1 files changed, 72 insertions, 0 deletions
diff --git a/lib/active_file/site/disk_site.rb b/lib/active_file/site/disk_site.rb
new file mode 100644
index 0000000000..1fa77029c7
--- /dev/null
+++ b/lib/active_file/site/disk_site.rb
@@ -0,0 +1,72 @@
+require "fileutils"
+require "pathname"
+
+class ActiveFile::Site::DiskSite < ActiveFile::Site
+  attr_reader :root
+
+  def initialize(root:)
+    @root = root
+  end
+
+
+  def upload(key, io)
+    File.open(make_path_for(key), "wb") do |file|
+      while chunk = io.read(65536)
+        file.write(chunk)
+      end
+    end
+  end
+
+  def download(key)
+    if block_given?
+      File.open(path_for(key)) do |file|
+        while data = file.read(65536)
+          yield data
+        end
+      end
+    else
+      File.open path_for(key), &:read
+    end
+  end
+
+  def delete(key)
+    File.delete path_for(key) rescue Errno::ENOENT # Ignore files already deleted
+  end
+
+  def exist?(key)
+    File.exist? path_for(key)
+  end
+
+
+  def url(key, disposition:, expires_in: nil)
+    verified_key_with_expiration = ActiveFile::VerifiedKeyWithExpiration.encode(key, expires_in: expires_in)
+
+    if defined?(Rails)
+      Rails.application.routes.url_helpers.rails_disk_blob_path(verified_key_with_expiration)
+    else
+      "/rails/blobs/#{verified_key_with_expiration}"
+    end
+  end
+
+  def byte_size(key)
+    File.size path_for(key)
+  end
+
+  def checksum(key)
+    Digest::MD5.file(path_for(key)).hexdigest
+  end
+
+
+  private
+    def path_for(key)
+      File.join root, folder_for(key), key
+    end
+
+    def folder_for(key)
+      [ key[0..1], key[2..3] ].join("/")
+    end
+
+    def make_path_for(key)
+      path_for(key).tap { |path| FileUtils.mkdir_p File.dirname(path) }
+    end
+end