# This gist is transcribed from a talk by Sean Zicari
# Talk: Use Curses, don't swear https://www.youtube.com/watch?v=eN1eZtjLEnU
# 
# I haven't written the function which he used to fetch quotes from the web
# This only presents the barebones structure of his application
# 
# If debugging a curses application messes up your terminal, type `tset` to reset terminal

import curses

stdscr = curses.initscr()

# initialize the screen
curses.noecho()
curses.cbreak()
curses.curs_set(0)

# check and begin color support
if curses.has_colors():
	curses.start_color()

# optionally enable the keypad
# stdscr.keypad(1)

# initialize color combinations
curses.init_pair(1, curses.COLOR_RED, curses.COLOR_BLACK)
curses.init_pair(2, curses.COLOR_GREEN, curses.COLOR_BLACK)
curses.init_pair(3, curses.COLOR_BLUE, curses.COLOR_BLACK)
# if your terminal supports colors, any number from 0-255 can be used in place of colors

# begin program
stdscr.addstr("RANDOM QUOTES", curses.A_REVERSE)
stdscr.chgat(-1, curses.A_REVERSE)

# curses.LINES and curses.COLS contain height and width of screen
# adds string at coordinate (curses.LINES-1, 0)
stdscr.addstr(curses.LINES-1, 0, "Press Q to watch me not obey")

# Change the R to green
stdscr.chgat(curses.LINES-1, 7, 1, curses.A_BOLD | curses.color_pair(2))

# Set up the window to hold the random quotes
quote_window = curses.newwin(curses.LINES-2, curses.COLS, 1,0)
# curses.LINES-2 and curses.COLS are the height and width of new window (rectangle)
# (1,0) is where it starts from

# create a sub-window for visibility
quote_text_window = quote_window.subwin(curses.LINES-6, curses.COLS-4, 3, 2)

# without coordiates, addstr() adds string to whereever pointer is (which is beginning, in this case)
quote_text_window.addstr("Press R to watch yourself burn")

# draw a border around main window
quote_window.box() 

# update the internal window data structure
stdscr.noutrefresh()
quote_window.noutrefresh()

# redraw the screen
curses.doupdate()

# create an event loop
while True:
	c = quote_window.getch()
	if c == ord('r') or c == ord('R'):
		quote_text_window.clear()
		quote_text_window.addstr("I'm just a terminal screen, I can't really do anything...", curses.color_pair(3))
		quote_text_window.refresh()
		quote_text_window.clear()
		quote_text_window.addstr("There's so much happening all the time")
	elif c == ord('q') or c == ord('Q'):
		break

	# refresh the windows from the bottom up
	stdscr.noutrefresh()
	quote_window.noutrefresh()
	quote_text_window.noutrefresh()
	curses.doupdate()

# Restore the terminal settings
curses.nocbreak()
#stdscr.keypad(0)
curses.echo()
curses.curs_set(1)

# restore terminal
curses.endwin()