package ss.week2;

import ss.utils.TextIO;

public class ThreeWayLamp {

    private int state = 0; //0 -> off, 1 -> low, 2 -> medium, 3 -> high
    private String[] states = new String[] {"off", "to low light", "to medium light", "to bright light"};

    void setOff() {
        state = 0;
        System.out.println("The lamp is set off");
    }

    void setLow() {
        state = 1;
        System.out.println("The lamp is set to low light");
    }

    void setMedium() {
        state = 2;
        System.out.println("The lamp is set to medium light");
    }

    void setHigh() {
        state = 3;
        System.out.println("The lamp is set to bright light");
    }

    void setNext() {
        state = (state + 1) % 4;
        System.out.println("The lamp is set " + states[state]);
    }

    void printState() {
        System.out.println("The lamp is currently set " + states[state]);
    }

    void showMenu() {
        System.out.println("OFF: Set the lamp to OFF (default value)\n"
                            + "LOW: Set the lamp to LOW\n"
                            + "MEDIUM: Set the lamp to MEDIUM\n"
                            + "HIGH: Set the lamp to HIGH\n"
                            + "STATE: Print the current setting of the lamp\n"
                            + "NEXT: Change to the next setting, observing the order OFF → LOW → MEDIUM → HIGH →\n"
                            + "OFF\n"
                            + "HELP: Show a help menu, explaining how the user should interact with the program\n"
                            + "EXIT: Quit the program");
    }

    void askInput() {
        String userInput;
        boolean exitApp = false;

        showMenu();

        while(!exitApp) {
            System.out.println("Enter command: ");
            userInput = TextIO.getlnString();

            switch(userInput) {
                case "OFF":
                    setOff();
                    break;

                case "LOW":
                    setLow();
                    break;

                case "MEDIUM":
                    setMedium();
                    break;

                case "HIGH":
                    setHigh();
                    break;

                case "STATE":
                    printState();
                    break;

                case "NEXT":
                    setNext();
                    break;

                case "HELP":
                    showMenu();
                    break;

                case "EXIT":
                    exitApp = true;
                    break;

                default:
                    System.out.println("Command not found");
                    break;
            }
        }

    }

    public static void main(String[] args) {
        ThreeWayLamp lamp = new ThreeWayLamp();
        lamp.askInput();
    }

}