Implement history querying for Rights

tests/conftest.py

@@ -72,3 +72,29 @@ def transferred_derived_right(client, alice, bob,
     # Sleep for a bit to let the transaction become valid
     sleep(3)
     return created_derived_right_with_mock_source
+
+
+@pytest.fixture
+def retransferred_derived_right(client, bob, carly, transferred_derived_right):
+    import json
+    from time import sleep
+
+    payload = {
+        'rightId': transferred_derived_right['@id'],
+        'rightsAssignment': {
+            'action': 'loan',
+        },
+        'currentHolder': bob,
+        'to': {
+            'publicKey': carly['publicKey'],
+            'privateKey': None,
+        }
+    }
+
+    client.post(url_for('right_views.righttransferapi'),
+                data=json.dumps(payload),
+                headers={'Content-Type': 'application/json'})
+
+    # Sleep for a bit to let the transaction become valid
+    sleep(3)
+    return transferred_derived_right

tests/test_api.py

@@ -226,3 +226,16 @@ def test_retransferred_right(client, bob, carly, transferred_derived_right):
                        headers={'Content-Type': 'application/json'})
     assert resp.status_code == 200
     assert resp.json == retransfer_expected
+
+
+def test_right_history(client, alice, bob, carly, retransferred_derived_right):
+    right_id = retransferred_derived_right['@id']
+    resp = client.get(
+        url_for('right_views.righthistoryapi', right_id=right_id))
+    assert resp.status_code == 200
+    assert resp.json[0]['user']['publicKey'] == alice['publicKey']
+    assert resp.json[1]['user']['publicKey'] == bob['publicKey']
+    assert resp.json[2]['user']['publicKey'] == carly['publicKey']
+
+    # First transaction should be the CREATE transaction
+    assert resp.json[0]['refId'] == right_id

web/views/rights.py

@@ -42,6 +42,21 @@ def post(self):
         return res
 
 
+class RightHistoryApi(Resource):
+    def get(self, right_id):
+        # Don't worry about whether the entity corresponding to `right_id` is a
+        # Right or a Copyright since we won't be loading it
+        right = entities.Right.from_persist_id(right_id, plugin=coalaip.plugin,
+                                               force_load=False)
+        return [{
+            'user': {
+                'publicKey': event['user']['public_key'],
+                'privateKey': event['user']['private_key'],
+            },
+            'refId': event['ref_id'],
+        } for event in right.history]
+
+
 class RightTransferApi(Resource):
     def post(self):
         parser = reqparse.RequestParser()
@@ -86,5 +101,7 @@ def post(self):
 
 
 right_api.add_resource(RightApi, '/rights', strict_slashes=False)
+right_api.add_resource(RightHistoryApi, '/rights/history/<string:right_id>',
+                       strict_slashes=False)
 right_api.add_resource(RightTransferApi, '/rights/transfer',
                        strict_slashes=False)