#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>


const int optocoupler = D7;
const char* ssid = "LeWe";
const char* password = "5275274365464843";

ESP8266WebServer server(80);

int lightStatus = 0; // 0 off, 1 pulse, 2 on

//const int inputPin = D3;
//int val = 0;


void setup() {
  Serial.begin(9600);
  
  pinMode(BUILTIN_LED, OUTPUT);  // initialize onboard LED as output
  digitalWrite(BUILTIN_LED, HIGH);

  pinMode(optocoupler, OUTPUT);
  digitalWrite(optocoupler, LOW);

//  pinMode(inputPin, INPUT);
  
  // Connect WiFi
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.hostname("OnAir");
  WiFi.begin(ssid, password);
 
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  server.on("/light", handle_OnConnect);
  server.onNotFound(handle_NotFound);

  server.begin();
  Serial.println("HTTP server started");
}

void loop() {
  server.handleClient();

/*
  val = digitalRead(inputPin);
  digitalWrite(BUILTIN_LED, val);
*/
}

void cycleStatus() {
  digitalWrite(optocoupler, HIGH);
  delay(250);
  digitalWrite(optocoupler, LOW);
  delay(50);

  if (lightStatus < 2) {
    lightStatus++;
  }
  else {
    lightStatus = 0;
  }
  
  Serial.println("click");
}

void handle_OnConnect() {
  if (server.hasArg("status")) {

    int targetStatus = server.arg("status").toInt();

    if (targetStatus >= 0 && targetStatus <= 2) {
      while (lightStatus != targetStatus) {
        cycleStatus();
      }
    }
  }
  else {
    cycleStatus();
  }

  server.send(200, "text/plain", "status set to " + lightStatus);
}
void handle_NotFound(){
  server.send(404, "text/plain", "Not found");
}