// Learn about the ESP32 WiFi simulation in
// https://docs.wokwi.com/guides/esp32-wifi

#include <WiFi.h>
#include <Wire.h>
#include <HTTPClient.h>
#include <ESP32Servo.h>
#include <ArduinoJson.h>

const char* apiKey = "SBL9Z3V7VJNO7SIO";
const char* channelId = "2376369";
const char* fieldId = "1";
const int servoPin = 33;
Servo myservo;

void setup() {
  Serial.begin(115200);
  myservo.setPeriodHertz(50);
  myservo.attach(servoPin, 500, 2400);

  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
}
int readThingspeakChannel() {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String url = "http://api.thingspeak.com/channels/" + String(channelId) + "/fields/" + String(fieldId) + ".json?api_key=" + apiKey + "&results=1";
    http.begin(url);
    int httpResponseCode = http.GET();
    if (httpResponseCode > 0) {
      String payload = http.getString();

      // Use ArduinoJson to parse the JSON payload
      const size_t capacity = JSON_ARRAY_SIZE(1) + JSON_OBJECT_SIZE(2) + JSON_OBJECT_SIZE(8) + JSON_OBJECT_SIZE(11) + 200;
      DynamicJsonDocument doc(capacity);
      deserializeJson(doc, payload);
      int value = doc["feeds"][0]["field1"].as<int>();
      return value;
    } else {
      Serial.print("Error on HTTP request: ");
      Serial.println(httpResponseCode);
      return -1;
    }
    http.end();
  }
  return -1;
}

void loop() {
  int temperature = readThingspeakChannel();
  Serial.print("Temperature: ");
  Serial.println(temperature);
  if (temperature != 0 && temperature != -1) {
    // Adjust the servo motor angle based on the temperature read
    if (temperature < 22) {
      myservo.write(0); // Minimum angle
    } else if (temperature >= 22 && temperature < 25) {
      myservo.write(90); // Medium angle
    } else {
      myservo.write(180); // Maximum angle
    }
  }
  delay(1000);
}