# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
# pylint: disable=docstring-keyword-should-match-keyword-only

from typing import (
    Any, Callable, Optional, Union,
    TYPE_CHECKING
)
from urllib.parse import parse_qs

from ._shared import sign_string, url_quote
from ._shared.constants import X_MS_VERSION
from ._shared.models import Services, UserDelegationKey
from ._shared.shared_access_signature import QueryStringConstants, SharedAccessSignature, _SharedAccessHelper

if TYPE_CHECKING:
    from datetime import datetime
    from ..blob import AccountSasPermissions, BlobSasPermissions, ContainerSasPermissions, ResourceTypes


class BlobQueryStringConstants(object):
    SIGNED_TIMESTAMP = 'snapshot'


class BlobSharedAccessSignature(SharedAccessSignature):
    '''
    Provides a factory for creating blob and container access
    signature tokens with a common account name and account key.  Users can either
    use the factory or can construct the appropriate service and use the
    generate_*_shared_access_signature method directly.
    '''

    def __init__(
        self, account_name: str,
        account_key: Optional[str] = None,
        user_delegation_key: Optional[UserDelegationKey] = None
    ) -> None:
        '''
        :param str account_name:
            The storage account name used to generate the shared access signatures.
        :param Optional[str] account_key:
            The access key to generate the shares access signatures.
        :param Optional[~azure.storage.blob.models.UserDelegationKey] user_delegation_key:
            Instead of an account key, the user could pass in a user delegation key.
            A user delegation key can be obtained from the service by authenticating with an AAD identity;
            this can be accomplished by calling get_user_delegation_key on any Blob service object.
        '''
        super(BlobSharedAccessSignature, self).__init__(account_name, account_key, x_ms_version=X_MS_VERSION)
        self.user_delegation_key = user_delegation_key

    def generate_blob(
        self, container_name: str,
        blob_name: str,
        snapshot: Optional[str] = None,
        version_id: Optional[str] = None,
        permission: Optional[Union["BlobSasPermissions", str]] = None,
        expiry: Optional[Union["datetime", str]] = None,
        start: Optional[Union["datetime", str]] = None,
        policy_id: Optional[str] = None,
        ip: Optional[str] = None,
        protocol: Optional[str] = None,
        cache_control: Optional[str] = None,
        content_disposition: Optional[str] = None,
        content_encoding: Optional[str] = None,
        content_language: Optional[str] = None,
        content_type: Optional[str] = None,
        sts_hook: Optional[Callable[[str], None]] = None,
        **kwargs: Any
    ) -> str:
        '''
        Generates a shared access signature for the blob or one of its snapshots.
        Use the returned signature with the sas_token parameter of any BlobService.

        :param str container_name:
            Name of container.
        :param str blob_name:
            Name of blob.
        :param str snapshot:
            The snapshot parameter is an opaque datetime value that,
            when present, specifies the blob snapshot to grant permission.
        :param str version_id:
            An optional blob version ID. This parameter is only applicable for versioning-enabled
            Storage accounts. Note that the 'versionid' query parameter is not included in the output
            SAS. Therefore, please provide the 'version_id' parameter to any APIs when using the output
            SAS to operate on a specific version.
        :param permission:
            The permissions associated with the shared access signature. The
            user is restricted to operations allowed by the permissions.
            Permissions must be ordered racwdxytmei.
            Required unless an id is given referencing a stored access policy
            which contains this field. This field must be omitted if it has been
            specified in an associated stored access policy.
        :type permission: str or BlobSasPermissions
        :param expiry:
            The time at which the shared access signature becomes invalid.
            Required unless an id is given referencing a stored access policy
            which contains this field. This field must be omitted if it has
            been specified in an associated stored access policy. Azure will always
            convert values to UTC. If a date is passed in without timezone info, it
            is assumed to be UTC.
        :type expiry: datetime or str
        :param start:
            The time at which the shared access signature becomes valid. If
            omitted, start time for this call is assumed to be the time when the
            storage service receives the request. The provided datetime will always
            be interpreted as UTC.
        :type start: datetime or str
        :param str policy_id:
            A unique value up to 64 characters in length that correlates to a
            stored access policy. To create a stored access policy, use
            set_blob_service_properties.
        :param str ip:
            Specifies an IP address or a range of IP addresses from which to accept requests.
            If the IP address from which the request originates does not match the IP address
            or address range specified on the SAS token, the request is not authenticated.
            For example, specifying sip=168.1.5.65 or sip=168.1.5.60-168.1.5.70 on the SAS
            restricts the request to those IP addresses.
        :param str protocol:
            Specifies the protocol permitted for a request made. The default value
            is https,http. See :class:`~azure.storage.common.models.Protocol` for possible values.
        :param str cache_control:
            Response header value for Cache-Control when resource is accessed
            using this shared access signature.
        :param str content_disposition:
            Response header value for Content-Disposition when resource is accessed
            using this shared access signature.
        :param str content_encoding:
            Response header value for Content-Encoding when resource is accessed
            using this shared access signature.
        :param str content_language:
            Response header value for Content-Language when resource is accessed
            using this shared access signature.
        :param str content_type:
            Response header value for Content-Type when resource is accessed
            using this shared access signature.
        :param sts_hook:
            For debugging purposes only. If provided, the hook is called with the string to sign
            that was used to generate the SAS.
        :type sts_hook: Optional[Callable[[str], None]]
        :return: A Shared Access Signature (sas) token.
        :rtype: str
        '''
        resource_path = container_name + '/' + blob_name

