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package RT::Action::Notify;

use strict;
use warnings;

use base qw(RT::Action::SendEmail);

use Email::Address;
use Regexp::Common;

=head2 Prepare

Set up the relevant recipients, then call our parent.

=cut


sub Prepare {
    my $self = shift;
    $self->SetRecipients();
    $self->SUPER::Prepare();
}

=head2 SetRecipients

Sets the recipients of this message to Owner, Requestor, AdminCc, Cc or All.
Explicitly B<does not> notify the creator of the transaction by default.

=cut

sub SetRecipients {
    my $self = shift;

    my $ticket = $self->TicketObj;

    my $arg = $self->Argument;

    my ( @To, @PseudoTo, @Cc, @Bcc );

    my %args = map { $_ => 1 } $self->SplitArgument;

    if ( $args{All} ) {
        $args{$_} ||= 1 for qw/Owner Requestor AdminCc Cc/;
    }

    if ( $args{Requestor} ) {
        push @To, $ticket->Requestors->MemberEmailAddresses;
    }

    # custom role syntax:   gives:
    #   name                  (role name,  Cc)
    #   RT::CustomRole-#      (role with id, Cc)
    #   name/To               (role name,  To)
    #   RT::CustomRole-#/To   (role with id, To)
    #   name/Cc               (role name,  Cc)
    #   RT::CustomRole-#/Cc   (role with id, Cc)
    #   name/Bcc              (role name,  Bcc)
    #   RT::CustomRole-#/Bcc  (role with id, Bcc)

    # this has to happen early because adding To addresses affects how Cc
    # is handled

    for my $item ( sort keys %args ) {
        next if $item =~ /^(?:All|Owner|Requestor|AdminCc|Cc|OtherRecipients|AlwaysNotifyActor|NeverNotifyActor)$/;
        my ( $name, $type ) = ( $item =~ m{^(.+?)(?:/(To|Cc|Bcc))?$} );
        next unless $name;

        my $role;
        if ( $name =~ /^RT::CustomRole-(\d+)$/ ) {
            my $id = $1;
            $role = RT::CustomRole->new( $self->CurrentUser );
            $role->Load( $id );
        }
        else {
            my $roles = RT::CustomRoles->new( $self->CurrentUser );
            $roles->LimitToLookupType( RT::Ticket->CustomFieldLookupType );
            $roles->Limit( FIELD => 'Name', VALUE => $name, CASESENSITIVE => 0 );

            # custom roles are named uniquely, but just in case there are
            # multiple matches, bail out as we don't know which one to use
            $role = $roles->First;
            if ( $role ) {
                $role = undef if $roles->Next;
            }
        }

        unless ($role && $role->id) {
            $RT::Logger->debug("Unable to load custom role from scrip action argument '$item'");
            next;
        }

        my @role_members = (
            $ticket->RoleGroup($role->GroupType)->MemberEmailAddresses,
            $ticket->QueueObj->RoleGroup($role->GroupType)->MemberEmailAddresses,
        );

        if (!$type || $type eq 'Cc') {
            push @Cc, @role_members;
        }
        elsif ($type eq 'Bcc') {
            push @Bcc, @role_members;
        }
        elsif ($type eq 'To') {
            push @To, @role_members;
        }
    }

    if ( $args{Cc} ) {

        #If we have a To, make the Ccs, Ccs, otherwise, promote them to To
        if (@To) {
            push ( @Cc, $ticket->Cc->MemberEmailAddresses );
            push ( @Cc, $ticket->QueueObj->Cc->MemberEmailAddresses  );
        }
        else {
            push ( @Cc, $ticket->Cc->MemberEmailAddresses  );
            push ( @To, $ticket->QueueObj->Cc->MemberEmailAddresses  );
        }
    }

    if (   $args{Owner}
        && $ticket->OwnerObj->id != RT->Nobody->id
        && $ticket->OwnerObj->EmailAddress
        && not $ticket->OwnerObj->Disabled
    ) {
        # If we're not sending to Ccs or requestors,
        # then the Owner can be the To.
        if (@To) {
            push ( @Bcc, $ticket->OwnerObj->EmailAddress );
        }
        else {
            push ( @To, $ticket->OwnerObj->EmailAddress );
        }

    }

    if ( $args{AdminCc} ) {
        push ( @Bcc, $ticket->AdminCc->MemberEmailAddresses  );
        push ( @Bcc, $ticket->QueueObj->AdminCc->MemberEmailAddresses  );
    }

    if ( RT->Config->Get('UseFriendlyToLine') ) {
        unless (@To) {
            push @PseudoTo,
                sprintf RT->Config->Get('FriendlyToLineFormat'), $arg, $ticket->id;
        }
    }

    @{ $self->{'To'} }       = @To;
    @{ $self->{'Cc'} }       = @Cc;
    @{ $self->{'Bcc'} }      = @Bcc;
    @{ $self->{'PseudoTo'} } = @PseudoTo;

    if ( $args{OtherRecipients} ) {
        if ( my $attachment = $self->TransactionObj->Attachments->First ) {
            push @{ $self->{'NoSquelch'}{'Cc'} ||= [] }, map $_->address,
                Email::Address->parse( $attachment->GetHeader('RT-Send-Cc') );
            push @{ $self->{'NoSquelch'}{'Bcc'} ||= [] }, map $_->address,
                Email::Address->parse( $attachment->GetHeader('RT-Send-Bcc') );
        }
    }
}

=head2 RemoveInappropriateRecipients

Remove transaction creator as appropriate for the NotifyActor setting.

To send email to the selected recipients regardless of RT's NotifyActor
configuration, include AlwaysNotifyActor in the list of arguments. Or to
always suppress email to the selected recipients regardless of RT's
NotifyActor configuration, include NeverNotifyActor in the list of arguments.

=cut

our $ALWAYS_NOTIFY_ACTOR = 0;

sub RemoveInappropriateRecipients {
    my $self = shift;

    my $creatorObj = $self->TransactionObj->CreatorObj;
    my $creator = $creatorObj->EmailAddress() || '';
    my $TransactionCurrentUser = RT::CurrentUser->new;
    $TransactionCurrentUser->LoadByName($creatorObj->Name);

    my %args = map { $_ => 1 } $self->SplitArgument;

    $self->RecipientFilter(
        Callback => sub {
            return unless lc $_[0] eq lc $creator;
            return "not sending to $creator, creator of the transaction, due to NotifyActor setting";
        },
    ) if $args{NeverNotifyActor} ||
         (!RT->Config->Get('NotifyActor',$TransactionCurrentUser)
         && !$args{AlwaysNotifyActor}) && !$ALWAYS_NOTIFY_ACTOR;

    $self->SUPER::RemoveInappropriateRecipients();
}


=head2 SplitArgument

Split comma separated argument. Like CSV, it also supports quoted
values, so values like "'foo, bar'" is treated like a single value.

Return the list of the split values.

=cut

sub SplitArgument {
    my $self = shift;
    my $arg  = shift // $self->Argument;

    return unless defined $arg && length $arg;

    $arg =~ s!^\s+!!;
    $arg =~ s!\s+$!!;

    my @args;
    while ( $arg =~ s/^($RE{quoted}|[^,]+)(?:,\s*|$)//g ) {
        my $item = $1;
        if ( $item =~ /^(['"])(.*)\1/ ) {
            next unless length $2;
            push @args, $2;
        }
        else {
            push @args, $item;
        }
    }
    return @args;
}

RT::Base->_ImportOverlays();

1;
