package Mod::MailTransport;
#
# SPDX-License-Identifier: AGPL-3.0-or-later
# Copyright (c) Rainer Gümpelein, TeilRad GmbH
#
# new emailing module
#
#perl -cw src/Mod/MailTransport.pm
#use lib "/var/www/copri4/shareeapp-operator/src";
#
use strict;
use warnings;
use POSIX;
use CGI ':standard';
use Email::MIME;
use IO::All;
use Email::Sender::Simple qw(sendmail);
use Net::SMTP;
use Try::Tiny;
use Config::General;
use Sys::Hostname;
my $hostname = hostname;

use Lib::Config;
use Mod::Basework;
use Mod::DBtank;
use Data::Dumper;

sub new {
 my $class = shift;
 my $self = {};
 bless($self,$class);
 return $self;
}

my $q = new CGI;
my $cf = new Config;
my $bw = new Basework;
my $dbt = new DBtank;

my $mailx_file = "/var/www/copri4/shareeconf/mailx.cfg";
my $conf = Config::General->new($mailx_file);
my %mailxconf = $conf->getall;

sub send_mail(){
  my $self = shift;
  my $sendref = shift;
  my $now_dt = strftime "%Y-%m-%d %H:%M:%S", localtime;

  my $mail_from = $sendref->{mail_from} || $mailxconf{mailx_default}->{mail_from};
  my $mail_to = $sendref->{mail_to} || $mailxconf{mailx_default}->{mail_to};
  my $subject = $sendref->{subject} || "subject fails";
  my $filename = $sendref->{filename} || "";
  my $message = $sendref->{message} || "Failure, no message\n";
  #If caller use utf8, message is encoded as utf-8
  #$message = Encode::encode('utf-8', Encode::decode('iso-8859-1', $message));

  #Special tink statisk, readdir with filename
  #$filename like "2018-12"
  my @files = ($filename);

  #disabled because of zipping
  #TODO, check what happens about Statistik-occubike_station_2019-1-konrad.csv 
  #Okay, send_mail breaks on verylong Statistik lines. CSV zipping is the solution
  #@files = $lb->read_dirfiles("$dbt->{copri_conf}->{basedir}/csv",$filename,"file","") if($filename =~ /\d+-\d+/);

  if($dbt->{copri_conf}->{stage} eq "test"){
  	$mail_to = $mailxconf{mailx_default}->{mail_to};
        $subject .= " * offline Test *";
  }

  $bw->log("Trying send_mail:$0",$sendref,"");


  if(ref($sendref) eq "HASH"){

        $mailxconf{mailx_default}->{sasl_password} = Encode::encode('iso-8859-1', Encode::decode('utf-8', $mailxconf{mailx_default}->{sasl_password}));
        my $transport = Email::Sender::Transport::SMTPS->new(
        host => "$mailxconf{mailx_default}->{mail_gateway}",
        ssl => 'ssl',
        port => 465,
        sasl_username => "$mailxconf{mailx_default}->{sasl_username}",
        sasl_password => "$mailxconf{mailx_default}->{sasl_password}",
        helo => "$mailxconf{mailx_default}->{mail_from}",
        debug => 1,
        );


     #multipart message 
     #Email::MIME !!!
     if(1==1){
     my @parts = ();

      my $parts_1 = (
         Email::MIME->create(
          attributes => {
              content_type => "text/plain",
              #disposition  => "attachment",
              encoding     => "quoted-printable",
              charset      => "UTF-8",
          },
          body_str => "$sendref->{message}",
         ),
      );
      push(@parts,$parts_1);


     foreach $filename (@files){
      if($filename){
	my $parts_0 = (
         Email::MIME->create(
          attributes => {
              filename     => "$filename",
              #content_type => "application/pdf",
              #content_type => "text/csv",
              content_type => "application/octet-stream",
		disposition => "attachment",
              encoding     => "quoted-printable",
              name         => "$filename",
          },
          body => io( "$dbt->{copri_conf}->{basedir}/csv/$filename" )->binary->all,
         ),
	);

  	$bw->log("Attachment:$dbt->{copri_conf}->{basedir}/csv/$filename","","");
	push(@parts,$parts_0);
       }
      }

      $message = Email::MIME->create(
          header_str => [ From => "$mail_from",
                      To => "$mail_to",
                      Subject => "$subject", ],
          parts      => [ @parts ],
      );
      #$message->charset_set( 'UTF-8' );
      print $message->as_string;
    }#if not Email::Mime
    else{

        $message = Email::Simple->create(
                header => [
                        From    => "$mail_from",
                        To      => "$mail_to",
                        Subject => "$subject",
                ],
                body => "$sendref->{message}",
        );
     }

    try {
        sendmail($message, { transport => $transport });
    } catch {
        $bw->log("FAILURE send_mail:$0",$sendref,"");
        warn "Error sending mail: $_";
    };
  }
  $bw->log("Success send_mail","","");


}#end mail_send

1;