#
# Copyright 2016 Centreon (http://www.centreon.com/)
#
# Centreon is a full-fledged industry-strength solution that meets
# the needs in IT infrastructure and application monitoring for
# service performance.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

package cloud::docker::mode::listcontainers;

use base qw(centreon::plugins::mode);

use strict;
use warnings;

sub new {
    my ($class, %options) = @_;
    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
    bless $self, $class;

    $self->{version} = '1.2';
    $options{options}->add_options(arguments =>
        {
            "port:s"     => { name => 'port' },
            "exclude:s"  => { name => 'exclude' },
        });

    $self->{container_infos} = ();

    return $self;
}

sub check_options {
    my ($self, %options) = @_;
    $self->SUPER::init(%options);
}

sub check_exclude {
    my ($self, %options) = @_;

    if (defined($self->{option_results}->{exclude}) && $self->{option_results}->{exclude} =~ /(^|\s|,)${options{status}}(\s|,|$)/) {
        $self->{output}->output_add(long_msg => sprintf("Skipping ${options{status}} container."));
        return 1;
    }
return 0;
}

sub listcontainer_request {
    my ($self, %options) = @_;

	my $urlpath = "/containers/json";
	my $port = $self->{option_results}->{port};
	my $containerapi = $options{custom};

    my $webcontent = $containerapi->api_request(urlpath => $urlpath,
                                                port => $port);

    foreach my $val (@$webcontent) {
        my $containerstate;
        if (($val->{Status} =~ m/^Up/) && ($val->{Status} =~ m/^(?:(?!Paused).)*$/)) {
            return if ($self->check_exclude(status => 'Running'));
            $containerstate = 'Running';
        } elsif ($val->{Status} =~ m/^Exited/) {
            return if ($self->check_exclude(status => 'Exited'));
            $containerstate = 'Exited';
        } elsif ($val->{Status} =~ m/\(Paused\)$/) {
            return if ($self->check_exclude(status => 'Paused'));
            $containerstate = 'Paused';
        }
        my $containername = $val->{Names}->[0];
        $containername =~ s/^\///;
        $self->{container_infos}->{$containername}->{id} = $val->{Id};
        $self->{container_infos}->{$containername}->{image} = $val->{Image};
        $self->{container_infos}->{$containername}->{state} = $containerstate;
    }
}

sub disco_format {
    my ($self, %options) = @_;

    my $names = ['name', 'id', 'image', 'state'];
    $self->{output}->add_disco_format(elements => $names);
}

sub disco_show {
    my ($self, %options) = @_;

    $self->listcontainer_request(%options);

    foreach my $containername (keys %{$self->{container_infos}}) {
        $self->{output}->add_disco_entry(name => $containername,
                                         id => $self->{container_infos}->{$containername}->{id},
                                         image => $self->{container_infos}->{$containername}->{image},
                                         state => $self->{container_infos}->{$containername}->{state},
                                        );
    }
}

sub run {
    my ($self, %options) = @_;

    $self->listcontainer_request(%options);

    foreach my $containername (keys %{$self->{container_infos}}) {
        $self->{output}->output_add(long_msg => sprintf("%s [id = %s , image = %s, state = %s]",
                                                        $containername,
                                                        $self->{container_infos}->{$containername}->{id},
                                                        $self->{container_infos}->{$containername}->{image},
                                                        $self->{container_infos}->{$containername}->{state}));
    }

    $self->{output}->output_add(severity => 'OK',
                                short_msg => 'List containers:');

    $self->{output}->display(nolabel => 1, force_ignore_perfdata => 1, force_long_output => 1);
    $self->{output}->exit();

}

1;

__END__

=head1 MODE

List Docker containers

=head2 DOCKER OPTIONS

=item B<--port>

Port used by Docker

=head2 MODE OPTIONS

=item B<--exlude>

Exclude specific container's state (comma seperated list) (Example: --exclude=Paused,Running)

=back

=cut