Add script to display and migrate environment variables to SiteConfig (#4865) [deploy]

lib/tasks/temporary/migrate_environment_variables_site_config.rake

@@ -0,0 +1,58 @@
+# Migrate environment variables to SiteConfig
+
+ENV_VARS_TO_SITE_CONFIG = {
+  DEVTO_USER_ID: :staff_user_id,
+  DEFAULT_SITE_EMAIL: :default_site_email,
+  SITE_TWITTER_HANDLE: :social_networks_handle,
+
+  MAIN_SOCIAL_IMAGE: :main_social_image,
+  FAVICON_URL: :favicon_url,
+  LOGO_SVG: :logo_svg,
+
+  RATE_LIMIT_FOLLOW_COUNT_DAILY: :rate_limit_follow_count_daily,
+
+  GA_VIEW_ID: :ga_view_id,
+  GA_FETCH_RATE: :ga_fetch_rate,
+
+  MAILCHIMP_NEWSLETTER_ID: :mailchimp_newsletter_id,
+  MAILCHIMP_SUSTAINING_MEMBERS_ID: :mailchimp_sustaining_members_id,
+  MAILCHIMP_TAG_MODERATORS_ID: :mailchimp_tag_moderators_id,
+  MAILCHIMP_COMMUNITY_MODERATORS_ID: :mailchimp_community_moderators_id,
+
+  PERIODIC_EMAIL_DIGEST_MAX: :periodic_email_digest_max,
+  PERIODIC_EMAIL_DIGEST_MIN: :periodic_email_digest_min
+}.freeze
+
+def display_vars(env_var, config_var)
+  env_var_value = "ApplicationConfig[#{env_var}] = #{ApplicationConfig[env_var]}"
+  config_var_value = "SiteConfig.#{config_var} = #{SiteConfig.public_send(config_var)}"
+  Rails.logger.info([env_var_value, config_var_value].join(", "))
+end
+
+namespace :site_config do
+  desc "Display variables values"
+  task display_variables: :environment do
+    ENV_VARS_TO_SITE_CONFIG.each do |env_var, config_var|
+      display_vars(env_var, config_var)
+    end
+  end
+
+  desc "Copy non empty environment variables over to the site configuration"
+  task migrate_environment_variables: :environment do
+    ENV_VARS_TO_SITE_CONFIG.each do |env_var, config_var|
+      if ApplicationConfig[env_var].blank? || ApplicationConfig[env_var] == "Optional"
+        Rails.logger.info("Skipping #{env_var} because it is empty...")
+        next
+      end
+
+      Rails.logger.info("Copying ApplicationConfig[#{env_var}] to SiteConfig.#{config_var}...")
+      SiteConfig.public_send("#{config_var}=", ApplicationConfig[env_var])
+    end
+
+    SiteConfig.clear_cache
+
+    ENV_VARS_TO_SITE_CONFIG.each do |env_var, config_var|
+      display_vars(env_var, config_var)
+    end
+  end
+end