<?php

$router->get('/favicon.ico', function() {
    http_response_code(404);
});

$router->get('/update', function() {
    //(new DumpHTTPRequestToFile)->execute( __DIR__ . '/dumprequest.txt');

    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);
});