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

char clientId[50];
int led1 = 4;
int led2 = 12;
int led3 = 13;
int led4 = 5;
int servopin1 = 12;
Servo myServo1;
int servopin2 = 4;
Servo myServo2;
int servopin3 = 15;
Servo myServo3;

// Configure Seven segment
WiFiClient espClient;
PubSubClient client(espClient);
Adafruit_SSD1306 display(128, 64, &Wire);
 
void setup() 
{
  Serial.begin(115200);

  myServo1.attach(servopin1, 500, 2400);
  myServo2.attach(servopin2, 500, 2400);
  myServo3.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);
  
  client.setServer("broker.emqx.io", 1883);
  client.setCallback(callback);

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, 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) 
{
  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();
    myServo1.write(180);

  }
  else if(stMessage == "2")
  {
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Main Engine Gimbal Test Lift Beanie Cap ");
    display.display();
    myServo2.write(0);

    digitalWrite(led1, HIGH);
  }
  else if(stMessage == "3")
  {
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Activate Hydrogen Burn off System");
    display.display();
    
    digitalWrite(led2, HIGH);
  }
  else if(stMessage == "4")
  {
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Main Engine Ignite");
    display.display();

    digitalWrite(led3, HIGH);
  }
  else if(stMessage == "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();
    myServo3.write(360);
  }
  else if(stMessage == "6")
  {
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(10, 0);
    display.println("Ignite Both SRB's");
    display.display();

    digitalWrite(led4, HIGH);
  }
  // Convert date format into number

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

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