/**
 * Created by Allison 5/25/2018
 * 
 * This class takes strings and returns them as numbers
 * based on the display mode and trig units mode for 
 * ints/doubles and angles respectively.
 */
public class NumericInputParser
{
    private String trigUnitsMode; // Will be equal to "rad" or "deg"
    private String displayMode; // Will be equal to "dec", "bin", "hex", or "oct"

    /**
     * Constructor for objects of class NumericInputParser
     */
    public NumericInputParser()
    {
        trigUnitsMode = "rad";
        displayMode = "dec";
    }
    
    //Display Mode methods
    public String switchDisplayMode() {
        switch (displayMode){
            case "dec" :
                displayMode = "bin";
                break;
            case "bin" :
                displayMode = "hex";
                break;
            case "hex" :
                displayMode = "oct";
                break;
            case "oct" :
                displayMode = "dec";
        }
        return displayMode;
    }
    public String switchDisplayMode(String mode) {
        displayMode = mode;
        return displayMode;
    }
    public String getDisplayMode() {
        return displayMode;
    }
    
    
    //Trig mode methods
    public String switchUnitsMode(){
       trigUnitsMode = (trigUnitsMode == "rad") ? "deg" : "rad";
       //println("Trig units changed to %s", trigUnitsMode);
       return trigUnitsMode;
    }
    public String switchUnitsMode(String mode){
        trigUnitsMode = mode;
        //println("Trig units changed to %s", trigUnitsMode);
        return trigUnitsMode;
    }
    public String getTrigUnitsMode(){
        return trigUnitsMode;
    }
    
    
    public double getDouble(String input) {
        double val = 0;
        switch (displayMode) {
            case "dec" :
                val = Integer.parseInt(input, 10);
                break;
            case "bin" :
                val = Integer.parseInt(input, 2);
                break;
            case "hex" :
                val = Integer.parseInt(input, 16);
                break;
            case "oct" :
                val = Integer.parseInt(input, 8);
        }
        return val;
    }
    public int getInt(String input) {
        int val = 0;
        switch (displayMode) {
            case "dec" :
                val = Integer.parseInt(input, 10);
                break;
            case "bin" :
                val = Integer.parseInt(input, 2);
                break;
            case "hex" :
                val = Integer.parseInt("#" + input.toUpperCase(), 16);
                break;
            case "oct" :
                val = Integer.parseInt(input, 8);
        }
        return val;
    }
    //Because of the way this works, all input and results outside of
    //base 10 will be truncated 
    public String getFormattedNumber(double input){
        String formatted = "";
        switch (displayMode) {
            case "dec" :
                formatted = Double.toString(input);
                break;
            case "bin" :
                formatted = Integer.toBinaryString((int) input);
                break;
            case "hex" :
                formatted = Integer.toHexString((int) input);
                break;
            case "oct" :
                formatted = Integer.toOctalString((int) input);
        }
        return formatted;
    }
    //Trigonometry methods
    
    //Because java Math does sin, cos, and tan in radians, all
    //arguments passed to Calculator will be in radians.
    public double getAngle(String input) {
        double angle = Double.parseDouble(input);
        angle = trigUnitsMode == "deg" ? (angle*(Math.PI/180)) : angle; 
        return angle;
    }
    public String getFormattedAngle(double angle) {
        String angleString = trigUnitsMode == "deg" ? Double.toString(angle*(180/Math.PI)) : Double.toString(angle);
        return angleString;
    }
}