Add logging of admin actions (#5757)

* Add logging of admin actions

* Update brakeman whitelist

* Log creates, updates and destroys with history of changes

* i18n: Update Polish translation (#5782)

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

* Split admin navigation into moderation and administration

* Redesign audit log page

* 🇵🇱 (#5795)

* Add color coding to audit log

* Change dismiss->resolve, log all outcomes of report as resolve

* Update terminology (e-mail blacklist) (#5796)

* Update terminology (e-mail blacklist)

imho looks better

* Update en.yml

* Fix code style issues

* i18n-tasks normalize

1 files changed, 103 insertions, 0 deletions

diff --git a/app/helpers/admin/action_logs_helper.rb b/app/helpers/admin/action_logs_helper.rb
new file mode 100644
index 000000000..e85243e57
--- /dev/null
+++ b/app/helpers/admin/action_logs_helper.rb
@@ -0,0 +1,103 @@
+# frozen_string_literal: true
+
+module Admin::ActionLogsHelper
+  def log_target(log)
+    if log.target
+      linkable_log_target(log.target)
+    else
+      log_target_from_history(log.target_type, log.recorded_changes)
+    end
+  end
+
+  def linkable_log_target(record)
+    case record.class.name
+    when 'Account'
+      link_to record.acct, admin_account_path(record.id)
+    when 'User'
+      link_to record.account.acct, admin_account_path(record.account_id)
+    when 'CustomEmoji'
+      record.shortcode
+    when 'Report'
+      link_to "##{record.id}", admin_report_path(record)
+    when 'DomainBlock', 'EmailDomainBlock'
+      link_to record.domain, "https://#{record.domain}"
+    when 'Status'
+      link_to record.account.acct, TagManager.instance.url_for(record)
+    end
+  end
+
+  def log_target_from_history(type, attributes)
+    case type
+    when 'CustomEmoji'
+      attributes['shortcode']
+    when 'DomainBlock', 'EmailDomainBlock'
+      link_to attributes['domain'], "https://#{attributes['domain']}"
+    when 'Status'
+      tmp_status = Status.new(attributes)
+      link_to tmp_status.account.acct, TagManager.instance.url_for(tmp_status)
+    end
+  end
+
+  def relevant_log_changes(log)
+    if log.target_type == 'CustomEmoji' && [:enable, :disable, :destroy].include?(log.action)
+      log.recorded_changes.slice('domain')
+    elsif log.target_type == 'CustomEmoji' && log.action == :update
+      log.recorded_changes.slice('domain', 'visible_in_picker')
+    elsif log.target_type == 'User' && [:promote, :demote].include?(log.action)
+      log.recorded_changes.slice('moderator', 'admin')
+    elsif log.target_type == 'DomainBlock'
+      log.recorded_changes.slice('severity', 'reject_media')
+    elsif log.target_type == 'Status' && log.action == :update
+      log.recorded_changes.slice('sensitive')
+    end
+  end
+
+  def log_extra_attributes(hash)
+    safe_join(hash.to_a.map { |key, value| safe_join([content_tag(:span, key, class: 'diff-key'), '=', log_change(value)]) }, ' ')
+  end
+
+  def log_change(val)
+    return content_tag(:span, val, class: 'diff-neutral') unless val.is_a?(Array)
+    safe_join([content_tag(:span, val.first, class: 'diff-old'), content_tag(:span, val.last, class: 'diff-new')], '→')
+  end
+
+  def icon_for_log(log)
+    case log.target_type
+    when 'Account', 'User'
+      'user'
+    when 'CustomEmoji'
+      'file'
+    when 'Report'
+      'flag'
+    when 'DomainBlock'
+      'lock'
+    when 'EmailDomainBlock'
+      'envelope'
+    when 'Status'
+      'pencil'
+    end
+  end
+
+  def class_for_log_icon(log)
+    case log.action
+    when :enable, :unsuspend, :unsilence, :confirm, :promote, :resolve
+      'positive'
+    when :create
+      opposite_verbs?(log) ? 'negative' : 'positive'
+    when :update, :reset_password, :disable_2fa, :memorialize
+      'neutral'
+    when :demote, :silence, :disable, :suspend
+      'negative'
+    when :destroy
+      opposite_verbs?(log) ? 'positive' : 'negative'
+    else
+      ''
+    end
+  end
+
+  private
+
+  def opposite_verbs?(log)
+    %w(DomainBlock EmailDomainBlock).include?(log.target_type)
+  end
+end