# encoding: utf-8
# frozen_string_literal: true
# 
# = In-Reply-To Field
# 
# The In-Reply-To field inherits from StructuredField and handles the 
# In-Reply-To: header field in the email.
# 
# Sending in_reply_to to a mail message will instantiate a Mail::Field object that
# has a InReplyToField as its field type.  This includes all Mail::CommonMessageId
# module instance metods.
# 
# Note that, the #message_ids method will return an array of message IDs without the
# enclosing angle brackets which per RFC are not syntactically part of the message id.
# 
# Only one InReplyTo field can appear in a header, though it can have multiple
# Message IDs.
# 
# == Examples:
# 
#  mail = Mail.new
#  mail.in_reply_to = '<F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom>'
#  mail.in_reply_to    #=> '<F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom>'
#  mail[:in_reply_to]  #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::InReplyToField:0x180e1c4
#  mail['in_reply_to'] #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::InReplyToField:0x180e1c4
#  mail['In-Reply-To'] #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::InReplyToField:0x180e1c4
# 
#  mail[:in_reply_to].message_ids #=> ['F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom']
# 
require 'mail/fields/common/common_message_id'

module Mail
  class InReplyToField < StructuredField
    
    include Mail::CommonMessageId
    
    FIELD_NAME = 'in-reply-to'
    CAPITALIZED_FIELD = 'In-Reply-To'
    
    def initialize(value = nil, charset = 'utf-8')
      self.charset = charset
      value = value.join("\r\n\s") if value.is_a?(Array)
      super(CAPITALIZED_FIELD, strip_field(FIELD_NAME, value), charset)
      self.parse
      self
    end
    
    def encoded
      do_encode(CAPITALIZED_FIELD)
    end
    
    def decoded
      do_decode
    end
    
  end
end
