#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Wire.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

String getText() {
  HTTPClient http;
  http.useHTTP10(true);
  http.begin("https://encrypt.ga/esp32.php");//link
  http.GET();
  String result = http.getString();

  Serial.println(result);

  DynamicJsonDocument doc(2048);
  DeserializationError error = deserializeJson(doc, result);

  // Test if parsing succeeds.
  if (error) {
    Serial.print("deserializeJson() failed: ");
    Serial.println(error.c_str());
    return "<error>";
  }

  String header = doc["header"].as<String>();//text
  String body = doc["body"].as<String>();
  http.end();
  return  header + " " + body;//output text
}

void setup() {
  Serial.begin(115200);
  delay(10);

  WiFi.begin("Wokwi-GUEST", "");//wifi SSID, password
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);
  }

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }

  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0, 0);
  display.println("Connecting to Wi-Fi...");
  display.display(); 

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

void loop() {
  String text = getText();
  /*LCD.clear();
  //output the text to LCD
  for (int line = 0; line < 4; line++) {
    LCD.setCursor(0, line);
    LCD.print(text.substring(line * 20, (line + 1) * 20));
  }*/
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0, 0);
  display.println(text);
  display.display(); 
  delay(4000);
}