Add RemoteContentNode class to allow scripted curation of existing content

Author: jamalex

.gitignore

@@ -134,3 +134,5 @@ video_cache_py3.sqlite
 .vim/
 
 cache.sqlite
+
+chefdata/

examples/remotecontent/sushichef.py

@@ -0,0 +1,126 @@
+#!/usr/bin/env python
+from ricecooker.chefs import SushiChef
+from ricecooker.classes.files import AudioFile
+from ricecooker.classes.files import DocumentFile
+from ricecooker.classes.licenses import get_license
+from ricecooker.classes.nodes import AudioNode
+from ricecooker.classes.nodes import DocumentNode
+from ricecooker.classes.nodes import RemoteContentNode
+from ricecooker.classes.nodes import TopicNode
+
+"""
+This example shows how to use the RemoteContentNode to create a channel that
+curates content from another channel already on Studio into a new channel.
+"""
+
+SOURCE_DOMAIN = "testdomain.org"  ## change me!
+
+original_channel_data = {
+    "channel_id": None,
+    "doc_node_id": None,
+    "audio_node_id": None,
+}
+
+
+class OriginalChannelChef(SushiChef):
+    channel_info = {
+        "CHANNEL_TITLE": "Original channel",
+        "CHANNEL_SOURCE_DOMAIN": SOURCE_DOMAIN,
+        "CHANNEL_SOURCE_ID": "originalchannel",
+        "CHANNEL_LANGUAGE": "en",
+    }
+
+    def construct_channel(self, **kwargs):
+        channel = self.get_channel(**kwargs)
+
+        document_node = DocumentNode(
+            title="Growing potatoes",
+            description="An article about growing potatoes on your rooftop.",
+            source_id="pubs/mafri-potatoe",
+            license=get_license("CC BY", copyright_holder="University of Alberta"),
+            files=[
+                DocumentFile(
+                    path="https://www.gov.mb.ca/inr/pdf/pubs/mafri-potatoe.pdf",
+                    language="en",
+                )
+            ],
+        )
+        channel.add_child(document_node)
+
+        audio_node = AudioNode(
+            source_id="also-sprach",
+            title="Also Sprach Zarathustra",
+            author="Kevin MacLeod / Richard Strauss",
+            description="Also Sprach Zarathustra, Op. 30, is a tone poem by Richard Strauss, composed in 1896.",
+            license=get_license("CC BY", copyright_holder="Kevin MacLeod"),
+            files=[
+                AudioFile(
+                    "https://ia600702.us.archive.org/33/items/Classical_Sampler-9615/Kevin_MacLeod_-_Also_Sprach_Zarathustra.mp3"
+                )
+            ],
+        )
+        channel.add_child(audio_node)
+
+        return channel
+
+
+class CuratedChannelChef(SushiChef):
+    channel_info = {
+        "CHANNEL_TITLE": "Curated channel",
+        "CHANNEL_SOURCE_DOMAIN": SOURCE_DOMAIN,
+        "CHANNEL_SOURCE_ID": "curatedchannel",
+        "CHANNEL_LANGUAGE": "en",
+    }
+
+    def construct_channel(self, **kwargs):
+        channel = self.get_channel(**kwargs)
+
+        document_topic = TopicNode(
+            title="Documents",
+            source_id="documents",
+        )
+        channel.add_child(document_topic)
+        remote_document = RemoteContentNode(
+            title="Glorious new title for the potato doc",
+            source_channel_id=original_channel_data["channel_id"],
+            source_node_id=original_channel_data["doc_node_id"],
+        )
+        document_topic.add_child(remote_document)
+
+        audio_topic = TopicNode(
+            title="Audio",
+            source_id="audio",
+        )
+        channel.add_child(audio_topic)
+        remote_audio = RemoteContentNode(
+            source_channel_id=original_channel_data["channel_id"],
+            source_node_id=original_channel_data["audio_node_id"],
+        )
+        audio_topic.add_child(remote_audio)
+
+        return channel
+
+
+if __name__ == "__main__":
+    """
+    Run this script on the command line using:
+        python sushichef.py --token=YOURTOKENHERE9139139f3a23232
+    """
+    original_chef = OriginalChannelChef()
+    original_chef.main()
+    original_channel = original_chef.construct_channel()
+
+    original_channel_data["channel_id"] = original_channel.get_node_id().hex
+    original_channel_data["doc_node_id"] = (
+        original_channel.children[0].get_node_id().hex
+    )
+    original_channel_data["audio_node_id"] = (
+        original_channel.children[1].get_node_id().hex
+    )
+
+    input(
+        "Please visit the URL above and deploy the channel, and wait for it to finish. Then press enter to continue..."
+    )
+
+    curated_chef = CuratedChannelChef()
+    curated_chef.main()