#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266HTTPClient.h>
#define USE_SERIAL Serial
ESP8266WiFiMulti WiFiMulti;

int sent;

void setup() {
  // Init LED
   pinMode(LED_BUILTIN, OUTPUT);
   
    USE_SERIAL.begin(115200);
   // USE_SERIAL.setDebugOutput(true);

    USE_SERIAL.println();
    USE_SERIAL.println();
    USE_SERIAL.println();

    for(uint8_t t = 4; t > 0; t--) {
        USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
        USE_SERIAL.flush();
        delay(1000);
    }

    WiFi.mode(WIFI_STA);
    WiFiMulti.addAP("WLAN", "WLANPASS");

}

void loop() {
    // wait for WiFi connection
    int wifistatus = WiFiMulti.run() ;
    if(wifistatus != WL_CONNECTED) {
      // Not connected
      USE_SERIAL.printf("Wifi not connected\n");
      USE_SERIAL.printf("Setting sent=0\n");
      sent = 0;
      digitalWrite(LED_BUILTIN, LOW);
      delay(20);
      digitalWrite(LED_BUILTIN, HIGH);
      delay(1000);
    }
    else if (wifistatus == WL_CONNECTED && sent == 0) {
        // Connected but not sent yet
        digitalWrite(LED_BUILTIN, LOW);
        HTTPClient http;

        USE_SERIAL.print("[HTTP] begin...\n");
        // configure traged server and url
        http.begin("http://lxluser:lxlpass@192.168.0.78/dev/sps/io/ESP_Motorrad/Pulse");

        USE_SERIAL.print("[HTTP] GET...\n");
        // start connection and send HTTP header
        int httpCode = http.GET();
        
        // Flashing to indicate that request was sent
        digitalWrite(LED_BUILTIN, LOW);
        delay(20);
        digitalWrite(LED_BUILTIN, HIGH);
        delay(20);
        digitalWrite(LED_BUILTIN, LOW);
        delay(20);
        digitalWrite(LED_BUILTIN, HIGH);
        delay(20);
        digitalWrite(LED_BUILTIN, LOW);
        delay(20);
        digitalWrite(LED_BUILTIN, HIGH);
        delay(20);
        digitalWrite(LED_BUILTIN, LOW);
       
        // httpCode will be negative on error
        if(httpCode > 0) {
            // HTTP header has been send and Server response header has been handled
            USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

            // file found at server
            if(httpCode == HTTP_CODE_OK) {
                USE_SERIAL.printf("Setting sent=1\n");
                sent = 1;
                String payload = http.getString();
                USE_SERIAL.println(payload);
            }
        } else {
            USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
        }

        http.end();
        delay(10000);
    } else {
      // Connected and already sent
      digitalWrite(LED_BUILTIN, LOW);
      }
   
}