Add importer

---

Changes to be committed:
+ new file:   app/importers/csv_importer.rb
+ deleted:    lib/tasks/.keep
+ new file:   lib/tasks/csv_import.rake
+ new file:   spec/importers/csv_importer_spec.rb

app/importers/csv_importer.rb

@@ -0,0 +1,27 @@
+require 'csv'
+
+class CsvImporter
+  def initialize(file)
+    @file = file
+    @user = ::User.batch_user
+  end
+
+  def import
+    CSV.foreach(@file) do |row|
+      image = Image.new
+      image.title = [row[1]]
+      image.source = [row[2]]
+      image.visibility = "open"
+      image.depositor = @user.email
+      # Attach the image file and run it through the actor stack
+      # Try entering Hyrax::CurationConcern.actor on a console to see all of the
+      # actors this object will run through.
+      image_binary = File.open("#{::Rails.root}/spec/fixtures/images/#{row[0]}")
+      uploaded_file = Hyrax::UploadedFile.create(user: @user, file: image_binary)
+      attributes_for_actor = { uploaded_files: [uploaded_file.id] }
+      env = Hyrax::Actors::Environment.new(image, ::Ability.new(@user), attributes_for_actor)
+      Hyrax::CurationConcern.actor.create(env)
+      image_binary.close
+    end
+  end
+end

lib/tasks/csv_import.rake

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+ CSV_FILE = "#{::Rails.root}/spec/fixtures/three_line_example.csv"
+ namespace :sample do
+  desc 'Import the three line sample CSV'
+  task :import_three_line_csv => [:environment] do |_task|
+    CsvImporter.new(CSV_FILE).import
+  end
+   desc 'Import a different CSV'
+  task :import, [:filename] => [:environment] do |_task, args|
+    csv_file = args[:filename]
+    CsvImporter.new(csv_file).import
+  end
+end

spec/importers/csv_importer_spec.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+require 'active_fedora/cleaner'
+
+RSpec.describe CsvImporter do
+  let(:one_line_example)   { 'spec/fixtures/one_line_example.csv' }
+  let(:three_line_example) { 'spec/fixtures/three_line_example.csv' }
+  let(:user)               { ::User.batch_user }
+
+  before do
+    DatabaseCleaner.clean
+    ActiveFedora::Cleaner.clean!
+  end
+
+  it  'imports a csv' do
+    expect { CsvImporter.new(three_line_example).import }.to change { Image.count }
+  end
+end