<?php

class RadioService
{

    private $CI;

    const TOKEN_MAXAGE = 3600;

    const APP_ID = 75;
    

    public function __construct()
    {
        $this->CI = &get_instance();
    }

    public function getAppId($appId = null) {
        return $appId ? $appId : self::APP_ID;
    }

    public function checkToken()
    {
        $key = $this->CI->input->server('HTTP_ACCESS_TOKEN');
        $key = $this->CI->rest->db->where('key', $key)->get(config_item('rest_keys_table'));
        if ($key->num_rows() == 0) {
            return 401;
        } else if ($key->row()->date_created < time() - self::TOKEN_MAXAGE) {
            return 402;
        }
    }

    public function getSchedule($categoryId, $day)
    {
        $this->CI->load->model('station_schedule_model');
        return $this->CI->station_schedule_model->findSchedulesByCategoryIdAndDayName($categoryId, $day)->result();
    }

    public function getApp($appId)
    {
        $this->CI->load->model('app_model');
        $app = $this->CI->app_model->findByAppId($appId)->row();
        $customInfos = unserialize($app->customInfo);
        $app->customInfo = array();
        for ($i = 0; $i < count($customInfos['link']); $i++) {
            foreach ($customInfos as $field => $values) {
                $app->customInfo[$i][$field] = $values[$i];
            }
        }
        $app->customInfo = array_filter($app->customInfo, function ($info) {
            return count(array_filter(array_values($info)));
        });
        return $app;
    }

    public function getCategory($appId)
    {
        $this->CI->load->model('category_model');
        $categories = $this->CI->category_model->findCategoriesByAppId($appId)->result();
        return $categories;
    }
}