Add config option for Arc.Storage.Local directory

README.md

@@ -14,7 +14,7 @@ Add the latest stable release to your `mix.exs` file:
 ```elixir
 defp deps do
   [
-    arc: "~> 0.5.2",
+    arc: "~> 0.5.3",
     ex_aws: "~> 0.4.10", # Required if using Amazon S3
     httpoison: "~> 0.7"  # Required if using Amazon S3
     poison: "~> 1.2"     # Required if using Amazon S3

lib/arc/storage/local.ex

@@ -1,7 +1,7 @@
 defmodule Arc.Storage.Local do
   def put(definition, version, {file, scope}) do
     destination_dir = definition.storage_dir(version, {file, scope})
-    path = Path.join(destination_dir, file.file_name)
+    path = Path.join([local_dir, destination_dir, file.file_name])
     path |> Path.dirname() |> File.mkdir_p()
     File.copy!(file.path, path)
     {:ok, file.file_name}
@@ -18,8 +18,13 @@ defmodule Arc.Storage.Local do
 
   defp build_local_path(definition, version, file_and_scope) do
     Path.join([
+      local_dir,
       definition.storage_dir(version, file_and_scope),
       Arc.Definition.Versioning.resolve_file_name(definition, version, file_and_scope)
     ])
   end
+
+  defp local_dir do
+    Application.get_env(:arc, :local_dir) || ""
+  end
 end

test/storage/local_test.exs

@@ -38,4 +38,22 @@ defmodule ArcTest.Storage.Local do
     refute File.exists?("arctest/uploads/original-image.png")
     refute File.exists?("arctest/uploads/1/thumb-image.png")
   end
+
+  test "local_dir option" do
+    local_dir = "arctest/uploads/local_dir"
+    Application.put_env :arc, :local_dir, local_dir
+
+    assert {:ok, "original-image.png"} == Arc.Storage.Local.put(DummyDefinition, :original, {Arc.File.new(%{filename: "original-image.png", path: @img}), nil})
+    assert {:ok, "1/thumb-image.png"} == Arc.Storage.Local.put(DummyDefinition, :thumb, {Arc.File.new(%{filename: "1/thumb-image.png", path: @img}), nil})
+
+    assert File.exists?("#{local_dir}/arctest/uploads/original-image.png")
+    assert File.exists?("#{local_dir}/arctest/uploads/1/thumb-image.png")
+    assert "#{local_dir}/arctest/uploads/original-image.png" == DummyDefinition.url("image.png", :original)
+    assert "#{local_dir}/arctest/uploads/1/thumb-image.png" == DummyDefinition.url("1/image.png", :thumb)
+
+    Arc.Storage.Local.delete(DummyDefinition, :original, {%{file_name: "image.png"}, nil})
+    Arc.Storage.Local.delete(DummyDefinition, :thumb, {%{file_name: "image.png"}, nil})
+    refute File.exists?("#{local_dir}/arctest/uploads/original-image.png")
+    refute File.exists?("#{local_dir}/arctest/uploads/1/thumb-image.png")
+  end
 end