        sas = _BlobSharedAccessHelper()
        sas.add_base(permission, expiry, start, ip, protocol, self.x_ms_version)
        sas.add_id(policy_id)

        resource = 'bs' if snapshot else 'b'
        resource = 'bv' if version_id else resource
        resource = 'd' if kwargs.pop("is_directory", None) else resource
        sas.add_resource(resource)

        sas.add_timestamp(snapshot or version_id)
        sas.add_override_response_headers(cache_control, content_disposition,
                                          content_encoding, content_language,
                                          content_type)
        sas.add_encryption_scope(**kwargs)
        sas.add_info_for_hns_account(**kwargs)
        sas.add_resource_signature(self.account_name, self.account_key, resource_path,
                                   user_delegation_key=self.user_delegation_key)

        if sts_hook is not None:
            sts_hook(sas.string_to_sign)

        return sas.get_token()

    def generate_container(
        self, container_name: str,
        permission: Optional[Union["ContainerSasPermissions", str]] = None,
        expiry: Optional[Union["datetime", str]] = None,
        start: Optional[Union["datetime", str]] = None,
        policy_id: Optional[str] = None,
        ip: Optional[str] = None,
        protocol: Optional[str] = None,
        cache_control: Optional[str] = None,
        content_disposition: Optional[str] = None,
        content_encoding: Optional[str] = None,
        content_language: Optional[str] = None,
        content_type: Optional[str] = None,
        sts_hook: Optional[Callable[[str], None]] = None,
        **kwargs: Any
    ) -> str:
        '''
        Generates a shared access signature for the container.
        Use the returned signature with the sas_token parameter of any BlobService.

