<?php

/*
 * LibreNMS
 *
 * Copyright (c) 2014 Neil Lathwood <https://github.com/laf/ http://www.lathwood.co.uk/fa>
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.  Please see LICENSE.txt at the top level of
 * the source code distribution for details.
 */

use App\Models\Availability;
use App\Models\Device;
use App\Models\DeviceGroup;
use App\Models\DeviceOutage;
use App\Models\PortsFdb;
use App\Models\Sensor;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Routing\Router;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\Validator;
use Illuminate\Support\Str;
use LibreNMS\Alerting\QueryBuilderParser;
use LibreNMS\Config;
use LibreNMS\Data\Store\Datastore;
use LibreNMS\Exceptions\InvalidIpException;
use LibreNMS\Util\IP;
use LibreNMS\Util\IPv4;

function api_success($result, $result_name, $message = null, $code = 200, $count = null, $extra = null)
{
    if (isset($result) && ! isset($result_name)) {
        return api_error(500, 'Result name not specified');
    }

    $output = ['status' => 'ok'];

    if (isset($result)) {
        $output[$result_name] = $result;
    }
    if (isset($message) && $message != '') {
        $output['message'] = $message;
    }
    if (! isset($count) && is_array($result)) {
        $count = count($result);
    }
    if (isset($count)) {
        $output['count'] = $count;
    }
    if (isset($extra)) {
        $output = array_merge($output, $extra);
    }

    return response()->json($output, $code, [], JSON_PRETTY_PRINT);
} // end api_success()

function api_success_noresult($code, $message = null)
{
    return api_success(null, null, $message, $code);
} // end api_success_noresult

function api_error($statusCode, $message)
{
    return response()->json([
        'status'  => 'error',
        'message' => $message,
    ], $statusCode, [], JSON_PRETTY_PRINT);
} // end api_error()

function api_not_found()
{
    return api_error(404, "This API route doesn't exist.");
}

function api_get_graph(array $vars)
{
    global $dur;        // Needed for callback within graph code

    $auth = '1';
    $base64_output = '';

    // prevent ugly error for undefined graphs from being passed to the user
    [$type, $subtype] = extract_graph_type($vars['type']);
    if (! is_file(base_path("includes/html/graphs/$type/auth.inc.php"))) {
        return api_error(400, 'Invalid graph type');
    }

    ob_start();

    include 'includes/html/graphs/graph.inc.php';
    Datastore::terminate();

    $image = ob_get_contents();
    ob_end_clean();

    if ($vars['output'] === 'base64') {
        return api_success(['image' => $base64_output, 'content-type' => get_image_type()], 'image');
    }

    return response($image, 200, ['Content-Type' => get_image_type()]);
}

function check_bill_permission($bill_id, $callback)
{
    if (! bill_permitted($bill_id)) {
        return api_error(403, 'Insufficient permissions to access this bill');
    }

    return $callback($bill_id);
}

function check_device_permission($device_id, $callback = null)
{
    if (! device_permitted($device_id)) {
        return api_error(403, 'Insufficient permissions to access this device');
    }

    return is_callable($callback) ? $callback($device_id) : true;
}

function check_port_permission($port_id, $device_id, $callback)
{
    if (! device_permitted($device_id) && ! port_permitted($port_id, $device_id)) {
        return api_error(403, 'Insufficient permissions to access this port');
    }

    return $callback($port_id);
}

function get_graph_by_port_hostname(Illuminate\Http\Request $request, $ifname = null, $type = 'port_bits')
{
    // This will return a graph for a given port by the ifName
    $hostname = $request->route('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $vars = [
        'port'   => $ifname ?: $request->route('ifname'),
        'type'   => $request->route('type', $type),
        'output' => $request->get('output', 'display'),
        'width'  => $request->get('width', 1075),
        'height' => $request->get('height', 300),
    ];

    if ($request->has('from')) {
        $vars['from'] = $request->get('from');
    }

    if ($request->has('to')) {
        $vars['to'] = $request->get('to');
    }

    $port = $request->get('ifDescr') ? 'ifDescr' : 'ifName';
    $vars['id'] = dbFetchCell("SELECT `P`.`port_id` FROM `ports` AS `P` JOIN `devices` AS `D` ON `P`.`device_id` = `D`.`device_id` WHERE `D`.`device_id`=? AND `P`.`$port`=? AND `deleted` = 0 LIMIT 1", [$device_id, $vars['port']]);

    return check_port_permission($vars['id'], $device_id, function () use ($vars) {
        return api_get_graph($vars);
    });
}

function get_port_stats_by_port_hostname(Illuminate\Http\Request $request)
{
    $ifName = $request->route('ifname');

    // handle %2f in paths and pass to get_graph_by_port_hostname if needed
    if (Str::contains($ifName, '/')) {
        $parts = explode('/', $request->path());

        if (isset($parts[5])) {
            $ifName = urldecode($parts[5]);
            if (isset($parts[6])) {
                return get_graph_by_port_hostname($request, $ifName, $parts[6]);
            }
        }
    }

    // This will return port stats based on a devices hostname and ifName
    $hostname = $request->route('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $port = dbFetchRow('SELECT * FROM `ports` WHERE `device_id`=? AND `ifName`=? AND `deleted` = 0', [$device_id, $ifName]);

    return check_port_permission($port['port_id'], $device_id, function () use ($request, $port) {
        $in_rate = $port['ifInOctets_rate'] * 8;
        $out_rate = $port['ifOutOctets_rate'] * 8;
        $port['in_rate'] = formatRates($in_rate);
        $port['out_rate'] = formatRates($out_rate);
        $port['in_perc'] = number_format($in_rate / $port['ifSpeed'] * 100, 2, '.', '');
        $port['out_perc'] = number_format($out_rate / $port['ifSpeed'] * 100, 2, '.', '');
        $port['in_pps'] = format_bi($port['ifInUcastPkts_rate']);
        $port['out_pps'] = format_bi($port['ifOutUcastPkts_rate']);

        //only return requested columns
        if ($request->has('columns')) {
            $cols = explode(',', $request->get('columns'));
            foreach (array_keys($port) as $c) {
                if (! in_array($c, $cols)) {
                    unset($port[$c]);
                }
            }
        }

        return api_success($port, 'port');
    });
}

function get_graph_generic_by_hostname(Illuminate\Http\Request $request)
{
    // This will return a graph type given a device id.
    $hostname = $request->route('hostname');
    $sensor_id = $request->route('sensor_id');
    $vars = [];
    $vars['type'] = $request->route('type', 'device_uptime');
    $vars['output'] = $request->get('output', 'display');
    if (isset($sensor_id)) {
        $vars['id'] = $sensor_id;
        if (Str::contains($vars['type'], '_wireless')) {
            $vars['type'] = str_replace('device_', '', $vars['type']);
        } else {
            // If this isn't a wireless graph we need to fix the name.
            $vars['type'] = str_replace('device_', 'sensor_', $vars['type']);
        }
    }

    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $device = device_by_id_cache($device_id);
    $vars['device'] = $device['device_id'];

    return check_device_permission($device_id, function () use ($request, $vars) {
        if ($request->has('from')) {
            $vars['from'] = $request->get('from');
        }

        if ($request->has('to')) {
            $vars['to'] = $request->get('to');
        }

        $vars['width'] = $request->get('width', 1075);
        $vars['height'] = $request->get('height', 300);

        return api_get_graph($vars);
    });
}

function list_locations()
{
    $locations = dbFetchRows('SELECT `locations`.* FROM `locations` WHERE `locations`.`location` IS NOT NULL');
    $total_locations = count($locations);
    if ($total_locations == 0) {
        return api_error(404, 'Locations do not exist');
    }

    return api_success($locations, 'locations');
}

function get_device(Illuminate\Http\Request $request)
{
    // return details of a single device
    $hostname = $request->route('hostname');

    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    // find device matching the id
    $device = device_by_id_cache($device_id);
    if (! $device) {
        return api_error(404, "Device $hostname does not exist");
    }

    return check_device_permission($device_id, function () use ($device) {
        $host_id = get_vm_parent_id($device);
        if (is_numeric($host_id)) {
            $device = array_merge($device, ['parent_id' => $host_id]);
        }

        return api_success([$device], 'devices');
    });
}

function list_devices(Illuminate\Http\Request $request)
{
    // This will return a list of devices

    $order = $request->get('order');
    $type = $request->get('type');
    $query = $request->get('query');
    $param = [];

    if (empty($order)) {
        $order = 'hostname';
    }

    if (stristr($order, ' desc') === false && stristr($order, ' asc') === false) {
        $order = 'd.`' . $order . '` ASC';
    }

    $select = ' d.*, GROUP_CONCAT(dd.device_id) AS dependency_parent_id, GROUP_CONCAT(dd.hostname) AS dependency_parent_hostname, `location`, `lat`, `lng` ';
    $join = ' LEFT JOIN `device_relationships` AS dr ON dr.`child_device_id` = d.`device_id` LEFT JOIN `devices` AS dd ON dr.`parent_device_id` = dd.`device_id` LEFT JOIN `locations` ON `locations`.`id` = `d`.`location_id`';

    if ($type == 'all' || empty($type)) {
        $sql = '1';
    } elseif ($type == 'active') {
        $sql = "`d`.`ignore`='0' AND `d`.`disabled`='0'";
    } elseif ($type == 'location') {
        $sql = "`locations`.`location` LIKE '%" . $query . "%'";
    } elseif ($type == 'hostname') {
        $sql = "`d`.`hostname` LIKE '%" . $query . "%'";
    } elseif ($type == 'ignored') {
        $sql = "`d`.`ignore`='1' AND `d`.`disabled`='0'";
    } elseif ($type == 'up') {
        $sql = "`d`.`status`='1' AND `d`.`ignore`='0' AND `d`.`disabled`='0'";
    } elseif ($type == 'down') {
        $sql = "`d`.`status`='0' AND `d`.`ignore`='0' AND `d`.`disabled`='0'";
    } elseif ($type == 'disabled') {
        $sql = "`d`.`disabled`='1'";
    } elseif ($type == 'os') {
        $sql = '`d`.`os`=?';
        $param[] = $query;
    } elseif ($type == 'mac') {
        $join .= ' LEFT JOIN `ports` AS p ON d.`device_id` = p.`device_id` LEFT JOIN `ipv4_mac` AS m ON p.`port_id` = m.`port_id` ';
        $sql = 'm.`mac_address`=?';
        $select .= ',p.* ';
        $param[] = $query;
    } elseif ($type == 'ipv4') {
        $join .= ' LEFT JOIN `ports` AS p ON d.`device_id` = p.`device_id` LEFT JOIN `ipv4_addresses` AS a ON p.`port_id` = a.`port_id` ';
        $sql = 'a.`ipv4_address`=?';
        $select .= ',p.* ';
        $param[] = $query;
    } elseif ($type == 'ipv6') {
        $join .= ' LEFT JOIN `ports` AS p ON d.`device_id` = p.`device_id` LEFT JOIN `ipv6_addresses` AS a ON p.`port_id` = a.`port_id` ';
        $sql = 'a.`ipv6_address`=? OR a.`ipv6_compressed`=?';
        $select .= ',p.* ';
        $param = [$query, $query];
    } else {
        $sql = '1';
    }

