Add zonefile generation procedure

app/models/country.rb

@@ -2,4 +2,10 @@ class Country < ActiveRecord::Base
   def to_s
     name
   end
+
+  class << self
+    def estonia
+      find_by(iso: 'EE')
+    end
+  end
 end

app/models/domain.rb

@@ -301,35 +301,6 @@ class Domain < ActiveRecord::Base
     end
   end
 
-  def generate_zonefile
-    zf = Zonefile.new
-    zf.ttl = '3600'
-    zf.origin = "#{name}."
-    ns = nameservers.first
-    zf.soa[:primary_ns] = "#{ns.hostname}."
-    zf.soa[:email] = 'hostmaster.internet.ee'
-    zf.soa[:origin] = "#{name}."
-    zf.soa[:refresh] = '10800'
-    zf.soa[:retry] = '3600'
-    zf.soa[:expire] = '604800'
-    zf.soa[:minimumTTL] = '3600'
-
-    nameservers.each do |x|
-      zf.ns << { name: "#{name}.", class: 'IN', host: "#{x.hostname}." }
-    end
-
-    dnskeys.each do |x|
-      zf.ds << { name: "#{name}.", ttl: '86400', class: 'IN', key_tag: x.ds_key_tag, algorithm: x.ds_alg,
-                 digest_type: x.ds_digest_type, digest: x.ds_digest }
-
-      zf.dnskey << { name: "#{name}.", ttl: '86400', class: 'IN', flag: x.flags,
-                     protocol: x.protocol, algorithm: x.alg, public_key: x.public_key }
-    end
-
-    zf.new_serial
-    zf.generate
-  end
-
   class << self
     def convert_period_to_time(period, unit)
       return period.to_i.days if unit == 'd'

app/models/zonefile.rb

@@ -0,0 +1,3 @@
+class Zonefile < ActiveRecord::Base
+
+end

app/models/zonefile_setting.rb

@@ -0,0 +1,7 @@
+class ZonefileSetting < ActiveRecord::Base
+  validates :origin, :ttl, :refresh, :retry, :expire, :minimum_ttl, :email, presence: true
+  validates :ttl, :refresh, :retry, :expire, :minimum_ttl, numericality: { only_integer: true }
+  def to_s
+    origin
+  end
+end