Merge pull request #146 from azul/refactor/engines

Refactor/engines

1 files changed, 68 insertions, 0 deletions

diff --git a/app/models/account.rb b/app/models/account.rb
new file mode 100644
index 0000000..cf998e4
--- /dev/null
+++ b/app/models/account.rb
@@ -0,0 +1,68 @@
+#
+# The Account model takes care of the livecycle of a user.
+# It composes a User record and it's identity records.
+# It also allows for other engines to hook into the livecycle by
+# monkeypatching the create, update and destroy methods.
+# There's an ActiveSupport load_hook at the end of this file to
+# make this more easy.
+#
+class Account
+
+  attr_reader :user
+
+  def initialize(user = nil)
+    @user = user
+  end
+
+  # Returns the user record so it can be used in views.
+  def self.create(attrs)
+    @user = User.create(attrs).tap do |user|
+      Identity.create_for user
+    end
+  end
+
+  def update(attrs)
+    if attrs[:password_verifier].present?
+      update_login(attrs[:login])
+      @user.update_attributes attrs.slice(:password_verifier, :password_salt)
+    end
+    # TODO: move into identity controller
+    key = update_pgp_key(attrs[:public_key])
+    @user.errors.set :public_key, key.errors.full_messages
+    @user.save && save_identities
+    @user.refresh_identity
+  end
+
+  def destroy
+    return unless @user
+    Identity.disable_all_for(@user)
+    @user.destroy
+  end
+
+  protected
+
+  def update_login(login)
+    return unless login.present?
+    @old_identity = Identity.for(@user)
+    @user.login = login
+    @new_identity = Identity.for(@user) # based on the new login
+    @old_identity.destination = @user.email_address # alias old -> new
+  end
+
+  def update_pgp_key(key)
+    PgpKey.new(key).tap do |key|
+      if key.present? && key.valid?
+        @new_identity ||= Identity.for(@user)
+        @new_identity.set_key(:pgp, key)
+      end
+    end
+  end
+
+  def save_identities
+    @new_identity.try(:save) && @old_identity.try(:save)
+  end
+
+  # You can hook into the account lifecycle from different engines using
+  #   ActiveSupport.on_load(:account) do ...
+  ActiveSupport.run_load_hooks(:account, self)
+end