[Enhancement] Filter media based on min and/or max duration (#356)

* Added duration limits to source model

* Added duration limits to source form

* Added validation for min/max amounts

* Added duration checks to pending query

* Moved min/max filters up in source form

* Removed debugger

lib/pinchflat/sources/source.ex

@@ -37,6 +37,8 @@ defmodule Pinchflat.Sources.Source do
     media_profile_id
     output_path_template_override
     marked_for_deletion_at
+    min_duration_seconds
+    max_duration_seconds
   )a
 
   # Expensive API calls are made when a source is inserted/updated so
@@ -84,6 +86,9 @@ defmodule Pinchflat.Sources.Source do
     field :title_filter_regex, :string
     field :output_path_template_override, :string
 
+    field :min_duration_seconds, :integer
+    field :max_duration_seconds, :integer
+
     field :series_directory, :string
     field :nfo_filepath, :string
     field :poster_filepath, :string
@@ -118,6 +123,7 @@ defmodule Pinchflat.Sources.Source do
     |> dynamic_default(:uuid, fn _ -> Ecto.UUID.generate() end)
     |> validate_required(required_fields)
     |> validate_title_regex()
+    |> validate_min_and_max_durations()
     |> validate_number(:retention_period_days, greater_than_or_equal_to: 0)
     # Ensures it ends with `.{{ ext }}` or `.%(ext)s` or similar (with a little wiggle room)
     |> validate_format(:output_path_template_override, MediaProfile.ext_regex(), message: "must end with .{{ ext }}")
@@ -164,6 +170,17 @@ defmodule Pinchflat.Sources.Source do
 
   defp validate_title_regex(changeset), do: changeset
 
+  defp validate_min_and_max_durations(changeset) do
+    min_duration = get_change(changeset, :min_duration_seconds)
+    max_duration = get_change(changeset, :max_duration_seconds)
+
+    case {min_duration, max_duration} do
+      {min, max} when is_nil(min) or is_nil(max) -> changeset
+      {min, max} when min >= max -> add_error(changeset, :max_duration_seconds, "must be greater than minumum duration")
+      _ -> changeset
+    end
+  end
+
   defimpl Jason.Encoder, for: Source do
     def encode(value, opts) do
       value