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# -*- coding: utf-8 -*-
'''
Apache state

.. versionadded:: 2014.7.0

Allows for inputting a yaml dictionary into a file for apache configuration
files.

The variable ``this`` is special and signifies what should be included with
the above word between angle brackets (<>).

.. code-block:: yaml

    /etc/httpd/conf.d/website.com.conf:
      apache.configfile:
        - config:
          - VirtualHost:
              this: '*:80'
              ServerName:
                - website.com
              ServerAlias:
                - www.website.com
                - dev.website.com
              ErrorLog: logs/website.com-error_log
              CustomLog: logs/website.com-access_log combined
              DocumentRoot: /var/www/vhosts/website.com
              Directory:
                this: /var/www/vhosts/website.com
                Order: Deny,Allow
                Deny from: all
                Allow from:
                  - 127.0.0.1
                  - 192.168.100.0/24
                Options:
                  - Indexes
                  - FollowSymlinks
                AllowOverride: All

.. versionchanged:: 2018.3

Allows having the same section container multiple times (e.g. <Directory /path/to/dir>).

YAML structure stays the same only replace dictionary with a list.

When a section container does not have mandatory attribute, such as <Else>,
it still needs keyword ``this`` with empty string (or "\b" if nicer output is required - without space).

.. code-block:: yaml

    /etc/httpd/conf.d/website.com.conf:
      apache.configfile:
        - config:
          - VirtualHost:
              - this: '*:80'
              - ServerName:
                - website.com
              - DocumentRoot: /var/www/vhosts/website.com
              - Directory:
                  this: /var/www/vhosts/website.com
                  Order: Deny,Allow
                  Deny from: all
                  Allow from:
                    - 127.0.0.1
                    - 192.168.100.0/24
                  Options:
                    - Indexes
                    - FollowSymlinks
                  AllowOverride: All
              - Directory:
                - this: /var/www/vhosts/website.com/private
                - Order: Deny,Allow
                - Deny from: all
                - Allow from:
                  - 127.0.0.1
                  - 192.168.100.0/24
                - If:
                    this: some condition
                    do: something
                - Else:
                    this:
                    do: something else
                - Else:
                    this: "\b"
                    do: another thing
'''

from __future__ import absolute_import, with_statement, print_function, unicode_literals

# Import python libs
import os

# Import Salt libs
import salt.utils.files
import salt.utils.stringutils


def __virtual__():
    return 'apache.config' in __salt__


def configfile(name, config):
    ret = {'name': name,
           'changes': {},
           'result': None,
           'comment': ''}

    configs = __salt__['apache.config'](name, config, edit=False)
    current_configs = ''
    if os.path.exists(name):
        with salt.utils.files.fopen(name) as config_file:
            current_configs = salt.utils.stringutils.to_unicode(config_file.read())

    if configs.strip() == current_configs.strip():
        ret['result'] = True
        ret['comment'] = 'Configuration is up to date.'
        return ret
    elif __opts__['test']:
        ret['comment'] = 'Configuration will update.'
        ret['changes'] = {
            'old': current_configs,
            'new': configs
        }
        ret['result'] = None
        return ret

    try:
        with salt.utils.files.fopen(name, 'w') as config_file:
            print(salt.utils.stringutils.to_str(configs), file=config_file)
        ret['changes'] = {
            'old': current_configs,
            'new': configs
        }
        ret['result'] = True
        ret['comment'] = 'Successfully created configuration.'
    except Exception as exc:
        ret['result'] = False
        ret['comment'] = 'Failed to create apache configuration.'

    return ret

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