<?php

namespace LibreNMS\Alert;

use Illuminate\Support\Str;
use LibreNMS\Config;
use LibreNMS\Enum\AlertState;
use LibreNMS\Interfaces\Alert\Transport as TransportInterface;

abstract class Transport implements TransportInterface
{
    protected $config;

    /**
     * Transport constructor.
     * @param null $transport_id
     */
    public function __construct($transport_id = null)
    {
        if (! empty($transport_id)) {
            $sql = 'SELECT `transport_config` FROM `alert_transports` WHERE `transport_id`=?';
            $this->config = json_decode(dbFetchCell($sql, [$transport_id]), true);
        }
    }

    /**
     * Helper function to parse free form text box defined in ini style to key value pairs
     *
     * @param string $input
     * @return array
     */
    protected function parseUserOptions($input)
    {
        $options = [];
        foreach (explode(PHP_EOL, $input) as $option) {
            if (Str::contains($option, '=')) {
                [$k,$v] = explode('=', $option, 2);
                $options[$k] = trim($v);
            }
        }

        return $options;
    }

    /**
     * Get the hex color string for a particular state
     * @param int $state State code from alert
     * @return string Hex color, default to #337AB7 blue if state unrecognised
     */
    public static function getColorForState($state)
    {
        $colors = [
            AlertState::CLEAR        => Config::get('alert_colour.ok'),
            AlertState::ACTIVE       => Config::get('alert_colour.bad'),
            AlertState::ACKNOWLEDGED => Config::get('alert_colour.acknowledged'),
            AlertState::WORSE        => Config::get('alert_colour.worse'),
            AlertState::BETTER       => Config::get('alert_colour.better'),
        ];

        return isset($colors[$state]) ? $colors[$state] : '#337AB7';
    }
}