#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License,
    or (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    See the GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, see <http://www.gnu.org/licenses/>.

    @author: RaNaN

	This modules inits working directories and global variables, pydir and homedir
"""

from os import makedirs, path, chdir
from os.path import join
import sys
from sys import argv, platform

from . import __dev__

import __builtin__

__builtin__.owd = path.abspath("") #original working directory
__builtin__.pypath = path.abspath(path.join(__file__, "..", ".."))

# Before changing the cwd, the abspath of the module must be manifested
if 'pyload' in sys.modules:
    rel_pyload = sys.modules['pyload'].__path__[0]
    abs_pyload = path.abspath(rel_pyload)
    if abs_pyload != rel_pyload:
        sys.modules['pyload'].__path__.insert(0, abs_pyload)

sys.path.append(join(pypath, "pyload", "lib"))

homedir = ""

if platform == 'nt':
    homedir = path.expanduser("~")
    if homedir == "~":
        import ctypes

        CSIDL_APPDATA = 26
        _SHGetFolderPath = ctypes.windll.shell32.SHGetFolderPathW
        _SHGetFolderPath.argtypes = [ctypes.wintypes.HWND,
                                     ctypes.c_int,
                                     ctypes.wintypes.HANDLE,
                                     ctypes.wintypes.DWORD, ctypes.wintypes.LPCWSTR]

        path_buf = ctypes.wintypes.create_unicode_buffer(ctypes.wintypes.MAX_PATH)
        result = _SHGetFolderPath(0, CSIDL_APPDATA, 0, 0, path_buf)
        homedir = path_buf.value
else:
    homedir = path.expanduser("~")

__builtin__.homedir = homedir

configdir = None
args = " ".join(argv)
# dirty method to set configdir from commandline arguments
if "--configdir=" in args:
    for arg in argv:
        if arg.startswith("--configdir="):
            configdir = arg.replace('--configdir=', '').strip()

elif "nosetests" in args:
    print "Running in test mode"
    configdir = join(pypath, "tests", "config")

elif path.exists(path.join(pypath, "pyload", "config", "configdir")):
    f = open(path.join(pypath, "pyload", "config", "configdir"), "rb")
    c = f.read().strip()
    f.close()
    configdir = path.join(pypath, c)

# default config dir
if not configdir:
    # suffix when running dev version
    dev = "-dev" if __dev__ else ""
    configname = ".pyload" if platform in ("posix", "linux2", "darwin") else "pyload"
    configdir = path.join(homedir, configname + dev)

if not path.exists(configdir):
    makedirs(configdir, 0700)

__builtin__.configdir = configdir
chdir(configdir)

#print "Using %s as working directory." % configdir