#!/usr/bin/env python3


import curses,time,json

dataPath = '/home/lickthecheese/nlong/nlong.json'

def main(stdscr):
    stdscr.clear()
    stdscr.refresh()
    k=''
    height, width = stdscr.getmaxyx()
    vx = vy = tx = ty = 0
    cx = width // 2
    cy = height // 2
    stdscr.move(cy,cx)
    while True:
        k = stdscr.getkey()

        stdscr.clear()

        height, width = stdscr.getmaxyx()
        
        # detect where to move cursor
        if k == 'KEY_UP':
            cy += -1
        if k == 'KEY_DOWN':
            cy += 1
        if k == 'KEY_LEFT':
            cx += -1
        if k == 'KEY_RIGHT':
            cx += 1

        # enter view move mode
        if k == '&':
            stdscr.addstr(height-1, 0, 'Welcome to switch view mode. press an arrow key to move the view or a if you wanted a &'[:width-1])
            k = stdscr.getkey()
            if k == 'a':
                pass
            if k == 'KEY_UP':
                vy += -1
            if k == 'KEY_DOWN':
                vy += 1
            if k == 'KEY_LEFT':
                vx += -1
            if k == 'KEY_RIGHT':
                vx += 1

        # make sure the cursor is on the screen
        # this is not nessesary for the view as it is infinite
        cx = max(0, cx)
        cx = min(width-1, cx)

        cy = max(0, cy)
        cy = min(height-1, cy)

        # calculate true position
        tx = cx + (vx * width) - width // 2
        ty = cy + (vy * height) - height // 2

        # display some info
        stdscr.addstr(height-1, 0, 'x: {}, y: {}, arrow keys to move, & key to move to the next pane'.format(tx, ty)[:width-1]) 


        # move the cursor where its actually supposed to be
        stdscr.move(cy,cx)

        #print(k) # debug keycodes

       


if __name__ == "__main__":
    curses.wrapper(main)
    print('bye!')