# This code is part of Ansible, but is an independent component.
# This particular file snippet, and this file snippet only, is BSD licensed.
# Modules you write using this snippet, which is embedded dynamically by Ansible
# still belong to the author of the module, and may assign their own license
# to the complete work.
#
# (c) 2016 Red Hat Inc.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
#    * Redistributions of source code must retain the above copyright
#      notice, this list of conditions and the following disclaimer.
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#      and/or other materials provided with the distribution.
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import os
import time
import glob

from ansible.module_utils._text import to_text


def write_backup(module, host, contents, encoding='utf-8'):
    cwd = module._loader.get_basedir()
    if module._task._role is not None:
        cwd = module._task._role._role_path

    backup_path = os.path.join(cwd, 'backup')
    if not os.path.exists(backup_path):
        os.mkdir(backup_path)
    for existing_backup in glob.glob('%s/%s_config.*' % (backup_path, host)):
        os.remove(existing_backup)
    tstamp = time.strftime("%Y-%m-%d@%H:%M:%S", time.localtime(time.time()))
    filename = '%s/%s_config.%s' % (backup_path, host, tstamp)
    open(filename, 'w').write(to_text(contents, encoding=encoding))

    return filename