package application;

import java.util.Scanner;

public class LCD implements TotalSumPrinter, ExitOptionImplement{

    private Receipt receipt;
    private BarcodesScanner barcodesScanner;
    private static final String ERROR_MESSAGE = "Invalid bar-code";
    private static final String PRODUCT_IS_NOT_FOUND_MESSAGE = "Product not found";
    private static final String EXIT = "exit";

    public LCD(){
        barcodesScanner = new BarcodesScanner();
        receipt = new Receipt();
    }

    public BarcodesScanner getBarcodesScanner() {
        return barcodesScanner;
    }

    public Receipt getReceipt() {
        return receipt;
    }

    public void searchingProduct(String barcode){
        barcodesScanner.oprtionalInputs(barcode);
        if(barcodesScanner.getIsBarcodeEmpty()){
            displayErrorMessage();
            barcodesScanner.setIsBarcodeEmpty(false);
        }else if(productIsNotFound(barcodesScanner.getProduct())){
            displayProductIsNotFoundMessage();
        }
        else{
            displayNameAndPriceOfProduct(barcodesScanner.getProduct());
            receipt.addProductToList(barcodesScanner.getProduct());
        }
    }

    public void window(){
        System.out.println("Write the barcode of a product");
        String barcode = "";
        Scanner sc = new Scanner(System.in);

        while(true){
            barcode = sc.nextLine();
            if(barcode.equalsIgnoreCase(EXIT)){
                break;
            }
            searchingProduct(barcode);
        }
        receipt.countTotalSum();
        printTotalSum();
    }
    private boolean productIsNotFound(Product product) {
        return product == null;
    }

    private void displayNameAndPriceOfProduct(Product product){
        System.out.println(product.getName() + " " + product.getPrice());
    }

    private void displayProductIsNotFoundMessage(){
        System.out.println(PRODUCT_IS_NOT_FOUND_MESSAGE);
    }

    private void displayErrorMessage(){
        System.out.println(ERROR_MESSAGE);
    }

    @Override
    public void printTotalSum(){
        System.out.println("============||LCD||============" +
                "\n******************************"+
                "\nTotal sum: " + receipt.getTotalSum() + "              *"+
                "\n******************************" +
                "\n===============================\n\n");
    }
}