    if (! Auth::user()->hasGlobalRead()) {
        $sql .= ' AND `d`.`device_id` IN (SELECT device_id FROM devices_perms WHERE user_id = ?)';
        $param[] = Auth::id();
    }
    $devices = [];
    $dev_query = "SELECT $select FROM `devices` AS d $join WHERE $sql GROUP BY d.`hostname` ORDER BY $order";
    foreach (dbFetchRows($dev_query, $param) as $device) {
        $host_id = get_vm_parent_id($device);
        $device['ip'] = inet6_ntop($device['ip']);
        if (is_numeric($host_id)) {
            $device['parent_id'] = $host_id;
        }
        $devices[] = $device;
    }

    return api_success($devices, 'devices');
}

function add_device(Illuminate\Http\Request $request)
{
    // This will add a device using the data passed encoded with json
    // FIXME: Execution flow through this function could be improved
    $data = json_decode($request->getContent(), true);

    $additional = [];
    // keep scrutinizer from complaining about snmpver not being set for all execution paths
    $snmpver = 'v2c';
    if (empty($data)) {
        return api_error(400, 'No information has been provided to add this new device');
    }
    if (empty($data['hostname'])) {
        return api_error(400, 'Missing the device hostname');
    }

    $hostname = $data['hostname'];
    $port = $data['port'] ?: Config::get('snmp.port');
    $transport = $data['transport'] ?: 'udp';
    $poller_group = $data['poller_group'] ?: 0;
    $force_add = $data['force_add'] ? true : false;
    $snmp_disable = ($data['snmp_disable']);
    if ($snmp_disable) {
        $additional = [
            'sysName'      => $data['sysName'] ?: '',
            'os'           => $data['os'] ?: 'ping',
            'hardware'     => $data['hardware'] ?: '',
            'snmp_disable' => 1,
        ];
    } elseif ($data['version'] == 'v1' || $data['version'] == 'v2c') {
        if ($data['community']) {
            Config::set('snmp.community', [$data['community']]);
        }

        $snmpver = $data['version'];
    } elseif ($data['version'] == 'v3') {
        $v3 = [
            'authlevel'  => $data['authlevel'],
            'authname'   => $data['authname'],
            'authpass'   => $data['authpass'],
            'authalgo'   => $data['authalgo'],
            'cryptopass' => $data['cryptopass'],
            'cryptoalgo' => $data['cryptoalgo'],
        ];

        $v3_config = Config::get('snmp.v3');
        array_unshift($v3_config, $v3);
        Config::set('snmp.v3', $v3_config);
        $snmpver = 'v3';
    } else {
        return api_error(400, 'You haven\'t specified an SNMP version to use');
    }

    $additional['overwrite_ip'] = $data['overwrite_ip'] ?: null;

    try {
        $device_id = addHost($hostname, $snmpver, $port, $transport, $poller_group, $force_add, 'ifIndex', $additional);
    } catch (Exception $e) {
        return api_error(500, $e->getMessage());
    }

    return api_success_noresult(201, "Device $hostname ($device_id) has been added successfully");
}

function del_device(Illuminate\Http\Request $request)
{
    // This will add a device using the data passed encoded with json
    $hostname = $request->route('hostname');

    if (empty($hostname)) {
        return api_error(400, 'No hostname has been provided to delete');
    }

    // allow deleting by device_id or hostname
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $device = null;
    if ($device_id) {
        // save the current details for returning to the client on successful delete
        $device = device_by_id_cache($device_id);
    }

    if (! $device) {
        return api_error(404, "Device $hostname not found");
    }

    $response = delete_device($device_id);
    if (empty($response)) {
        // FIXME: Need to provide better diagnostics out of delete_device
        return api_error(500, 'Device deletion failed');
    }

    // deletion succeeded - include old device details in response
    return api_success([$device], 'devices', $response);
}

function device_availability(Illuminate\Http\Request $request)
{
    // return availability per device

    $hostname = $request->route('hostname');

    if (empty($hostname)) {
        return api_error(400, 'No hostname has been provided to get availability');
    }

    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) {
        $availabilities = Availability::select('duration', 'availability_perc')
            ->where('device_id', '=', $device_id)
            ->orderBy('duration', 'ASC');

        return api_success($availabilities->get(), 'availability');
    });
}

function device_outages(Illuminate\Http\Request $request)
{
    // return outages per device

    $hostname = $request->route('hostname');

    if (empty($hostname)) {
        return api_error(400, 'No hostname has been provided to get availability');
    }

    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) {
        $outages = DeviceOutage::select('going_down', 'up_again')
            ->where('device_id', '=', $device_id)
            ->orderBy('going_down', 'DESC');

        return api_success($outages->get(), 'outages');
    });
}

function get_vlans(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');

    if (empty($hostname)) {
        return api_error(500, 'No hostname has been provided');
    }

    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $device = null;
    if ($device_id) {
        // save the current details for returning to the client on successful delete
        $device = device_by_id_cache($device_id);
    }

    if (! $device) {
        return api_error(404, "Device $hostname not found");
    }

    return check_device_permission($device_id, function ($device_id) {
        $vlans = dbFetchRows('SELECT vlan_vlan,vlan_domain,vlan_name,vlan_type,vlan_mtu FROM vlans WHERE `device_id` = ?', [$device_id]);

        return api_success($vlans, 'vlans');
    });
}

function show_endpoints(Illuminate\Http\Request $request, Router $router)
{
    $output = [];
    $base = str_replace('api/v0', '', $request->url());
    foreach ($router->getRoutes() as $route) {
        /** @var \Illuminate\Routing\Route $route */
        if (Str::startsWith($route->getPrefix(), 'api/v0') && $route->getName()) {
            $output[$route->getName()] = $base . $route->uri();
        }
    }

    ksort($output);

    return response()->json($output, 200, [], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
}

function list_bgp(Illuminate\Http\Request $request)
{
    $sql = '';
    $sql_params = [];
    $hostname = $request->get('hostname');
    $asn = $request->get('asn');
    $remote_asn = $request->get('remote_asn');
    $local_address = $request->get('local_address');
    $remote_address = $request->get('remote_address');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    if (is_numeric($device_id)) {
        $sql .= ' AND `devices`.`device_id` = ?';
        $sql_params[] = $device_id;
    }
    if (! empty($asn)) {
        $sql .= ' AND `devices`.`bgpLocalAs` = ?';
        $sql_params[] = $asn;
    }
    if (! empty($remote_asn)) {
        $sql .= ' AND `bgpPeers`.`bgpPeerRemoteAs` = ?';
        $sql_params[] = $remote_asn;
    }
    if (! empty($local_address)) {
        $sql .= ' AND `bgpPeers`.`bgpLocalAddr` = ?';
        try {
            $sql_params[] = IP::parse($local_address)->uncompressed();
        } catch (InvalidIpException $e) {
            return api_error(400, 'Invalid local address');
        }
    }
    if (! empty($remote_address)) {
        $sql .= ' AND `bgpPeers`.`bgpPeerIdentifier` = ?';
        try {
            $sql_params[] = IP::parse($remote_address)->uncompressed();
        } catch (InvalidIpException $e) {
            return api_error(400, 'Invalid remote address');
        }
    }

    $bgp_sessions = dbFetchRows("SELECT `bgpPeers`.* FROM `bgpPeers` LEFT JOIN `devices` ON `bgpPeers`.`device_id` = `devices`.`device_id` WHERE `bgpPeerState` IS NOT NULL AND `bgpPeerState` != '' $sql", $sql_params);
    $total_bgp_sessions = count($bgp_sessions);
    if (! is_numeric($total_bgp_sessions)) {
        return api_error(500, 'Error retrieving bgpPeers');
    }

    return api_success($bgp_sessions, 'bgp_sessions');
}

function get_bgp(Illuminate\Http\Request $request)
{
    $bgpPeerId = $request->route('id');
    if (! is_numeric($bgpPeerId)) {
        return api_error(400, 'Invalid id has been provided');
    }

    $bgp_session = dbFetchRows("SELECT * FROM `bgpPeers` WHERE `bgpPeerState` IS NOT NULL AND `bgpPeerState` != '' AND bgpPeer_id = ?", [$bgpPeerId]);
    $bgp_session_count = count($bgp_session);
    if (! is_numeric($bgp_session_count)) {
        return api_error(500, 'Error retrieving BGP peer');
    }
    if ($bgp_session_count == 0) {
        return api_error(404, "BGP peer $bgpPeerId does not exist");
    }

    return api_success($bgp_session, 'bgp_session');
}

function list_cbgp(Illuminate\Http\Request $request)
{
    $sql = '';
    $sql_params = [];
    $hostname = $request->get('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    if (is_numeric($device_id)) {
        $permission = check_device_permission($device_id);
        if ($permission !== true) {
            return $permission; // permission error
        }
        $sql = ' AND `devices`.`device_id` = ?';
        $sql_params[] = $device_id;
    }
    if (! Auth::user()->hasGlobalRead()) {
        $sql .= ' AND `bgpPeers_cbgp`.`device_id` IN (SELECT device_id FROM devices_perms WHERE user_id = ?)';
        $sql_params[] = Auth::id();
    }

    $bgp_counters = dbFetchRows("SELECT `bgpPeers_cbgp`.* FROM `bgpPeers_cbgp` LEFT JOIN `devices` ON `bgpPeers_cbgp`.`device_id` = `devices`.`device_id` WHERE `bgpPeers_cbgp`.`device_id` IS NOT NULL $sql", $sql_params);
    $total_bgp_counters = count($bgp_counters);
    if ($total_bgp_counters == 0) {
        return api_error(404, 'BGP counters does not exist');
    }

    return api_success($bgp_counters, 'bgp_counters');
}

function list_ospf(Illuminate\Http\Request $request)
{
    $sql = '';
    $sql_params = [];
    $hostname = $request->get('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    if (is_numeric($device_id)) {
        $sql = ' AND `device_id`=?';
        $sql_params = [$device_id];
    }