        :param str container_name:
            Name of container.
        :param permission:
            The permissions associated with the shared access signature. The
            user is restricted to operations allowed by the permissions.
            Permissions must be ordered racwdxyltfmei.
            Required unless an id is given referencing a stored access policy
            which contains this field. This field must be omitted if it has been
            specified in an associated stored access policy.
        :type permission: str or ContainerSasPermissions
        :param expiry:
            The time at which the shared access signature becomes invalid.
            Required unless an id is given referencing a stored access policy
            which contains this field. This field must be omitted if it has
            been specified in an associated stored access policy. Azure will always
            convert values to UTC. If a date is passed in without timezone info, it
            is assumed to be UTC.
        :type expiry: datetime or str
        :param start:
            The time at which the shared access signature becomes valid. If
            omitted, start time for this call is assumed to be the time when the
            storage service receives the request. The provided datetime will always
            be interpreted as UTC.
        :type start: datetime or str
        :param str policy_id:
            A unique value up to 64 characters in length that correlates to a
            stored access policy. To create a stored access policy, use
            set_blob_service_properties.
        :param str ip:
            Specifies an IP address or a range of IP addresses from which to accept requests.
            If the IP address from which the request originates does not match the IP address
            or address range specified on the SAS token, the request is not authenticated.
            For example, specifying sip=168.1.5.65 or sip=168.1.5.60-168.1.5.70 on the SAS
            restricts the request to those IP addresses.
        :param str protocol:
            Specifies the protocol permitted for a request made. The default value
            is https,http. See :class:`~azure.storage.common.models.Protocol` for possible values.
        :param str cache_control:
            Response header value for Cache-Control when resource is accessed
            using this shared access signature.
        :param str content_disposition:
            Response header value for Content-Disposition when resource is accessed
            using this shared access signature.
        :param str content_encoding:
            Response header value for Content-Encoding when resource is accessed
            using this shared access signature.
        :param str content_language:
            Response header value for Content-Language when resource is accessed
            using this shared access signature.
        :param str content_type:
            Response header value for Content-Type when resource is accessed
            using this shared access signature.
        :param sts_hook:
            For debugging purposes only. If provided, the hook is called with the string to sign
            that was used to generate the SAS.
        :type sts_hook: Optional[Callable[[str], None]]
        :return: A Shared Access Signature (sas) token.
        :rtype: str
        '''
        sas = _BlobSharedAccessHelper()
        sas.add_base(permission, expiry, start, ip, protocol, self.x_ms_version)
        sas.add_id(policy_id)
        sas.add_resource('c')
        sas.add_override_response_headers(cache_control, content_disposition,
                                          content_encoding, content_language,
                                          content_type)
        sas.add_encryption_scope(**kwargs)
        sas.add_info_for_hns_account(**kwargs)
        sas.add_resource_signature(self.account_name, self.account_key, container_name,
                                   user_delegation_key=self.user_delegation_key)

        if sts_hook is not None:
            sts_hook(sas.string_to_sign)

        return sas.get_token()


class _BlobSharedAccessHelper(_SharedAccessHelper):

    def add_timestamp(self, timestamp):
        self._add_query(BlobQueryStringConstants.SIGNED_TIMESTAMP, timestamp)

    def add_info_for_hns_account(self, **kwargs):
        self._add_query(QueryStringConstants.SIGNED_DIRECTORY_DEPTH, kwargs.pop('sdd', None))
        self._add_query(QueryStringConstants.SIGNED_AUTHORIZED_OID, kwargs.pop('preauthorized_agent_object_id', None))
        self._add_query(QueryStringConstants.SIGNED_UNAUTHORIZED_OID, kwargs.pop('agent_object_id', None))
        self._add_query(QueryStringConstants.SIGNED_CORRELATION_ID, kwargs.pop('correlation_id', None))

    def get_value_to_append(self, query):
        return_value = self.query_dict.get(query) or ''
        return return_value + '\n'

    def add_resource_signature(self, account_name, account_key, path, user_delegation_key=None):
        if path[0] != '/':
            path = '/' + path

        canonicalized_resource = '/blob/' + account_name + path + '\n'

        # Form the string to sign from shared_access_policy and canonicalized
        # resource. The order of values is important.
        string_to_sign = \
            (self.get_value_to_append(QueryStringConstants.SIGNED_PERMISSION) +
             self.get_value_to_append(QueryStringConstants.SIGNED_START) +
             self.get_value_to_append(QueryStringConstants.SIGNED_EXPIRY) +
             canonicalized_resource)

        if user_delegation_key is not None:
            self._add_query(QueryStringConstants.SIGNED_OID, user_delegation_key.signed_oid)
            self._add_query(QueryStringConstants.SIGNED_TID, user_delegation_key.signed_tid)
            self._add_query(QueryStringConstants.SIGNED_KEY_START, user_delegation_key.signed_start)
            self._add_query(QueryStringConstants.SIGNED_KEY_EXPIRY, user_delegation_key.signed_expiry)
            self._add_query(QueryStringConstants.SIGNED_KEY_SERVICE, user_delegation_key.signed_service)
            self._add_query(QueryStringConstants.SIGNED_KEY_VERSION, user_delegation_key.signed_version)

