/**
 * Write a description of class Operations here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
import java.util.Scanner;
public class Operations
{
    /**
     * prompting a user for a command solving for that command
     * 
     */
    public static void printHelp(){
        System.out.println("\n? | + | - | * | / |");
        System.out.println("^ | sqrt | inverse |");
        System.out.println("cos | sine | tan | cos-1 | sin-1 | m+ | m- | MRC");
        System.out.println("log | ln | ex |");
        System.out.println("To exit the program enter exit");
        System.out.println("to clear display enter clrDisplay\n");
    }

    public static double runCommand()
    {
        // put your code here

        Scanner input = new Scanner(System.in);
        double result = 0.0;
        //String userInput = scanner.nextLine();
        scienticFunctions ScientificFunctions = new scienticFunctions();
        Memory memory = new Memory();
        DiplayMode displayMode = new DiplayMode();
        bonusFunctions bonusFunctions = new bonusFunctions();
        calculatorCoreFunctions calculatorCoreFunctions = new calculatorCoreFunctions();
        // Calculator calc = new ....
        while (true) {
            System.out.print("Enter a command: ");
            String command = input.next();
            if (command.equalsIgnoreCase("exit"))  {
                System.out.print("Thanks for calculating with us!");
                break;
            }
            else if (command.equalsIgnoreCase("+")){
                if (result != 0){
                    double numInput = Console.getDoubleInput("Enter number");
                    result = calculatorCoreFunctions.add(result, numInput);
                }
                else{
                    double firstNumber = Console.getDoubleInput("Enter first number");
                    double secondNumber = Console.getDoubleInput("Enter second number");
                    result = calculatorCoreFunctions.add(firstNumber, secondNumber);
                }
                Console.printResult(result);
                
            }
            else if (command.equalsIgnoreCase("-")){
                if (result != 0){
                    double numInput = Console.getDoubleInput("Enter number");
                    result = calculatorCoreFunctions.subtract(result, numInput);
                }
                else{
                    double firstNumber = Console.getDoubleInput("Enter first number");
                    double secondNumber = Console.getDoubleInput("Enter second number");
                    result = calculatorCoreFunctions.subtract(firstNumber, secondNumber);;
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("*")){
                if (result != 0){
                    double numInput = Console.getDoubleInput("Enter number");
                    result = calculatorCoreFunctions.multiply(result, numInput);
                }
                else{
                    double firstNumber = Console.getDoubleInput("Enter first number");
                    double secondNumber = Console.getDoubleInput("Enter second number");
                    result = calculatorCoreFunctions.multiply(firstNumber, secondNumber);;
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("/")){
                if (result != 0){
                    double numInput = Console.getDoubleInput("Enter number");
                    result = calculatorCoreFunctions.divide(result, numInput);
                }
                else{
                    double firstNumber = Console.getDoubleInput("Enter first number");
                    double secondNumber = Console.getDoubleInput("Enter second number");
                    result = calculatorCoreFunctions.divide(firstNumber, secondNumber);;
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("^")){
                if (result != 0){
                    double numInput = Console.getDoubleInput("Enter number");
                    result = calculatorCoreFunctions.exponent(result, numInput);
                }
                else{
                    double firstNumber = Console.getDoubleInput("Enter first number");
                    double secondNumber = Console.getDoubleInput("Enter second number");
                    result = calculatorCoreFunctions.exponent(firstNumber, secondNumber);;
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("sqrt"))  {
                if (result != 0){
                    result = calculatorCoreFunctions.sqrt(result);
                }
                else{
                    result = calculatorCoreFunctions.sqrt(Console.getDoubleInput("Enter number"));
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("inverse"))  {
                if (result != 0){
                    result = calculatorCoreFunctions.inverse(result);
                }
                else{
                    result = calculatorCoreFunctions.inverse(Console.getDoubleInput("Enter number"));
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("sine"))  {
                if (result != 0){
                    result = ScientificFunctions.sine(result);
                }
                else{
                    result = ScientificFunctions.sine(Console.getDoubleInput("Enter number"));
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("cos"))  {
                if (result != 0){
                    result = ScientificFunctions.cosine(result);
                }
                else{
                    result = ScientificFunctions.cosine(Console.getDoubleInput("Enter number"));
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("tan"))  {
                if (result != 0){
                    result = ScientificFunctions.tangent(result);
                }
                else{
                    result = ScientificFunctions.tangent(Console.getDoubleInput("Enter number"));
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("cos-1"))  {
                if (result != 0){
                    result = ScientificFunctions.inverseCosine(result);
                }
                else{
                    result = ScientificFunctions.inverseCosine(Console.getDoubleInput("Enter number"));
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("sin-1"))  {
                if (result != 0){
                    result = ScientificFunctions.inverseSine(result);
                }
                else{
                    result = ScientificFunctions.inverseSine(Console.getDoubleInput("Enter number"));
                }
                Console.printResult(result);
            }
            else if (command.equalsIgnoreCase("tan-1"))  {
                if (result != 0){
                    result = ScientificFunctions.inverseTangent(result);
                }
                else{
                    result = ScientificFunctions.inverseTangent(Console.getDoubleInput("Enter number"));
                }
                Console.printResult(result);
            }
            else if(command.equalsIgnoreCase("M+")){
                memory.storeInMemory(result);
                Console.printResult(result);
            }

            else if (command.equalsIgnoreCase("M-")){
                Console.printResult(memory.clearMemory());
            }

            else if (command.equalsIgnoreCase("MRC")){
                Console.printResult(memory.retrieveFromMemory());
            }

            else if (command.equalsIgnoreCase("switchmode")){
                displayMode.setResult(result);
                String mode = displayMode.enterMode();
                //System.out.println(mode);
                displayMode.switchDisplayMode(mode);

            }
            else if (command.equalsIgnoreCase("log")){
                Console.printResult(bonusFunctions.LogBaseTenOfAnumber(result));
            }
            else if (command.equalsIgnoreCase("ln")){
                Console.printResult(bonusFunctions.naturalLogLn(result));
            }
            else if (command.equalsIgnoreCase("ex")){
                Console.printResult(bonusFunctions.exponential(result));
            }
            else if(command.equalsIgnoreCase("?")){
                printHelp();
            }
            else if(command.equalsIgnoreCase("clrDisplay")){
                result = 0.0;
            }
            else{
                Console.println("Invalid command please press ? for help");
            }
            //firstNumber = result;
            // and on and on
        }
        return result;

    }

    //Add CommentCollapse 

}