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#include <ESP8266WiFi.h>

#include <ESP8266HTTPClient.h>

#include <WiFiClient.h>

#include <ArduinoJson.h>

#include <Servo.h>

Servo myservo;

const char* ssid = "Wifi ID";

const char* password = "Wifi PW";

//StaticJsonDocument<2048> doc;

DynamicJsonDocument doc(1000);

String serverName = "http://yongdo.azurewebsites.net/api/v1/weather/real-time?weather_station=school";

unsigned long lastTime = 0;

// Timer set to 10 minutes (600000)

//unsigned long timerDelay = 600000;

// Set timer to 5 seconds (5000)

unsigned long timerDelay = 5000;

String payload = "";

int wind_deg_index = 0;

int wind_speed = 0;

long mytime=0;

int servo_position = 0;

void setup() {

  Serial.begin(115200); 

  WiFi.begin(ssid, password);

  Serial.println("Connecting");

  while(WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  myservo.attach(D5, 700, 2800); 

  Serial.println("");

  Serial.print("Connected to WiFi network with IP Address: ");

  Serial.println(WiFi.localIP());

  Serial.println("Timer set to 5 seconds (timerDelay variable), it will take 5 seconds before publishing the first reading.");

}

void loop() {

  // Send an HTTP POST request depending on timerDelay

  if ((millis() - lastTime) > timerDelay) {

    if(WiFi.status()== WL_CONNECTED){

      WiFiClient client;

      HTTPClient http;

      String serverPath = serverName;

      http.begin(client, serverPath.c_str());   

      // Send HTTP GET request

      int httpResponseCode = http.GET();

      if (httpResponseCode>0) {

        Serial.print("HTTP Response code: ");

        Serial.println(httpResponseCode);

        payload = http.getString();

//        Serial.println(payload);

        char buf[1000];

        payload.toCharArray(buf, payload.length()+1);

        Serial.println(payload.length());

        Serial.println(buf);

        DeserializationError error = deserializeJson(doc, buf);

        if (error) {

          Serial.print("deserializeMsgPack() failed: ");

          Serial.println(error.f_str());

          return;

        }

        wind_deg_index = doc["wind_deg_index"];

        wind_speed = doc["wind_speed"];

        Serial.print("wind_deg_index = " + String(wind_deg_index)); Serial.print('t');

        Serial.print("wind_speed = " + String(wind_speed)); Serial.println("");

      }

      else {

        Serial.print("Error code: ");

        Serial.println(httpResponseCode);

      }

      http.end();

    }

    else {

      Serial.println("WiFi Disconnected");

    }

    lastTime = millis();

  }

  if (wind_speed < 50) {

   myservo.attach(D5);

    myservo.write(0);

    delay(1200);  

    myservo.write(90);

    delay(1200);

    myservo.detach();

  }

  else if (wind_speed < 100) {

       myservo.attach(D5);

    myservo.write(0);

    delay(900);  

    myservo.write(90);

    delay(900);

    myservo.detach();

  }

  else if (wind_speed < 200) {

       myservo.attach(D5);

    myservo.write(0);

    delay(700);  

    myservo.write(90);

    delay(700);

    myservo.detach();

  }

  else if (wind_speed < 300) {

       myservo.attach(D5);

    myservo.write(0);

    delay(460);  

    myservo.write(90);

    delay(460);

    myservo.detach();

  }

  else if (wind_speed < 500) {

       myservo.attach(D5);

    myservo.write(0);

    delay(350);  

    myservo.write(90);

    delay(350);

    myservo.detach();

  }

  else if (wind_speed < 700) {

       myservo.attach(D5);

    myservo.write(0);

    delay(250);  

    myservo.write(90);

    delay(250);

    myservo.detach();

  }

  else if (wind_speed < 1000) {

       myservo.attach(D5);

    myservo.write(0);

    delay(150);  

    myservo.write(90);

    delay(150);

    myservo.detach();

  }

  else {

       myservo.attach(D5);

    myservo.write(0);

    delay(1500);  

    myservo.write(90);

    delay(1500);

    myservo.detach();

  }

}