Misc refactors 2024-03-14 (#89)

* Adds method to improve cleanup of empty directories

* resolved bug where source metadata worker could call itself in an infinite loop

* Refactored file deletion for media items

* Removed useless filesystem data worker

* Updated task listing fns to take a record directly

* Refactored the way I call workers

* Improved some tests

lib/pinchflat/boot/pre_job_startup_tasks.ex

@@ -14,6 +14,7 @@ defmodule Pinchflat.Boot.PreJobStartupTasks do
 
   alias Pinchflat.Repo
   alias Pinchflat.Settings
+  alias Pinchflat.Filesystem.FilesystemHelpers
 
   def start_link(opts \\ []) do
     GenServer.start_link(__MODULE__, %{}, opts)
@@ -31,6 +32,7 @@ defmodule Pinchflat.Boot.PreJobStartupTasks do
   @impl true
   def init(state) do
     apply_default_settings()
+    ensure_directories_are_writeable()
     rename_old_job_workers()
 
     {:ok, state}
@@ -41,6 +43,21 @@ defmodule Pinchflat.Boot.PreJobStartupTasks do
     Settings.fetch!(:pro_enabled, false)
   end
 
+  defp ensure_directories_are_writeable do
+    directories = [
+      Application.get_env(:pinchflat, :media_directory),
+      Application.get_env(:pinchflat, :tmpfile_directory),
+      Application.get_env(:pinchflat, :metadata_directory)
+    ]
+
+    Enum.each(directories, fn dir ->
+      file = Path.join([dir, ".keep"])
+
+      # This will fail if the directory is not writeable, stopping boot
+      FilesystemHelpers.write_p!(file, "")
+    end)
+  end
+
   # As part of a large refactor, I ended up moving a bunch of workers around. This
   # is a problem because the workers are stored in the database and the runner
   # will try to run the OLD jobs. This is also why these tasks run before the job
@@ -52,7 +69,6 @@ defmodule Pinchflat.Boot.PreJobStartupTasks do
     rename_map = [
       ["Pinchflat.Workers.MediaIndexingWorker", "Pinchflat.FastIndexing.MediaIndexingWorker"],
       ["Pinchflat.Workers.MediaDownloadWorker", "Pinchflat.Downloading.MediaDownloadWorker"],
-      ["Pinchflat.Workers.FilesystemDataWorker", "Pinchflat.Filesystem.FilesystemDataWorker"],
       ["Pinchflat.Workers.FastIndexingWorker", "Pinchflat.FastIndexing.FastIndexingWorker"],
       ["Pinchflat.Workers.MediaCollectionIndexingWorker", "Pinchflat.SlowIndexing.MediaCollectionIndexingWorker"],
       ["Pinchflat.Workers.DataBackfillWorker", "Pinchflat.Boot.DataBackfillWorker"]