            string_to_sign += \
                (self.get_value_to_append(QueryStringConstants.SIGNED_OID) +
                 self.get_value_to_append(QueryStringConstants.SIGNED_TID) +
                 self.get_value_to_append(QueryStringConstants.SIGNED_KEY_START) +
                 self.get_value_to_append(QueryStringConstants.SIGNED_KEY_EXPIRY) +
                 self.get_value_to_append(QueryStringConstants.SIGNED_KEY_SERVICE) +
                 self.get_value_to_append(QueryStringConstants.SIGNED_KEY_VERSION) +
                 self.get_value_to_append(QueryStringConstants.SIGNED_AUTHORIZED_OID) +
                 self.get_value_to_append(QueryStringConstants.SIGNED_UNAUTHORIZED_OID) +
                 self.get_value_to_append(QueryStringConstants.SIGNED_CORRELATION_ID))
        else:
            string_to_sign += self.get_value_to_append(QueryStringConstants.SIGNED_IDENTIFIER)

        string_to_sign += \
            (self.get_value_to_append(QueryStringConstants.SIGNED_IP) +
             self.get_value_to_append(QueryStringConstants.SIGNED_PROTOCOL) +
             self.get_value_to_append(QueryStringConstants.SIGNED_VERSION) +
             self.get_value_to_append(QueryStringConstants.SIGNED_RESOURCE) +
             self.get_value_to_append(BlobQueryStringConstants.SIGNED_TIMESTAMP) +
             self.get_value_to_append(QueryStringConstants.SIGNED_ENCRYPTION_SCOPE) +
             self.get_value_to_append(QueryStringConstants.SIGNED_CACHE_CONTROL) +
             self.get_value_to_append(QueryStringConstants.SIGNED_CONTENT_DISPOSITION) +
             self.get_value_to_append(QueryStringConstants.SIGNED_CONTENT_ENCODING) +
             self.get_value_to_append(QueryStringConstants.SIGNED_CONTENT_LANGUAGE) +
             self.get_value_to_append(QueryStringConstants.SIGNED_CONTENT_TYPE))

        # remove the trailing newline
        if string_to_sign[-1] == '\n':
            string_to_sign = string_to_sign[:-1]

        self._add_query(QueryStringConstants.SIGNED_SIGNATURE,
                        sign_string(account_key if user_delegation_key is None else user_delegation_key.value,
                                    string_to_sign))
        self.string_to_sign = string_to_sign

    def get_token(self) -> str:
        # a conscious decision was made to exclude the timestamp in the generated token
        # this is to avoid having two snapshot ids in the query parameters when the user appends the snapshot timestamp
        exclude = [BlobQueryStringConstants.SIGNED_TIMESTAMP]
        return '&'.join([f'{n}={url_quote(v)}'
                         for n, v in self.query_dict.items() if v is not None and n not in exclude])


def generate_account_sas(
    account_name: str,
    account_key: str,
    resource_types: Union["ResourceTypes", str],
    permission: Union["AccountSasPermissions", str],
    expiry: Union["datetime", str],
    start: Optional[Union["datetime", str]] = None,
    ip: Optional[str] = None,
    *,
    services: Union[Services, str] = Services(blob=True),
    sts_hook: Optional[Callable[[str], None]] = None,
    **kwargs: Any
) -> str:
    """Generates a shared access signature for the blob service.

    Use the returned signature with the credential parameter of any BlobServiceClient,
    ContainerClient or BlobClient.

