File Coverage

lib/Web/Components/Role/Email.pm

Criterion	Covered	Total	%
statement	49	49	100.0
branch	3	4	75.0
condition			n/a
subroutine	17	17	100.0
pod	2	2	100.0
total	71	72	98.6

package Web::Components::Role::Email;

use 5.010001;
use namespace::autoclean;
use version; our $VERSION = qv( sprintf '0.3.%d', q$Rev: 1 $ =~ /\d+/gmx );

use Email::MIME;
use Encode                     qw( encode );
use File::DataClass::Constants qw( EXCEPTION_CLASS TRUE );
use File::DataClass::Functions qw( ensure_class_loaded is_hashref );
use File::DataClass::IO;
use MIME::Types;
use Scalar::Util               qw( blessed weaken );
use Try::Tiny;
use Unexpected::Functions      qw( Unspecified throw );
use Moo::Role;

requires qw( config log );

with 'Web::Components::Role::TT';

# Private subroutines
my $_add_attachments = sub {
   my ($args, $email) = @_;

   my $types = MIME::Types->new( only_complete => TRUE );
   my $part  = Email::MIME->create
      ( attributes => $email->{attributes}, body => delete $email->{body} );

   $email->{parts} = [ $part ];

   for my $name (sort keys %{ $args->{attachments} }) {
      my $path = io( $args->{attachments}->{ $name } )->binary->lock;
      my $mime = $types->mimeTypeOf( my $file = $path->basename );
      my $attr = { content_type => $mime->type,
                   encoding     => $mime->encoding,
                   filename     => $file,
                   name         => $name };

      $part = Email::MIME->create( attributes => $attr, body => $path->all );
      push @{ $email->{parts} }, $part;
   }

   return;
};

my $_make_f = sub {
   my ($obj, $f) = @_; weaken $obj; return sub { $obj->$f( @_ ) };
};

my $_stash_functions = sub {
   my ($self, $obj, $stash, $funcs) = @_; defined $obj or return;

   $funcs //= []; $funcs->[ 0 ] or push @{ $funcs }, 'loc';

   for my $f (@{ $funcs }) { $stash->{ $f } = $_make_f->( $obj, $f ) }

   return;
};

my $_get_email_body = sub {
   my ($self, $args) = @_; my $obj = delete $args->{subprovider};

   exists $args->{body} and defined $args->{body} and return $args->{body};

   $args->{template} or throw Unspecified, [ 'template' ];

   my $stash = $args->{stash} //= {}; $stash->{page} //= {};

   $stash->{page}->{layout} //= $args->{template};

   $_stash_functions->( $self, $obj, $stash, $args->{functions} );

   return $self->render_template( $stash );
};

my $_create_email = sub {
   my ($self, $args) = @_; $args->{email} and return $args->{email};

   my $conf     = $self->config;
   my $attr     = $conf->can( 'email_attr' ) ? $conf->email_attr : {};
   my $email    = { attributes => { %{ $attr }, %{ $args->{attributes} // {}}}};
   my $from     = $args->{from} or throw Unspecified, [ 'from' ];
   my $to       = $args->{to  } or throw Unspecified, [ 'to'   ];
   my $encoding = $email->{attributes}->{charset};
   my $subject  = $args->{subject} // 'No subject';

   try   { $subject = encode( 'MIME-Header', $subject, TRUE ) }
   catch { throw 'Cannot encode subject as MIME-Header: [_1]', [ $_ ] };

   $email->{header} = [ From => $from, To => $to, Subject => $subject ];
   $email->{body  } = $_get_email_body->( $self, $args );

   try   {
      $encoding and $email->{body} = encode( $encoding, $email->{body}, TRUE );
   }
   catch { throw 'Cannot encode body as [_1]: [_2]', [ $encoding, $_ ] };

   exists $args->{attachments} and $_add_attachments->( $args, $email );

   return Email::MIME->create( %{ $email } );
};

my $_transport_email = sub {
   my ($self, $args) = @_; $args->{email} or throw Unspecified, [ 'email' ];

   my $attr = {}; my $conf = $self->config;

   $conf->can( 'transport_attr' ) and $attr = { %{ $conf->transport_attr } };

   exists $args->{transport_attr}
      and $attr = { %{ $attr }, %{ $args->{transport_attr} } };
   exists $args->{host} and $attr->{host} = $args->{host};

   $attr->{host} //= 'localhost'; my $class = delete $attr->{class};

   $class = $args->{mailer} // $class // 'SMTP';

   if ('+' eq substr $class, 0, 1) { $class = substr $class, 1 }
   else { $class = "Email::Sender::Transport::${class}" }

   ensure_class_loaded $class;

   my $mailer    = $class->new( $attr );
   my $send_args = { from => $args->{from}, to => $args->{to} };
   my $result;

   try   { $result = $mailer->send( $args->{email}, $send_args ) }
   catch { throw $_ };

   $result->can( 'failure' ) and throw $result->message;

   (blessed $result and $result->isa( 'Email::Sender::Success' ))
      or throw 'Send failed: [_1]', [ $result ];

   return ($result->can( 'message' ) and defined $result->message
           and length $result->message) ? $result->message : 'OK Message sent';
};

# Public methods
sub send_email {
   my ($self, @args) = @_;

   defined $args[ 0 ] or throw Unspecified, [ 'email args' ];

   my $args = (is_hashref $args[ 0 ]) ? $args[ 0 ] : { @args };

   $args->{email} = $_create_email->( $self, $args );

   return $_transport_email->( $self, $args );
}

sub try_to_send_email {
   my ($self, @args) = @_; my $res;

   try   { $res = $self->send_email( @args ) }
   catch { $self->log->error( $res = $_ ) };

   return $res;
}

1;

__END__