# Copyright (C) 2005-2023 Splunk Inc. All Rights Reserved.

import sys
import os

try:
    from splunk.clilib.bundle_paths import make_splunkhome_path
except ImportError:
    # Added the below method for DATF compatibility
    def make_splunkhome_path(path_list):
        relpath = os.path.normpath(os.path.join(*path_list))
        splunk_home = os.environ.get("SPLUNK_HOME", '')
        fullpath = os.path.normpath(os.path.join(splunk_home, relpath))
        # Check that we haven't escaped from intended parent directories.
        if os.path.relpath(fullpath, splunk_home)[0:2] == '..':
            raise ValueError('Illegal escape from parent directory "%s": %s' %
                             (splunk_home, fullpath))
        return fullpath


def add_to_sys_path(paths, prepend=False):
    for path in paths:
        if prepend:
            if path in sys.path:
                sys.path.remove(path)
            sys.path.insert(0, path)
        elif path not in sys.path:
            sys.path.append(path)


def add_python_version_specific_paths():
    '''
        Adds extra paths for libraries specific to Python2 or Python3,
        determined at a runtime
    '''
    # We should not rely on core enterprise packages:
    if sys.version_info >= (3, 0):
        add_to_sys_path([make_splunkhome_path(['etc', 'apps', 'SA-ITOA', 'lib', 'py3'])], prepend=True)
    else:
        add_to_sys_path([make_splunkhome_path(['etc', 'apps', 'SA-ITOA', 'lib', 'py2'])], prepend=True)

    # Common libraries like future
    add_to_sys_path([make_splunkhome_path(['etc', 'apps', 'SA-ITOA', 'lib', 'py23'])], prepend=True)

    from six.moves import reload_module
    try:
        if 'future' in sys.modules:
            import future
            reload_module(future)
    except Exception:
        '''noop: future was not loaded yet'''


# Add lib path to import paths for packages
add_to_sys_path([make_splunkhome_path(['etc', 'apps', 'SA-ITOA', 'lib'])])

# Ensure the following paths are resolved first to avoid potential conflicts from other apps
add_to_sys_path([make_splunkhome_path(['etc', 'apps', 'SA-ITOA', 'lib', 'SA_ITOA_app_common'])], prepend=True)
add_to_sys_path([make_splunkhome_path(['etc', 'apps', 'SA-UserAccess', 'lib'])])

# Add extra python2 or python3 paths
add_python_version_specific_paths()