    $ospf_neighbours = dbFetchRows("SELECT * FROM ospf_nbrs WHERE `ospfNbrState` IS NOT NULL AND `ospfNbrState` != '' $sql", $sql_params);
    $total_ospf_neighbours = count($ospf_neighbours);
    if (! is_numeric($total_ospf_neighbours)) {
        return api_error(500, 'Error retrieving ospf_nbrs');
    }

    return api_success($ospf_neighbours, 'ospf_neighbours');
}

function get_graph_by_portgroup(Illuminate\Http\Request $request)
{
    $group = $request->route('group');
    $id = $request->route('id');
    $vars = [
        'output' => $request->get('output', 'display'),
        'width'  => $request->get('width', 1075),
        'height' => $request->get('height', 300),
        'type'   => 'multiport_bits_separate',
    ];
    if ($request->has('from')) {
        $vars['from'] = $request->get('from');
    }

    if ($request->has('to')) {
        $vars['to'] = $request->get('to');
    }

    if (empty($id)) {
        $ports = get_ports_from_type(explode(',', $group));
        $if_list = implode(',', Arr::pluck($ports, 'port_id'));
    } else {
        $if_list = $id;
    }
    $vars['id'] = $if_list;

    return api_get_graph($vars);
}

function get_components(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');

    // Do some filtering if the user requests.
    $options = [];
    // Add the rest of the options with an equals query
    foreach ($request->all() as $k => $v) {
        $options['filter'][$k] = ['=', $v];
    }

    // We need to specify the label as this is a LIKE query
    if ($request->has('label')) {
        // set a label like filter
        $options['filter']['label'] = ['LIKE', $request->get('label')];
    }

    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) use ($options) {
        $COMPONENT = new LibreNMS\Component();
        $components = $COMPONENT->getComponents($device_id, $options);

        return api_success($components[$device_id], 'components');
    });
}

function add_components(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $ctype = $request->route('type');

    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $COMPONENT = new LibreNMS\Component();
    $component = $COMPONENT->createComponent($device_id, $ctype);

    return api_success($component, 'components');
}

function edit_components(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $data = json_decode($request->getContent(), true);

    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $COMPONENT = new LibreNMS\Component();

    if (! $COMPONENT->setComponentPrefs($device_id, $data)) {
        return api_error(500, 'Components could not be edited.');
    }

    return api_success_noresult(200);
}

function delete_components(Illuminate\Http\Request $request)
{
    $cid = $request->route('component');

    $COMPONENT = new LibreNMS\Component();
    if ($COMPONENT->deleteComponent($cid)) {
        return api_success_noresult(200);
    } else {
        return api_error(500, 'Components could not be deleted.');
    }
}

function get_graphs(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');

    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) {
        $graphs = [];
        $graphs[] = [
            'desc' => 'Poller Time',
            'name' => 'device_poller_perf',
        ];
        $graphs[] = [
            'desc' => 'Ping Response',
            'name' => 'device_ping_perf',
        ];
        foreach (dbFetchRows('SELECT * FROM device_graphs WHERE device_id = ? ORDER BY graph', [$device_id]) as $graph) {
            $desc = Config::get("graph_types.device.{$graph['graph']}.descr");
            $graphs[] = [
                'desc' => $desc,
                'name' => 'device_' . $graph['graph'],
            ];
        }

        return api_success($graphs, 'graphs');
    });
}

function trigger_device_discovery(Illuminate\Http\Request $request)
{
    // return details of a single device
    $hostname = $request->route('hostname');

    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    // find device matching the id
    $device = device_by_id_cache($device_id);
    if (! $device) {
        return api_error(404, "Device $hostname does not exist");
    }

    $ret = device_discovery_trigger($device_id);

    return api_success($ret, 'result');
}

function list_available_health_graphs(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) use ($request) {
        $input_type = $request->route('type');
        if ($input_type) {
            $type = preg_replace('/^device_/', '', $input_type);
        }
        $sensor_id = $request->route('sensor_id');
        $graphs = [];

        if (isset($type)) {
            if (isset($sensor_id)) {
                $graphs = dbFetchRows('SELECT * FROM `sensors` WHERE `sensor_id` = ?', [$sensor_id]);
            } else {
                foreach (dbFetchRows('SELECT `sensor_id`, `sensor_descr` FROM `sensors` WHERE `device_id` = ? AND `sensor_class` = ? AND `sensor_deleted` = 0', [$device_id, $type]) as $graph) {
                    $graphs[] = [
                        'sensor_id' => $graph['sensor_id'],
                        'desc' => $graph['sensor_descr'],
                    ];
                }
            }
        } else {
            foreach (dbFetchRows('SELECT `sensor_class` FROM `sensors` WHERE `device_id` = ? AND `sensor_deleted` = 0 GROUP BY `sensor_class`', [$device_id]) as $graph) {
                $graphs[] = [
                    'desc' => ucfirst($graph['sensor_class']),
                    'name' => 'device_' . $graph['sensor_class'],
                ];
            }
            $device = Device::find($device_id);

            if ($device) {
                if ($device->processors()->count() > 0) {
                    array_push($graphs, [
                        'desc' => 'Processors',
                        'name' => 'device_processor',
                    ]);
                }

                if ($device->storage()->count() > 0) {
                    array_push($graphs, [
                        'desc' => 'Storage',
                        'name' => 'device_storage',
                    ]);
                }

                if ($device->mempools()->count() > 0) {
                    array_push($graphs, [
                        'desc' => 'Memory Pools',
                        'name' => 'device_mempool',
                    ]);
                }
            }
        }

        return api_success($graphs, 'graphs');
    });
}

function list_available_wireless_graphs(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) use ($request) {
        $input_type = $request->route('type');
        if ($input_type) {
            [, , $type] = explode('_', $input_type);
        }
        $sensor_id = $request->route('sensor_id');
        $graphs = [];

        if (isset($type)) {
            if (isset($sensor_id)) {
                $graphs = dbFetchRows('SELECT * FROM `wireless_sensors` WHERE `sensor_id` = ?', [$sensor_id]);
            } else {
                foreach (dbFetchRows('SELECT `sensor_id`, `sensor_descr` FROM `wireless_sensors` WHERE `device_id` = ? AND `sensor_class` = ? AND `sensor_deleted` = 0', [$device_id, $type]) as $graph) {
                    $graphs[] = [
                        'sensor_id' => $graph['sensor_id'],
                        'desc'      => $graph['sensor_descr'],
                    ];
                }
            }
        } else {
            foreach (dbFetchRows('SELECT `sensor_class` FROM `wireless_sensors` WHERE `device_id` = ? AND `sensor_deleted` = 0 GROUP BY `sensor_class`', [$device_id]) as $graph) {
                $graphs[] = [
                    'desc' => ucfirst($graph['sensor_class']),
                    'name' => 'device_wireless_' . $graph['sensor_class'],
                ];
            }
        }

        return api_success($graphs, 'graphs');
    });
}

function get_port_graphs(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $columns = $request->get('columns', 'ifName');

    if ($validate = validate_column_list($columns, 'ports') !== true) {
        return $validate;
    }

    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $sql = '';
    $params = [$device_id];
    if (! device_permitted($device_id)) {
        $sql = 'AND `port_id` IN (select `port_id` from `ports_perms` where `user_id` = ?)';
        array_push($params, Auth::id());
    }

    $ports = dbFetchRows("SELECT $columns FROM `ports` WHERE `device_id` = ? AND `deleted` = '0' $sql ORDER BY `ifIndex`", $params);

    return api_success($ports, 'ports');
}

function get_device_ip_addresses(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) {
        $ipv4 = dbFetchRows('SELECT `ipv4_addresses`.* FROM `ipv4_addresses` JOIN `ports` ON `ports`.`port_id`=`ipv4_addresses`.`port_id` WHERE `ports`.`device_id` = ? AND `deleted` = 0', [$device_id]);
        $ipv6 = dbFetchRows('SELECT `ipv6_addresses`.* FROM `ipv6_addresses` JOIN `ports` ON `ports`.`port_id`=`ipv6_addresses`.`port_id` WHERE `ports`.`device_id` = ? AND `deleted` = 0', [$device_id]);
        $ip_addresses_count = count(array_merge($ipv4, $ipv6));
        if ($ip_addresses_count == 0) {
            return api_error(404, "Device $device_id does not have any IP addresses");
        }

        return api_success(array_merge($ipv4, $ipv6), 'addresses');
    });
}

function get_port_ip_addresses(Illuminate\Http\Request $request)
{
    $port_id = $request->route('portid');

    return check_port_permission($port_id, null, function ($port_id) {
        $ipv4 = dbFetchRows('SELECT * FROM `ipv4_addresses` WHERE `port_id` = ?', [$port_id]);
        $ipv6 = dbFetchRows('SELECT * FROM `ipv6_addresses` WHERE `port_id` = ?', [$port_id]);
        $ip_addresses_count = count(array_merge($ipv4, $ipv6));
        if ($ip_addresses_count == 0) {
            return api_error(404, "Port $port_id does not have any IP addresses");
        }

        return api_success(array_merge($ipv4, $ipv6), 'addresses');
    });
}

function get_network_ip_addresses(Illuminate\Http\Request $request)
{
    $network_id = $request->route('id');
    $ipv4 = dbFetchRows('SELECT * FROM `ipv4_addresses` WHERE `ipv4_network_id` = ?', [$network_id]);
    $ipv6 = dbFetchRows('SELECT * FROM `ipv6_addresses` WHERE `ipv6_network_id` = ?', [$network_id]);
    $ip_addresses_count = count(array_merge($ipv4, $ipv6));
    if ($ip_addresses_count == 0) {
        return api_error(404, "IP network $network_id does not exist or is empty");
    }

    return api_success(array_merge($ipv4, $ipv6), 'addresses');
}

function get_port_info(Illuminate\Http\Request $request)
{
    $port_id = $request->route('portid');

    return check_port_permission($port_id, null, function ($port_id) {
        // use hostname as device_id if it's all digits
        $port = dbFetchRows('SELECT * FROM `ports` WHERE `port_id` = ? AND `deleted` = 0', [$port_id]);

        return api_success($port, 'port');
    });
}

function search_ports(Illuminate\Http\Request $request)
{
    $search = $request->route('search');
    $value = "%$search%";
    $ports = \App\Models\Port::hasAccess(Auth::user())
        ->select(['device_id', 'port_id', 'ifIndex', 'ifName'])
        ->where('ifAlias', 'like', $value)
        ->orWhere('ifDescr', 'like', $value)
        ->orWhere('ifName', 'like', $value)
        ->orderBy('ifName')
        ->get();

    if ($ports->isEmpty()) {
        return api_error(404, 'No ports found');
    }

    return api_success($ports, 'ports');
}

function get_all_ports(Illuminate\Http\Request $request)
{
    $columns = $request->get('columns', 'port_id, ifName');
    if ($validate = validate_column_list($columns, 'ports') !== true) {
        return $validate;
    }

