#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>

const char* host = "tillmannkloeckner.de";

unsigned char epd_bitmap_herz [] PROGMEM = {
	0x80, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x03, 0xc0, 0x3c, 0x07, 0xe0, 0x7e, 0x0f, 0xf0, 0x7f, 
	0xbe, 0x70, 0xff, 0xfe, 0x70, 0xf1, 0xff, 0xf0, 0xf3, 0xff, 0xe0, 0xf3, 0xfb, 0xc0, 0xff, 0xe3, 
	0xc0, 0xfc, 0x2f, 0x80, 0x7f, 0x8f, 0x80, 0x3f, 0xff, 0x80, 0x0f, 0xff, 0x00, 0x01, 0xfe, 0x00, 
	0x00, 0xfc, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x10
};

String herz = "0x80, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x03, 0xc0, 0x3c, 0x07, 0xe0, 0x7e, 0x0f, 0xf0, 0x7f, 0xbe, 0x70, 0xff, 0xfe, 0x70, 0xf1, 0xff, 0xf0, 0xf3, 0xff, 0xe0, 0xf3, 0xfb, 0xc0, 0xff, 0xe3, 0xc0, 0xfc, 0x2f, 0x80, 0x7f, 0x8f, 0x80, 0x3f, 0xff, 0x80, 0x0f, 0xff, 0x00, 0x01, 0xfe, 0x00, 0x00, 0xfc, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x10";



void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);

  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  delay(1000);


  Serial.println("HTTP-Begin");

Serial.print("connecting to ");
  Serial.println(host);
  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  HTTPClient http;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
    return;
  }
// We now create a URI for the request
  String url = "http://"+ (String) host + "/api/image.php?id=5";
   
  Serial.print("Requesting URL: ");
  Serial.println(url);


http.useHTTP10(true);
http.begin(client, url);
http.GET();

DynamicJsonDocument doc(2048);
deserializeJson(doc, http.getStream());

//Serial.print(http.getString());
Serial.println("");
Serial.print("ID  = ");
Serial.println(doc["id"].as<long>());
Serial.print("black= ");
Serial.println(doc["black"].as<String>());

Serial.println(herz);
//String black = doc["black"].as<String>();
String black = herz;

// Umrechnen von String zu char 
  char zwischen [4];
  //int string_length =  sizeof(black)/sizeof(unsigned char);
  int string_length =  black.length();
  int image_length = (int)string_length/6;
  unsigned char herz_char[image_length];
  int u=0;
  int v=0;
    for(int i = 0; i < string_length; i++) 
  {
    
    if ((black[i]!=',')&&(black[i]!=' '))
    {
      zwischen[u]=black[i];
      u++;
    }
    else if (black[i]!=' ')
    {
      herz_char[v] = strtol(zwischen,NULL,16);
      v++;
      u=0;

    }
    else 
    {
      //es ist ein leerzeichen

    }


  }

for(int j =  0; j < 32; j++)
{
  Serial.print("###: 0x");
  Serial.print(herz_char[j],HEX);
  Serial.print("-->: 0x");
  Serial.println(epd_bitmap_herz[j],HEX);
  
}

  Serial.print("string_length:");
  Serial.println(string_length);

  Serial.print("image_length:");
  Serial.println(image_length);

// Disconnect
http.end();



}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}