('Invalid credential structure: %r', credential)
+
+    if programs_credentials:
+        programs_credentials_data = get_programs_for_credentials(user, programs_credentials)
+
+    return programs_credentials_data