# Copyright (c) 2021, Ansible Project
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later

from __future__ import annotations

import unittest
from contextlib import contextmanager
from io import StringIO
from itertools import count
from unittest.mock import patch

from ansible_collections.community.general.plugins.modules import keycloak_realm_key
from ansible_collections.community.internal_test_tools.tests.unit.plugins.modules.utils import (
    AnsibleExitJson,
    ModuleTestCase,
    set_module_args,
)

from ansible_collections.community.general.plugins.modules import keycloak_component


@contextmanager
def patch_keycloak_api(get_components=None, create_component=None, update_component=None, delete_component=None):
    """Mock context manager for patching the methods in KeycloakAPI"""

    obj = keycloak_realm_key.KeycloakAPI
    with patch.object(obj, "get_components", side_effect=get_components) as mock_get_components:
        with patch.object(obj, "create_component", side_effect=create_component) as mock_create_component:
            with patch.object(obj, "update_component", side_effect=update_component) as mock_update_component:
                with patch.object(obj, "delete_component", side_effect=delete_component) as mock_delete_component:
                    yield mock_get_components, mock_create_component, mock_update_component, mock_delete_component


def get_response(object_with_future_response, method, get_id_call_count):
    if callable(object_with_future_response):
        return object_with_future_response()
    if isinstance(object_with_future_response, dict):
        return get_response(object_with_future_response[method], method, get_id_call_count)
    if isinstance(object_with_future_response, list):
        call_number = next(get_id_call_count)
        return get_response(object_with_future_response[call_number], method, get_id_call_count)
    return object_with_future_response


def build_mocked_request(get_id_user_count, response_dict):
    def _mocked_requests(*args, **kwargs):
        url = args[0]
        method = kwargs["method"]
        future_response = response_dict.get(url, None)
        return get_response(future_response, method, get_id_user_count)

    return _mocked_requests


def create_wrapper(text_as_string):
    """Allow to mock many times a call to one address.
    Without this function, the StringIO is empty for the second call.
    """

    def _create_wrapper():
        return StringIO(text_as_string)

    return _create_wrapper


def mock_good_connection():
    token_response = {
        "http://keycloak.url/auth/realms/master/protocol/openid-connect/token": create_wrapper(
            '{"access_token": "alongtoken"}'
        ),
    }
    return patch(
        "ansible_collections.community.general.plugins.module_utils.identity.keycloak.keycloak.open_url",
        side_effect=build_mocked_request(count(), token_response),
        autospec=True,
    )


class TestKeycloakComponent(ModuleTestCase):
    def setUp(self):
        super().setUp()
        self.module = keycloak_component

    def test_create_when_absent(self):
        """Add a new realm key"""

        module_args = {
            "auth_keycloak_url": "http://keycloak.url/auth",
            "auth_realm": "master",
            "auth_username": "admin",
            "auth_password": "admin",
            "parent_id": "realm-name",
            "name": "test-user-provider",
            "state": "present",
            "provider_id": "my-provider",
            "provider_type": "org.keycloak.storage.UserStorageProvider",
            "config": {
                "enabled": True,
                "my_custom_config": "foo",
            },
        }
        return_value_component_create = [
            {
                "id": "ebb7d999-60cc-4dfe-ab79-48f7bbd9d4d9",
                "name": "test-user-provider",
                "providerId": "my-provider",
                "parentId": "90c8fef9-15f8-4d5b-8b22-44e2e1cdcd09",
                "config": {
                    "myCustomConfig": [
                        "foo",
                    ],
                    "enabled": ["true"],
                },
            }
        ]
        # get before_comp, get default_mapper, get after_mapper
        return_value_components_get = [[], [], []]
        changed = True

        # Run the module

        with set_module_args(module_args):
            with mock_good_connection():
                with patch_keycloak_api(
                    get_components=return_value_components_get, create_component=return_value_component_create
                ) as (mock_get_components, mock_create_component, mock_update_component, mock_delete_component):
                    with self.assertRaises(AnsibleExitJson) as exec_info:
                        self.module.main()

        self.assertEqual(len(mock_get_components.mock_calls), 1)
        self.assertEqual(len(mock_create_component.mock_calls), 1)
        self.assertEqual(len(mock_update_component.mock_calls), 0)
        self.assertEqual(len(mock_delete_component.mock_calls), 0)

        # must not contain parent_id
        mock_create_component.assert_called_once_with(
            {
                "name": "test-user-provider",
                "providerId": "my-provider",
                "providerType": "org.keycloak.storage.UserStorageProvider",
                "config": {
                    "enabled": ["true"],
                    "myCustomConfig": ["foo"],
                },
            },
            "realm-name",
        )

