/*

This code is for directly programming an ESP8266

The handleRoot() function is probably all
you need to look at.
Currently, it is set to let you control
a single relay or LED via a pin.

The rest just configures the ESP8266 as a
webserver that responds to root, "/".

This code is based on...
  File -> Examples -> ESP8266WebServer -> HelloServer

*/

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

const char* ssid = "SkynetGlobalDefenseNetwork";
const char* password = "password";

// to control something like a relay
int const pin = 2;
// The current setting of 2 does not really work
// because GPIO2 must not be held LOW during boot.
// Either disconnect GPIO2 on boot or get an
// ESP8266 module with more pins than an ESP-01.

ESP8266WebServer server(80);

bool state = false;
void handleRoot() {
  if (server.args() > 2){
    state = (server.arg(2) == "true");
  }
  if (state) {
    Serial.println("on");
    server.send(200, "text/plain", "on");
    digitalWrite(pin,HIGH);
  } else {
    Serial.println("off");
    server.send(200, "text/plain", "off");
    digitalWrite(pin,LOW);
  }
}

void handleNotFound(){
  server.send(200, "text/plain", "What are you doing?");
}

void setup(void){
  pinMode(pin,OUTPUT);
  digitalWrite(pin,LOW);
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  server.on("/", handleRoot);
  server.onNotFound(handleNotFound);

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

void loop(void){
  server.handleClient();
}