[Enhancement] Allow forcing a refresh of source metadata (#194)

* Stopped sources from fetching metadata on every update

* Added action button to force a metadata refresh

lib/pinchflat_web/controllers/sources/source_controller.ex

@@ -10,6 +10,7 @@ defmodule PinchflatWeb.Sources.SourceController do
   alias Pinchflat.Profiles.MediaProfile
   alias Pinchflat.Downloading.DownloadingHelpers
   alias Pinchflat.SlowIndexing.SlowIndexingHelpers
+  alias Pinchflat.Metadata.SourceMetadataStorageWorker
 
   def index(conn, _params) do
     sources =
@@ -104,20 +105,38 @@ defmodule PinchflatWeb.Sources.SourceController do
   end
 
   def force_download(conn, %{"source_id" => id}) do
-    source = Sources.get_source!(id)
-    DownloadingHelpers.enqueue_pending_download_tasks(source)
-
-    conn
-    |> put_flash(:info, "Forced download of pending media items.")
-    |> redirect(to: ~p"/sources/#{source}")
+    wrap_forced_action(
+      conn,
+      id,
+      "Forcing download of pending media items.",
+      &DownloadingHelpers.enqueue_pending_download_tasks/1
+    )
   end
 
   def force_index(conn, %{"source_id" => id}) do
-    source = Sources.get_source!(id)
-    SlowIndexingHelpers.kickoff_indexing_task(source, %{force: true})
+    wrap_forced_action(
+      conn,
+      id,
+      "Index enqueued.",
+      &SlowIndexingHelpers.kickoff_indexing_task(&1, %{force: true})
+    )
+  end
+
+  def force_metadata_refresh(conn, %{"source_id" => id}) do
+    wrap_forced_action(
+      conn,
+      id,
+      "Metadata refresh enqueued.",
+      &SourceMetadataStorageWorker.kickoff_with_task/1
+    )
+  end
+
+  defp wrap_forced_action(conn, source_id, message, fun) do
+    source = Sources.get_source!(source_id)
+    fun.(source)
 
     conn
-    |> put_flash(:info, "Index enqueued.")
+    |> put_flash(:info, message)
     |> redirect(to: ~p"/sources/#{source}")
   end
 

lib/pinchflat_web/controllers/sources/source_html.ex

@@ -36,6 +36,15 @@ defmodule PinchflatWeb.Sources.SourceHTML do
     |> Phoenix.json_library().encode!()
   end
 
+  def title_filter_regex_help do
+    url = "https://github.com/nalgeon/sqlean/blob/main/docs/regexp.md#supported-syntax"
+    classes = "underline decoration-bodydark decoration-1 hover:decoration-white"
+
+    """
+    A PCRE-compatible regex. Only media with titles that match this regex will be downloaded. <a href="#{url}" class="#{classes}" target="_blank">See here</a> for syntax
+    """
+  end
+
   def output_path_template_override_help do
     help_button_classes = "underline decoration-bodydark decoration-1 hover:decoration-white cursor-pointer"
     help_button = ~s{<span class="#{help_button_classes}" x-on:click="$dispatch('load-template')">Click here</span>}

lib/pinchflat_web/controllers/sources/source_html/actions_dropdown.html.heex

@@ -30,6 +30,15 @@
       Force Index
     </.link>
   </:option>
+  <:option>
+    <.link
+      href={~p"/sources/#{@source}/force_metadata_refresh"}
+      method="post"
+      data-confirm="Are you sure you want to refresh this source's metadata?"
+    >
+      Refresh Metadata
+    </.link>
+  </:option>
   <:option>
     <div class="h-px w-full bg-bodydark2"></div>
   </:option>

lib/pinchflat_web/controllers/sources/source_html/source_form.html.heex

@@ -23,7 +23,7 @@
       field={f[:custom_name]}
       type="text"
       label="Custom Name"
-      help="Something descriptive. Does not impact indexing or downloading"
+      help="Does not impact indexing or downloading. Will be inferred from the source if left blank"
     />
 
     <.input field={f[:original_url]} type="text" label="Source URL" help="URL of a channel or playlist (required)" />
@@ -111,7 +111,8 @@
         type="text"
         label="Title Filter Regex"
         placeholder="(?i)^How to Bike$"
-        help="A PCRE-compatible regex. Only media with titles that match this regex will be downloaded. Look up 'SQLean Regex docs' for more"
+        help={title_filter_regex_help()}
+        html_help={true}
       />
 
       <section