service object to write out config files

app/services/ftp_config.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+class FtpConfig
+  def build_password_list accounts
+    File.open(password_file, "w+") do |file|
+      Array(accounts).each do |account|
+        file.write "#{account.username}:#{hash_password(account.password)}"
+      end
+    end
+  end
+
+  def build_user_configs accounts
+    Array(accounts).each do |account|
+      File.open("#{config_path}#{account.username}", "w+") do |file|
+        file.write "local_root=#{ftp_root}#{account.home_folder}"
+      end
+    end
+  end
+
+  private
+
+    def password_file
+      AppConfig.htpasswd
+    end
+
+    def config_path
+      AppConfig.ftpusers
+    end
+
+    def ftp_root
+      AppConfig.ftproot
+    end
+
+    def hash_password password
+      `openssl passwd -1 -noverify -quiet #{password}`
+    end
+end