        # Verify that the module's changed status matches what is expected
        self.assertIs(exec_info.exception.args[0]["changed"], changed)

    def test_create_when_present(self):
        """Update existing realm key"""

        module_args = {
            "auth_keycloak_url": "http://keycloak.url/auth",
            "auth_realm": "master",
            "auth_username": "admin",
            "auth_password": "admin",
            "parent_id": "realm-name",
            "name": "test-user-provider",
            "state": "present",
            "provider_id": "my-provider",
            "provider_type": "org.keycloak.storage.UserStorageProvider",
            "config": {
                "enabled": True,
                "my_custom_config": "foo",
            },
        }
        return_value_components_get = [
            [
                {
                    "id": "c1a957aa-3df0-4f70-9418-44202bf4ae1f",
                    "name": "test-user-provider",
                    "providerId": "rsa",
                    "providerType": "org.keycloak.storage.UserStorageProvider",
                    "parentId": "90c8fef9-15f8-4d5b-8b22-44e2e1cdcd09",
                    "config": {
                        "myCustomConfig": [
                            "foo",
                        ],
                        "enabled": ["true"],
                    },
                },
            ],
            [],
            [],
        ]
        return_value_component_update = [None]
        changed = True

        # Run the module

        with set_module_args(module_args):
            with mock_good_connection():
                with patch_keycloak_api(
                    get_components=return_value_components_get, update_component=return_value_component_update
                ) as (mock_get_components, mock_create_component, mock_update_component, mock_delete_component):
                    with self.assertRaises(AnsibleExitJson) as exec_info:
                        self.module.main()

        self.assertEqual(len(mock_get_components.mock_calls), 1)
        self.assertEqual(len(mock_create_component.mock_calls), 0)
        self.assertEqual(len(mock_update_component.mock_calls), 1)
        self.assertEqual(len(mock_delete_component.mock_calls), 0)

        # Verify that the module's changed status matches what is expected
        self.assertIs(exec_info.exception.args[0]["changed"], changed)

    def test_delete_when_absent(self):
        """Remove an absent realm key"""

        module_args = {
            "auth_keycloak_url": "http://keycloak.url/auth",
            "auth_realm": "master",
            "auth_username": "admin",
            "auth_password": "admin",
            "parent_id": "realm-name",
            "name": "test-user-provider",
            "state": "absent",
            "provider_id": "my-provider",
            "provider_type": "org.keycloak.storage.UserStorageProvider",
            "config": {
                "enabled": True,
                "my_custom_config": "foo",
            },
        }
        return_value_components_get = [[]]
        changed = False

        # Run the module

        with set_module_args(module_args):
            with mock_good_connection():
                with patch_keycloak_api(get_components=return_value_components_get) as (
                    mock_get_components,
                    mock_create_component,
                    mock_update_component,
                    mock_delete_component,
                ):
                    with self.assertRaises(AnsibleExitJson) as exec_info:
                        self.module.main()

        self.assertEqual(len(mock_get_components.mock_calls), 1)
        self.assertEqual(len(mock_create_component.mock_calls), 0)
        self.assertEqual(len(mock_update_component.mock_calls), 0)
        self.assertEqual(len(mock_delete_component.mock_calls), 0)

        # Verify that the module's changed status matches what is expected
        self.assertIs(exec_info.exception.args[0]["changed"], changed)

    def test_delete_when_present(self):
        """Remove an existing realm key"""

        module_args = {
            "auth_keycloak_url": "http://keycloak.url/auth",
            "auth_realm": "master",
            "auth_username": "admin",
            "auth_password": "admin",
            "parent_id": "realm-name",
            "name": "test-user-provider",
            "state": "absent",
            "provider_id": "my-provider",
            "provider_type": "org.keycloak.storage.UserStorageProvider",
            "config": {
                "enabled": True,
                "my_custom_config": "foo",
            },
        }

        return_value_components_get = [
            [
                {
                    "id": "c1a957aa-3df0-4f70-9418-44202bf4ae1f",
                    "name": "test-user-provider",
                    "providerId": "my-provider",
                    "providerType": "org.keycloak.storage.UserStorageProvider",
                    "parentId": "90c8fef9-15f8-4d5b-8b22-44e2e1cdcd09",
                    "config": {
                        "myCustomConfig": [
                            "foo",
                        ],
                        "enabled": ["true"],
                    },
                },
            ],
            [],
            [],
        ]
        return_value_component_delete = [None]
        changed = True

        # Run the module

        with set_module_args(module_args):
            with mock_good_connection():
                with patch_keycloak_api(
                    get_components=return_value_components_get, delete_component=return_value_component_delete
                ) as (mock_get_components, mock_create_component, mock_update_component, mock_delete_component):
                    with self.assertRaises(AnsibleExitJson) as exec_info:
                        self.module.main()

        self.assertEqual(len(mock_get_components.mock_calls), 1)
        self.assertEqual(len(mock_create_component.mock_calls), 0)
        self.assertEqual(len(mock_update_component.mock_calls), 0)
        self.assertEqual(len(mock_delete_component.mock_calls), 1)

        # Verify that the module's changed status matches what is expected
        self.assertIs(exec_info.exception.args[0]["changed"], changed)


if __name__ == "__main__":
    unittest.main()