<?php

/**
 * BlueWeather
 *
 * PHP version 7.2
 *
 * @param locId
 * @param range   (range[from]: from UNIX time; range[to]: to UNIX time)
 * @param maxVals (maximum measvals to be transmitted; if more are present 
 *                in the timespan, the avarage will be calculated)
 *
 * @category Tools
 * @package  BlueWeather
 * @author   Dorian Zedler <dorian@itsblue.de>
 * @license  GPLV3 gpl.com
 * @link     itsblue.de
 */

require_once './config.php';
require_once './blueweather.php';

header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');

$blueweather = new BlueWeather($config);

//$_GET['command'] = '{"header":1001,"body":"undefined"}';

if (isset($_GET['locId'])) {
    // get data of given location
    $data = $blueweather->getLocationData(
        $_GET['locId'], $_GET['range'], $_GET['maxVals']
    );
} elseif (isset($_POST['submitSensorData'])) {
    // sensor data is being submited
    $sensorData = json_decode($_POST['submitSensorData'], true);
    $ret =  $blueweather->processSensorData($sensorData);
    $data = $ret;
} elseif (isset($_GET['command'])) {
    // some user-data api request
    $request = json_decode($_GET['command'], true);
    if (!$request || !isset($request['header'])) {
        $data = array("header"=>400);
    } else {
        switch ($request['header']) {
        case 1000:
            // user login
            if (!isset($request['body']['username']) || !isset($request['body']['password'])) {
                $data = array("header"=>400);
            } else {
                $token = $blueweather->loginUser(
                    $request['body']['username'], 
                    $request['body']['password']
                );
                if ($token !== '') {
                    $data = array("header"=>200, "body"=>$token);
                } else {
                    $data = array("header"=>401);
                }
            }
            break;
        case 1001:
            // check session
            if (!isset($request['body'])) {
                $data = array("header"=>400);
            } else {
                $ret = $blueweather->getUserInfo(
                    $blueweather->checkSession($request['body'])
                );

                if ($ret === -1) {
                    $data = array("header"=>401);
                } else {
                    $data = array("header"=>200, "data"=>$ret);
                }

            }
        }
    }
} else {
    $data = $blueweather->getAllLocations();
}

http_response_code(200);

echo json_encode($data);