<?php

// Returns a new ID for device to use for future communication.
$router->post('/api/register', function($req) {
    $data = $req->getJSONBody();
    //echo "Body: ".var_dump($data)."\n";

    // Verify a mac address was sent...
    if(!isset($data['mac_address']) || !preg_match("/^[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]$/i",$data['mac_address'])) {
        echo $data['mac_address']." does not match a mac address.\n";
        http_response_code(400);
        return;
    }
    /*
    $newDevice = [
        'id' => 'device123',
        'mac_address' => $data['mac_address'],
        'ip_address' => '192.168.1.2',
        'seen_ip_address' => '192.168.1.2',
        'firmware_version' => '1.0.1',
        'temperature_offset' => 0,
        'humidity_offset' => 0,
        'last_updated' => date('Y-m-d H:i:s'),
        'last_seen' => date('Y-m-d H:i:s')
    ];
    $deviceDb->addDevice($newDevice);
     */
    http_response_code(200);
});

// Device reports temperature back on this endpoint.
$router->post('/api/report', function($req) {
    echo 'body:' . var_dump($req->getBody()) . "\n";
    DumpHTTPRequestToFile::execute("/tmp/out.txt");
    http_response_code(200);
});

$router->get('/api/update', function() {
    if ( $_SERVER['HTTP_USER_AGENT'] == 'ESP8266-http-Update' && isset($_SERVER['HTTP_X_ESP8266_SKETCH_MD5']) ) {
        $user_agent        = $_SERVER['HTTP_USER_AGENT'];
        $curr_firmware_md5 = $_SERVER['HTTP_X_ESP8266_SKETCH_MD5'];
        $firmware_file     = __DIR__ . '/firmware.bin';
        $firmware_md5      = md5_file($firmware_file);
        echo "USER_AGENT -> ESP8266-http-Update\n";
	echo 'X_ESP8266_SKETCH_MD5 -> ' . $_SERVER['HTTP_X_ESP8266_SKETCH_MD5'] . "\n";
	echo 'MD5 file hash of ' . $firmware_file . ': ' . $firmware_md5;
	if ( $curr_firmware_md5 == $firmware_md5 ) {
            http_response_code(204);
        }
        else {
            $fwdata = file_get_contents($firmware_file);
            header('Content-Length:' . strlen($fwdata));
            echo $fwdata;
            http_response_code(200);
        }
        return;
    }

    http_response_code(400);
});