Added configuration model for credentials

ECOM-3033

openedx/core/djangoapps/credentials/models.py

@@ -1,3 +1,66 @@
 """
 Models for credentials support for the LMS and Studio.
 """
+
+from urlparse import urljoin
+
+from django.utils.translation import ugettext_lazy as _
+from django.db import models
+
+from config_models.models import ConfigurationModel
+
+
+class CredentialsApiConfig(ConfigurationModel):
+    """
+    Manages configuration for connecting to the Credential service and using its
+    API.
+    """
+    internal_service_url = models.URLField(verbose_name=_("Internal Service URL"))
+    public_service_url = models.URLField(verbose_name=_("Public Service URL"))
+
+    enable_learner_issuance = models.BooleanField(
+        verbose_name=_("Enable Learner Issuance"),
+        default=False,
+        help_text=_(
+            "Enable issuance of credentials via Credential Service."
+        )
+    )
+    enable_studio_authoring = models.BooleanField(
+        verbose_name=_("Enable Authoring of Credential in Studio"),
+        default=False,
+        help_text=_(
+            "Enable authoring of Credential Service credentials in Studio."
+        )
+    )
+
+    def __unicode__(self):
+        return self.public_api_url
+
+    @property
+    def internal_api_url(self):
+        """
+        Generate a URL based on internal service URL and API version number.
+        """
+        return urljoin(self.internal_service_url, '/api/v1/')
+
+    @property
+    def public_api_url(self):
+        """
+        Generate a URL based on public service URL and API version number.
+        """
+        return urljoin(self.public_service_url, '/api/v1/')
+
+    @property
+    def is_learner_issuance_enabled(self):
+        """
+        Indicates whether the learner credential should be enabled or not.
+        """
+        return self.enabled and self.enable_learner_issuance
+
+    @property
+    def is_studio_authoring_enabled(self):
+        """
+        Indicates whether Studio functionality related to Credential should
+        be enabled or not.
+        """
+        return self.enabled and self.enable_studio_authoring