<?php

use LibreNMS\Config;
use LibreNMS\Util\IP;

if (Config::get('enable_sla') && $device['os_group'] == 'cisco') {
    $slas = snmp_walk($device, 'ciscoRttMonMIB.ciscoRttMonObjects.rttMonCtrl', '-Osq', '+CISCO-RTTMON-MIB');

    $sla_table = [];
    foreach (explode("\n", $slas) as $sla) {
        $key_val = explode(' ', $sla, 2);
        if (count($key_val) != 2) {
            $key_val[] = '';
        }

        $key = $key_val[0];
        $value = $key_val[1];

        $prop_id = explode('.', $key);
        if ((count($prop_id) != 2) || ! ctype_digit($prop_id[1])) {
            continue;
        }

        $property = $prop_id[0];
        $id = intval($prop_id[1]);

        $sla_table[$id][$property] = trim($value);
    }

    // var_dump($sla_table);
    // Get existing SLAs
    $existing_slas = dbFetchColumn('SELECT `sla_id` FROM `slas` WHERE `device_id` = :device_id AND `deleted` = 0', ['device_id' => $device['device_id']]);

    foreach ($sla_table as $sla_nr => $sla_config) {
        $query_data = [
            'device_id' => $device['device_id'],
            'sla_nr'    => $sla_nr,
        ];
        $sla_id = dbFetchCell('SELECT `sla_id` FROM `slas` WHERE `device_id` = :device_id AND `sla_nr` = :sla_nr', $query_data);

        $data = [
            'device_id' => $device['device_id'],
            'sla_nr'    => $sla_nr,
            'owner'     => $sla_config['rttMonCtrlAdminOwner'],
            'tag'       => $sla_config['rttMonCtrlAdminTag'],
            'rtt_type'  => $sla_config['rttMonCtrlAdminRttType'],
            'status'    => ($sla_config['rttMonCtrlAdminStatus'] == 'active') ? 1 : 0,
            'opstatus'  => ($sla_config['rttMonLatestRttOperSense'] == 'ok') ? 0 : 2,
            'deleted'   => 0,
        ];

        // Some fallbacks for when the tag is empty
        if (! $data['tag']) {
            switch ($data['rtt_type']) {
                case 'http':
                    $data['tag'] = $sla_config['rttMonEchoAdminURL'];
                    break;

                case 'dns':
                    $data['tag'] = $sla_config['rttMonEchoAdminTargetAddressString'];
                    break;

                case 'echo':
                    $data['tag'] = IP::fromHexString($sla_config['rttMonEchoAdminTargetAddress'], true);
                    break;

                case 'jitter':
                    if ($sla_config['rttMonEchoAdminCodecType'] != 'notApplicable') {
                        $codec_info = ' (' . $sla_config['rttMonEchoAdminCodecType'] . ' @ ' . preg_replace('/milliseconds/', 'ms', $sla_config['rttMonEchoAdminCodecInterval']) . ')';
                    } else {
                        $codec_info = '';
                    }
                    $data['tag'] = IP::fromHexString($sla_config['rttMonEchoAdminTargetAddress'], true) . ':' . $sla_config['rttMonEchoAdminTargetPort'] . $codec_info;
                    break;
            }//end switch
        }//end if

        if (! $sla_id) {
            $sla_id = dbInsert($data, 'slas');
            echo '+';
        } else {
            // Remove from the list
            $existing_slas = array_diff($existing_slas, [$sla_id]);

            dbUpdate($data, 'slas', 'sla_id = ?', [$sla_id]);
            echo '.';
        }
    }//end foreach

    // Mark all remaining SLAs as deleted
    foreach ($existing_slas as $existing_sla) {
        dbUpdate(['deleted' => 1], 'slas', 'sla_id = ?', [$existing_sla]);
        echo '-';
    }

    echo "\n";
}