    $params = [];
    $sql = '';
    if (! Auth::user()->hasGlobalRead()) {
        $sql = ' AND (device_id IN (SELECT device_id FROM devices_perms WHERE user_id = ?) OR port_id IN (SELECT port_id FROM ports_perms WHERE user_id = ?))';
        array_push($params, Auth::id());
        array_push($params, Auth::id());
    }
    $ports = dbFetchRows("SELECT $columns FROM `ports` WHERE `deleted` = 0 $sql", $params);

    return api_success($ports, 'ports');
}

function get_port_stack(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) use ($request) {
        if ($request->get('valid_mappings')) {
            $mappings = dbFetchRows("SELECT * FROM `ports_stack` WHERE (`device_id` = ? AND `ifStackStatus` = 'active' AND (`port_id_high` != '0' AND `port_id_low` != '0')) ORDER BY `port_id_high`", [$device_id]);
        } else {
            $mappings = dbFetchRows("SELECT * FROM `ports_stack` WHERE `device_id` = ? AND `ifStackStatus` = 'active' ORDER BY `port_id_high`", [$device_id]);
        }

        return api_success($mappings, 'mappings');
    });
}

function list_alert_rules(Illuminate\Http\Request $request)
{
    $id = $request->route('id');
    $sql = '';
    $param = [];
    if ($id > 0) {
        $sql = 'WHERE id=?';
        $param = [$id];
    }

    $rules = dbFetchRows("SELECT * FROM `alert_rules` $sql", $param);

    return api_success($rules, 'rules');
}

function list_alerts(Illuminate\Http\Request $request)
{
    $id = $request->route('id');

    $sql = 'SELECT `D`.`hostname`, `A`.*, `R`.`severity` FROM `alerts` AS `A`, `devices` AS `D`, `alert_rules` AS `R` WHERE `D`.`device_id` = `A`.`device_id` AND `A`.`rule_id` = `R`.`id` ';
    $sql .= 'AND `A`.`state` IN ';
    if ($request->has('state')) {
        $param = explode(',', $request->get('state'));
    } else {
        $param = [1];
    }
    $sql .= dbGenPlaceholders(count($param));

    if ($id > 0) {
        $param[] = $id;
        $sql .= 'AND `A`.id=?';
    }

    $severity = $request->get('severity');
    if ($severity) {
        if (in_array($severity, ['ok', 'warning', 'critical'])) {
            $param[] = $severity;
            $sql .= ' AND `R`.severity=?';
        }
    }

    $order = 'timestamp desc';

    $alert_rule = $request->get('alert_rule');
    if (isset($alert_rule)) {
        if (is_numeric($alert_rule)) {
            $param[] = $alert_rule;
            $sql .= ' AND `R`.id=?';
        }
    }

    if ($request->has('order')) {
        [$sort_column, $sort_order] = explode(' ', $request->get('order'), 2);
        if (($res = validate_column_list($sort_column, 'alerts')) !== true) {
            return $res;
        }
        if (in_array($sort_order, ['asc', 'desc'])) {
            $order = $request->get('order');
        }
    }
    $sql .= ' ORDER BY A.' . $order;

    $alerts = dbFetchRows($sql, $param);

    return api_success($alerts, 'alerts');
}

function add_edit_rule(Illuminate\Http\Request $request)
{
    $data = json_decode($request->getContent(), true);
    if (json_last_error() || ! is_array($data)) {
        return api_error(500, "We couldn't parse the provided json");
    }

    $rule_id = $data['rule_id'];
    $tmp_devices = (array) $data['devices'];
    $groups = (array) $data['groups'];
    $locations = (array) $data['locations'];
    if (empty($tmp_devices) && ! isset($rule_id)) {
        return api_error(400, 'Missing the devices or global device (-1)');
    }

    $devices = [];
    foreach ($tmp_devices as $device) {
        if ($device == '-1') {
            continue;
        }
        $devices[] = (ctype_digit($device) || is_int($device)) ? $device : getidbyname($device);
    }

    if (isset($data['builder'])) {
        // accept inline json or json as a string
        $builder = is_array($data['builder']) ? json_encode($data['builder']) : $data['builder'];
    } else {
        $builder = $data['rule'];
    }
    if (empty($builder)) {
        return api_error(400, 'Missing the alert builder rule');
    }

    $name = $data['name'];
    if (empty($name)) {
        return api_error(400, 'Missing the alert rule name');
    }

    $severity = $data['severity'];
    $sevs = [
        'ok',
        'warning',
        'critical',
    ];
    if (! in_array($severity, $sevs)) {
        return api_error(400, 'Missing the severity');
    }

    $disabled = $data['disabled'];
    if ($disabled != '0' && $disabled != '1') {
        $disabled = 0;
    }

    $count = $data['count'];
    $mute = $data['mute'];
    $delay = $data['delay'];
    $interval = $data['interval'];
    $override_query = $data['override_query'];
    $adv_query = $data['adv_query'];
    $delay_sec = convert_delay($delay);
    $interval_sec = convert_delay($interval);
    if ($mute == 1) {
        $mute = true;
    } else {
        $mute = false;
    }

    $extra = [
        'mute'  => $mute,
        'count' => $count,
        'delay' => $delay_sec,
        'interval' => $interval_sec,
        'options' => [
            'override_query' => $override_query,
        ],
    ];
    $extra_json = json_encode($extra);

    if ($override_query === 'on') {
        $query = $adv_query;
    } else {
        $query = QueryBuilderParser::fromJson($builder)->toSql();
        if (empty($query)) {
            return api_error(500, "We couldn't parse your rule");
        }
    }

    if (! isset($rule_id)) {
        if (dbFetchCell('SELECT `name` FROM `alert_rules` WHERE `name`=?', [$name]) == $name) {
            return api_error(500, 'Addition failed : Name has already been used');
        }
    } elseif (dbFetchCell('SELECT name FROM alert_rules WHERE name=? AND id !=? ', [$name, $rule_id]) == $name) {
        return api_error(500, 'Update failed : Invalid rule id');
    }

    if (is_numeric($rule_id)) {
        if (! (dbUpdate(['name' => $name, 'builder' => $builder, 'query' => $query, 'severity' => $severity, 'disabled' => $disabled, 'extra' => $extra_json], 'alert_rules', 'id=?', [$rule_id]) >= 0)) {
            return api_error(500, 'Failed to update existing alert rule');
        }
    } elseif (! $rule_id = dbInsert(['name' => $name, 'builder' => $builder, 'query' => $query, 'severity' => $severity, 'disabled' => $disabled, 'extra' => $extra_json], 'alert_rules')) {
        return api_error(500, 'Failed to create new alert rule');
    }

    dbSyncRelationship('alert_device_map', 'rule_id', $rule_id, 'device_id', $devices);
    dbSyncRelationship('alert_group_map', 'rule_id', $rule_id, 'group_id', $groups);
    dbSyncRelationship('alert_location_map', 'rule_id', $rule_id, 'location_id', $locations);

    return api_success_noresult(200);
}

function delete_rule(Illuminate\Http\Request $request)
{
    $rule_id = $request->route('id');
    if (is_numeric($rule_id)) {
        if (dbDelete('alert_rules', '`id` =  ? LIMIT 1', [$rule_id])) {
            return api_success_noresult(200, 'Alert rule has been removed');
        } else {
            return api_success_noresult(200, 'No alert rule by that ID');
        }
    }

    return api_error(400, 'Invalid rule id has been provided');
}

function ack_alert(Illuminate\Http\Request $request)
{
    $alert_id = $request->route('id');
    $data = json_decode($request->getContent(), true);

    if (! is_numeric($alert_id)) {
        return api_error(400, 'Invalid alert has been provided');
    }

    $alert = dbFetchRow('SELECT note, info FROM alerts WHERE id=?', [$alert_id]);
    $note = $alert['note'];
    $info = json_decode($alert['info'], true);
    if (! empty($note)) {
        $note .= PHP_EOL;
    }
    $note .= date(Config::get('dateformat.long')) . ' - Ack (' . Auth::user()->username . ") {$data['note']}";
    $info['until_clear'] = $data['until_clear'];
    $info = json_encode($info);

    if (dbUpdate(['state' => 2, 'note' => $note, 'info' => $info], 'alerts', '`id` = ? LIMIT 1', [$alert_id])) {
        return api_success_noresult(200, 'Alert has been acknowledged');
    } else {
        return api_success_noresult(200, 'No Alert by that ID');
    }
}

function unmute_alert(Illuminate\Http\Request $request)
{
    $alert_id = $request->route('id');
    $data = json_decode($request->getContent(), true);

    if (! is_numeric($alert_id)) {
        return api_error(400, 'Invalid alert has been provided');
    }

