/*
 * A Simple Monitoring Sensor
 */


// Includes for Temperature and Humidity Sensor
#include "DHT.h"

// Includes for Ethernet
#include <SPI.h>
#include <Ethernet.h>

// Definitions for DHT
#define DHTPIN 7
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// Definitions for Ethernet Web Server
byte mac[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
byte ip[] = { 0,0,0,0 };
EthernetServer server(80);

// Led Pins
const int greenLed = 9;
const int redLed = 8;

//Led handling stuff
long waitUntil=0;
boolean greenLedState = true; 

void setup()
{
  //Initialize
  Ethernet.begin(mac, ip);
  server.begin();
  dht.begin();
  
  // Define led pin modes
  pinMode(greenLed, OUTPUT); 
  pinMode(redLed, OUTPUT);

 
}

void loop()
{
  
    // Each time through loop(), set green Led to the same value as the state variable  
    digitalWrite(greenLed, greenLedState);    // Nothing will change until millis() increments by 1000  
    if (millis() >= waitUntil) {    
        greenLedState = !(greenLedState);     // Toggle the LED's state    
        waitUntil = millis() + 1000;          // Make sure we wait for another 1000 milliseconds. 
    }
  


  //Process Web requests  
  EthernetClient client = server.available();
  if (client) {
    // an http request ends with a blank line
    boolean current_line_is_blank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        // if we've gotten to the end of the line (received a newline
        // character) and the line is blank, the http request has ended,
        // so we can send a reply
        if (c == '\n' && current_line_is_blank) {
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();
          client.println("<PRE>Monitoring");
          client.println();
          
          // output the value of each analog input pin
          client.print("Sabotage: ");
          if (digitalRead(A0) == 1){
            client.println("ok");
          }else{
            client.println("alert");
          }          
          client.print("Battery: ");
          if (digitalRead(A1) == 1){
            client.println("ok");
          }else{
            client.println("alert");
          }             
          client.print("Other: ");
          if (digitalRead(A2) == 1){
            client.println("ok");
          }else{
            client.println("alert");
          }   
          client.print("Burglar: ");
          if (digitalRead(A3) == 1){
            client.println("ok");
          }else{
            client.println("alert");
          }
          client.print("Fire: ");
          if (digitalRead(A4) == 1){
            client.println("ok");
          }else{
            client.println("alert");
          }    
          
            //read and send temperature

            float h = dht.readHumidity();
            float t = dht.readTemperature()-1.9;
            if (isnan(t) || isnan(h)) {
              client.println("Temperature: unknown");
              client.println("Humidity: unknown");
            } else {
              client.print("Temperature: "); 
              client.println(t);
              client.print("Humidity: "); 
              client.println(h);
            }

          // in case of problems turn on red led
          if ( digitalRead(A0) and digitalRead(A1) and digitalRead(A2) and digitalRead(A3) and digitalRead(A4) and t <= 35.0){
            digitalWrite(redLed, LOW); 
          }else{
            digitalWrite(redLed, HIGH); 
          }
          
          client.println("</PRE>");
          break;
        }
        if (c == '\n') {
          // we're starting a new line
          current_line_is_blank = true;
        } else if (c != '\r') {
          // we've gotten a character on the current line
          current_line_is_blank = false;
        }
      }
    }
    // give the web browser time to receive the data
    delay(1);
    client.stop();
  }



}