Merge branch 'master' into 2681-new-inactive-user-notification

[arvados.git] / apps / workbench / app / models / collection.rb

diff --git a/apps/workbench/app/models/collection.rb b/apps/workbench/app/models/collection.rb
index ee3a7883e3e0dab39173069340078fe401fd07fc..2fe4e2b748f1119f8d2c7b1934e4679480fcb781 100644 (file)
--- a/apps/workbench/app/models/collection.rb
+++ b/apps/workbench/app/models/collection.rb
@@ -1,4 +1,21 @@
-class Collection < OrvosBase
+class Collection < ArvadosBase
+  include ApplicationHelper
+
+  MD5_EMPTY = 'd41d8cd98f00b204e9800998ecf8427e'
+
+  # Return true if the given string is the locator of a zero-length blob
+  def self.is_empty_blob_locator? locator
+    !!locator.to_s.match("^#{MD5_EMPTY}(\\+.*)?\$")
+  end
+
+  def self.goes_in_folders?
+    true
+  end
+
+  def content_summary
+    human_readable_bytes_html(total_bytes) + " " + super
+  end
+
   def total_bytes
     if files
       tot = 0
@@ -8,4 +25,42 @@ class Collection < OrvosBase
       tot
     end
   end
+
+  def files_tree
+    tree = files.group_by { |file_spec| File.split(file_spec.first) }
+    # Fill in entries for empty directories.
+    tree.keys.map { |basedir, _| File.split(basedir) }.each do |splitdir|
+      until tree.include?(splitdir)
+        tree[splitdir] = []
+        splitdir = File.split(splitdir.first)
+      end
+    end
+    dir_to_tree = lambda do |dirname|
+      # First list subdirectories, with their files inside.
+      subnodes = tree.keys.select { |bd, td| (bd == dirname) and (td != '.') }
+        .sort.flat_map do |parts|
+        [parts + [nil]] + dir_to_tree.call(File.join(parts))
+      end
+      # Then extend that list with files in this directory.
+      subnodes + tree[File.split(dirname)]
+    end
+    dir_to_tree.call('.')
+  end
+
+  def attribute_editable?(attr)
+    false
+  end
+
+  def self.creatable?
+    false
+  end
+
+  def provenance
+    arvados_api_client.api "collections/#{self.uuid}/", "provenance"
+  end
+
+  def used_by
+    arvados_api_client.api "collections/#{self.uuid}/", "used_by"
+  end
+
 end