    $alert = dbFetchRow('SELECT note, info FROM alerts WHERE id=?', [$alert_id]);
    $note = $alert['note'];

    if (! empty($note)) {
        $note .= PHP_EOL;
    }
    $note .= date(Config::get('dateformat.long')) . ' - Ack (' . Auth::user()->username . ") {$data['note']}";

    if (dbUpdate(['state' => 1, 'note' => $note], 'alerts', '`id` = ? LIMIT 1', [$alert_id])) {
        return api_success_noresult(200, 'Alert has been unmuted');
    } else {
        return api_success_noresult(200, 'No alert by that ID');
    }
}

function get_inventory(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) use ($request) {
        $sql = '';
        $params = [];
        if ($request->get('entPhysicalClass')) {
            $sql .= ' AND entPhysicalClass=?';
            $params[] = $request->get('entPhysicalClass');
        }

        if ($request->get('entPhysicalContainedIn')) {
            $sql .= ' AND entPhysicalContainedIn=?';
            $params[] = $request->get('entPhysicalContainedIn');
        } else {
            $sql .= ' AND entPhysicalContainedIn="0"';
        }

        if (! is_numeric($device_id)) {
            return api_error(400, 'Invalid device provided');
        }
        $sql .= ' AND `device_id`=?';
        $params[] = $device_id;
        $inventory = dbFetchRows("SELECT * FROM `entPhysical` WHERE 1 $sql", $params);

        return api_success($inventory, 'inventory');
    });
}

function get_inventory_for_device(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    return check_device_permission($device_id, function ($device_id) {
        $params = [];
        $sql = 'SELECT * FROM `entPhysical` WHERE device_id = ?';
        $params[] = $device_id;
        $inventory = dbFetchRows($sql, $params);

        return api_success($inventory, 'inventory');
    });
}

function search_oxidized(Illuminate\Http\Request $request)
{
    $search_in_conf_textbox = $request->route('searchstring');
    $result = search_oxidized_config($search_in_conf_textbox);

    if (! $result) {
        return api_error(404, 'Received no data from Oxidized');
    } else {
        return api_success($result, 'nodes');
    }
}

function get_oxidized_config(Illuminate\Http\Request $request)
{
    $hostname = $request->route('device_name');
    $result = json_decode(file_get_contents(Config::get('oxidized.url') . '/node/fetch/' . $hostname . '?format=json'), true);
    if (! $result) {
        return api_error(404, 'Received no data from Oxidized');
    } else {
        return api_success($result, 'config');
    }
}

function list_oxidized(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $devices = [];
    $device_types = "'" . implode("','", Config::get('oxidized.ignore_types', [])) . "'";
    $device_os = "'" . implode("','", Config::get('oxidized.ignore_os', [])) . "'";

    $sql = '';
    $params = [];
    if ($hostname) {
        $sql = ' AND hostname = ?';
        $params = [$hostname];
    }

    foreach (dbFetchRows("SELECT hostname,sysname,sysDescr,hardware,os,locations.location,ip AS ip FROM `devices` LEFT JOIN locations ON devices.location_id = locations.id LEFT JOIN devices_attribs AS `DA` ON devices.device_id = DA.device_id AND `DA`.attrib_type='override_Oxidized_disable' WHERE `disabled`='0' AND `ignore` = 0 AND (DA.attrib_value = 'false' OR DA.attrib_value IS NULL) AND (`type` NOT IN ($device_types) AND `os` NOT IN ($device_os)) $sql", $params) as $device) {
        // Convert from packed value to human value
        $device['ip'] = inet6_ntop($device['ip']);

        // Pre-populate the group with the default
        if (Config::get('oxidized.group_support') === true && ! empty(Config::get('oxidized.default_group'))) {
            $device['group'] = Config::get('oxidized.default_group');
        }
        foreach (Config::get('oxidized.maps') as $maps_column => $maps) {
            // Based on Oxidized group support we can apply groups by setting group_support to true
            if ($maps_column == 'group' && Config::get('oxidized.group_support', true) !== true) {
                continue;
            }

            foreach ($maps as $field_type => $fields) {
                foreach ($fields as $field) {
                    if (isset($field['regex']) && preg_match($field['regex'] . 'i', $device[$field_type])) {
                        $device[$maps_column] = $field[$maps_column];
                        break;
                    } elseif (isset($field['match']) && $field['match'] == $device[$field_type]) {
                        $device[$maps_column] = $field[$maps_column];
                        break;
                    }
                }
            }
        }

        // We remap certain device OS' that have different names with Oxidized models
        $models = [
            'arista_eos' => 'eos',
            'vyos'       => 'vyatta',
            'slms'       => 'zhoneolt',
            'fireware'   => 'firewareos',
            'fortigate'  => 'fortios',
        ];

        $device['os'] = str_replace(array_keys($models), array_values($models), $device['os']);

        unset($device['location']);
        unset($device['sysname']);
        unset($device['sysDescr']);
        unset($device['hardware']);
        $devices[] = $device;
    }

    return response()->json($devices, 200, [], JSON_PRETTY_PRINT);
}

function list_bills(Illuminate\Http\Request $request)
{
    $bills = [];
    $bill_id = $request->route('bill_id');
    $bill_ref = $request->get('ref');
    $bill_custid = $request->get('custid');
    $period = $request->get('period');
    $param = [];
    $sql = '';

    if (! empty($bill_custid)) {
        $sql .= '`bill_custid` = ?';
        $param[] = $bill_custid;
    } elseif (! empty($bill_ref)) {
        $sql .= '`bill_ref` = ?';
        $param[] = $bill_ref;
    } elseif (is_numeric($bill_id)) {
        $sql .= '`bill_id` = ?';
        $param[] = $bill_id;
    } else {
        $sql = '1';
    }
    if (! Auth::user()->hasGlobalRead()) {
        $sql .= ' AND `bill_id` IN (SELECT `bill_id` FROM `bill_perms` WHERE `user_id` = ?)';
        $param[] = Auth::id();
    }

    if ($period === 'previous') {
        $select = 'SELECT bills.bill_autoadded, bills.bill_cdr, bills.bill_custid, bills.bill_day, bills.bill_name,
            bills.bill_notes, bills.bill_quota, bills.bill_ref, bill_history.*, bill_history.traf_total as total_data,
            bill_history.traf_in as total_data_in, bill_history.traf_out as total_data_out, bill_history.updated as bill_last_calc
        ';
        $query = 'FROM `bills`
            INNER JOIN (SELECT bill_id, MAX(bill_hist_id) AS bill_hist_id FROM bill_history
                        WHERE bill_dateto < NOW() AND bill_dateto > subdate(NOW(), 40)
                        GROUP BY bill_id) qLastBills ON bills.bill_id = qLastBills.bill_id
            INNER JOIN bill_history ON qLastBills.bill_hist_id = bill_history.bill_hist_id
        ';
    } else {
        $select = "SELECT bills.*,
            IF(bills.bill_type = 'cdr', bill_cdr, bill_quota) AS bill_allowed
        ";
        $query = "FROM `bills`\n";
    }

    foreach (dbFetchRows("$select $query WHERE $sql ORDER BY `bill_name`", $param) as $bill) {
        $rate_data = $bill;
        $allowed = '';
        $used = '';
        $percent = '';
        $overuse = '';

        if (strtolower($bill['bill_type']) == 'cdr') {
            $allowed = format_si($bill['bill_cdr']) . 'bps';
            $used = format_si($rate_data['rate_95th']) . 'bps';
            if ($bill['bill_cdr'] > 0) {
                $percent = round(($rate_data['rate_95th'] / $bill['bill_cdr']) * 100, 2);
            } else {
                $percent = '-';
            }
            $overuse = $rate_data['rate_95th'] - $bill['bill_cdr'];
            $overuse = (($overuse <= 0) ? '-' : format_si($overuse));
        } elseif (strtolower($bill['bill_type']) == 'quota') {
            $allowed = format_bytes_billing($bill['bill_quota']);
            $used = format_bytes_billing($rate_data['total_data']);
            if ($bill['bill_quota'] > 0) {
                $percent = round(($rate_data['total_data'] / ($bill['bill_quota'])) * 100, 2);
            } else {
                $percent = '-';
            }
            $overuse = $rate_data['total_data'] - $bill['bill_quota'];
            $overuse = (($overuse <= 0) ? '-' : format_bytes_billing($overuse));
        }
        $bill['allowed'] = $allowed;
        $bill['used'] = $used;
        $bill['percent'] = $percent;
        $bill['overuse'] = $overuse;

        $bill['ports'] = dbFetchRows('SELECT `D`.`device_id`,`P`.`port_id`,`P`.`ifName` FROM `bill_ports` AS `B`, `ports` AS `P`, `devices` AS `D` WHERE `B`.`bill_id` = ? AND `P`.`port_id` = `B`.`port_id` AND `D`.`device_id` = `P`.`device_id`', [$bill['bill_id']]);

        $bills[] = $bill;
    }

    return api_success($bills, 'bills');
}

function get_bill_graph(Illuminate\Http\Request $request)
{
    $bill_id = $request->route('bill_id');
    $graph_type = $request->route('graph_type');
    if ($graph_type == 'monthly') {
        $graph_type = 'historicmonthly';
    }

    $vars = [
        'type' => "bill_$graph_type",
        'id' => $bill_id,
        'width' => $request->get('width', 1075),
        'height' => $request->get('height', 300),
    ];

    return check_bill_permission($bill_id, function () use ($vars) {
        return api_get_graph($vars);
    });
}

function get_bill_graphdata(Illuminate\Http\Request $request)
{
    $bill_id = $request->route('bill_id');

    return check_bill_permission($bill_id, function ($bill_id) use ($request) {
        $graph_type = $request->route('graph_type');
        if ($graph_type == 'bits') {
            $from = $request->get('from', time() - 60 * 60 * 24);
            $to = $request->get('to', time());
            $reducefactor = $request->get('reducefactor');

            $graph_data = getBillingBitsGraphData($bill_id, $from, $to, $reducefactor);
        } elseif ($graph_type == 'monthly') {
            $graph_data = getHistoricTransferGraphData($bill_id);
        }

        if (! isset($graph_data)) {
            return api_error(400, "Unsupported graph type $graph_type");
        } else {
            return api_success($graph_data, 'graph_data');
        }
    });
}

function get_bill_history(Illuminate\Http\Request $request)
{
    $bill_id = $request->route('bill_id');

    return check_bill_permission($bill_id, function ($bill_id) {
        $result = dbFetchRows('SELECT * FROM `bill_history` WHERE `bill_id` = ? ORDER BY `bill_datefrom` DESC LIMIT 24', [$bill_id]);

        return api_success($result, 'bill_history');
    });
}

function get_bill_history_graph(Illuminate\Http\Request $request)
{
    $bill_id = $request->route('bill_id');
    $bill_hist_id = $request->route('bill_hist_id');
    $graph_type = $request->route('graph_type');

