"""
auth service

This service provides authentication management and authorization
validation for the entire system.
"""
from datetime import datetime

import six
from dateutil.parser import parse as parse_datetime

from ....backend_api.session import NonStrictDataModel, Request, Response, schema_property


class Credentials(NonStrictDataModel):
    """
    :param access_key: Credentials access key
    :type access_key: str
    :param secret_key: Credentials secret key
    :type secret_key: str
    """
    _schema = {
        'properties': {
            'access_key': {
                'description': 'Credentials access key',
                'type': ['string', 'null'],
            },
            'secret_key': {
                'description': 'Credentials secret key',
                'type': ['string', 'null'],
            },
        },
        'type': 'object',
    }

    def __init__(
            self, access_key=None, secret_key=None, **kwargs):
        super(Credentials, self).__init__(**kwargs)
        self.access_key = access_key
        self.secret_key = secret_key

    @schema_property('access_key')
    def access_key(self):
        return self._property_access_key

    @access_key.setter
    def access_key(self, value):
        if value is None:
            self._property_access_key = None
            return

        self.assert_isinstance(value, "access_key", six.string_types)
        self._property_access_key = value

    @schema_property('secret_key')
    def secret_key(self):
        return self._property_secret_key

    @secret_key.setter
    def secret_key(self, value):
        if value is None:
            self._property_secret_key = None
            return

        self.assert_isinstance(value, "secret_key", six.string_types)
        self._property_secret_key = value


class CredentialKey(NonStrictDataModel):
    """
    :param access_key:
    :type access_key: str
    :param last_used:
    :type last_used: datetime.datetime
    :param last_used_from:
    :type last_used_from: str
    """
    _schema = {
        'properties': {
            'access_key': {'description': '', 'type': ['string', 'null']},
            'last_used': {
                'description': '',
                'format': 'date-time',
                'type': ['string', 'null'],
            },
            'last_used_from': {'description': '', 'type': ['string', 'null']},
        },
        'type': 'object',
    }

    def __init__(
            self, access_key=None, last_used=None, last_used_from=None, **kwargs):
        super(CredentialKey, self).__init__(**kwargs)
        self.access_key = access_key
        self.last_used = last_used
        self.last_used_from = last_used_from

    @schema_property('access_key')
    def access_key(self):
        return self._property_access_key

    @access_key.setter
    def access_key(self, value):
        if value is None:
            self._property_access_key = None
            return

        self.assert_isinstance(value, "access_key", six.string_types)
        self._property_access_key = value

    @schema_property('last_used')
    def last_used(self):
        return self._property_last_used

    @last_used.setter
    def last_used(self, value):
        if value is None:
            self._property_last_used = None
            return

        self.assert_isinstance(value, "last_used", six.string_types + (datetime,))
        if not isinstance(value, datetime):
            value = parse_datetime(value)
        self._property_last_used = value

    @schema_property('last_used_from')
    def last_used_from(self):
        return self._property_last_used_from

    @last_used_from.setter
    def last_used_from(self, value):
        if value is None:
            self._property_last_used_from = None
            return

        self.assert_isinstance(value, "last_used_from", six.string_types)
        self._property_last_used_from = value


class CreateCredentialsRequest(Request):
    """
    Creates a new set of credentials for the authenticated user.
                            New key/secret is returned.
                            Note: Secret will never be returned in any other API call.
                            If a secret is lost or compromised, the key should be revoked
                            and a new set of credentials can be created.

    """

    _service = "auth"
    _action = "create_credentials"
    _version = "2.1"
    _schema = {
        'additionalProperties': False,
        'definitions': {},
        'properties': {},
        'type': 'object',
    }


class CreateCredentialsResponse(Response):
    """
    Response of auth.create_credentials endpoint.

