# -*- coding: utf-8 -*-
#
# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Accesses the google.devtools.containeranalysis.v1 ContainerAnalysis API."""

import pkg_resources
import warnings

from google.oauth2 import service_account
import google.api_core.client_options
import google.api_core.gapic_v1.client_info
import google.api_core.gapic_v1.config
import google.api_core.gapic_v1.method
import google.api_core.gapic_v1.routing_header
import google.api_core.grpc_helpers
import google.api_core.path_template
import grpc

from google.cloud.devtools.containeranalysis_v1.gapic import (
    container_analysis_client_config,
)
from google.cloud.devtools.containeranalysis_v1.gapic.transports import (
    container_analysis_grpc_transport,
)
from google.cloud.devtools.containeranalysis_v1.proto import containeranalysis_pb2_grpc
from google.iam.v1 import iam_policy_pb2
from google.iam.v1 import options_pb2
from google.iam.v1 import policy_pb2


from grafeas import grafeas_v1
from grafeas.grafeas_v1.gapic.transports import grafeas_grpc_transport

_GAPIC_LIBRARY_VERSION = pkg_resources.get_distribution(
    "google-cloud-containeranalysis"
).version


class ContainerAnalysisClient(object):
    """
    Retrieves analysis results of Cloud components such as Docker container
    images. The Container Analysis API is an implementation of the
    `Grafeas <https://grafeas.io>`__ API.

    Analysis results are stored as a series of occurrences. An
    ``Occurrence`` contains information about a specific analysis instance
    on a resource. An occurrence refers to a ``Note``. A note contains
    details describing the analysis and is generally stored in a separate
    project, called a ``Provider``. Multiple occurrences can refer to the
    same note.

    For example, an SSL vulnerability could affect multiple images. In this
    case, there would be one note for the vulnerability and an occurrence
    for each image with the vulnerability referring to that note.
    """

    SERVICE_ADDRESS = "containeranalysis.googleapis.com:443"
    """The default address of the service."""

    # The name of the interface for this client. This is the key used to
    # find the method configuration in the client_config dictionary.
    _INTERFACE_NAME = "google.devtools.containeranalysis.v1.ContainerAnalysis"

    @classmethod
    def from_service_account_file(cls, filename, *args, **kwargs):
        """Creates an instance of this client using the provided credentials
        file.

        Args:
            filename (str): The path to the service account private key json
                file.
            args: Additional arguments to pass to the constructor.
            kwargs: Additional arguments to pass to the constructor.

        Returns:
            ContainerAnalysisClient: The constructed client.
        """
        credentials = service_account.Credentials.from_service_account_file(filename)
        kwargs["credentials"] = credentials
        return cls(*args, **kwargs)

    from_service_account_json = from_service_account_file

    @classmethod
    def note_path(cls, project, note):
        """Return a fully-qualified note string."""
        return google.api_core.path_template.expand(
            "projects/{project}/notes/{note}", project=project, note=note
        )

    @classmethod
    def occurrence_path(cls, project, occurrence):
        """Return a fully-qualified occurrence string."""
        return google.api_core.path_template.expand(
            "projects/{project}/occurrences/{occurrence}",
            project=project,
            occurrence=occurrence,
        )

    def __init__(
        self,
        transport=None,
        channel=None,
        credentials=None,
        client_config=None,
        client_info=None,
        client_options=None,
    ):
        """Constructor.

        Args:
            transport (Union[~.ContainerAnalysisGrpcTransport,
                    Callable[[~.Credentials, type], ~.ContainerAnalysisGrpcTransport]): A transport
                instance, responsible for actually making the API calls.
                The default transport uses the gRPC protocol.
                This argument may also be a callable which returns a
                transport instance. Callables will be sent the credentials
                as the first argument and the default transport class as
                the second argument.
            channel (grpc.Channel): DEPRECATED. A ``Channel`` instance
                through which to make calls. This argument is mutually exclusive
                with ``credentials``; providing both will raise an exception.
            credentials (google.auth.credentials.Credentials): The
                authorization credentials to attach to requests. These
                credentials identify this application to the service. If none
                are specified, the client will attempt to ascertain the
                credentials from the environment.
                This argument is mutually exclusive with providing a
                transport instance to ``transport``; doing so will raise
                an exception.
            client_config (dict): DEPRECATED. A dictionary of call options for
                each method. If not specified, the default configuration is used.
            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
                The client info used to send a user-agent string along with
                API requests. If ``None``, then default info will be used.
                Generally, you only need to set this if you're developing
                your own client library.
            client_options (Union[dict, google.api_core.client_options.ClientOptions]):
                Client options used to set user options on the client. API Endpoint
                should be set through client_options.
        """
        # Raise deprecation warnings for things we want to go away.
        if client_config is not None:
            warnings.warn(
                "The `client_config` argument is deprecated.",
                PendingDeprecationWarning,
                stacklevel=2,
            )
        else:
            client_config = container_analysis_client_config.config

