/*#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);



void setup() {
  // put your setup code here, to run once:
  lcd.init();

  lcd.setCursor(0,0);
  lcd.print("Hello World");
  delay(5000);
  //lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("You are good");
  delay(5000);

}

void loop() {
  // put your main code here, to run repeatedly:

}
*/

// LCD declaration
#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

// Ultrasonic sensor declarations
int trig_pin = 12;
int echo_pin = 11;
float time_flight_value;


//Assignment variables;
int shape;
int quantity;


void setup() {

  pinMode(trig_pin, OUTPUT);
  pinMode(echo_pin, INPUT);
  Serial.begin(115200);
  // Init
  lcd.init();
  lcd.backlight();
  // Print something
  lcd.setCursor(3, 0);
  lcd.print("Hello, world!");
  lcd.setCursor(0, 1);
  lcd.print("Wokwi Online IoT");



  // circle_final_measurement(quantity);
  // circle_measurement();
//  shape =  select_shape();
//   quantity = select_quantity(shape);
//   if(shape == 1 ){
//     circle_final_measurement(quantity);
//   }else if(shape == 2){
//      triangle_final_measurement(quantity);
//   }else if(shape == 3){
//     rectangle_final_measurement(quantity);
//   }else if(shape == 4){
//     cube_final_measurement(quantity);
//   }

}


void loop() {
  shape =  select_shape();
  quantity = select_quantity(shape);
  if(shape == 1 ){
    circle_final_measurement(quantity);
    delay(5000);
  }else if(shape == 2){
     triangle_final_measurement(quantity);
     delay(5000);
  }else if(shape == 3){
    rectangle_final_measurement(quantity);
    delay(5000);
  }else if(shape == 4){
    cube_final_measurement(quantity);
    delay(5000);
  }
  // delay(5000);
}



// A function to choose shape............
int select_shape(){
  //displaying menu for user
  Serial.println("Select a Shape to work with:");
  Serial.println("1. Circle");
  Serial.println("2. Triangle");
  Serial.println("3. Rectangle");
  Serial.println("4. Cube");
  //waiting for user to input value
  while(Serial.available()== 0){ }
  int shape_number = Serial.parseInt();
  //returning the selected shape
  return shape_number;
}


// //A function to to select quantity by calling shape function
int select_quantity(int shape_selected){
  int quantity;

  switch(shape_selected){
    case 1:
      quantity = circle_measurement();
      return quantity;
      break;
    case 2:
      quantity = triangle_measurement();
      return quantity;
      break;
    case 3:
      quantity = rectangle_measurement();
      return quantity;
      break;
    case 4:
      quantity = cube_measurement();
      return quantity;
      break;
   }
}


int circle_measurement(){
  Serial.println("Enter the quantity to measure; ");
  Serial.println("1. Area ");
  Serial.println("2. Circumference ");

  while(Serial.available()== 1){ 

  }
  int value = Serial.parseInt();
  return value;
  // Serial.println(value);
}
 

//function to do final calculation for the circle
float circle_final_measurement(int quantity_selected){
  
  if(quantity_selected == 1){

    //calculating area
    Serial.println("enter circle radius in cm: ");
    while(Serial.available() == 1){}
    int r = Serial.parseInt();
    float area = r*r*3.142;
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("Area of the circle = ");
    Serial.print(area);
    Serial.println("cm square");
    Serial.println("Thank you!");
    // return area;
  }else  if(quantity_selected == 2){
    Serial.println("enter circle radius in cm: ");
    while(Serial.available() == 1){}
    int r = Serial.parseInt();
    float cir = 2*r*3.142;
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("Circumference of the circle = ");
    Serial.print(cir);
    Serial.println("cm");
    Serial.println("Thank you!");
  }
}


// Function to select the quntity of the triangle to be measured
int triangle_measurement(){
  Serial.println("Enter the quantity to measure; ");
  Serial.println("1. parameter ");
  Serial.println("2. Area ");

  while(Serial.available()== 1){ 

  }
  int value = Serial.parseInt();
  return value;
  // Serial.println(value);
}

//Function to do final calculations for the triangle.
float triangle_final_measurement(int quantity_selected){
  
  if(quantity_selected == 1){

    //calculating area
    Serial.println("Enter base:  ");
    while(Serial.available() == 1){}
    int l = Serial.parseInt();

    Serial.println("Enter Height:  ");
    while(Serial.available() == 1){}
    int h = Serial.parseInt();

    Serial.println("Enter hypotenus:  ");
    while(Serial.available() <3 ){}
    int hp = Serial.parseInt();

    float parameter = l+h+hp;
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("parameter of the triangle = ");
    Serial.print(parameter);
    Serial.println("cm");
    Serial.println("Thank you!");
    // return area;
  }else  if(quantity_selected == 2){
    Serial.println("Enter adjacent:  ");
    while(Serial.available() == 1){}
    int l = Serial.parseInt();
    Serial.println("Enter Height:  ");
    while(Serial.available() == 1){}
    int h = Serial.parseInt();
    // Serial.println("Enter hypotenus:  ");
    // while(Serial.available() <3){}
    // int hp = Serial.parseInt();
    float area = l*h*0.5;
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("Area of the triangle = ");
    Serial.print(area);
    Serial.println("cm");
    Serial.println("Thank you!");
  }
}


int rectangle_measurement(){

   Serial.println("Enter the quantity to measure; ");
  Serial.println("1. parameter ");
  Serial.println("2. Area ");

  while(Serial.available()== 1){ 

  }
  int value = Serial.parseInt();
  return value;
  // Serial.println(value);
}

float rectangle_final_measurement(int quantity_selected){
  
  if(quantity_selected == 1){
    //calculating area
    Serial.println("Enter rectangle Lenght:  ");
    while(Serial.available() == 1){}
    int l = Serial.parseInt();

