// Arduino Uno R4 WiFi LESSON 16: Understanding If Statements and Conditionals
// https://www.youtube.com/watch?v=H5OlCuUWEg8&list=PLGs0VKk2DiYyn0wN335MXpbi3PRJTMmex&index=28

// homework - red green yellow LED, ask user which user to turn on and then turn it on

//DOES NOT WORK

#include <Arduino.h>

int redLED = 13;
int greenLED = 12;
int yellowLED = 11;
int baudRate = 9600;
String promptColor = ("which LED (red, green, yellow) do you want to switch?");
String promptState = ("Do you want to switch on or off LED? write ON or OFF");

String myColor;    //selected LED
String myState;    //state of LED on/off


void setup() {
    Serial.begin(baudRate);
    pinMode(redLED,OUTPUT);
    pinMode(greenLED,OUTPUT);
    pinMode(yellowLED,OUTPUT);    

}

void loop() {
    //digitalWrite(redLED,HIGH);

    //user input
    Serial.println(promptColor);
    while (Serial.available()==0)
    {
        /* code */
    }
    myColor=Serial.readString();
    Serial.println(myColor);

    Serial.println(promptState);
    while (Serial.available()==0)
    {
        /* code */
    }
    myState=Serial.readString();
    Serial.print("you write: ");
    Serial.println(myState);

//red LED
    if (myColor=="red" || myColor=="RED" || myColor=="Red"){
    
    if (myState=="ON"  || myState=="on"){
        digitalWrite(redLED,HIGH);
        Serial.print(myState);
        Serial.println("desired state is ");
    }        
        if (myState=="OFF"  || myState=="off"){
            digitalWrite(redLED,LOW);
        }

    }

//green LED
    if (myColor=="green" || myColor=="GREEN" || myColor=="Green"){
    
    if (myState=="ON"  || myState=="on"){
        digitalWrite(greenLED,HIGH);
        Serial.print(myState);
        Serial.println("desired state is ");
    }        
        if (myState=="OFF"  || myState=="off"){
            digitalWrite(greenLED,LOW);
        }

    }

//yellow LED    
    if (myColor=="yellow" || myColor=="YELLOW" || myColor=="Yellow"){
    
    if (myState=="ON"  || myState=="on"){
        digitalWrite(yellowLED,HIGH);
        Serial.print(myState);
        Serial.println("desired state is ");
    }        
        if (myState=="OFF"  || myState=="off"){
            digitalWrite(yellowLED,LOW);
        }

    }

    
}