        if channel:
            warnings.warn(
                "The `channel` argument is deprecated; use " "`transport` instead.",
                PendingDeprecationWarning,
                stacklevel=2,
            )

        api_endpoint = self.SERVICE_ADDRESS
        if client_options:
            if type(client_options) == dict:
                client_options = google.api_core.client_options.from_dict(
                    client_options
                )
            if client_options.api_endpoint:
                api_endpoint = client_options.api_endpoint

        # Instantiate the transport.
        # The transport is responsible for handling serialization and
        # deserialization and actually sending data to the service.
        if transport:
            if callable(transport):
                self.transport = transport(
                    credentials=credentials,
                    default_class=container_analysis_grpc_transport.ContainerAnalysisGrpcTransport,
                    address=api_endpoint,
                )
            else:
                if credentials:
                    raise ValueError(
                        "Received both a transport instance and "
                        "credentials; these are mutually exclusive."
                    )
                self.transport = transport
        else:
            self.transport = container_analysis_grpc_transport.ContainerAnalysisGrpcTransport(
                address=api_endpoint, channel=channel, credentials=credentials
            )

        if client_info is None:
            client_info = google.api_core.gapic_v1.client_info.ClientInfo(
                gapic_version=_GAPIC_LIBRARY_VERSION
            )
        else:
            client_info.gapic_version = _GAPIC_LIBRARY_VERSION
        self._client_info = client_info

        # Parse out the default settings for retry and timeout for each RPC
        # from the client configuration.
        # (Ordinarily, these are the defaults specified in the `*_config.py`
        # file next to this one.)
        self._method_configs = google.api_core.gapic_v1.config.parse_method_configs(
            client_config["interfaces"][self._INTERFACE_NAME]
        )

        # Save a dictionary of cached API call functions.
        # These are the actual callables which invoke the proper
        # transport methods, wrapped with `wrap_method` to add retry,
        # timeout, and the like.
        self._inner_api_calls = {}

    def get_grafeas_client(self):
        """Returns an equivalent grafeas client.

        Returns:
            A :class:`~grafeas.grafeas_v1.GrafeasClient` instance.
        """
        grafeas_transport = grafeas_grpc_transport.GrafeasGrpcTransport(
            self.SERVICE_ADDRESS, self.transport._OAUTH_SCOPES
        )

        return grafeas_v1.GrafeasClient(grafeas_transport)

    # Service calls
    def set_iam_policy(
        self,
        resource,
        policy,
        retry=google.api_core.gapic_v1.method.DEFAULT,
        timeout=google.api_core.gapic_v1.method.DEFAULT,
        metadata=None,
    ):
        """
        Sets the access control policy on the specified note or occurrence.
        Requires ``containeranalysis.notes.setIamPolicy`` or
        ``containeranalysis.occurrences.setIamPolicy`` permission if the
        resource is a note or an occurrence, respectively.

        The resource takes the format ``projects/[PROJECT_ID]/notes/[NOTE_ID]``
        for notes and ``projects/[PROJECT_ID]/occurrences/[OCCURRENCE_ID]`` for
        occurrences.

        Example:
            >>> from google.cloud.devtools import containeranalysis_v1
            >>>
            >>> client = containeranalysis_v1.ContainerAnalysisClient()
            >>>
            >>> resource = client.note_path('[PROJECT]', '[NOTE]')
            >>>
            >>> # TODO: Initialize `policy`:
            >>> policy = {}
            >>>
            >>> response = client.set_iam_policy(resource, policy)

        Args:
            resource (str): REQUIRED: The resource for which the policy is being specified.
                See the operation documentation for the appropriate value for this field.
            policy (Union[dict, ~google.cloud.devtools.containeranalysis_v1.types.Policy]): REQUIRED: The complete policy to be applied to the ``resource``. The
                size of the policy is limited to a few 10s of KB. An empty policy is a
                valid policy but certain Cloud Platform services (such as Projects)
                might reject them.

