package Sisimai::Reason::NotAccept;
use feature ':5.10';
use strict;
use warnings;

sub text  { 'notaccept' }
sub description { 'Delivery failed due to a destination mail server does not accept any email' }
sub match {
    # Try to match that the given text and regular expressions
    # @param    [String] argv1  String to be matched with regular expressions
    # @return   [Integer]       0: Did not match
    #                           1: Matched
    # @since v4.0.0
    my $class = shift;
    my $argv1 = shift // return undef;

    # Destination mail server does not accept any message
    my $regex = qr{(?:
         name[ ]server:[ ][.]:[ ]host[ ]not[ ]found # Sendmail
        |55[46][ ]smtp[ ]protocol[ ]returned[ ]a[ ]permanent[ ]error
        )
    }x;

    return 1 if $argv1 =~ $regex;
    return 0;
}

sub true {
    # Remote host does not accept any message
    # @param    [Sisimai::Data] argvs   Object to be detected the reason
    # @return   [Integer]               1: Not accept
    #                                   0: Accept
    # @since v4.0.0
    # @see http://www.ietf.org/rfc/rfc2822.txt
    my $class = shift;
    my $argvs = shift // return undef;

    return undef unless ref $argvs eq 'Sisimai::Data';
    return 1 if $argvs->reason eq 'notaccept';

    # SMTP Reply Code is 521, 554 or 556
    return 1 if $argvs->replycode =~ /\A(?:521|554|556)\z/;
    return 0 unless $argvs->smtpcommand eq 'MAIL';
    return 1 if __PACKAGE__->match(lc $argvs->diagnosticcode);
    return 0;
}

1;
__END__

=encoding utf-8

=head1 NAME

Sisimai::Reason::NotAccept - Bounce reason is C<notaccept> or not.

=head1 SYNOPSIS

    use Sisimai::Reason::NotAccept;
    print Sisimai::Reason::NotAccept->match('domain does not exist:');   # 1

=head1 DESCRIPTION

Sisimai::Reason::NotAccept checks the bounce reason is C<notaccept> or not.
This class is called only Sisimai::Reason class.

This is the error that a destination mail server does ( or can ) not accept any
email. In many case, the server is high load or under the maintenance.  Sisimai
will set C<notaccept> to the reason of email bounce if the value of Status:
field in a bounce email is C<5.3.2> or the value of SMTP reply code is 556.

=head1 CLASS METHODS

=head2 C<B<text()>>

C<text()> returns string: C<notaccept>.

    print Sisimai::Reason::NotAccept->text;  # notaccept

=head2 C<B<match(I<string>)>>

C<match()> returns 1 if the argument matched with patterns defined in this class.

    print Sisimai::Reason::NotAccept->match('domain does not exist:');   # 1

=head2 C<B<true(I<Sisimai::Data>)>>

C<true()> returns 1 if the bounce reason is C<notaccept>. The argument must be
Sisimai::Data object and this method is called only from Sisimai::Reason class.

=head1 AUTHOR

azumakuniyuki

=head1 COPYRIGHT

Copyright (C) 2014-2016,2018 azumakuniyuki, All rights reserved.

=head1 LICENSE

This software is distributed under The BSD 2-Clause License.

=cut