    :param str account_name:
        The storage account name used to generate the shared access signature.
    :param str account_key:
        The account key, also called shared key or access key, to generate the shared access signature.
    :param resource_types:
        Specifies the resource types that are accessible with the account SAS.
    :type resource_types: str or ~azure.storage.blob.ResourceTypes
    :param permission:
        The permissions associated with the shared access signature. The
        user is restricted to operations allowed by the permissions.
    :type permission: str or ~azure.storage.blob.AccountSasPermissions
    :param expiry:
        The time at which the shared access signature becomes invalid.
        The provided datetime will always be interpreted as UTC.
    :type expiry: ~datetime.datetime or str
    :param start:
        The time at which the shared access signature becomes valid. If
        omitted, start time for this call is assumed to be the time when the
        storage service receives the request. The provided datetime will always
        be interpreted as UTC.
    :type start: ~datetime.datetime or str
    :param str ip:
        Specifies an IP address or a range of IP addresses from which to accept requests.
        If the IP address from which the request originates does not match the IP address
        or address range specified on the SAS token, the request is not authenticated.
        For example, specifying ip=168.1.5.65 or ip=168.1.5.60-168.1.5.70 on the SAS
        restricts the request to those IP addresses.
    :keyword Union[Services, str] services:
        Specifies the services that the Shared Access Signature (sas) token will be able to be utilized with.
        Will default to only this package (i.e. blobs) if not provided.
    :keyword str protocol:
        Specifies the protocol permitted for a request made. The default value is https.
    :keyword str encryption_scope:
        Specifies the encryption scope for a request made so that all write operations will be service encrypted.
    :keyword sts_hook:
        For debugging purposes only. If provided, the hook is called with the string to sign
        that was used to generate the SAS.
    :paramtype sts_hook: Optional[Callable[[str], None]]
    :return: A Shared Access Signature (sas) token.
    :rtype: str

    .. admonition:: Example:

        .. literalinclude:: ../samples/blob_samples_authentication.py
            :start-after: [START create_sas_token]
            :end-before: [END create_sas_token]
            :language: python
            :dedent: 8
            :caption: Generating a shared access signature.
    """
    sas = SharedAccessSignature(account_name, account_key)
    return sas.generate_account(
        services=services,
        resource_types=resource_types,
        permission=permission,
        expiry=expiry,
        start=start,
        ip=ip,
        sts_hook=sts_hook,
        **kwargs
    )


def generate_container_sas(
    account_name: str,
    container_name: str,
    account_key: Optional[str] = None,
    user_delegation_key: Optional[UserDelegationKey] = None,
    permission: Optional[Union["ContainerSasPermissions", str]] = None,
    expiry: Optional[Union["datetime", str]] = None,
    start: Optional[Union["datetime", str]] = None,
    policy_id: Optional[str] = None,
    ip: Optional[str] = None,
    *,
    sts_hook: Optional[Callable[[str], None]] = None,
    **kwargs: Any
) -> str:
    """Generates a shared access signature for a container.

    Use the returned signature with the credential parameter of any BlobServiceClient,
    ContainerClient or BlobClient.

    :param str account_name:
        The storage account name used to generate the shared access signature.
    :param str container_name:
        The name of the container.
    :param str account_key:
        The account key, also called shared key or access key, to generate the shared access signature.
        Either `account_key` or `user_delegation_key` must be specified.
    :param ~azure.storage.blob.UserDelegationKey user_delegation_key:
        Instead of an account shared key, the user could pass in a user delegation key.
        A user delegation key can be obtained from the service by authenticating with an AAD identity;
        this can be accomplished by calling :func:`~azure.storage.blob.BlobServiceClient.get_user_delegation_key`.
        When present, the SAS is signed with the user delegation key instead.
    :param permission:
        The permissions associated with the shared access signature. The
        user is restricted to operations allowed by the permissions.
        Permissions must be ordered racwdxyltfmei.
        Required unless an id is given referencing a stored access policy
        which contains this field. This field must be omitted if it has been
        specified in an associated stored access policy.
    :type permission: str or ~azure.storage.blob.ContainerSasPermissions
    :param expiry:
        The time at which the shared access signature becomes invalid.
        Required unless an id is given referencing a stored access policy
        which contains this field. This field must be omitted if it has
        been specified in an associated stored access policy. Azure will always
        convert values to UTC. If a date is passed in without timezone info, it
        is assumed to be UTC.
    :type expiry: ~datetime.datetime or str
    :param start:
        The time at which the shared access signature becomes valid. If
        omitted, start time for this call is assumed to be the time when the
        storage service receives the request. The provided datetime will always
        be interpreted as UTC.
    :type start: ~datetime.datetime or str
    :param str policy_id:
        A unique value up to 64 characters in length that correlates to a
        stored access policy. To create a stored access policy, use
        :func:`~azure.storage.blob.ContainerClient.set_container_access_policy`.
    :param str ip:
        Specifies an IP address or a range of IP addresses from which to accept requests.
        If the IP address from which the request originates does not match the IP address
        or address range specified on the SAS token, the request is not authenticated.
        For example, specifying ip=168.1.5.65 or ip=168.1.5.60-168.1.5.70 on the SAS
        restricts the request to those IP addresses.
    :keyword str protocol:
        Specifies the protocol permitted for a request made. The default value is https.
    :keyword str cache_control:
        Response header value for Cache-Control when resource is accessed
        using this shared access signature.
    :keyword str content_disposition:
        Response header value for Content-Disposition when resource is accessed
        using this shared access signature.
    :keyword str content_encoding:
        Response header value for Content-Encoding when resource is accessed
        using this shared access signature.
    :keyword str content_language:
        Response header value for Content-Language when resource is accessed
        using this shared access signature.
    :keyword str content_type:
        Response header value for Content-Type when resource is accessed
        using this shared access signature.
    :keyword str encryption_scope:
        Specifies the encryption scope for a request made so that all write operations will be service encrypted.
    :keyword str correlation_id:
        The correlation id to correlate the storage audit logs with the audit logs used by the principal
        generating and distributing the SAS. This can only be used when generating a SAS with delegation key.
    :keyword sts_hook:
        For debugging purposes only. If provided, the hook is called with the string to sign
        that was used to generate the SAS.
    :paramtype sts_hook: Optional[Callable[[str], None]]
    :return: A Shared Access Signature (sas) token.
    :rtype: str

