#!/usr/bin/python
#
# Copyright (c) 2018 Zim Kalinowski, (@zikalino)
#
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import absolute_import, division, print_function
__metaclass__ = type


DOCUMENTATION = '''
---
module: azure_rm_virtualmachineextension_info
version_added: "0.1.2"
short_description: Get Azure Virtual Machine Extension facts
description:
    - Get facts of Azure Virtual Machine Extension.

options:
    resource_group:
        description:
            - The name of the resource group.
        required: True
        type: str
    virtual_machine_name:
        description:
            - The name of the virtual machine containing the extension.
        required: True
        type: str
    name:
        description:
            - The name of the virtual machine extension.
        type: str
    tags:
        description:
            - Limit results by providing a list of tags. Format tags as 'key' or 'key:value'.
        type: list
        elements: str

extends_documentation_fragment:
    - azure.azcollection.azure

author:
    - Zim Kalinowski (@zikalino)

'''

EXAMPLES = '''
- name: Get information on specific Virtual Machine Extension
  azure_rm_virtualmachineextension_info:
    resource_group: myResourceGroup
    virtual_machine_name: myvm
    name: myextension

- name: List installed Virtual Machine Extensions
  azure_rm_virtualmachineextension_info:
    resource_group: myResourceGroup
    virtual_machine_name: myvm
'''

RETURN = '''
extensions:
    description:
        - A list of dictionaries containing facts for Virtual Machine Extension.
    returned: always
    type: complex
    contains:
        id:
            description:
                - Resource ID.
            returned: always
            type: str
            sample: "/subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/myResourceGroup/providers/Microsoft.Compute/myvm/testVM/extens
                     ions/myextension"
        resource_group:
            description:
                - Resource group name.
            returned: always
            type: str
            sample: myResourceGroup
        virtual_machine_name:
            description:
                - Virtual machine name.
            returned: always
            type: str
            sample: myvm
        name:
            description:
                - Virtual machine name.
            returned: always
            type: str
            sample: myextension
        location:
            description:
                - The resource location.
            returned: always
            type: str
            sample: eastus
        publisher:
            description:
                - Extension publisher.
            returned: always
            type: str
            sample: Microsoft.Azure.Extensions
        type:
            description:
                - Extension type.
            returned: always
            type: str
            sample: CustomScript
        settings:
            description:
                - Extension specific settings dictionary.
            returned: always
            type: dict
            sample: { 'commandToExecute':'hostname' }
        auto_upgrade_minor_version:
            description:
                - Auto upgrade minor version flag.
            returned: always
            type: bool
            sample: true
        enable_automatic_upgrade:
            description:
                - Enable automatic upgrade flag.
            returned: always
            type: bool
            sample: true
        tags:
            description:
                - Resource tags.
            returned: always
            type: dict
            sample: { "mytag":"abc" }
        provisioning_state:
            description:
                - Provisioning state of the extension.
            returned: always
            type: str
            sample: Succeeded
'''

from ansible_collections.azure.azcollection.plugins.module_utils.azure_rm_common import AzureRMModuleBase

try:
    from azure.core.exceptions import ResourceNotFoundError
except ImportError:
    # This is handled in azure_rm_common
    pass


class AzureRMVirtualMachineExtensionInfo(AzureRMModuleBase):
    def __init__(self):
        # define user inputs into argument
        self.module_arg_spec = dict(
            resource_group=dict(
                type='str',
                required=True
            ),
            virtual_machine_name=dict(
                type='str',
                required=True
            ),
            name=dict(
                type='str'
            ),
            tags=dict(
                type='list',
                elements='str'
            )
        )
        # store the results of the module operation
        self.results = dict(
            changed=False
        )
        self.resource_group = None
        self.virtual_machine_name = None
        self.name = None
        self.tags = None
        super(AzureRMVirtualMachineExtensionInfo, self).__init__(self.module_arg_spec, supports_check_mode=True, supports_tags=False, facts_module=True)

    def exec_module(self, **kwargs):

        for key in self.module_arg_spec:
            setattr(self, key, kwargs[key])

        if self.name is not None:
            self.results['extensions'] = self.get_extensions()
        else:
            self.results['extensions'] = self.list_extensions()

        return self.results

    def get_extensions(self):
        response = None
        results = []
        try:
            response = self.compute_client.virtual_machine_extensions.get(resource_group_name=self.resource_group,
                                                                          vm_name=self.virtual_machine_name,
                                                                          vm_extension_name=self.name)
            self.log("Response : {0}".format(response))
        except ResourceNotFoundError as e:
            self.log('Could not get facts for Virtual Machine Extension.')

        if response and self.has_tags(response.tags, self.tags):
            results.append(self.format_response(response))

        return results

    def list_extensions(self):
        response = None
        results = []
        try:
            response = self.compute_client.virtual_machine_extensions.list(resource_group_name=self.resource_group,
                                                                           vm_name=self.virtual_machine_name)
            self.log("Response : {0}".format(response))
        except ResourceNotFoundError as e:
            self.log('Could not get facts for Virtual Machine Extension.')

        if response is not None and response.value is not None:
            for item in response.value:
                if self.has_tags(item.tags, self.tags):
                    results.append(self.format_response(item))

        return results

    def format_response(self, item):
        d = item.as_dict()
        d = {
            'id': d.get('id', None),
            'resource_group': self.resource_group,
            'virtual_machine_name': self.virtual_machine_name,
            'location': d.get('location'),
            'name': d.get('name'),
            'publisher': d.get('publisher'),
            'type': d.get('type_properties_type'),
            'settings': d.get('settings'),
            'auto_upgrade_minor_version': d.get('auto_upgrade_minor_version'),
            'enable_automatic_upgrade': d.get('enable_automatic_upgrade', None),
            'tags': d.get('tags', None),
            'provisioning_state': d.get('provisioning_state')
        }
        return d


def main():
    AzureRMVirtualMachineExtensionInfo()


if __name__ == '__main__':
    main()
