"""
This code obtained from
https://gist.github.com/mkropat/7550097

The MIT License (MIT)

Copyright (c) 2014 Michael Kropat

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""

from __future__ import print_function

import ctypes, sys
from ctypes import windll, wintypes
from uuid import UUID

class GUID(ctypes.Structure):   # [1]
    _fields_ = [
        ("Data1", wintypes.DWORD),
        ("Data2", wintypes.WORD),
        ("Data3", wintypes.WORD),
        ("Data4", wintypes.BYTE * 8)
    ]

    def __init__(self, uuid_):
        ctypes.Structure.__init__(self)
        self.Data1, self.Data2, self.Data3, self.Data4[0], self.Data4[1], rest = uuid_.fields
        for i in range(2, 8):
            self.Data4[i] = rest>>(8 - i - 1)*8 & 0xff

class FOLDERID:     # [2]
    AccountPictures         = UUID('{008ca0b1-55b4-4c56-b8a8-4de4b299d3be}')
    AdminTools              = UUID('{724EF170-A42D-4FEF-9F26-B60E846FBA4F}')
    ApplicationShortcuts    = UUID('{A3918781-E5F2-4890-B3D9-A7E54332328C}')
    CameraRoll              = UUID('{AB5FB87B-7CE2-4F83-915D-550846C9537B}')
    CDBurning               = UUID('{9E52AB10-F80D-49DF-ACB8-4330F5687855}')
    CommonAdminTools        = UUID('{D0384E7D-BAC3-4797-8F14-CBA229B392B5}')
    CommonOEMLinks          = UUID('{C1BAE2D0-10DF-4334-BEDD-7AA20B227A9D}')
    CommonPrograms          = UUID('{0139D44E-6AFE-49F2-8690-3DAFCAE6FFB8}')
    CommonStartMenu         = UUID('{A4115719-D62E-491D-AA7C-E74B8BE3B067}')
    CommonStartup           = UUID('{82A5EA35-D9CD-47C5-9629-E15D2F714E6E}')
    CommonTemplates         = UUID('{B94237E7-57AC-4347-9151-B08C6C32D1F7}')
    Contacts                = UUID('{56784854-C6CB-462b-8169-88E350ACB882}')
    Cookies                 = UUID('{2B0F765D-C0E9-4171-908E-08A611B84FF6}')
    Desktop                 = UUID('{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}')
    DeviceMetadataStore     = UUID('{5CE4A5E9-E4EB-479D-B89F-130C02886155}')
    Documents               = UUID('{FDD39AD0-238F-46AF-ADB4-6C85480369C7}')
    DocumentsLibrary        = UUID('{7B0DB17D-9CD2-4A93-9733-46CC89022E7C}')
    Downloads               = UUID('{374DE290-123F-4565-9164-39C4925E467B}')
    Favorites               = UUID('{1777F761-68AD-4D8A-87BD-30B759FA33DD}')
    Fonts                   = UUID('{FD228CB7-AE11-4AE3-864C-16F3910AB8FE}')
    GameTasks               = UUID('{054FAE61-4DD8-4787-80B6-090220C4B700}')
    History                 = UUID('{D9DC8A3B-B784-432E-A781-5A1130A75963}')
    ImplicitAppShortcuts    = UUID('{BCB5256F-79F6-4CEE-B725-DC34E402FD46}')
    InternetCache           = UUID('{352481E8-33BE-4251-BA85-6007CAEDCF9D}')
    Libraries               = UUID('{1B3EA5DC-B587-4786-B4EF-BD1DC332AEAE}')
    Links                   = UUID('{bfb9d5e0-c6a9-404c-b2b2-ae6db6af4968}')
    LocalAppData            = UUID('{F1B32785-6FBA-4FCF-9D55-7B8E7F157091}')
    LocalAppDataLow         = UUID('{A520A1A4-1780-4FF6-BD18-167343C5AF16}')
    LocalizedResourcesDir   = UUID('{2A00375E-224C-49DE-B8D1-440DF7EF3DDC}')
    Music                   = UUID('{4BD8D571-6D19-48D3-BE97-422220080E43}')
    MusicLibrary            = UUID('{2112AB0A-C86A-4FFE-A368-0DE96E47012E}')
    NetHood                 = UUID('{C5ABBF53-E17F-4121-8900-86626FC2C973}')
    OriginalImages          = UUID('{2C36C0AA-5812-4b87-BFD0-4CD0DFB19B39}')
    PhotoAlbums             = UUID('{69D2CF90-FC33-4FB7-9A0C-EBB0F0FCB43C}')
    PicturesLibrary         = UUID('{A990AE9F-A03B-4E80-94BC-9912D7504104}')
    Pictures                = UUID('{33E28130-4E1E-4676-835A-98395C3BC3BB}')
    Playlists               = UUID('{DE92C1C7-837F-4F69-A3BB-86E631204A23}')
    PrintHood               = UUID('{9274BD8D-CFD1-41C3-B35E-B13F55A758F4}')
    Profile                 = UUID('{5E6C858F-0E22-4760-9AFE-EA3317B67173}')
    ProgramData             = UUID('{62AB5D82-FDC1-4DC3-A9DD-070D1D495D97}')
    ProgramFiles            = UUID('{905e63b6-c1bf-494e-b29c-65b732d3d21a}')
    ProgramFilesX64         = UUID('{6D809377-6AF0-444b-8957-A3773F02200E}')
