#include "WiFi.h"
#include "PubSubClient.h"
#include "ESP32Servo.h"
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

char clientId[50];
// Declare date variable
int servoPin1 = 12;
Servo servo1;
int servoPin2 = 4;
Servo servo2;
int servoPin3 = 15;
Servo servo3;

// Configure Seven segment
WiFiClient espClient;
PubSubClient client(espClient);

int ledPin1 = 4;
int ledPin2 = 12;
int ledPin3 = 13;
int ledPin4 = 5;

Adafruit_SSD1306 display(128, 64, &Wire, 1);
 
void setup() 
{
  Serial.begin(9600);
  servo1.attach(servoPin1, 500, 2400);
  servo2.attach(servoPin2, 500, 2400);
  servo3.attach(servoPin3, 500, 2400);
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3c))
  {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);

  Serial.print("Connecting to ....");

  WiFi.mode(WIFI_STA);
  WiFi.begin("Wokwi-GUEST", "",6);
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(100);
  }

  client.setServer("broker.emqx.io", 1883);
  client.setCallback(callback);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);

}

void mqttReconnect() 
{
  while (!client.connected()) 
  {
    Serial.print("Attempting MQTT connection...");
    if (client.connect(clientId)) 
    {
      Serial.println("Connected");
      client.subscribe("topicName/time");
    } 
    else 
    {
      Serial.println("Connection failed trying again in 10 seconds");
      delay(5000);
    }
  }
}

void callback(char* topic, byte* message, unsigned int length) 
{
  Serial.print("Message arrived on topic: ");
  Serial.print(topic);
  Serial.print(". Message: ");
  String stMessage;
  for (int i = 0; i < length; i++)
  {
    Serial.print((char)message[i]);
    stMessage += (char)message[i];
  }
  if(stMessage =="1" )
  {
    Serial.println("1");
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Release Orbital Access Arm");
    display.display();
    servo1.write(180);
  }
  else if(stMessage =="2" )
  {
    Serial.println("2");
    digitalWrite(ledPin1, HIGH);
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Main engine gimbal test and lift beanie cap");
    display.display();
    servo2.write(0);
  }
  else if(stMessage =="3" )
  {
    Serial.println("3");
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Activate Hydrogen Burn off system");
    display.display();
    digitalWrite(ledPin2, HIGH);
  }
  else if(stMessage =="4" )
  {
    Serial.println("4");
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Main engine ignite");
    display.display();
    digitalWrite(ledPin3, HIGH);
  }
  else if(stMessage =="5" )
  {
    Serial.println("5");
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Hydrogen Vent Arm | Release Tail Surface Mass | Detonate Hold-Down Bolts");
    display.display();
    servo3.write(360);
  }
  else if(stMessage =="6" )
  {
    Serial.println("6");
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Ignite Both SRBs");
    display.display();
    digitalWrite(ledPin4, HIGH);

  }
  
}
void loop() 
{
  if (!client.connected()) 
  {
    mqttReconnect();
  }
  client.loop();

  // Set the number
  // Display the number
  // delay() function
}