    Serial.println("Enter Height:  ");
    while(Serial.available() == 1){}
    int h = Serial.parseInt();

    // Serial.println("Enter hypotenus:  ");
    // while(Serial.available() <3 ){}
    // int hp = Serial.parseInt();

    float parameter = 2*(l+h);
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("parameter of the rectangle = ");
    Serial.print(parameter);
    Serial.println("cm");
    Serial.println("Thank you!");
    // return area;
  }else  if(quantity_selected == 2){
    Serial.println("Enter Lenght of Triangle:  ");
    while(Serial.available() == 1){}
    int l = Serial.parseInt();
    Serial.println("Enter Height:  ");
    while(Serial.available() == 1){}
    int h = Serial.parseInt();
    // Serial.println("Enter hypotenus:  ");
    // while(Serial.available() <3){}
    // int hp = Serial.parseInt();
    float area = l*h;
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("Area of the triangle = ");
    Serial.print(area);
    Serial.println("cm");
    Serial.println("Thank you!");
  }
}


int cube_measurement(){
  Serial.println("Enter the quantity to measure; ");
  Serial.println("1. Area ");
  Serial.println("2. Volume ");
  Serial.println("3. Parameter ");

  while(Serial.available()== 1){ 

  }
  int value = Serial.parseInt();
  return value;
  // Serial.println(value);
}

float cube_final_measurement(int quantity_selected){
  
  if(quantity_selected == 1){
    //calculating area
    Serial.println("Enter the Cube Lenght:  ");
    while(Serial.available() == 1){}
    int l = Serial.parseInt();

    Serial.println("Whats the Height?:  ");
    while(Serial.available() == 1){}
    int h = Serial.parseInt();

    // Serial.println("Enter Width:  ");
    // while(Serial.available() <3 ){}
    // int hp = Serial.parseInt();

    float Area = l*h;
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("Area of the Cube = ");
    Serial.print(Area);
    Serial.println("cm");
    Serial.println("Thank you!");
    // return area;
  }else  if(quantity_selected == 2){
    Serial.println("Enter the Cube Lenght:  ");
    while(Serial.available() == 1){}
    int l = Serial.parseInt();

    Serial.println("Whats the Height?:  ");
    while(Serial.available() == 1){}
    int h = Serial.parseInt();

    Serial.println("Enter Width:  ");
    while(Serial.available() <3 ){}
    int hp = Serial.parseInt();

    float v = hp*l*h;
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("Volume of the cube = ");
    Serial.print(v);
    Serial.println("cm");
    Serial.println("Thank you!");
  }else if(quantity_selected == 3){
    Serial.println("Enter the Cube Lenght:  ");
    while(Serial.available() == 1){}
    int l = Serial.parseInt();

    Serial.println("Whats the Height?:  ");
    while(Serial.available() == 1){}
    int h = Serial.parseInt();

    Serial.println("Enter Width:  ");
    while(Serial.available() <3 ){}
    int hp = Serial.parseInt();

    float p = hp+l+h;
    Serial.println("---------------------------");
    Serial.println("---------------------------");
    Serial.print("parameter of the cube = ");
    Serial.print(p);
    Serial.println("cm");
    Serial.println("Thank you!");
  }
}





// void select_quntity(int shape_selected){

//   switch(shape_selected){
//     case 1:
//       circle_measurement();
//       break;
//     //case 2:
//     //   triangle_measurement();
//     // case 3:
//     //   rectangle_measurement();
//     // case 3:
//     //   cube_measument();
//     // default:
//     // Serial.print("Sorry, no shape selected!");  
//   }
// }


// //A function to calculate area or circumference of the circle
// int circle_measurement(){
  
//   Serial.println("What are you measuring? ");
//   Serial.println("1. Area");
//   Serial.println("2. Circumference");
//   while(Serial.available() == 0){

//   }
//   int menu = Serial.parseInt();
//   return menu;
// }



// void final_measurement1(int menu){
//   float Area;
//   int circumference;
//   int radius;

//   if(menu == 1){
//     Serial.println("Enter radius to find area: ");
//     while(Serial.available() == 0){

//     }
//     radius = Serial.parseInt();
//     Area = radius*radius*3.142857;
//     Serial.print(Area);

//   }else if(menu == 2){
//      Serial.println("Enter radius to find Circumference: ");
//     while(Serial.available()== 0){

//     }
//     radius = Serial.parseInt();
//     circumference = 2*radius*3.142857;
//     Serial.print("The circumference is: ");
//     Serial.println(circumference);
//   }
// }


// int select_quntity(int shape_selected){

//   int menu;
//   if(shape_selected == 1){
//      menu = circle_measurement();
//   }
//   return menu;
// }