Change: #647 NGワードの入力フォーム (#663)

* Change: #647 NGワードの入力フォーム

* Wip: 画面改造

* テストコード、画面

* Fix: 複数の問題

app/models/ng_word.rb

@@ -0,0 +1,87 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: ng_words
+#
+#  id         :bigint(8)        not null, primary key
+#  keyword    :string           not null
+#  regexp     :boolean          default(FALSE), not null
+#  stranger   :boolean          default(TRUE), not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+
+class NgWord < ApplicationRecord
+  attr_accessor :keywords, :regexps, :strangers
+
+  validate :check_regexp
+
+  class << self
+    def caches
+      Rails.cache.fetch('ng_words') { NgWord.where.not(id: 0).order(:keyword).to_a }
+    end
+
+    def save_from_hashes(rows)
+      unmatched = caches
+      matched = []
+
+      NgWord.transaction do
+        rows.filter { |item| item[:keyword].present? }.each do |item|
+          exists = unmatched.find { |i| i.keyword == item[:keyword] }
+
+          if exists.present?
+            unmatched.delete(exists)
+            matched << exists
+
+            next if exists.regexp == item[:regexp] && exists.stranger == item[:stranger]
+
+            exists.update!(regexp: item[:regexp], stranger: item[:stranger])
+          elsif matched.none? { |i| i.keyword == item[:keyword] }
+            NgWord.create!(
+              keyword: item[:keyword],
+              regexp: item[:regexp],
+              stranger: item[:stranger]
+            )
+          end
+        end
+
+        NgWord.destroy(unmatched.map(&:id))
+      end
+
+      true
+    end
+
+    def save_from_raws(rows)
+      regexps = rows['regexps'] || []
+      strangers = rows['strangers'] || []
+
+      hashes = (rows['keywords'] || []).zip(rows['temporary_ids'] || []).map do |item|
+        temp_id = item[1]
+        {
+          keyword: item[0],
+          regexp: regexps.include?(temp_id),
+          stranger: strangers.include?(temp_id),
+        }
+      end
+
+      save_from_hashes(hashes)
+    end
+  end
+
+  private
+
+  def invalidate_cache!
+    Rails.cache.delete('ng_words')
+  end
+
+  def check_regexp
+    return if keyword.blank? || !regexp
+
+    begin
+      Admin::NgWord.reject_with_custom_word?('Sample text', keyword)
+    rescue
+      raise Mastodon::ValidationError, I18n.t('admin.ng_words.test_error')
+    end
+  end
+end