#include <SPI.h>
#include <Wire.h>
#include <WiFi.h>
#include <time.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SH110X.h>


/* Uncomment the initialize the I2C address , uncomment only one, If you get a totally blank screen try the other*/
#define i2c_Address 0x3d //initialize with the I2C addr 0x3C Typically eBay OLED's
//#define i2c_Address 0x3d //initialize with the I2C addr 0x3D Typically Adafruit OLED's

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET -1   //   QT-PY / XIAO
Adafruit_SH1106G display = Adafruit_SH1106G(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

time_t rawtime = time(nullptr);
struct tm* timeinfo = localtime(&rawtime);

int GMTOffset = -28800;  //Replace with your GMT Offset in seconds
int daylightOffset = 0;  //Replace with your daylight savings offset in seconds

void setup();
void screenA();
void loop() ;



void setup() {

  // put your setup code here, to run once:
  Serial.begin(115200);
  display.begin(i2c_Address, true); // Address 0x3C default
 //display.setContrast (0); // dim display
  delay(2000);
  display.clearDisplay();


  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());
  configTime(GMTOffset, daylightOffset, "pool.ntp.org","time.nist.gov");
  screenA();



}

void screenA(){

  display.clearDisplay();
  int radius = 35;
  display.drawCircle(display.width()/2, display.height()/2, 2, SH110X_WHITE);
  //draw clock
  for( int i=0; i < 360;i= i + 30 ){
  float angle = i ; 
  angle=(angle/57.29577951) ; 
  int x1=(64+(sin(angle)*radius));
  int y1=(32-(cos(angle)*radius));
  int x2=(64+(sin(angle)*(radius-5)));
  int y2=(32-(cos(angle)*(radius-5)));
  display.drawLine(x1,y1,x2,y2,SH110X_WHITE);
  }

  //draw second hand
  float angle = timeinfo->tm_sec*6 ;
  angle=(angle/57.29577951) ; 
  int x2=(64+(sin(angle)*(radius)));
  int y2=(32-(cos(angle)*(radius)));
  display.drawLine(64,32,x2,y2,SH110X_WHITE);

  // draw minute hand
  angle = timeinfo->tm_min * 6 ;
  angle=(angle/57.29577951) ; 
  x2=(64+(sin(angle)*(radius-3)));
  y2=(32-(cos(angle)*(radius-3)));
  display.drawLine(64,32,x2,y2,SH110X_WHITE);

  // draw hour hand
  angle = timeinfo->tm_hour * 30 + int((timeinfo->tm_min / 12) * 6 );
  angle=(angle/57.29577951) ; 
  x2=(64+(sin(angle)*(radius-11)));
  y2=(32-(cos(angle)*(radius-11)));
  display.drawLine(64,32,x2,y2,SH110X_WHITE);
 
  display.display();
  delay(100);
  //display.clearDisplay();
  }


void loop(){
  rawtime = time(nullptr);
  timeinfo = localtime(&rawtime);
   screenA();
}