    ProgramFilesX86         = UUID('{7C5A40EF-A0FB-4BFC-874A-C0F2E0B9FA8E}')
    ProgramFilesCommon      = UUID('{F7F1ED05-9F6D-47A2-AAAE-29D317C6F066}')
    ProgramFilesCommonX64   = UUID('{6365D5A7-0F0D-45E5-87F6-0DA56B6A4F7D}')
    ProgramFilesCommonX86   = UUID('{DE974D24-D9C6-4D3E-BF91-F4455120B917}')
    Programs                = UUID('{A77F5D77-2E2B-44C3-A6A2-ABA601054A51}')
    Public                  = UUID('{DFDF76A2-C82A-4D63-906A-5644AC457385}')
    PublicDesktop           = UUID('{C4AA340D-F20F-4863-AFEF-F87EF2E6BA25}')
    PublicDocuments         = UUID('{ED4824AF-DCE4-45A8-81E2-FC7965083634}')
    PublicDownloads         = UUID('{3D644C9B-1FB8-4f30-9B45-F670235F79C0}')
    PublicGameTasks         = UUID('{DEBF2536-E1A8-4c59-B6A2-414586476AEA}')
    PublicLibraries         = UUID('{48DAF80B-E6CF-4F4E-B800-0E69D84EE384}')
    PublicMusic             = UUID('{3214FAB5-9757-4298-BB61-92A9DEAA44FF}')
    PublicPictures          = UUID('{B6EBFB86-6907-413C-9AF7-4FC2ABF07CC5}')
    PublicRingtones         = UUID('{E555AB60-153B-4D17-9F04-A5FE99FC15EC}')
    PublicUserTiles         = UUID('{0482af6c-08f1-4c34-8c90-e17ec98b1e17}')
    PublicVideos            = UUID('{2400183A-6185-49FB-A2D8-4A392A602BA3}')
    QuickLaunch             = UUID('{52a4f021-7b75-48a9-9f6b-4b87a210bc8f}')
    Recent                  = UUID('{AE50C081-EBD2-438A-8655-8A092E34987A}')
    RecordedTVLibrary       = UUID('{1A6FDBA2-F42D-4358-A798-B74D745926C5}')
    ResourceDir             = UUID('{8AD10C31-2ADB-4296-A8F7-E4701232C972}')
    Ringtones               = UUID('{C870044B-F49E-4126-A9C3-B52A1FF411E8}')
    RoamingAppData          = UUID('{3EB685DB-65F9-4CF6-A03A-E3EF65729F3D}')
    RoamedTileImages        = UUID('{AAA8D5A5-F1D6-4259-BAA8-78E7EF60835E}')
    RoamingTiles            = UUID('{00BCFC5A-ED94-4e48-96A1-3F6217F21990}')
    SampleMusic             = UUID('{B250C668-F57D-4EE1-A63C-290EE7D1AA1F}')
    SamplePictures          = UUID('{C4900540-2379-4C75-844B-64E6FAF8716B}')
    SamplePlaylists         = UUID('{15CA69B3-30EE-49C1-ACE1-6B5EC372AFB5}')
    SampleVideos            = UUID('{859EAD94-2E85-48AD-A71A-0969CB56A6CD}')
    SavedGames              = UUID('{4C5C32FF-BB9D-43b0-B5B4-2D72E54EAAA4}')
    SavedSearches           = UUID('{7d1d3a04-debb-4115-95cf-2f29da2920da}')
    Screenshots             = UUID('{b7bede81-df94-4682-a7d8-57a52620b86f}')
    SearchHistory           = UUID('{0D4C3DB6-03A3-462F-A0E6-08924C41B5D4}')
    SearchTemplates         = UUID('{7E636BFE-DFA9-4D5E-B456-D7B39851D8A9}')
    SendTo                  = UUID('{8983036C-27C0-404B-8F08-102D10DCFD74}')
    SidebarDefaultParts     = UUID('{7B396E54-9EC5-4300-BE0A-2482EBAE1A26}')
    SidebarParts            = UUID('{A75D362E-50FC-4fb7-AC2C-A8BEAA314493}')
    SkyDrive                = UUID('{A52BBA46-E9E1-435f-B3D9-28DAA648C0F6}')
    SkyDriveCameraRoll      = UUID('{767E6811-49CB-4273-87C2-20F355E1085B}')
    SkyDriveDocuments       = UUID('{24D89E24-2F19-4534-9DDE-6A6671FBB8FE}')
    SkyDrivePictures        = UUID('{339719B5-8C47-4894-94C2-D8F77ADD44A6}')
    StartMenu               = UUID('{625B53C3-AB48-4EC1-BA1F-A1EF4146FC19}')
    Startup                 = UUID('{B97D20BB-F46A-4C97-BA10-5E3608430854}')
    System                  = UUID('{1AC14E77-02E7-4E5D-B744-2EB1AE5198B7}')
    SystemX86               = UUID('{D65231B0-B2F1-4857-A4CE-A8E7C6EA7D27}')
    Templates               = UUID('{A63293E8-664E-48DB-A079-DF759E0509F7}')
    UserPinned              = UUID('{9E3995AB-1F9C-4F13-B827-48B24B6C7174}')
    UserProfiles            = UUID('{0762D272-C50A-4BB0-A382-697DCD729B80}')
    UserProgramFiles        = UUID('{5CD7AEE2-2219-4A67-B85D-6C9CE15660CB}')
    UserProgramFilesCommon  = UUID('{BCBD3057-CA5C-4622-B42D-BC56DB0AE516}')
    Videos                  = UUID('{18989B1D-99B5-455B-841C-AB7C74E4DDFC}')
    VideosLibrary           = UUID('{491E922F-5643-4AF4-A7EB-4E7A138D8174}')
    Windows                 = UUID('{F38BF404-1D43-42F2-9305-67DE0B28FC23}')

