"""
From Andre Burgaud's Blog, from the CTypes Wiki:
http://www.burgaud.com/bring-colors-to-the-windows-console-with-python/

Colors text in console mode application (win32).
Uses ctypes and Win32 methods SetConsoleTextAttribute and
GetConsoleScreenBufferInfo.

$Id: color_console.py 534 2009-05-10 04:00:59Z andre $
"""

from ctypes import windll, Structure, c_short, c_ushort, byref

SHORT = c_short
WORD = c_ushort

class COORD(Structure):
  """struct in wincon.h."""
  _fields_ = [
    ("X", SHORT),
    ("Y", SHORT)]

class SMALL_RECT(Structure):
  """struct in wincon.h."""
  _fields_ = [
    ("Left", SHORT),
    ("Top", SHORT),
    ("Right", SHORT),
    ("Bottom", SHORT)]

class CONSOLE_SCREEN_BUFFER_INFO(Structure):
  """struct in wincon.h."""
  _fields_ = [
    ("dwSize", COORD),
    ("dwCursorPosition", COORD),
    ("wAttributes", WORD),
    ("srWindow", SMALL_RECT),
    ("dwMaximumWindowSize", COORD)]

# winbase.h
STD_INPUT_HANDLE = -10
STD_OUTPUT_HANDLE = -11
STD_ERROR_HANDLE = -12

# wincon.h
FOREGROUND_BLACK     = 0x0000
FOREGROUND_BLUE      = 0x0001
FOREGROUND_GREEN     = 0x0002
FOREGROUND_CYAN      = 0x0003
FOREGROUND_RED       = 0x0004
FOREGROUND_MAGENTA   = 0x0005
FOREGROUND_YELLOW    = 0x0006
FOREGROUND_GREY      = 0x0007
FOREGROUND_INTENSITY = 0x0008 # foreground color is intensified.

BACKGROUND_BLACK     = 0x0000
BACKGROUND_BLUE      = 0x0010
BACKGROUND_GREEN     = 0x0020
BACKGROUND_CYAN      = 0x0030
BACKGROUND_RED       = 0x0040
BACKGROUND_MAGENTA   = 0x0050
BACKGROUND_YELLOW    = 0x0060
BACKGROUND_GREY      = 0x0070
BACKGROUND_INTENSITY = 0x0080 # background color is intensified.

stdout_handle = windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
SetConsoleTextAttribute = windll.kernel32.SetConsoleTextAttribute
GetConsoleScreenBufferInfo = windll.kernel32.GetConsoleScreenBufferInfo

def get_text_attr():
  csbi = CONSOLE_SCREEN_BUFFER_INFO()
  GetConsoleScreenBufferInfo(stdout_handle, byref(csbi))
  return csbi.wAttributes

DEFAULT_COLORS = get_text_attr()

class Terminal(object):
    COLOR = {
        'black': 0x0000,
        'blue': 0x0001,
        'green': 0x0002,
        'cyan': 0x0003,
        'red': 0x0004,
        'magenta': 0x0005,
        'yellow': 0x0006,
        'gray': 0x0007
    }
    BRIGHT_INTENSITY = 0x0008
    BACKGROUND_SHIFT = 4

    @classmethod
    def set_color(cls, color):
        """
        color: str - color definition string
        """
        color_code = 0
        if color.startswith('bright'):
            color_code |= cls.BRIGHT_INTENSITY
            color = color[len('bright'):]
        color_code |= Terminal.COLOR[color]
        SetConsoleTextAttribute(stdout_handle, color_code)

    @classmethod
    def reset_color(cls):
        SetConsoleTextAttribute(stdout_handle, DEFAULT_COLORS)

    @classmethod
    def clear_right(cls):
        pass
