/* ----------------------------------------------------------------------------
 * "THE TSCHUNK LICENSE" (Revision 42):
 * <christian@staudte.it> wrote this file. As long as you retain this notice 
 * you can do whatever you want with this stuff. If we meet some day, and you 
 * think this stuff is worth it, you can buy me a Tschunk in return.
 * ---------------------------------------------------------------------------*/

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266httpUpdate.h>

#ifdef PUBLIC_SIGN_KEY

const char pubkey[] PROGMEM = PUBLIC_SIGN_KEY;

BearSSL::PublicKey *signPubKey = nullptr;
BearSSL::HashSHA256 *hash;
BearSSL::SigningVerifier *sign;

void signedUpdatesHelperInit() {
	signPubKey = new BearSSL::PublicKey(pubkey);
	hash = new BearSSL::HashSHA256();
	sign = new BearSSL::SigningVerifier(signPubKey);
	Update.installSignature(hash, sign);
}

String signedUpdatesHelperRun(WiFiClient& wifi, const String& url, const String& currentVersion = "") {
	t_httpUpdate_return ret = ESPhttpUpdate.update(wifi, url, currentVersion);
	if (ret == HTTP_UPDATE_FAILED)
		return ESPhttpUpdate.getLastErrorString();
	return String();
}

#endif