File Coverage

blib/lib/Email/Send.pm

Criterion	Covered	Total	%
statement	87	87	100.0
branch	38	40	95.0
condition	2	2	100.0
subroutine	20	20	100.0
pod	4	4	100.0
total	151	153	98.6

package Email::Send;
use strict;

use vars qw[$VERSION];
$VERSION   = '2.200';

use Email::Simple 1.92;
use Module::Pluggable 2.97
  search_path => 'Email::Send',
  except      => $Email::Send::__plugin_exclusion;
BEGIN {
  local $Return::Value::NO_CLUCK = 1;
  require Return::Value;
  Return::Value->import;
}
use Scalar::Util 1.02 ();

=head1 NAME

Email::Send - Simply Sending Email

=head1 WAIT!  ACHTUNG!

Email::Send is going away... well, not really going away, but it's being
officially marked "out of favor."  It has API design problems that make it hard
to usefully extend and rather than try to deprecate features and slowly ease in
a new interface, we've released Email::SendB which fixes these problems and
others.  As of today, 2008-12-19, Email::Sender is young, but it's fairly
well-tested.  Please consider using it instead for any new work.

=head1 SYNOPSIS

  use Email::Send;

  my $message = <<'__MESSAGE__';
  To: [e-mail]
  From: [e-mail]
  Subject: Hello there folks

  How are you? Enjoy!
  __MESSAGE__

  my $sender = Email::Send->new({mailer => 'SMTP'});
  $sender->mailer_args([Host => 'smtp.example.com']);
  $sender->send($message);

  # more complex
  my $bulk = Email::Send->new;
  for ( qw[SMTP Sendmail Qmail] ) {
      $bulk->mailer($_) and last if $bulk->mailer_available($_);
  }

  $bulk->message_modifier(sub {
      my ($sender, $message, $to) = @_;
      $message->header_set(To => qq[$to\@geeknest.com])
  });

  my @to = qw[casey chastity evelina casey_jr marshall];
  my $rv = $bulk->send($message, $_) for @to;

=head1 DESCRIPTION

This module provides a very simple, very clean, very specific interface
to multiple Email mailers. The goal of this software is to be small
and simple, easy to use, and easy to extend.

=head2 Constructors

=over 4

=item new

  my $sender = Email::Send->new({
      mailer      => 'NNTP',
      mailer_args => [ Host => 'nntp.example.com' ],
  });

Create a new mailer object. This method can take parameters for any of the data
properties of this module. Those data properties, which have their own accessors,
are listed under L<"Properties">.

=back

=head2 Properties

=over 4

=item mailer

The mailing system you'd like to use for sending messages with this object.
This is not defined by default. If you don't specify a mailer, all available
plugins will be tried when the C method is called until one succeeds.

=item mailer_args

Arguments passed into the mailing system you're using.

=item message_modifier

If defined, this callback is invoked every time the C method is called
on an object. The mailer object will be passed as the first argument. Second,
the actual C object for a message will be passed. Finally, any
additional arguments passed to C will be passed to this method in the
order they were received.

This is useful if you are sending in bulk.

=back

=cut

sub new {
    my ($class, $args) = @_;
    $args->{mailer_args} ||= [];
    my %plugins = map {
        my ($short_name) = /^Email::Send::(.+)/;
        ($short_name, $_);
    } $class->plugins;
    $args->{_plugin_list} = \%plugins;
    return bless $args => $class;
}

BEGIN {
  for my $field (qw(mailer mailer_args message_modifier _plugin_list)) {
    my $code = sub {
      return $_[0]->{$field} unless @_ > 1;
      my $self = shift;
      $self->{$field} = (@_ == 1 ? $_[0] : [@_]);
    };

    no strict 'refs';
    *$field = $code;
  }
}

=head2 METHODS

=over 4

=item send

  my $result = $sender->send($message, @modifier_args);

Send a message using the predetermined mailer and mailer arguments. If you
have defined a C it will be called prior to sending.

The first argument you pass to send is an email message. It must be in some
format that C can understand. If you don't have
C installed then sending as plain text or an C
object will do.

Any remaining arguments will be passed directly into your defined
C.

=cut

sub send {
    goto &_send_function unless eval { $_[0]->isa('Email::Send') };
    my ($self, $message, @args) = @_;

    my $simple = $self->_objectify_message($message);
    return failure "No message found." unless $simple;

    $self->message_modifier->(
        $self, $simple,
        @args,
    ) if $self->message_modifier;

    if ( $self->mailer ) {
        return $self->_send_it($self->mailer, $simple);
    }

    return $self->_try_all($simple);
}

=item all_mailers

  my @available = $sender->all_mailers;

Returns a list of available mailers. These are mailers that are
installed on your computer and register themselves as available.

=cut

sub all_mailers {
    my ($self) = @_;
    my @mailers;
    for ( keys %{$self->_plugin_list} ) {
        push @mailers, $_ if $self->mailer_available($_);
    }
    return @mailers;
}

=item mailer_available

  # is SMTP over SSL avaialble?
  $sender->mailer('SMTP')
    if $sender->mailer_available('SMTP', ssl => 1);

Given the name of a mailer, such as C, determine if it is
available. Any additional arguments passed to this method are passed
directly to the C method of the mailer being queried.

=back

=cut

sub mailer_available {
  my ($self, $mailer, @args) = @_;

  my $invocant = $self->_mailer_invocant($mailer);

  return $invocant unless $invocant;

  $invocant->can('is_available')
    or return failure "Mailer $mailer doesn't report availability.";

  my $test = $invocant->is_available(@args);
  return $test unless $test;
  return success;
}

sub _objectify_message {
    my ($self, $message) = @_;

    return undef unless defined $message;
    return $message if UNIVERSAL::isa($message, 'Email::Simple');
    return Email::Simple->new($message) unless ref($message);
    return Email::Abstract->cast($message => 'Email::Simple')
      if eval { require Email::Abstract };
    return undef;
}

sub _mailer_invocant {
  my ($self, $mailer) = @_;

  return $mailer if Scalar::Util::blessed($mailer);

  # is the mailer a plugin given by short name?
  my $package = exists $self->_plugin_list->{$mailer}
               ? $self->_plugin_list->{$mailer}
               : $mailer;

  eval "require $package" or return failure "$@";

  return $package;
}

sub _send_it {
    my ($self, $mailer, $message) = @_;
    my $test = $self->mailer_available($mailer);
    return $test unless $test;

    my $invocant = $self->_mailer_invocant($mailer);

    return $invocant->send($message, @{$self->mailer_args});
}

sub _try_all {
    my ($self, $simple) = @_;
    foreach ( $self->all_mailers ) {
      next if $_ eq 'Email::Send::Test';
      my $sent = $self->_send_it($_, $simple);
      return $sent if $sent;
    }
    return failure "Unable to send message.";
}

# Classic Interface.

sub import {
    no strict 'refs';
    *{(caller)[0] . '::send'} = __PACKAGE__->can('_send_function');
}

sub _send_function {
    my ($mailer, $message, @args) = @_;
    __PACKAGE__->new({
        mailer => $mailer,
        mailer_args => \@args,
    })->send($message);
}

1;

__END__