/*********
  6 устройств
  16 05 04 14 12 13 
  D0 D1 D2 D5 D6 D7
*********/

// Load Wi-Fi library
#include <ESP8266WiFi.h>

// Поменяйте на свои значения
const char* ssid     = "ABC";
const char* password = "xyz";

// Порт вашего вебсервера, пример, 80
WiFiServer server(80);

// Переменная для хранения HTTP запроса
String header;

// Вспомогательные переменные для хранения текущего состояния вывода

String output4State = "off";
String output5State = "off";
String output16State = "off";
String output14State = "off";
String output12State = "off";
String output13State = "off";

// Назначьте выходные переменные на контакты GPIO

const int output4 = 4;
const int output5 = 5;
const int output16 = 16;
const int output14 = 14;
const int output12 = 12;
const int output13 = 13;

void setup()
{
  Serial.begin(115200);
  // Инициализируйте выходные переменные как выходы
    
  pinMode(output4, OUTPUT);
  pinMode(output5, OUTPUT);
  pinMode(output16, OUTPUT);
  pinMode(output14, OUTPUT);
  pinMode(output13, OUTPUT);
  pinMode(output12, OUTPUT);
  // Установите выходы на HIGH
  
  digitalWrite(output4, HIGH);
  digitalWrite(output5, HIGH);
  digitalWrite(output16, HIGH);
  digitalWrite(output14, HIGH);
  digitalWrite(output13, HIGH);
  digitalWrite(output12, HIGH);

  // Подключитесь к сети Wi-Fi с помощью SSID и пароля
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) 
  {
    delay(1000);
    Serial.print(".");
  }
  // Вывести локальный IP-адрес и запустить веб-сервер
  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
    while (client.connected()) 
    {                                         // loop while the client's connected
      if (client.available()) 
      {                                       
        char c = client.read();             
        Serial.write(c);                    
        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 /4/on") >= 0)
            {
              Serial.println("GPIO 4 on");
              output4State = "on";
              digitalWrite(output4, LOW);
            }
            else if (header.indexOf("GET /4/off") >= 0)
            {
              Serial.println("GPIO 4 off");
              output4State = "off";
              digitalWrite(output4, HIGH);
            }
            else if (header.indexOf("GET /5/on") >= 0)
            {
              Serial.println("GPIO 5 on");
              output5State = "on";
              digitalWrite(output5, LOW);
            }
            else if (header.indexOf("GET /5/off") >= 0)
            {
              Serial.println("GPIO 5 off");
              output5State = "off";
              digitalWrite(output5, HIGH);
            }
            else if (header.indexOf("GET /12/on") >= 0)
            {
              Serial.println("GPIO 12 on");
              output12State = "on";
              digitalWrite(output12, LOW);
            }
            else if (header.indexOf("GET /12/off") >= 0)
            {
              Serial.println("GPIO 12 off");
              output12State = "off";
              digitalWrite(output12, HIGH);
            }
            else if (header.indexOf("GET /13/on") >= 0)
            {
              Serial.println("GPIO 13 on");
              output13State = "on";
              digitalWrite(output13, LOW);
            }
            else if (header.indexOf("GET /13/off") >= 0)
            {
              Serial.println("GPIO 13 off");
              output13State = "off";
              digitalWrite(output13, HIGH);
            }
            else if (header.indexOf("GET /14/on") >= 0)
            {
              Serial.println("GPIO 14 on");
              output14State = "on";
              digitalWrite(output14, LOW);
            }
            else if (header.indexOf("GET /14/off") >= 0)
            {
              Serial.println("GPIO 14 off");
              output14State = "off";
              digitalWrite(output14, HIGH);
            }
            else if (header.indexOf("GET /16/on") >= 0)
            {
              Serial.println("GPIO 16 on");
              output16State = "on";
              digitalWrite(output16, LOW);
            }
            else if (header.indexOf("GET /16/off") >= 0)
            {
              Serial.println("GPIO 16 off");
              output16State = "off";
              digitalWrite(output16, HIGH);
            }
            // 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:,\">");
            
            // Web Page Heading
            client.println("<body><h1>Smart Home DL1</h1>");

            // Display current state for GPIO     
            client.println("<p>GPIO 4 - State " + output4State + "</p>");
            client.println("<p>GPIO 5 - State " + output5State + "</p>");
            client.println("<p>GPIO 12 - State " + output12State + "</p>");
            client.println("<p>GPIO 13 - State " + output13State + "</p>");
            client.println("<p>GPIO 14 - State " + output14State + "</p>");
            client.println("<p>GPIO 16 - State " + output16State + "</p>");
            client.println("<p>Please visit www.bandardalat.com for more projects.</p>");
            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("");
  }
}