                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.devtools.containeranalysis_v1.types.Policy`
            retry (Optional[google.api_core.retry.Retry]):  A retry object used
                to retry requests. If ``None`` is specified, requests will not
                be retried.
            timeout (Optional[float]): The amount of time, in seconds, to wait
                for the request to complete. Note that if ``retry`` is
                specified, the timeout applies to each individual attempt.
            metadata (Optional[Sequence[Tuple[str, str]]]): Additional metadata
                that is provided to the method.

        Returns:
            A :class:`~google.cloud.devtools.containeranalysis_v1.types.Policy` instance.

        Raises:
            google.api_core.exceptions.GoogleAPICallError: If the request
                    failed for any reason.
            google.api_core.exceptions.RetryError: If the request failed due
                    to a retryable error and retry attempts failed.
            ValueError: If the parameters are invalid.
        """
        # Wrap the transport method to add retry and timeout logic.
        if "set_iam_policy" not in self._inner_api_calls:
            self._inner_api_calls[
                "set_iam_policy"
            ] = google.api_core.gapic_v1.method.wrap_method(
                self.transport.set_iam_policy,
                default_retry=self._method_configs["SetIamPolicy"].retry,
                default_timeout=self._method_configs["SetIamPolicy"].timeout,
                client_info=self._client_info,
            )

        request = iam_policy_pb2.SetIamPolicyRequest(resource=resource, policy=policy)
        if metadata is None:
            metadata = []
        metadata = list(metadata)
        try:
            routing_header = [("resource", resource)]
        except AttributeError:
            pass
        else:
            routing_metadata = google.api_core.gapic_v1.routing_header.to_grpc_metadata(
                routing_header
            )
            metadata.append(routing_metadata)

        return self._inner_api_calls["set_iam_policy"](
            request, retry=retry, timeout=timeout, metadata=metadata
        )

    def get_iam_policy(
        self,
        resource,
        options_=None,
        retry=google.api_core.gapic_v1.method.DEFAULT,
        timeout=google.api_core.gapic_v1.method.DEFAULT,
        metadata=None,
    ):
        """
        Gets the access control policy for a note or an occurrence resource.
        Requires ``containeranalysis.notes.setIamPolicy`` or
        ``containeranalysis.occurrences.setIamPolicy`` permission if the
        resource is a note or occurrence, respectively.

        The resource takes the format ``projects/[PROJECT_ID]/notes/[NOTE_ID]``
        for notes and ``projects/[PROJECT_ID]/occurrences/[OCCURRENCE_ID]`` for
        occurrences.

        Example:
            >>> from google.cloud.devtools import containeranalysis_v1
            >>>
            >>> client = containeranalysis_v1.ContainerAnalysisClient()
            >>>
            >>> resource = client.note_path('[PROJECT]', '[NOTE]')
            >>>
            >>> response = client.get_iam_policy(resource)

        Args:
            resource (str): REQUIRED: The resource for which the policy is being requested.
                See the operation documentation for the appropriate value for this field.
            options_ (Union[dict, ~google.cloud.devtools.containeranalysis_v1.types.GetPolicyOptions]): OPTIONAL: A ``GetPolicyOptions`` object for specifying options to
                ``GetIamPolicy``. This field is only used by Cloud IAM.

                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.devtools.containeranalysis_v1.types.GetPolicyOptions`
            retry (Optional[google.api_core.retry.Retry]):  A retry object used
                to retry requests. If ``None`` is specified, requests will not
                be retried.
            timeout (Optional[float]): The amount of time, in seconds, to wait
                for the request to complete. Note that if ``retry`` is
                specified, the timeout applies to each individual attempt.
            metadata (Optional[Sequence[Tuple[str, str]]]): Additional metadata
                that is provided to the method.

        Returns:
            A :class:`~google.cloud.devtools.containeranalysis_v1.types.Policy` instance.