    .. admonition:: Example:

        .. literalinclude:: ../samples/blob_samples_containers.py
            :start-after: [START generate_sas_token]
            :end-before: [END generate_sas_token]
            :language: python
            :dedent: 12
            :caption: Generating a sas token.
    """
    if not policy_id:
        if not expiry:
            raise ValueError("'expiry' parameter must be provided when not using a stored access policy.")
        if not permission:
            raise ValueError("'permission' parameter must be provided when not using a stored access policy.")
    if not user_delegation_key and not account_key:
        raise ValueError("Either user_delegation_key or account_key must be provided.")
    if isinstance(account_key, UserDelegationKey):
        user_delegation_key = account_key
    if user_delegation_key:
        sas = BlobSharedAccessSignature(account_name, user_delegation_key=user_delegation_key)
    else:
        sas = BlobSharedAccessSignature(account_name, account_key=account_key)
    return sas.generate_container(
        container_name,
        permission=permission,
        expiry=expiry,
        start=start,
        policy_id=policy_id,
        ip=ip,
        sts_hook=sts_hook,
        **kwargs
    )


def generate_blob_sas(
    account_name: str,
    container_name: str,
    blob_name: str,
    snapshot: Optional[str] = None,
    account_key: Optional[str] = None,
    user_delegation_key: Optional[UserDelegationKey] = None,
    permission: Optional[Union["BlobSasPermissions", str]] = None,
    expiry: Optional[Union["datetime", str]] = None,
    start: Optional[Union["datetime", str]] = None,
    policy_id: Optional[str] = None,
    ip: Optional[str] = None,
    *,
    sts_hook: Optional[Callable[[str], None]] = None,
    **kwargs: Any
) -> str:
    """Generates a shared access signature for a blob.

    Use the returned signature with the credential parameter of any BlobServiceClient,
    ContainerClient or BlobClient.

