// Below an example message for the arduino to take
// {"spray":0,"angle":90,"pump":180}

#include <ArduinoJson.h>
#include <Servo.h>

Servo servo1;
Servo servo2;
Servo servo3;

void setup() {
  Serial.begin(9600);
  while (!Serial) continue;

  Serial.println("start");

  servo1.attach(9);
  servo2.attach(10);
  servo3.attach(11);
}

void loop() {
  // Check if the other Arduino is transmitting
  if (Serial.available())
  {
    // Allocate the JSON document
    // This one must be bigger than the sender's because it must store the strings
    StaticJsonDocument<300> doc;

    // Read the JSON document from the "link" serial port
    DeserializationError err = deserializeJson(doc, Serial);

    if (err == DeserializationError::Ok)
    {

      // (we must use as<T>() to resolve the ambiguity)
      int spray = doc["spray"].as<int>();
      int angle = doc["angle"].as<int>();
      int pump = doc["pump"].as<int>();

      // Print the values
      /*
        Serial.print("spray = ");
        Serial.println(spray);
        Serial.print("angle = ");
        Serial.println(angle);
        Serial.print("pump = ");
        Serial.println(pump);
      */

      //write angles to servos
      servo1.write(spray);
      servo2.write(angle);
      servo3.write(pump);
    }
    else
    {
      // Print error to the "debug" serial port
      Serial.print("deserializeJson() returned ");
      Serial.println(err.c_str());

      // Flush all bytes in the "link" serial port buffer
      while (Serial.available() > 0)
        Serial.read();
    }
  }
}