Change Channel to Source (#12)

* Ensure channel detail lookup doesn't download the video - oops

* Ran the needful migrations for replacing channels with sources

* got media source test back working

* channel tasks test

* Media indexing worker test

* media tests

* Got all tests working except controller tests

* got all tests working

* Renamed Channel struct to Source

* renamed ChannelTasks

* More renaming; renamed channel details module

* Removed Channel yt-dlp module, instead throwing things in the VideoCollection module

* Renamed what looks like the last of the outstanding data

lib/pinchflat/media/media_item.ex

@@ -7,11 +7,11 @@ defmodule Pinchflat.Media.MediaItem do
   import Ecto.Changeset
 
   alias Pinchflat.Tasks.Task
-  alias Pinchflat.MediaSource.Channel
+  alias Pinchflat.MediaSource.Source
   alias Pinchflat.Media.MediaMetadata
 
-  @required_fields ~w(media_id channel_id)a
-  @allowed_fields ~w(title media_id media_filepath channel_id subtitle_filepaths)a
+  @required_fields ~w(media_id source_id)a
+  @allowed_fields ~w(title media_id media_filepath source_id subtitle_filepaths)a
 
   schema "media_items" do
     field :title, :string
@@ -22,7 +22,7 @@ defmodule Pinchflat.Media.MediaItem do
     # Will very likely revisit because I can't leave well-enough alone.
     field :subtitle_filepaths, {:array, {:array, :string}}, default: []
 
-    belongs_to :channel, Channel
+    belongs_to :source, Source
 
     has_one :metadata, MediaMetadata, on_replace: :update
 
@@ -37,6 +37,6 @@ defmodule Pinchflat.Media.MediaItem do
     |> cast(attrs, @allowed_fields)
     |> cast_assoc(:metadata, with: &MediaMetadata.changeset/2, required: false)
     |> validate_required(@required_fields)
-    |> unique_constraint([:media_id, :channel_id])
+    |> unique_constraint([:media_id, :source_id])
   end
 end