Server: assert remoteId and host pair is unique

server/controllers/api/remote/videos.js

@@ -79,6 +79,16 @@ function addRemoteVideo (videoToCreateData, fromPod, finalCallback) {
 
     databaseUtils.startSerializableTransaction,
 
+    function assertRemoteIdAndHostUnique (t, callback) {
+      db.Video.loadByHostAndRemoteId(fromPod.host, videoToCreateData.remoteId, function (err, video) {
+        if (err) return callback(err)
+
+        if (video) return callback(new Error('RemoteId and host pair is not unique.'))
+
+        return callback(null, t)
+      })
+    },
+
     function findOrCreateAuthor (t, callback) {
       const name = videoToCreateData.author
       const podId = fromPod.id

server/tests/api/check-params/remotes.js

@@ -41,6 +41,8 @@ describe('Test remote videos API validators', function () {
 
   describe('When adding a video', function () {
     it('Should check when adding a video')
+
+    it('Should not add an existing remoteId and host pair')
   })
 
   describe('When removing a video', function () {