    $vars = [
        'type' => "bill_$graph_type",
        'id' => $bill_id,
        'bill_hist_id' => $bill_hist_id,
        'width' => $request->get('width', 1075),
        'height' => $request->get('height', 300),
    ];

    switch ($graph_type) {
        case 'bits':
            $vars['type'] = 'bill_historicbits';
            $vars['reducefactor'] = $request->get('reducefactor');
            break;

        case 'day':
        case 'hour':
            $vars['imgtype'] = $graph_type;
            $vars['type'] = 'bill_historictransfer';
            break;

        default:
            return api_error(400, "Unknown Graph Type $graph_type");
    }

    return check_bill_permission($bill_id, function () use ($vars) {
        return api_get_graph($vars);
    });
}

function get_bill_history_graphdata(Illuminate\Http\Request $request)
{
    $bill_id = $request->route('bill_id');

    return check_bill_permission($bill_id, function ($bill_id) use ($request) {
        $bill_hist_id = $request->route('bill_hist_id');
        $graph_type = $request->route('graph_type');

        switch ($graph_type) {
            case 'bits':
                $reducefactor = $request->get('reducefactor');

                $graph_data = getBillingHistoryBitsGraphData($bill_id, $bill_hist_id, $reducefactor);
                break;
            case 'day':
            case 'hour':
                $graph_data = getBillingBandwidthGraphData($bill_id, $bill_hist_id, null, null, $graph_type);
                break;
        }

        return ! isset($graph_data) ?
            api_error(400, "Unsupported graph type $graph_type") :
            api_success($graph_data, 'graph_data');
    });
}

function delete_bill(Illuminate\Http\Request $request)
{
    $bill_id = $request->route('bill_id');

    if ($bill_id < 1) {
        return api_error(400, 'Could not remove bill with id ' . $bill_id . '. Invalid id');
    }

    $res = dbDelete('bills', '`bill_id` =  ? LIMIT 1', [$bill_id]);
    if ($res == 1) {
        dbDelete('bill_ports', '`bill_id` =  ? ', [$bill_id]);
        dbDelete('bill_data', '`bill_id` =  ? ', [$bill_id]);
        dbDelete('bill_history', '`bill_id` =  ? ', [$bill_id]);
        dbDelete('bill_history', '`bill_id` =  ? ', [$bill_id]);
        dbDelete('bill_perms', '`bill_id` =  ? ', [$bill_id]);

        return api_success_noresult(200, 'Bill has been removed');
    }

    return api_error(400, 'Could not remove bill with id ' . $bill_id);
}

function check_bill_key_value($bill_key, $bill_value)
{
    $bill_types = ['quota', 'cdr'];

    switch ($bill_key) {
        case 'bill_type':
            if (! in_array($bill_value, $bill_types)) {
                return api_error(400, "Invalid value for $bill_key: $bill_value. Allowed: quota,cdr");
            }
            break;
        case 'bill_cdr':
            if (! is_numeric($bill_value)) {
                return api_error(400, "Invalid value for $bill_key. Must be numeric.");
            }
            break;
        case 'bill_day':
            if ($bill_value < 1 || $bill_value > 31) {
                return api_error(400, "Invalid value for $bill_key. range: 1-31");
            }
            break;
        case 'bill_quota':
            if (! is_numeric($bill_value)) {
                return api_error(400, "Invalid value for $bill_key. Must be numeric");
            }
            break;
        default:
    }

    return true;
}

function create_edit_bill(Illuminate\Http\Request $request)
{
    $data = json_decode($request->getContent(), true);
    if (! $data) {
        return api_error(500, 'Invalid JSON data');
    }
    //check ports
    $ports_add = null;
    if (array_key_exists('ports', $data)) {
        $ports_add = [];
        $ports = $data['ports'];
        foreach ($ports as $port_id) {
            $result = dbFetchRows('SELECT port_id FROM `ports` WHERE `port_id` = ?  LIMIT 1', [$port_id]);
            $result = $result[0];
            if (! is_array($result) || ! array_key_exists('port_id', $result)) {
                return api_error(500, 'Port ' . $port_id . ' does not exists');
            }
            $ports_add[] = $port_id;
        }
    }

    $bill = [];
    //find existing bill for update
    $bill_id = (int) $data['bill_id'];
    $bills = dbFetchRows("SELECT * FROM `bills` WHERE `bill_id` = $bill_id LIMIT 1");

    // update existing bill
    if (is_array($bills) && count($bills) == 1) {
        $bill = $bills[0];

        foreach ($data as $bill_key => $bill_value) {
            $res = check_bill_key_value($bill_key, $bill_value);
            if ($res === true) {
                $bill[$bill_key] = $bill_value;
            } else {
                return $res;
            }
        }
        $update_data = [
            'bill_name' => $bill['bill_name'],
            'bill_type' => $bill['bill_type'],
            'bill_cdr' => $bill['bill_cdr'],
            'bill_day' => $bill['bill_day'],
            'bill_quota' => $bill['bill_quota'],
            'bill_custid' => $bill['bill_custid'],
            'bill_ref' => $bill['bill_ref'],
            'bill_notes' => $bill['bill_notes'],
        ];
        $update = dbUpdate($update_data, 'bills', 'bill_id=?', [$bill_id]);
        if ($update === false || $update < 0) {
            return api_error(500, 'Failed to update existing bill');
        }
    } else {
        // create new bill
        if (array_key_exists('bill_id', $data)) {
            return api_error(500, 'Argument bill_id is not allowed on bill create (auto assigned)');
        }

        $bill_keys = [
            'bill_name',
            'bill_type',
            'bill_cdr',
            'bill_day',
            'bill_quota',
            'bill_custid',
            'bill_ref',
            'bill_notes',
        ];

        if ($data['bill_type'] == 'quota') {
            $data['bill_cdr'] = 0;
        }
        if ($data['bill_type'] == 'cdr') {
            $data['bill_quota'] = 0;
        }

        $missing_keys = '';
        $missing = array_diff_key(array_flip($bill_keys), $data);
        if (count($missing) > 0) {
            foreach ($missing as $missing_key => $dummy) {
                $missing_keys .= " $missing_key";
            }

            return api_error(500, 'Missing parameters: ' . $missing_keys);
        }

        foreach ($bill_keys as $bill_key) {
            $res = check_bill_key_value($bill_key, $data[$bill_key]);
            if ($res === true) {
                $bill[$bill_key] = $data[$bill_key];
            } else {
                return $res;
            }
        }

        $bill_id = dbInsert(
            [
                'bill_name' => $bill['bill_name'],
                'bill_type' => $bill['bill_type'],
                'bill_cdr' => $bill['bill_cdr'],
                'bill_day' => $bill['bill_day'],
                'bill_quota' => $bill['bill_quota'],
                'bill_custid' => $bill['bill_custid'],
                'bill_ref' => $bill['bill_ref'],
                'bill_notes' => $bill['bill_notes'],
            ],
            'bills'
        );

        if ($bill_id === null) {
            return api_error(500, 'Failed to create new bill');
        }
    }

    // set previously checked ports
    if (is_array($ports_add)) {
        dbDelete('bill_ports', "`bill_id` =  $bill_id");
        if (count($ports_add) > 0) {
            foreach ($ports_add as $port_id) {
                dbInsert(['bill_id' => $bill_id, 'port_id' => $port_id, 'bill_port_autoadded' => 0], 'bill_ports');
            }
        }
    }

    return api_success($bill_id, 'bill_id');
}

function update_device(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $data = json_decode($request->getContent(), true);
    $bad_fields = ['device_id', 'hostname'];
    if (empty($data['field'])) {
        return api_error(400, 'Device field to patch has not been supplied');
    } elseif (in_array($data['field'], $bad_fields)) {
        return api_error(500, 'Device field is not allowed to be updated');
    }

    if (is_array($data['field']) && is_array($data['data'])) {
        foreach ($data['field'] as $tmp_field) {
            if (in_array($tmp_field, $bad_fields)) {
                return api_error(500, 'Device field is not allowed to be updated');
            }
        }
        if (count($data['field']) == count($data['data'])) {
            $update = [];
            for ($x = 0; $x < count($data['field']); $x++) {
                $update[$data['field'][$x]] = $data['data'][$x];
            }
            if (dbUpdate($update, 'devices', '`device_id`=?', [$device_id]) >= 0) {
                return api_success_noresult(200, 'Device fields have been updated');
            } else {
                return api_error(500, 'Device fields failed to be updated');
            }
        } else {
            return api_error(500, 'Device fields failed to be updated as the number of fields (' . count($data['field']) . ') does not match the supplied data (' . count($data['data']) . ')');
        }
    } elseif (dbUpdate([$data['field'] => $data['data']], 'devices', '`device_id`=?', [$device_id]) >= 0) {
        return api_success_noresult(200, 'Device ' . $data['field'] . ' field has been updated');
    } else {
        return api_error(500, 'Device ' . $data['field'] . ' field failed to be updated');
    }
}

function rename_device(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $new_hostname = $request->route('new_hostname');
    $new_device = getidbyname($new_hostname);

    if (empty($new_hostname)) {
        return api_error(500, 'Missing new hostname');
    } elseif ($new_device) {
        return api_error(500, 'Device failed to rename, new hostname already exists');
    } else {
        if (renamehost($device_id, $new_hostname, 'api') == '') {
            return api_success_noresult(200, 'Device has been renamed');
        } else {
            return api_error(500, 'Device failed to be renamed');
        }
    }
}

function add_device_group(Illuminate\Http\Request $request)
{
    $data = json_decode($request->getContent(), true);
    if (json_last_error() || ! is_array($data)) {
        return api_error(400, "We couldn't parse the provided json. " . json_last_error_msg());
    }

    $rules = [
        'name' => 'required|string|unique:device_groups',
        'type' => 'required|in:dynamic,static',
        'devices' => 'array|required_if:type,static',
        'devices.*' => 'integer',
        'rules' => 'json|required_if:type,dynamic',
    ];

    $v = Validator::make($data, $rules);
    if ($v->fails()) {
        return api_error(422, $v->messages());
    }

    // Only use the rules if they are able to be parsed by the QueryBuilder
    $query = QueryBuilderParser::fromJson($data['rules'])->toSql();
    if (empty($query)) {
        return api_error(500, "We couldn't parse your rule");
    }

    $deviceGroup = DeviceGroup::make(['name' => $data['name'], 'type' => $data['type'], 'desc' => $data['desc']]);
    $deviceGroup->rules = json_decode($data['rules']);
    $deviceGroup->save();

    if ($data['type'] == 'static') {
        $deviceGroup->devices()->sync($data['devices']);
    }

    return api_success($deviceGroup->id, 'id', 'Device group ' . $deviceGroup->name . ' created', 201);
}

function get_device_groups(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');

    if ($hostname) {
        $device = ctype_digit($hostname) ? Device::find($hostname) : Device::findByHostname($hostname);
        if (is_null($device)) {
            return api_error(404, 'Device not found');
        }
        $query = $device->groups();
    } else {
        $query = DeviceGroup::query();
    }