    :param str account_name:
        The storage account name used to generate the shared access signature.
    :param str container_name:
        The name of the container.
    :param str blob_name:
        The name of the blob.
    :param str snapshot:
        An optional blob snapshot ID.
    :param str account_key:
        The account key, also called shared key or access key, to generate the shared access signature.
        Either `account_key` or `user_delegation_key` must be specified.
    :param ~azure.storage.blob.UserDelegationKey user_delegation_key:
        Instead of an account shared key, the user could pass in a user delegation key.
        A user delegation key can be obtained from the service by authenticating with an AAD identity;
        this can be accomplished by calling :func:`~azure.storage.blob.BlobServiceClient.get_user_delegation_key`.
        When present, the SAS is signed with the user delegation key instead.
    :param permission:
        The permissions associated with the shared access signature. The
        user is restricted to operations allowed by the permissions.
        Permissions must be ordered racwdxytmei.
        Required unless an id is given referencing a stored access policy
        which contains this field. This field must be omitted if it has been
        specified in an associated stored access policy.
    :type permission: str or ~azure.storage.blob.BlobSasPermissions
    :param expiry:
        The time at which the shared access signature becomes invalid.
        Required unless an id is given referencing a stored access policy
        which contains this field. This field must be omitted if it has
        been specified in an associated stored access policy. Azure will always
        convert values to UTC. If a date is passed in without timezone info, it
        is assumed to be UTC.
    :type expiry: ~datetime.datetime or str
    :param start:
        The time at which the shared access signature becomes valid. If
        omitted, start time for this call is assumed to be the time when the
        storage service receives the request. The provided datetime will always
        be interpreted as UTC.
    :type start: ~datetime.datetime or str
    :param str policy_id:
        A unique value up to 64 characters in length that correlates to a
        stored access policy. To create a stored access policy, use
        :func:`~azure.storage.blob.ContainerClient.set_container_access_policy()`.
    :param str ip:
        Specifies an IP address or a range of IP addresses from which to accept requests.
        If the IP address from which the request originates does not match the IP address
        or address range specified on the SAS token, the request is not authenticated.
        For example, specifying ip=168.1.5.65 or ip=168.1.5.60-168.1.5.70 on the SAS
        restricts the request to those IP addresses.
    :keyword str version_id:
        An optional blob version ID. This parameter is only applicable for versioning-enabled
        Storage accounts. Note that the 'versionid' query parameter is not included in the output
        SAS. Therefore, please provide the 'version_id' parameter to any APIs when using the output
        SAS to operate on a specific version.

        .. versionadded:: 12.4.0
            This keyword argument was introduced in API version '2019-12-12'.
    :keyword str protocol:
        Specifies the protocol permitted for a request made. The default value is https.
    :keyword str cache_control:
        Response header value for Cache-Control when resource is accessed
        using this shared access signature.
    :keyword str content_disposition:
        Response header value for Content-Disposition when resource is accessed
        using this shared access signature.
    :keyword str content_encoding:
        Response header value for Content-Encoding when resource is accessed
        using this shared access signature.
    :keyword str content_language:
        Response header value for Content-Language when resource is accessed
        using this shared access signature.
    :keyword str content_type:
        Response header value for Content-Type when resource is accessed
        using this shared access signature.
    :keyword str encryption_scope:
        Specifies the encryption scope for a request made so that all write operations will be service encrypted.
    :keyword str correlation_id:
        The correlation id to correlate the storage audit logs with the audit logs used by the principal
        generating and distributing the SAS. This can only be used when generating a SAS with delegation key.
    :keyword sts_hook:
        For debugging purposes only. If provided, the hook is called with the string to sign
        that was used to generate the SAS.
    :paramtype sts_hook: Optional[Callable[[str], None]]
    :return: A Shared Access Signature (sas) token.
    :rtype: str
    """
    if not policy_id:
        if not expiry:
            raise ValueError("'expiry' parameter must be provided when not using a stored access policy.")
        if not permission:
            raise ValueError("'permission' parameter must be provided when not using a stored access policy.")
    if not user_delegation_key and not account_key:
        raise ValueError("Either user_delegation_key or account_key must be provided.")
    if isinstance(account_key, UserDelegationKey):
        user_delegation_key = account_key
    version_id = kwargs.pop('version_id', None)
    if version_id and snapshot:
        raise ValueError("snapshot and version_id cannot be set at the same time.")
    if user_delegation_key:
        sas = BlobSharedAccessSignature(account_name, user_delegation_key=user_delegation_key)
    else:
        sas = BlobSharedAccessSignature(account_name, account_key=account_key)
    return sas.generate_blob(
        container_name,
        blob_name,
        snapshot=snapshot,
        version_id=version_id,
        permission=permission,
        expiry=expiry,
        start=start,
        policy_id=policy_id,
        ip=ip,
        sts_hook=sts_hook,
        **kwargs
    )

def _is_credential_sastoken(credential: Any) -> bool:
    if not credential or not isinstance(credential, str):
        return False

    sas_values = QueryStringConstants.to_list()
    parsed_query = parse_qs(credential.lstrip("?"))
    if parsed_query and all(k in sas_values for k in parsed_query):
        return True
    return False