#!/usr/bin/perl
#
# Generates members of a mailing list for ELIXIR mailman
#
use strict;
use warnings;
use perunServicesInit;
use perunServicesUtils;
use Text::Unidecode;
use POSIX qw/strftime/;

local $::SERVICE_NAME = "mailman_elixir";
local $::PROTOCOL_VERSION = "3.1.0";
my $SCRIPT_VERSION = "3.2.1";

perunServicesInit::init;
my $DIRECTORY = perunServicesInit::getDirectory;
my $data = perunServicesInit::getHashedHierarchicalData;

#Constants
our $A_USER_NAME;                        *A_USER_NAME =                       \'urn:perun:user:attribute-def:core:displayName';
our $A_USER_MAIL;                        *A_USER_MAIL =                       \'urn:perun:user:attribute-def:def:preferredMail';
our $A_USER_STATUS;                      *A_USER_STATUS =                     \'urn:perun:member:attribute-def:core:status';

our $A_RESOURCE_MAILING_LIST_NAME;       *A_RESOURCE_MAILING_LIST_NAME =      \'urn:perun:resource:attribute-def:def:mailingListName';
our $A_RESOURCE_MAILING_LIST_MANAGER_MAIL;       *A_RESOURCE_MAILING_LIST_MANAGER_MAIL =      \'urn:perun:resource:attribute-def:def:mailingListManagerMail';



my $mailinglistStruc = {};  # $mailinglistStruc->{"mailing list name"}->{"user's e-mail"}->{A_USER_*}
my $mailinglistAdminMailStruc = {};  # $mailinglistAdminMailStruc->{"mailing list name"}->{"admin's e-mail"}


my $mailinglistsDirectory = "$DIRECTORY/mailinglists";
mkdir $mailinglistsDirectory or die "Can't mkdir $mailinglistsDirectory: $!";


my @membersAttributes;
foreach my $resourceId ($data->getResourceIds()) {

	my $listName = $data->getResourceAttributeValue(resource => $resourceId, attrName => $A_RESOURCE_MAILING_LIST_NAME);
	my $adminMail = $data->getResourceAttributeValue(resource => $resourceId, attrName => $A_RESOURCE_MAILING_LIST_MANAGER_MAIL);

	# Store the admin's mail
	$mailinglistAdminMailStruc->{$listName} = $adminMail;

	# Init mailinglistStruct with the listName
	$mailinglistStruc->{$listName} = {};

	foreach my $memberId ($data->getMemberIdsForResource(resource => $resourceId)) {

		my $memberStatus = $data->getMemberAttributeValue(member => $memberId, attrName => $A_USER_STATUS);
		my $userMail = $data->getUserAttributeValue(member => $memberId, attrName => $A_USER_MAIL);
		my $userName = $data->getUserAttributeValue(member => $memberId, attrName => $A_USER_NAME);

		#list only VALID members
		next unless($memberStatus eq "VALID");

		$mailinglistStruc->{$listName}->{$userMail}->{$A_USER_NAME} = $userName;
	}
}


for my $listName (keys %$mailinglistStruc) {
    my $fileName = "$mailinglistsDirectory/$listName";
    open FILE,">$fileName" or die "Cannot open $fileName: $! \n";
    binmode FILE, ":utf8";

    # Check if the list is empty, if yes, don't print anything
    my $count = keys %{$mailinglistStruc->{$listName}};
    if ($count > 0) {
       # As a first line, print header
       print FILE "#MANAGERS_MAIL=";
       if ($mailinglistAdminMailStruc->{$listName}) {
          print FILE $mailinglistAdminMailStruc->{$listName};
       }
       print FILE "\n";

       for my $mail (sort keys %{$mailinglistStruc->{$listName}}) {
         print FILE '"', unidecode($mailinglistStruc->{$listName}->{$mail}->{$A_USER_NAME});
         print FILE '" <', $mail, ">\n";
       }
    }

    close FILE or die $!;
}

perunServicesInit::finalize;