    $groups = $query->hasAccess(Auth::user())->orderBy('name')->get();

    if ($groups->isEmpty()) {
        return api_error(404, 'No device groups found');
    }

    return api_success($groups->makeHidden('pivot')->toArray(), 'groups', 'Found ' . $groups->count() . ' device groups');
}

function get_devices_by_group(Illuminate\Http\Request $request)
{
    $name = $request->route('name');
    if (! $name) {
        return api_error(400, 'No device group name provided');
    }

    $device_group = ctype_digit($name) ? DeviceGroup::find($name) : DeviceGroup::where('name', $name)->first();

    if (empty($device_group)) {
        return api_error(404, 'Device group not found');
    }

    $devices = $device_group->devices()->get($request->get('full') ? ['*'] : ['devices.device_id']);

    if ($devices->isEmpty()) {
        return api_error(404, 'No devices found in group ' . $name);
    }

    return api_success($devices->makeHidden('pivot')->toArray(), 'devices');
}

function list_vrf(Illuminate\Http\Request $request)
{
    $sql = '';
    $sql_params = [];
    $hostname = $request->get('hostname');
    $vrfname = $request->get('vrfname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    if (is_numeric($device_id)) {
        $permission = check_device_permission($device_id);
        if ($permission !== true) {
            return $permission;
        }
        $sql = ' AND `devices`.`device_id`=?';
        $sql_params = [$device_id];
    }
    if (! empty($vrfname)) {
        $sql = '  AND `vrfs`.`vrf_name`=?';
        $sql_params = [$vrfname];
    }
    if (! Auth::user()->hasGlobalRead()) {
        $sql .= ' AND `vrfs`.`device_id` IN (SELECT device_id FROM devices_perms WHERE user_id = ?)';
        $sql_params[] = Auth::id();
    }

    $vrfs = dbFetchRows("SELECT `vrfs`.* FROM `vrfs` LEFT JOIN `devices` ON `vrfs`.`device_id` = `devices`.`device_id` WHERE `vrfs`.`vrf_name` IS NOT NULL $sql", $sql_params);
    $total_vrfs = count($vrfs);
    if ($total_vrfs == 0) {
        return api_error(404, 'VRFs do not exist');
    }

    return api_success($vrfs, 'vrfs');
}

function get_vrf(Illuminate\Http\Request $request)
{
    $vrfId = $request->route('id');
    if (! is_numeric($vrfId)) {
        return api_error(400, 'Invalid id has been provided');
    }

    $vrf = dbFetchRows('SELECT * FROM `vrfs` WHERE `vrf_id` IS NOT NULL AND `vrf_id` = ?', [$vrfId]);
    $vrf_count = count($vrf);
    if ($vrf_count == 0) {
        return api_error(404, "VRF $vrfId does not exist");
    }

    return api_success($vrf, 'vrf');
}

function list_ipsec(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    // use hostname as device_id if it's all digits
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    if (! is_numeric($device_id)) {
        return api_error(400, 'No valid hostname or device ID provided');
    }

    $ipsec = dbFetchRows('SELECT `D`.`hostname`, `I`.* FROM `ipsec_tunnels` AS `I`, `devices` AS `D` WHERE `I`.`device_id`=? AND `D`.`device_id` = `I`.`device_id`', [$device_id]);

    return api_success($ipsec, 'ipsec');
}

function list_vlans(Illuminate\Http\Request $request)
{
    $sql = '';
    $sql_params = [];
    $hostname = $request->get('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    if (is_numeric($device_id)) {
        $permission = check_device_permission($device_id);
        if ($permission !== true) {
            return $permission;
        }
        $sql = ' AND `devices`.`device_id` = ?';
        $sql_params[] = $device_id;
    }
    if (! Auth::user()->hasGlobalRead()) {
        $sql .= ' AND `vlans`.`device_id` IN (SELECT device_id FROM devices_perms WHERE user_id = ?)';
        $sql_params[] = Auth::id();
    }

    $vlans = dbFetchRows("SELECT `vlans`.* FROM `vlans` LEFT JOIN `devices` ON `vlans`.`device_id` = `devices`.`device_id` WHERE `vlans`.`vlan_vlan` IS NOT NULL $sql", $sql_params);
    $vlans_count = count($vlans);
    if ($vlans_count == 0) {
        return api_error(404, 'VLANs do not exist');
    }

    return api_success($vlans, 'vlans');
}

function list_links(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $sql = '';
    $sql_params = [];

    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    if (is_numeric($device_id)) {
        $permission = check_device_permission($device_id);
        if ($permission !== true) {
            return $permission;
        }
        $sql = ' AND `links`.`local_device_id`=?';
        $sql_params = [$device_id];
    }
    if (! Auth::user()->hasGlobalRead()) {
        $sql .= ' AND `links`.`local_device_id` IN (SELECT device_id FROM devices_perms WHERE user_id = ?)';
        $sql_params[] = Auth::id();
    }
    $links = dbFetchRows("SELECT `links`.* FROM `links` LEFT JOIN `devices` ON `links`.`local_device_id` = `devices`.`device_id` WHERE `links`.`id` IS NOT NULL $sql", $sql_params);
    $total_links = count($links);
    if ($total_links == 0) {
        return api_error(404, 'Links do not exist');
    }

    return api_success($links, 'links');
}

function get_link(Illuminate\Http\Request $request)
{
    $linkId = $request->route('id');
    if (! is_numeric($linkId)) {
        return api_error(400, 'Invalid id has been provided');
    }

    $link = dbFetchRows('SELECT * FROM `links` WHERE `id` IS NOT NULL AND `id` = ?', [$linkId]);
    $link_count = count($link);
    if ($link_count == 0) {
        return api_error(404, "Link $linkId does not exist");
    }

    return api_success($link, 'link');
}

function get_fdb(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');

    if (empty($hostname)) {
        return api_error(500, 'No hostname has been provided');
    }

    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $device = null;
    if ($device_id) {
        // save the current details for returning to the client on successful delete
        $device = Device::find($device_id);
    }

    if (! $device) {
        return api_error(404, "Device $hostname not found");
    }

    return check_device_permission($device_id, function () use ($device) {
        if ($device) {
            $fdb = $device->portsFdb;

            return api_success($fdb, 'ports_fdb');
        }

        return api_error(404, 'Device does not exist');
    });
}

function list_fdb(Illuminate\Http\Request $request)
{
    $mac = $request->route('mac');

    $fdb = PortsFdb::hasAccess(Auth::user())
        ->when(! empty($mac), function (Builder $query) use ($mac) {
            return $query->where('mac_address', $mac);
        })
        ->get();

    if ($fdb->isEmpty()) {
        return api_error(404, 'Fdb do not exist');
    }

    return api_success($fdb, 'ports_fdb');
}

function list_sensors()
{
    $sensors = Sensor::hasAccess(Auth::user())->get();
    $total_sensors = $sensors->count();
    if ($total_sensors == 0) {
        return api_error(404, 'Sensors do not exist');
    }

    return api_success($sensors, 'sensors');
}

function list_ip_addresses()
{
    $ipv4_addresses = dbFetchRows('SELECT * FROM `ipv4_addresses`');
    $ipv6_addresses = dbFetchRows('SELECT * FROM `ipv6_addresses`');
    $ip_addresses_count = count(array_merge($ipv4_addresses, $ipv6_addresses));
    if ($ip_addresses_count == 0) {
        return api_error(404, 'IP addresses do not exist');
    }

    return api_success(array_merge($ipv4_addresses, $ipv6_addresses), 'ip_addresses');
}

function list_ip_networks()
{
    $ipv4_networks = dbFetchRows('SELECT * FROM `ipv4_networks`');
    $ipv6_networks = dbFetchRows('SELECT * FROM `ipv6_networks`');
    $ip_networks_count = count(array_merge($ipv4_networks, $ipv6_networks));
    if ($ip_networks_count == 0) {
        return api_error(404, 'IP networks do not exist');
    }

    return api_success(array_merge($ipv4_networks, $ipv6_networks), 'ip_networks');
}

function list_arp(Illuminate\Http\Request $request)
{
    $query = $request->route('query');
    $cidr = $request->route('cidr');
    $hostname = $request->get('device');

    if (empty($query)) {
        return api_error(400, 'No valid IP/MAC provided');
    } elseif ($query === 'all' && empty($hostname)) {
        return api_error(400, 'Device argument is required when requesting all entries');
    }

    if ($query === 'all') {
        $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
        $arp = dbFetchRows('SELECT `ipv4_mac`.* FROM `ipv4_mac` LEFT JOIN `ports` ON `ipv4_mac`.`port_id` = `ports`.`port_id` WHERE `ports`.`device_id` = ?', [$device_id]);
    } elseif ($cidr) {
        try {
            $ip = new IPv4("$query/$cidr");
            $arp = dbFetchRows(
                'SELECT * FROM `ipv4_mac` WHERE (inet_aton(`ipv4_address`) & ?) = ?',
                [ip2long($ip->getNetmask()), ip2long($ip->getNetworkAddress())]
            );
        } catch (InvalidIpException $e) {
            return api_error(400, 'Invalid Network Address');
        }
    } elseif (filter_var($query, FILTER_VALIDATE_MAC)) {
        $mac = \LibreNMS\Util\Rewrite::macToHex($query);
        $arp = dbFetchRows('SELECT * FROM `ipv4_mac` WHERE `mac_address`=?', [$mac]);
    } else {
        $arp = dbFetchRows('SELECT * FROM `ipv4_mac` WHERE `ipv4_address`=?', [$query]);
    }

    return api_success($arp, 'arp');
}

function list_services(Illuminate\Http\Request $request)
{
    $where = [];
    $params = [];

    // Filter by State
    if ($request->has('state')) {
        $where[] = '`service_status`=?';
        $params[] = $request->get('state');
        $where[] = "`service_disabled`='0'";
        $where[] = "`service_ignore`='0'";

        if (! is_numeric($request->get('state'))) {
            return api_error(400, 'No valid service state provided, valid option is 0=Ok, 1=Warning, 2=Critical');
        }
    }

    //Filter by Type
    if ($request->has('type')) {
        $where[] = '`service_type` LIKE ?';
        $params[] = $request->get('type');
    }

    //GET by Host
    $hostname = $request->route('hostname');
    if ($hostname) {
        $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
        $where[] = '`device_id` = ?';
        $params[] = $device_id;

        if (! is_numeric($device_id)) {
            return api_error(500, 'No valid hostname or device id provided');
        }
    }

