feat: add migration to fix image signed keys (#7076)

db/migrate/20230515051424_update_article_image_keys.rb

@@ -0,0 +1,55 @@
+class ArticleKeyConverter
+  def initialize(article)
+    @article = article
+  end
+
+  def process
+    new_content = replace(@article.content)
+    @article.update(content: new_content)
+  end
+
+  private
+
+  def convert_key(id)
+    verifier_name = 'ActiveStorage'
+    key_generator =  ActiveSupport::KeyGenerator.new(Rails.application.secrets.secret_key_base, iterations: 1000,
+                                                                                                hash_digest_class: OpenSSL::Digest::SHA1)
+    key_generator = ActiveSupport::CachingKeyGenerator.new(key_generator)
+    secret = key_generator.generate_key(verifier_name.to_s)
+    verifier = ActiveSupport::MessageVerifier.new(secret)
+
+    begin
+      ActiveStorage::Blob.find(verifier.verify(id, purpose: :blob_id))
+                         .try(:signed_id)
+    rescue StandardError
+      nil
+    end
+  end
+
+  def replace(text)
+    keys = get_keys(text)
+    keys.each do |key|
+      new_key = convert_key(key)
+      text = text.gsub(key, new_key) if new_key
+    end
+    text
+  end
+
+  def get_keys(text)
+    uris = text.scan(URI::DEFAULT_PARSER.make_regexp).flatten.select do |x|
+      x.to_s.include?('rails/active_storage')
+    end
+
+    uris.map { |x| x.split('/')[-2] }
+  end
+end
+
+class UpdateArticleImageKeys < ActiveRecord::Migration[7.0]
+  def change
+    # Iterate through all articles
+    Article.find_each do |article|
+      # Run the ArticleKeyConverter for each one
+      ArticleKeyConverter.new(article).process
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_05_10_113208) do
+ActiveRecord::Schema[7.0].define(version: 2023_05_15_051424) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_stat_statements"
   enable_extension "pg_trgm"