# -*- coding: utf-8 -*-

"""
System File Locations
Retrieves common system path names on Windows XP/Vista
Depends only on ctypes, and retrieves path locations in Unicode
"""

import ctypes
from ctypes import windll, wintypes

__license__ = "MIT"
__version__ = "0.2"
__author__ = "Ryan Ginstrom"
__description__ = "Retrieves common Windows system paths as Unicode strings"

class PathConstants(object):
    """
    Define constants here to avoid dependency on shellcon.
    Put it in a class to avoid polluting namespace
    """

    CSIDL_DESKTOP = 0
    CSIDL_PROGRAMS = 2
    CSIDL_PERSONAL = 5
    CSIDL_FAVORITES = 6
    CSIDL_STARTUP = 7
    CSIDL_RECENT = 8
    CSIDL_SENDTO = 9
    CSIDL_BITBUCKET = 10
    CSIDL_STARTMENU = 11
    CSIDL_MYDOCUMENTS = 12
    CSIDL_MYMUSIC = 13
    CSIDL_MYVIDEO = 14
    CSIDL_DESKTOPDIRECTORY = 16
    CSIDL_DRIVES = 17
    CSIDL_NETWORK = 18
    CSIDL_NETHOOD = 19
    CSIDL_FONTS = 20
    CSIDL_TEMPLATES = 21
    CSIDL_COMMON_STARTMENU = 22
    CSIDL_COMMON_PROGRAMS = 23
    CSIDL_COMMON_STARTUP = 24
    CSIDL_COMMON_DESKTOPDIRECTORY = 25
    CSIDL_APPDATA = 26
    CSIDL_PRINTHOOD = 27
    CSIDL_LOCAL_APPDATA = 28
    CSIDL_ALTSTARTUP = 29
    CSIDL_COMMON_ALTSTARTUP = 30
    CSIDL_COMMON_FAVORITES = 31
    CSIDL_INTERNET_CACHE = 32
    CSIDL_COOKIES = 33
    CSIDL_HISTORY = 34
    CSIDL_COMMON_APPDATA = 35
    CSIDL_WINDOWS = 36
    CSIDL_SYSTEM = 37
    CSIDL_PROGRAM_FILES = 38
    CSIDL_MYPICTURES = 39
    CSIDL_PROFILE = 40
    CSIDL_SYSTEMX86 = 41
    CSIDL_PROGRAM_FILESX86 = 42
    CSIDL_PROGRAM_FILES_COMMON = 43
    CSIDL_PROGRAM_FILES_COMMONX86 = 44
    CSIDL_COMMON_TEMPLATES = 45
    CSIDL_COMMON_DOCUMENTS = 46
    CSIDL_COMMON_ADMINTOOLS = 47
    CSIDL_ADMINTOOLS  = 48
    CSIDL_CONNECTIONS = 49
    CSIDL_COMMON_MUSIC = 53
    CSIDL_COMMON_PICTURES = 54
    CSIDL_COMMON_VIDEO = 55
    CSIDL_RESOURCES = 56
    CSIDL_RESOURCES_LOCALIZED = 57
    CSIDL_COMMON_OEM_LINKS = 58
    CSIDL_CDBURN_AREA = 59
    # 60 unused
    CSIDL_COMPUTERSNEARME = 61

class WinPathsException(Exception):
    pass

def _err_unless_zero(result):
    if result == 0:
        return result
    else:
        raise WinPathsException("Failed to retrieve windows path: %s" % result)

_SHGetFolderPath = windll.shell32.SHGetFolderPathW
_SHGetFolderPath.argtypes = [wintypes.HWND,
                            ctypes.c_int,
                            wintypes.HANDLE,
                            wintypes.DWORD, wintypes.LPCWSTR]
_SHGetFolderPath.restype = _err_unless_zero

def _get_path_buf(csidl):
    path_buf = ctypes.create_unicode_buffer(wintypes.MAX_PATH)
    result = _SHGetFolderPath(0, csidl, 0, 0, path_buf)
    return path_buf.value

def get_local_appdata():
    return _get_path_buf(PathConstants.CSIDL_LOCAL_APPDATA)

def get_appdata():
    return _get_path_buf(PathConstants.CSIDL_APPDATA)

def get_desktop():
    return _get_path_buf(PathConstants.CSIDL_DESKTOP)

def get_programs():
    """current user -> Start menu -> Programs"""
    return _get_path_buf(PathConstants.CSIDL_PROGRAMS)

def get_admin_tools():
    """current user -> Start menu -> Programs -> Admin tools"""
    return _get_path_buf(PathConstants.CSIDL_ADMINTOOLS)

def get_common_admin_tools():
    """all users -> Start menu -> Programs -> Admin tools"""
    return _get_path_buf(PathConstants.CSIDL_COMMON_ADMINTOOLS)

def get_common_appdata():
    return _get_path_buf(PathConstants.CSIDL_COMMON_APPDATA)

def get_common_documents():
    return _get_path_buf(PathConstants.CSIDL_COMMON_DOCUMENTS)

def get_cookies():
    return _get_path_buf(PathConstants.CSIDL_COOKIES)

def get_history():
    return _get_path_buf(PathConstants.CSIDL_HISTORY)

def get_internet_cache():
    return _get_path_buf(PathConstants.CSIDL_INTERNET_CACHE)

def get_my_pictures():
    """Get the user's My Pictures folder"""
    return _get_path_buf(PathConstants.CSIDL_MYPICTURES)

def get_personal():
    """AKA 'My Documents'"""
    return _get_path_buf(PathConstants.CSIDL_PERSONAL)

get_my_documents = get_personal

def get_program_files():
    return _get_path_buf(PathConstants.CSIDL_PROGRAM_FILES)

def get_program_files_common():
    return _get_path_buf(PathConstants.CSIDL_PROGRAM_FILES_COMMON)

def get_system():
    """Use with care and discretion"""
    return _get_path_buf(PathConstants.CSIDL_SYSTEM)

def get_windows():
    """Use with care and discretion"""
    return _get_path_buf(PathConstants.CSIDL_WINDOWS)

def get_favorites():
    return _get_path_buf(PathConstants.CSIDL_FAVORITES)

def get_startup():
    """current user -> start menu -> programs -> startup"""
    return _get_path_buf(PathConstants.CSIDL_STARTUP)

def get_recent():
    return _get_path_buf(PathConstants.CSIDL_RECENT)