    $query = 'SELECT * FROM `services`';

    if (! empty($where)) {
        $query .= ' WHERE ' . implode(' AND ', $where);
    }
    $query .= ' ORDER BY `service_ip`';
    $services = [dbFetchRows($query, $params)]; // double array for backwards compat :(

    return api_success($services, 'services');
}

function list_logs(Illuminate\Http\Request $request, Router $router)
{
    $type = $router->current()->getName();
    $hostname = $request->route('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);

    $count_query = 'SELECT COUNT(*)';
    $param = [];
    if ($type === 'list_eventlog') {
        $query = ' FROM eventlog LEFT JOIN `devices` ON `eventlog`.`device_id`=`devices`.`device_id` WHERE 1';
        $full_query = 'SELECT `devices`.`hostname`, `devices`.`sysName`, `eventlog`.`device_id` as `host`, `eventlog`.*'; // inject host for backward compat
        $timestamp = 'datetime';
        $id_field = 'event_id';
    } elseif ($type === 'list_syslog') {
        $query = ' FROM syslog LEFT JOIN `devices` ON `syslog`.`device_id`=`devices`.`device_id` WHERE 1';
        $full_query = 'SELECT `devices`.`hostname`, `devices`.`sysName`, `syslog`.*';
        $timestamp = 'timestamp';
        $id_field = 'seq';
    } elseif ($type === 'list_alertlog') {
        $query = ' FROM alert_log LEFT JOIN `devices` ON `alert_log`.`device_id`=`devices`.`device_id` WHERE 1';
        $full_query = 'SELECT `devices`.`hostname`, `devices`.`sysName`, `alert_log`.*';
        $timestamp = 'time_logged';
        $id_field = 'id';
    } elseif ($type === 'list_authlog') {
        $query = ' FROM authlog WHERE 1';
        $full_query = 'SELECT `authlog`.*';
        $timestamp = 'datetime';
        $id_field = 'id';
    } else {
        $query = ' FROM eventlog LEFT JOIN `devices` ON `eventlog`.`device_id`=`devices`.`device_id` WHERE 1';
        $full_query = 'SELECT `devices`.`hostname`, `devices`.`sysName`, `eventlog`.*';
        $timestamp = 'datetime';
    }

    $start = (int) $request->get('start', 0);
    $limit = (int) $request->get('limit', 50);
    $from = $request->get('from');
    $to = $request->get('to');

    if (is_numeric($device_id)) {
        $query .= ' AND `devices`.`device_id` = ?';
        $param[] = $device_id;
    }

    if ($from) {
        if (is_numeric($from)) {
            $query .= " AND $id_field >= ?";
        } else {
            $query .= " AND $timestamp >= ?";
        }
        $param[] = $from;
    }

    if ($to) {
        if (is_numeric($to)) {
            $query .= " AND $id_field <= ?";
        } else {
            $query .= " AND $timestamp <= ?";
        }
        $param[] = $to;
    }

    $count_query = $count_query . $query;
    $count = dbFetchCell($count_query, $param);
    $full_query = $full_query . $query . " ORDER BY $timestamp ASC LIMIT $start,$limit";
    $logs = dbFetchRows($full_query, $param);

    if ($type === 'list_alertlog') {
        foreach ($logs as $index => $log) {
            $logs[$index]['details'] = json_decode(gzuncompress($log['details']), true);
        }
    }

    return api_success($logs, 'logs', null, 200, null, ['total' => $count]);
}

function validate_column_list($columns, $tableName)
{
    static $schema;
    if (is_null($schema)) {
        $schema = new \LibreNMS\DB\Schema();
    }

    $column_names = is_array($columns) ? $columns : explode(',', $columns);
    $valid_columns = $schema->getColumns($tableName);
    $invalid_columns = array_diff(array_map('trim', $column_names), $valid_columns);

    if (count($invalid_columns) > 0) {
        return api_error(400, 'Invalid columns: ' . join(',', $invalid_columns));
    }

    return true;
}

function missing_fields($required_fields, $data)
{
    foreach ($required_fields as $required) {
        if (empty($data[$required])) {
            return true;
        }
    }

    return false;
}

function add_service_for_host(Illuminate\Http\Request $request)
{
    $hostname = $request->route('hostname');
    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
    $data = json_decode($request->getContent(), true);
    if (missing_fields(['type'], $data)) {
        return api_error(400, 'Required fields missing (hostname and type needed)');
    }
    if (! in_array($data['type'], list_available_services())) {
        return api_error(400, 'The service ' . $data['type'] . " does not exist.\n Available service types: " . implode(', ', list_available_services()));
    }
    $service_type = $data['type'];
    $service_ip = $data['ip'];
    $service_desc = $data['desc'] ? $data['desc'] : '';
    $service_param = $data['param'] ? $data['param'] : '';
    $service_ignore = $data['ignore'] ? true : false; // Default false
    $service_id = add_service($device_id, $service_type, $service_desc, $service_ip, $service_param, (int) $service_ignore);
    if ($service_id != false) {
        return api_success_noresult(201, "Service $service_type has been added to device $hostname (#$service_id)");
    }

    return api_error(500, 'Failed to add the service');
}

function add_parents_to_host(Illuminate\Http\Request $request)
{
    $data = json_decode($request->getContent(), true);
    $device_id = $request->route('id');
    $device_id = ctype_digit($device_id) ? $device_id : getidbyname($device_id);

    $parent_ids = [];
    foreach (explode(',', $data['parent_ids']) as $hostname) {
        $hostname = trim($hostname);
        $parent_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
        if (empty($parent_id)) {
            return api_error(400, 'Parent device IDs/Hostname does not exist: ' . $hostname);
        }
        $parent_ids[] = $parent_id;
    }

    if (validateDeviceIds($parent_ids) && validateDeviceIds([$device_id]) && (! in_array($device_id, $parent_ids))) {
        Device::find($device_id)->parents()->sync($parent_ids);

        return api_success_noresult(201, 'Device dependencies have been saved');
    }

    return api_error(400, 'Check your parent and device IDs');
}

function del_parents_from_host(Illuminate\Http\Request $request)
{
    $device_id = $request->route('id');
    $device_id = ctype_digit($device_id) ? $device_id : getidbyname($device_id);
    $data = json_decode($request->getContent(), true);
    if (! validateDeviceIds([$device_id])) {
        return api_error(400, 'Check your device ID!');
    }
    $device = Device::find($device_id);
    if (! empty($data['parent_ids'])) {
        foreach (explode(',', $data['parent_ids']) as $hostname) {
            $hostname = trim($hostname);
            $parent_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
            if (empty($parent_id)) {
                return api_error(400, 'Parent device IDs/Hostname does not exist: ' . $hostname);
            }
            $parent_ids[] = $parent_id;
        }

        //remove parents included in the request if they are valid device ids
        $result = validateDeviceIds($parent_ids) ? $device->parents()->detach($parent_ids) : false;
    }
    if (is_null($result)) {
        //$result doesn't exist so $data['parent_ids'] is empty
        $result = $device->parents()->detach(); //remove all parents
    }
    if ($result) {
        return api_success_noresult(201, 'All device dependencies have been removed');
    }

    return api_error(400, 'Device dependency cannot be deleted check device and parents ids');
}

function validateDeviceIds($ids)
{
    foreach ($ids as $id) {
        $invalidId = ! is_numeric($id) || $id < 1 || is_null(Device::find($id));
        if ($invalidId) {
            return false;
        }
    }

    return true;
}

function add_location(Illuminate\Http\Request $request)
{
    $data = json_decode($request->getContent(), true);
    if (missing_fields(['location', 'lat', 'lng'], $data)) {
        return api_error(400, 'Required fields missing (location, lat and lng needed)');
    }
    // Set the location
    $timestamp = date('Y-m-d H:m:s');
    $insert = ['location' => $data['location'], 'lat' => $data['lat'], 'lng' => $data['lng'], 'timestamp' => $timestamp];
    $location_id = dbInsert($insert, 'locations');
    if ($location_id != false) {
        return api_success_noresult(201, "Location added with id #$location_id");
    }

    return api_error(500, 'Failed to add the location');
}

function edit_location(Illuminate\Http\Request $request)
{
    $location = $request->route('location_id_or_name');
    if (empty($location)) {
        return api_error(400, 'No location has been provided to edit');
    }
    $location_id = ctype_digit($location) ? $location : get_location_id_by_name($location);
    $data = json_decode($request->getContent(), true);
    if (empty($location_id)) {
        return api_error(400, 'Failed to delete location');
    }
    $result = dbUpdate($data, 'locations', '`id` = ?', [$location_id]);
    if ($result == 1) {
        return api_success_noresult(201, 'Location updated successfully');
    }

    return api_error(500, 'Failed to update location');
}

function get_location_id_by_name($location)
{
    return dbFetchCell('SELECT id FROM locations WHERE location = ?', $location);
}

function del_location(Illuminate\Http\Request $request)
{
    $location = $request->route('location');
    if (empty($location)) {
        return api_error(400, 'No location has been provided to delete');
    }
    $location_id = get_location_id_by_name($location);
    if (empty($location_id)) {
        return api_error(400, "Failed to delete $location (Does not exists)");
    }
    $data = [
        'location_id' => 0,
    ];
    dbUpdate($data, 'devices', '`location_id` = ?', [$location_id]);
    $result = dbDelete('locations', '`location` = ? ', [$location]);
    if ($result == 1) {
        return api_success_noresult(201, "Location $location has been deleted successfully");
    }

    return api_error(500, "Failed to delete the location $location");
}

function del_service_from_host(Illuminate\Http\Request $request)
{
    $service_id = $request->route('id');
    if (empty($service_id)) {
        return api_error(400, 'No service_id has been provided to delete');
    }
    $result = delete_service($service_id);
    if ($result == 1) {
        return api_success_noresult(201, 'Service has been deleted successfully');
    }

    return api_error(500, 'Failed to delete the service');
}

function edit_service_for_host(Illuminate\Http\Request $request)
{
    $service_id = $request->route('id');
    $data = json_decode($request->getContent(), true);
    if (edit_service($data, $service_id) == 1) {
        return api_success_noresult(201, 'Service updated successfully');
    }

    return api_error(500, "Failed to update the service with id $service_id");
}

/**
 * Display Librenms Instance Info
 */
function server_info()
{
    $versions = version_info();

    return api_success([
        $versions,
    ], 'system');
}
