ESP8266 Web Server Arduino Script

I found this script for the ESP8266 wireless and Arduino script and mane my modifications for my needs, works great




/*********
  Rui Santos https://randomnerdtutorials.com/esp8266-web-server-with-arduino-ide/
  Complete project details at http://randomnerdtutorials.com
*********/

//My Add/Edit
//#77878A color Regent Grey
//#FF0000 color Red
//#195B6A Color Green
// Load Wi-Fi library
#include <ESP8266WiFi.h>
//My Add/Edit
#include "ESPAsyncWebServer.h"

// Replace with your network credentials
const char* ssid     = "XXXXXXXXXX";
const char* password = "XXXXXXXXXX";

// Set web server port number to 80
WiFiServer server(80);

// Variable to store the HTTP request
String header;

// Auxiliar variables to store the current output state
String output5State = "off";
String output4State = "off";

//My Add/Edit ADD ANOTHER RELAY GPIO 3
String output3State = "off";

// Assign output variables to GPIO pins
const int output5 = 5;
const int output4 = 4;

//My Add/Edit ADD ANOTHER RELAY GPIO 3
const int output3 = 3;

// Current time
unsigned long currentTime = millis();
// Previous time
unsigned long previousTime = 0;
// Define timeout time in milliseconds (example: 2000ms = 2s)
const long timeoutTime = 2000;

void setup() {
  Serial.begin(115200);
  // Initialize the output variables as outputs

  pinMode(output5, OUTPUT);
  pinMode(output4, OUTPUT);

  //My Add/Edit ADD ANOTHER RELAY GPIO 3
  pinMode(output3, OUTPUT);



  // Set outputs to LOW
  digitalWrite(output5, LOW);
  digitalWrite(output4, LOW);

  //My Add/Edit ADD ANOTHER RELAY GPIO 3
  digitalWrite(output3, LOW);

  // Connect to Wi-Fi network with SSID and password
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  // Print local IP address and start web server
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  server.begin();
}

void loop() {
  WiFiClient client = server.available();   // Listen for incoming clients

  if (client) {                             // If a new client connects,
    Serial.println("New Client.");          // print a message out in the serial port
    String currentLine = "";                // make a String to hold incoming data from the client
    currentTime = millis();
    previousTime = currentTime;
    while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected
      currentTime = millis();
      if (client.available()) {             // if there's bytes to read from the client,
        char c = client.read();             // read a byte, then
        Serial.write(c);                    // print it out the serial monitor
        header += c;
        if (c == '\n') {                    // if the byte is a newline character
          // if the current line is blank, you got two newline characters in a row.
          // that's the end of the client HTTP request, so send a response:
          if (currentLine.length() == 0) {
            // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
            // and a content-type so the client knows what's coming, then a blank line:
            client.println("HTTP/1.1 200 OK");
            client.println("Content-type:text/html");
            client.println("Connection: close");
            client.println();

            // turns the GPIOs on and off
            if (header.indexOf("GET /5/on") >= 0) {
              Serial.println("GPIO 5 on");
              output5State = "on";
              digitalWrite(output5, HIGH);
            } else if (header.indexOf("GET /5/off") >= 0) {
              Serial.println("GPIO 5 off");
              output5State = "off";
              digitalWrite(output5, LOW);

            } else if (header.indexOf("GET /4/on") >= 0) {
              Serial.println("GPIO 4 on");
              output4State = "on";
              digitalWrite(output4, HIGH);
            } else if (header.indexOf("GET /4/off") >= 0) {
              Serial.println("GPIO 4 off");
              output4State = "off";
              digitalWrite(output4, LOW);

              //My Add/Edit ADD ANOTHER RELAY GPIO 3
            } else if (header.indexOf("GET /3/on") >= 0) {
              Serial.println("GPIO 3 on");
              output3State = "on";
              digitalWrite(output3, HIGH);
            } else if (header.indexOf("GET /3/off") >= 0) {
              Serial.println("GPIO 3 off");
              output3State = "off";
              digitalWrite(output3, LOW);
            }

            // Display the HTML web page
            client.println("<!DOCTYPE html><html>");
            client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
            client.println("<link rel=\"icon\" href=\"data:,\">");
            // CSS to style the on/off buttons
            // Feel free to change the background-color and font-size attributes to fit your preferences
            client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
            //client.println(".button { background-color: #195B6A; border: none; color: white; padding: 16px 40px;");//Original Color Green

            //BACKGROUND COLOR RED
            client.println(".button { background-color: #FF0000; border: none; color: white; padding: 16px 40px;");//My Edit Color Red

            //client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");//Original

            //FONT SIZE
            client.println("text-decoration: none; font-size: 20px; margin: 2px; cursor: pointer;}");//My Edit Font Size
            //client.println(".button2 {background-color: #77878A;}</style></head>");//Original Color Regent Grey

            //BACKGROUND COLOR GREEN
            client.println(".button2 {background-color: #195B6A;}</style></head>");//My Edit Color Green

            // Web Page Heading
            //client.println("<body><h1>ESP8266 Web Server</h1>");//Original

            //BODY HEADING HOFFMAN COLLISION
            client.println("<body><h1>Hoffman Collision ESP8266 Web Server</h1>"); //My Add/Edit

            // Display current state, and ON/OFF buttons for GPIO 5
            client.println("<p>GPIO 5 - State " + output5State + "</p>");
            // If the output5State is off, it displays the ON button
            if (output5State == "off") {
              client.println("<p><a href=\"/5/on\"><button class=\"button\">Turn Paint Room Lights ON</button></a></p>");// My Edit For Hoffman Collision Paint Room Lights
            } else {
              client.println("<p><a href=\"/5/off\"><button class=\"button button2\">Turn Paint Room Lights OFF</button></a></p>");// My Edit For Hoffman Collision Paint Room Lights
            }

            // Display current state, and ON/OFF buttons for GPIO 4
            client.println("<p>GPIO 4 - State " + output4State + "</p>");
            // If the output4State is off, it displays the ON button
            if (output4State == "off") {
              client.println("<p><a href=\"/4/on\"><button class=\"button\">Turn ON</button></a></p>");// For other rooms and devices
            } else {
              client.println("<p><a href=\"/4/off\"><button class=\"button button2\">Turn OFF</button></a></p>");// For other rooms and devices
            }

            //My Add/Edit ADD ANOTHER RELAY GPIO 3
            // Display current state, and ON/OFF buttons for GPIO 3
            client.println("<p>GPIO 3 - State " + output3State + "</p>");
            // If the output3State is off, it displays the ON button
            if (output3State == "off") {
              client.println("<p><a href=\"/3/on\"><button class=\"button\">Turn ON</button></a></p>");// For other rooms and devices
            } else {
              client.println("<p><a href=\"/3/off\"><button class=\"button button2\">Turn OFF</button></a></p>");// For other rooms and devices
            }


            client.println("</body></html>");

            // The HTTP response ends with another blank line
            client.println();
            // Break out of the while loop
            break;
          } else { // if you got a newline, then clear currentLine
            currentLine = "";
          }
        } else if (c != '\r') {  // if you got anything else but a carriage return character,
          currentLine += c;      // add it to the end of the currentLine
        }
      }
    }
    // Clear the header variable
    header = "";
    // Close the connection
    client.stop();
    Serial.println("Client disconnected.");
    Serial.println("");
  }
}