class UserHandle:   # [3]
    current = wintypes.HANDLE(0)
    common  = wintypes.HANDLE(-1)

_CoTaskMemFree = windll.ole32.CoTaskMemFree     # [4]
_CoTaskMemFree.restype= None
_CoTaskMemFree.argtypes = [ctypes.c_void_p]

_SHGetKnownFolderPath = windll.shell32.SHGetKnownFolderPath     # [5] [3]
_SHGetKnownFolderPath.argtypes = [
    ctypes.POINTER(GUID), wintypes.DWORD, wintypes.HANDLE, ctypes.POINTER(ctypes.c_wchar_p)
]

'''
# Please keep this code around in-case we need to debug tricky installations
# http://stackoverflow.com/a/15016751/3257826
import pythoncom
from win32com.shell import shell, shellcon
from win32com import storagecon
import os
kfm = pythoncom.CoCreateInstance(shell.CLSID_KnownFolderManager, None,
        pythoncom.CLSCTX_INPROC_SERVER, shell.IID_IKnownFolderManager)
dir(kfm)
folders = kfm.GetFolderIds()
for folder in folders:
    print(folder)
try:
    docs_folder = kfm.GetFolder(shell.FOLDERID_Documents)
    docs_path = docs_folder.GetPath()
    print(docs_path)
except:
    pass
'''

class PathNotFoundException(Exception): pass
class PathNotVerifiableException(Exception): pass

def get_path(folderid, user_handle=UserHandle.common):
    fid = GUID(folderid)
    pPath = ctypes.c_wchar_p()
    pPathUnverified = ctypes.c_wchar_p()
    S_OK = 0
    KF_FLAG_DONT_VERIFY = 0x00004000
    result = _SHGetKnownFolderPath(ctypes.byref(fid), KF_FLAG_DONT_VERIFY, user_handle, ctypes.byref(pPathUnverified))
    exception = None
    if result != S_OK:
        exception = PathNotFoundException()
    else:
        result = _SHGetKnownFolderPath(ctypes.byref(fid), 0, user_handle, ctypes.byref(pPath))
        if result != S_OK:
            exception = PathNotVerifiableException()
            pPath = pPathUnverified
        else:
            _CoTaskMemFree(pPathUnverified)

    path = pPath.value
    _CoTaskMemFree(pPath)
    return (path, exception)


def get_folder_path(folder_id, user=None):
    if not user:
        user = UserHandle.current
    # We may want to support modifying the 'Default' user here too for SCCM-based installations.
    # New users created on the machine have their folders created by copying those of 'Default'.
    return get_path(folder_id, user)

if __name__ == '__main__':
    if len(sys.argv) < 2 or sys.argv[1] in ['-?', '/?']:
        print('python knownfolders.py FOLDERID {current|common}')
        sys.exit(0)

    try:
        folderid = getattr(FOLDERID, sys.argv[1])
    except AttributeError:
        print('Unknown folder id "%s"' % sys.argv[1], file=sys.stderr)
        sys.exit(1)

    try:
        if len(sys.argv) == 2:
            print(get_path(folderid))
        else:
            print(get_path(folderid, getattr(UserHandle, sys.argv[2])))
    except PathNotFoundException:
        print('Folder not found "%s"' % ' '.join(sys.argv[1:]), file=sys.stderr)
        sys.exit(1)

# [1] http://msdn.microsoft.com/en-us/library/windows/desktop/aa373931.aspx
# [2] http://msdn.microsoft.com/en-us/library/windows/desktop/dd378457.aspx
# [3] http://msdn.microsoft.com/en-us/library/windows/desktop/bb762188.aspx
# [4] http://msdn.microsoft.com/en-us/library/windows/desktop/ms680722.aspx
# [5] http://www.themacaque.com/?p=954
