//https://youtu.be/48RW4JHMXUA

#include <Arduino.h>

#include "Base64.h"
#include <ESP8266WiFi.h>
#include <RCSwitch.h>
#include "fauxmoESP.h"

#define WIFI_SSID "xxxxxxxxxxxxxx"
#define WIFI_PASS "xxxxxxxxxxxxxx"
 
fauxmoESP alexawifi;
RCSwitch mySwitch = RCSwitch();

WiFiServer server(80);

// EasyIoT server definitions
#define EIOT_USERNAME    "xxxxxxxxxxxxx"
#define EIOT_PASSWORD    "xxxxxxxxxxxxx"
#define EIOT_IP_ADDRESS  "192.168.0.1"
#define EIOT_PORT        80
#define USER_PWD_LEN 40
char unameenc[USER_PWD_LEN];
boolean Status;
boolean Gesamtstatus[16];
boolean InitialisedByAlexa;
int StatusChangedInt=10;
String req;
int val;




void wifiSetup() {

// -----------------------------------------------------------------------------
// WLAN SETUP
// -----------------------------------------------------------------------------
 
    WiFi.mode(WIFI_STA);
 
    Serial.printf("Verbindungs zu %s wird aufgebaut ", WIFI_SSID);
    
    WiFi.begin(WIFI_SSID, WIFI_PASS);
 
    while (WiFi.status() != WL_CONNECTED) {
        Serial.print(">");
        delay(100);
    } 
    Serial.println("");
    Serial.printf("Verbunden! SSID: %s, IP Adresse: %s\n", WiFi.SSID().c_str(), WiFi.localIP().toString().c_str());
}


void sendIOTBoolean(boolean inputState, String EIOT_NODE)
{  
   WiFiClient client;
   if (!client.connect(EIOT_IP_ADDRESS, EIOT_PORT)) {Serial.println("connection failed");}
  String url = "";
  String command = "";
  
  if (inputState)
    command = "ControlOn";
  else
    command = "ControlOff";
  
  url = "/Api/EasyIoT/Control/Module/Virtual/"+ String(EIOT_NODE) + "/"+command; // generate EasIoT server node URL

//  url += "/Api/EasyIoT/Control/Module/Virtual/"+ String(EIOT_NODE) + "/ControlLevel/"+String(Wert); // generate EasIoT server node URL
  Serial.print("POST data to URL: ");
  Serial.println(url);
  client.print(String("POST ") + url + " HTTP/1.1\r\n" +
               "Host: " + String(EIOT_IP_ADDRESS) + "\r\n" + 
               "Connection: close\r\n" + 
               "Authorization: Basic " + unameenc + " \r\n" + 
               "Content-Length: 0\r\n" + 
               "\r\n");
/*  delay(50);
    while(client.available()){

    String line = client.readStringUntil('\r');
    Serial.print(line);
  }
  Serial.println();
  Serial.println("Connection closed"); */
}



 
void anfrage(uint8_t device_id, const char * device_name, bool state) {
  Serial.print("Gerät: "); Serial.println(device_name); 
  Serial.print("Status: ");
  InitialisedByAlexa=1;
  StatusChangedInt=device_id; 
  Status=state;
  Gesamtstatus[device_id]=state;
  if (state) {Serial.println("AN");} else {Serial.println("AN");}
}


 
void setup() {

    Serial.begin(115200);
    Serial.println("Nach dem Verbinden, sage 'Alexa, schalte <Gerät> an' oder 'aus'");
    
    mySwitch.enableTransmit(5);

    //Setup für IOT
    char uname[USER_PWD_LEN];
    String str = String(EIOT_USERNAME)+":"+String(EIOT_PASSWORD);  
    str.toCharArray(uname, USER_PWD_LEN); 
    memset(unameenc,0,sizeof(unameenc));
    base64_encode(unameenc, uname, strlen(uname));


    wifiSetup();
    geraete();

    // Start the server
  server.begin();
  Serial.println("Server started");

}

void geraete(){

    alexawifi.addDevice("Test Eins"); //ID 0
    alexawifi.addDevice("Test Zwei");//ID 1

    alexawifi.onMessage(anfrage);
    alexawifi.onGetState([](unsigned char device_id, const char * device_name) {
    //    delay(100);
        Serial.print( device_id);
        Serial.print(", Status:");
        Serial.println(Gesamtstatus[device_id]);
        return Gesamtstatus[device_id] == HIGH;
    });

    
    
}



void loop() {
  alexawifi.handle();
  switch (StatusChangedInt) {
    case 0: if (InitialisedByAlexa==1) {sendIOTBoolean(Status,"N20S0"); InitialisedByAlexa=0; }
            break;
            
    case 1: if (InitialisedByAlexa==1) {sendIOTBoolean(Status,"N21S0"); InitialisedByAlexa=0; }
            break;
            
    case 2: if (InitialisedByAlexa==1) {sendIOTBoolean(Status,"N22S0"); InitialisedByAlexa=0; }
            break;
  }
  StatusChangedInt=10;
 



// This Part is for Receving Requests from IOT Server to control the WeMo Switch.
  WiFiClient client = server.available();
  if (!client) {
    return;
  }
  
  // Wait until the client sends some data
  Serial.println("new client");
  delay(50);

/*  while(!client.available()){
    Serial.print("+");
    delay(100);
  }
*/
  
  // Read the first line of the request
  req = client.readStringUntil('\r');
  Serial.print("Request::");
  Serial.println(req);
  client.flush();

//  Matchrequest
  if (req.indexOf("/gpio/N20S0/0") != -1) {Gesamtstatus[0]= 0;   StatusChangedInt=0; } else if (req.indexOf("/gpio/N20S0/1") != -1) {Gesamtstatus[0] = 1; StatusChangedInt=0; }
  else if (req.indexOf("/gpio/N21S0/0") != -1) {Gesamtstatus[1] = 0; StatusChangedInt=1; }  else if (req.indexOf("/gpio/N21S0/1") != -1) {Gesamtstatus[1] = 1; StatusChangedInt=1; }
  else if (req.indexOf("/gpio/N22S0/0") != -1) {Gesamtstatus[2] = 0; StatusChangedInt=2; }  else if (req.indexOf("/gpio/N22S0/1") != -1) {Gesamtstatus[2] = 1; StatusChangedInt=2; }
  else {
    Serial.println("invalid request");
    client.stop();
    return;
  }
    if (req.indexOf("S0/0") != -1)
    val = 0;
    else if (req.indexOf("S0/1") != -1)
    val = 1;

  client.flush();

  // Prepare the response
  String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now ";
  s += (val)?"high":"low";
  s += "</html>\n";

  // Send the response to the client
  client.print(s);
  Serial.println(s);
  delay(1);
  Serial.println("Client disonnected");

  // The client will actually be disconnected 
  // when the function returns and 'client' object is detroyed
  
}