package App::Netdisco::Web::Plugin::Device::Neighbors;

use Dancer ':syntax';
use Dancer::Plugin::Ajax;
use Dancer::Plugin::DBIC;
use Dancer::Plugin::Auth::Extensible;

use List::MoreUtils ();
use App::Netdisco::Web::Plugin;

register_device_tab({ tag => 'netmap', label => 'Neighbors' });

ajax '/ajax/content/device/netmap' => require_login sub {
    content_type('text/html');
    template 'ajax/device/netmap.tt', {}, { layout => undef };
};

ajax '/ajax/data/device/netmappositions' => require_login sub {
    my $p = param('positions') or send_error('Missing positions', 400);
    my $positions = from_json($p) or send_error('Bad positions', 400);
    send_error('Bad positions', 400) unless ref [] eq ref $positions;

    my $vlan = param('vlan');
    undef $vlan if (defined $vlan and $vlan !~ m/^\d+$/);

    my %clean = ();
    POSITION: foreach my $pos (@$positions) {
      next unless ref {} eq ref $pos;
      foreach my $k (qw/ID x y/) {
        next POSITION unless exists $pos->{$k};
        next POSITION unless $pos->{$k} =~ m/^[[:word:]\.-]+$/;
      }
      $clean{$pos->{ID}} = { x => $pos->{x}, y => $pos->{y} };
    }

    return unless scalar keys %clean;
    my $posrow = schema('netdisco')->resultset('NetmapPositions')->find({
      device_groups => \[ '= ?', [device_groups => [sort (List::MoreUtils::uniq( '__ANY__' )) ]] ],
      vlan => ($vlan || 0)});
    if ($posrow) {
      $posrow->update({ positions => to_json(\%clean) });
    }
    else {
      schema('netdisco')->resultset('NetmapPositions')->create({
        device_groups => [sort (List::MoreUtils::uniq( '__ANY__' )) ],
        vlan => ($vlan || 0),
        positions => to_json(\%clean),
      });
    }
};

# q
# vlan
# mapshow=all,neighbors,only

# devgrp[]
# colorgroups
# dynamicsize

ajax '/ajax/data/device/netmap' => require_login sub {
    my $q = param('q');
    my $qdev = schema('netdisco')->resultset('Device')
      ->search_for_device($q) or send_error('Bad device', 400);

    my $vlan = param('vlan');
    undef $vlan if (defined $vlan and $vlan !~ m/^\d+$/);

    my $mapshow = (param('mapshow') || 'neighbors');
    $mapshow = 'neighbors' if $mapshow !~ m/^(?:all|neighbors|only)$/;
    $mapshow = 'all' unless $qdev->in_storage;

    my %id_for = ();
    my %ok_dev = ();
    my %v3data = ( nodes => {}, links => [] );
    my %v4data = ( nodes => [], links => [] );
    my $domain = quotemeta( setting('domain_suffix') || '' );

    # LINKS

    my $rs = schema('netdisco')->resultset('Virtual::DeviceLinks')->search({
      ($mapshow eq 'neighbors' ? ( -or => [
          { left_ip  => $qdev->ip },
          { right_ip => $qdev->ip },
      ]) : ())
    }, {
      columns => [qw/left_ip right_ip/],
      result_class => 'DBIx::Class::ResultClass::HashRefInflator',
    });

    if ($vlan) {
        $rs = $rs->search({
          -or => [
            { 'left_vlans.vlan' => $vlan },
            { 'right_vlans.vlan' => $vlan },
          ],
        }, {
          join => [qw/left_vlans right_vlans/],
        });
    }

    my @links = $rs->all; # because we have to run this twice
    foreach my $l (@links) {
      next if (($mapshow eq 'neighbors')
        and (($l->{left_ip} ne $qdev->ip) and ($l->{right_ip} ne $qdev->ip)));

      push @{$v3data{'links'}}, {
        FROMID => $l->{left_ip},
        TOID   => $l->{right_ip},
      };

      ++$ok_dev{$l->{left_ip}};
      ++$ok_dev{$l->{right_ip}};
    }

    # DEVICES (NODES)

    my $posrow = schema('netdisco')->resultset('NetmapPositions')->find({
      device_groups => \[ '= ?', [device_groups => [sort (List::MoreUtils::uniq( '__ANY__' )) ]] ],
      vlan => ($vlan || 0)});
    my $pos_for = from_json( $posrow ? $posrow->positions : '{}' );

    my @devices = schema('netdisco')->resultset('Device')->search({}, {
      result_class => 'DBIx::Class::ResultClass::HashRefInflator',
      columns => ['ip', 'dns', 'name'],
      '+select' => [\'row_number() over()'], '+as' => ['row_number'],
    })->all;

    foreach my $device (@devices) {
      next unless $ok_dev{$device->{ip}}; # vlan filter's effect

      $id_for{$device->{ip}} = $device->{'row_number'};
      (my $name = ($device->{dns} || lc($device->{name}) || $device->{ip})) =~ s/$domain$//;

      $v3data{nodes}->{ ($device->{row_number} - 1) } = {
        ID => $device->{ip},
        SIZEVALUE => 3000,
        (param('colorgroups') ? (COLORVALUE => 10) : ()),
        LABEL => $name,
      };

      if (exists $pos_for->{$device->{ip}}) {
        my $node = $v3data{nodes}->{ ($device->{row_number} - 1) };
        $node->{'fixed'} = 1;
        $node->{'x'} = $pos_for->{$device->{ip}}->{'x'};
        $node->{'y'} = $pos_for->{$device->{ip}}->{'y'};
      }
      else {
        ++$v3data{'newnodes'};
      }

      $v3data{'centernode'} = $device->{ip}
        if $qdev and $qdev->in_storage and $device->{ip} eq $qdev->ip;

      push @{$v4data{'nodes'}}, { index => ($device->{row_number} - 1) };
    }

    # go back and do v4 links now we have row IDs
    foreach my $l (@links) {
      next if (($mapshow eq 'neighbors')
        and (($l->{left_ip} ne $qdev->ip) and ($l->{right_ip} ne $qdev->ip)));

      push @{$v4data{'links'}}, {
        source => ($id_for{$l->{left_ip}} - 1),
        target => ($id_for{$l->{right_ip}} - 1),
      };
    }

    content_type('application/json');
    to_json({ v3 => \%v3data, v4 => \%v4data});
};

true;