//
// Created by caleb on 3/16/24.
//

#include <vector>
#include <iostream>
#include <ncurses.h>
#include "simpleMenu.h"

/*
 * Code ported over from my MP2 Project that generates a menu,
 * except now it's been modified so that it has a generic interface.
 */

int simpleMenu(std::vector<std::string> menuItems) {
    static int selection = 0;
    static int *selectionPointer = &selection;
    initscr();
    raw();
    keypad(stdscr, TRUE);
    noecho();
    //clear();
    int ch;
    do {
        switch (ch) {
            case KEY_UP:
                --selection;
                break;

            case KEY_DOWN:
                ++selection;
                break;
            case '\n':
                getch();
                endwin();
                return selection;
                break;
            default:
                break;
        }
        // Ensure selection stays within bounds
        selection = (selection < 0) ? (menuItems.size() - 1) : selection;
        selection = (selection > (menuItems.size() - 1)) ? 0 : selection;
        //std::system("clear");
        move(0, 0);
        printw("%s", printMenu(selectionPointer, menuItems).c_str());
        refresh();
    } while ((ch = getch()) != '#');
    getch();
    endwin();
    exit(0);
}

std::string printMenu(int *selection, std::vector<std::string> menu) {
    std::string outputString = "";
    std::vector<std::string> cursor = {"> "};
    // append empty space to cursor var
    for (int i = 0; i < (menu.size() - 1); ++i) {
        cursor.emplace_back("  ");
    }
    std::string temp;
    for (int j = 0; j < *selection; ++j) {
        temp = cursor[j];
        cursor[j] = cursor[j + 1];
        cursor[j + 1] = temp;
    }
    //cursor[0] = temp;
    outputString.append("Use the arrow keys to navigate the menu. Press # to exit.\n");
    for (int i = 0; i < menu.size(); ++i) {
        outputString.append(cursor[i]);
        outputString.append(menu[i]);
        outputString.append("\n");
    }
    return outputString;
}