        Raises:
            google.api_core.exceptions.GoogleAPICallError: If the request
                    failed for any reason.
            google.api_core.exceptions.RetryError: If the request failed due
                    to a retryable error and retry attempts failed.
            ValueError: If the parameters are invalid.
        """
        # Wrap the transport method to add retry and timeout logic.
        if "get_iam_policy" not in self._inner_api_calls:
            self._inner_api_calls[
                "get_iam_policy"
            ] = google.api_core.gapic_v1.method.wrap_method(
                self.transport.get_iam_policy,
                default_retry=self._method_configs["GetIamPolicy"].retry,
                default_timeout=self._method_configs["GetIamPolicy"].timeout,
                client_info=self._client_info,
            )

        request = iam_policy_pb2.GetIamPolicyRequest(
            resource=resource, options=options_
        )
        if metadata is None:
            metadata = []
        metadata = list(metadata)
        try:
            routing_header = [("resource", resource)]
        except AttributeError:
            pass
        else:
            routing_metadata = google.api_core.gapic_v1.routing_header.to_grpc_metadata(
                routing_header
            )
            metadata.append(routing_metadata)

        return self._inner_api_calls["get_iam_policy"](
            request, retry=retry, timeout=timeout, metadata=metadata
        )

    def test_iam_permissions(
        self,
        resource,
        permissions,
        retry=google.api_core.gapic_v1.method.DEFAULT,
        timeout=google.api_core.gapic_v1.method.DEFAULT,
        metadata=None,
    ):
        """
        Returns the permissions that a caller has on the specified note or
        occurrence. Requires list permission on the project (for example,
        ``containeranalysis.notes.list``).

        The resource takes the format ``projects/[PROJECT_ID]/notes/[NOTE_ID]``
        for notes and ``projects/[PROJECT_ID]/occurrences/[OCCURRENCE_ID]`` for
        occurrences.

        Example:
            >>> from google.cloud.devtools import containeranalysis_v1
            >>>
            >>> client = containeranalysis_v1.ContainerAnalysisClient()
            >>>
            >>> resource = client.note_path('[PROJECT]', '[NOTE]')
            >>>
            >>> # TODO: Initialize `permissions`:
            >>> permissions = []
            >>>
            >>> response = client.test_iam_permissions(resource, permissions)

        Args:
            resource (str): REQUIRED: The resource for which the policy detail is being requested.
                See the operation documentation for the appropriate value for this field.
            permissions (list[str]): The set of permissions to check for the ``resource``. Permissions with
                wildcards (such as '*' or 'storage.*') are not allowed. For more
                information see `IAM
                Overview <https://cloud.google.com/iam/docs/overview#permissions>`__.
            retry (Optional[google.api_core.retry.Retry]):  A retry object used
                to retry requests. If ``None`` is specified, requests will not
                be retried.
            timeout (Optional[float]): The amount of time, in seconds, to wait
                for the request to complete. Note that if ``retry`` is
                specified, the timeout applies to each individual attempt.
            metadata (Optional[Sequence[Tuple[str, str]]]): Additional metadata
                that is provided to the method.

        Returns:
            A :class:`~google.cloud.devtools.containeranalysis_v1.types.TestIamPermissionsResponse` instance.

        Raises:
            google.api_core.exceptions.GoogleAPICallError: If the request
                    failed for any reason.
            google.api_core.exceptions.RetryError: If the request failed due
                    to a retryable error and retry attempts failed.
            ValueError: If the parameters are invalid.
        """
        # Wrap the transport method to add retry and timeout logic.
        if "test_iam_permissions" not in self._inner_api_calls:
            self._inner_api_calls[
                "test_iam_permissions"
            ] = google.api_core.gapic_v1.method.wrap_method(
                self.transport.test_iam_permissions,
                default_retry=self._method_configs["TestIamPermissions"].retry,
                default_timeout=self._method_configs["TestIamPermissions"].timeout,
                client_info=self._client_info,
            )

        request = iam_policy_pb2.TestIamPermissionsRequest(
            resource=resource, permissions=permissions
        )
        if metadata is None:
            metadata = []
        metadata = list(metadata)
        try:
            routing_header = [("resource", resource)]
        except AttributeError:
            pass
        else:
            routing_metadata = google.api_core.gapic_v1.routing_header.to_grpc_metadata(
                routing_header
            )
            metadata.append(routing_metadata)

        return self._inner_api_calls["test_iam_permissions"](
            request, retry=retry, timeout=timeout, metadata=metadata
        )