    :param credentials: Created credentials
    :type credentials: Credentials
    """
    _service = "auth"
    _action = "create_credentials"
    _version = "2.1"

    _schema = {
        'definitions': {
            'credentials': {
                'properties': {
                    'access_key': {
                        'description': 'Credentials access key',
                        'type': ['string', 'null'],
                    },
                    'secret_key': {
                        'description': 'Credentials secret key',
                        'type': ['string', 'null'],
                    },
                },
                'type': 'object',
            },
        },
        'properties': {
            'credentials': {
                'description': 'Created credentials',
                'oneOf': [{'$ref': '#/definitions/credentials'}, {'type': 'null'}],
            },
        },
        'type': 'object',
    }

    def __init__(
            self, credentials=None, **kwargs):
        super(CreateCredentialsResponse, self).__init__(**kwargs)
        self.credentials = credentials

    @schema_property('credentials')
    def credentials(self):
        return self._property_credentials

    @credentials.setter
    def credentials(self, value):
        if value is None:
            self._property_credentials = None
            return
        if isinstance(value, dict):
            value = Credentials.from_dict(value)
        else:
            self.assert_isinstance(value, "credentials", Credentials)
        self._property_credentials = value


class EditUserRequest(Request):
    """
     Edit a users' auth data properties

    :param user: User ID
    :type user: str
    :param role: The new user's role within the company
    :type role: str
    """

    _service = "auth"
    _action = "edit_user"
    _version = "2.1"
    _schema = {
        'definitions': {},
        'properties': {
            'role': {
                'description': "The new user's role within the company",
                'enum': ['admin', 'superuser', 'user', 'annotator'],
                'type': ['string', 'null'],
            },
            'user': {'description': 'User ID', 'type': ['string', 'null']},
        },
        'type': 'object',
    }

    def __init__(
            self, user=None, role=None, **kwargs):
        super(EditUserRequest, self).__init__(**kwargs)
        self.user = user
        self.role = role

    @schema_property('user')
    def user(self):
        return self._property_user

    @user.setter
    def user(self, value):
        if value is None:
            self._property_user = None
            return

        self.assert_isinstance(value, "user", six.string_types)
        self._property_user = value

    @schema_property('role')
    def role(self):
        return self._property_role

    @role.setter
    def role(self, value):
        if value is None:
            self._property_role = None
            return

        self.assert_isinstance(value, "role", six.string_types)
        self._property_role = value


class EditUserResponse(Response):
    """
    Response of auth.edit_user endpoint.

    :param updated: Number of users updated (0 or 1)
    :type updated: float
    :param fields: Updated fields names and values
    :type fields: dict
    """
    _service = "auth"
    _action = "edit_user"
    _version = "2.1"

    _schema = {
        'definitions': {},
        'properties': {
            'fields': {
                'additionalProperties': True,
                'description': 'Updated fields names and values',
                'type': ['object', 'null'],
            },
            'updated': {
                'description': 'Number of users updated (0 or 1)',
                'enum': [0, 1],
                'type': ['number', 'null'],
            },
        },
        'type': 'object',
    }

    def __init__(
            self, updated=None, fields=None, **kwargs):
        super(EditUserResponse, self).__init__(**kwargs)
        self.updated = updated
        self.fields = fields

    @schema_property('updated')
    def updated(self):
        return self._property_updated

    @updated.setter
    def updated(self, value):
        if value is None:
            self._property_updated = None
            return

        self.assert_isinstance(value, "updated", six.integer_types + (float,))
        self._property_updated = value

    @schema_property('fields')
    def fields(self):
        return self._property_fields

    @fields.setter
    def fields(self, value):
        if value is None:
            self._property_fields = None
            return

        self.assert_isinstance(value, "fields", (dict,))
        self._property_fields = value


class GetCredentialsRequest(Request):
    """
    Returns all existing credential keys for the authenticated user.
            Note: Only credential keys are returned.

    """

    _service = "auth"
    _action = "get_credentials"
    _version = "1.5"
    _schema = {
        'additionalProperties': False,
        'definitions': {},
        'properties': {},
        'type': 'object',
    }


class GetCredentialsResponse(Response):
    """
    Response of auth.get_credentials endpoint.

    :param credentials: List of credentials, each with an empty secret field.
    :type credentials: Sequence[CredentialKey]
    """
    _service = "auth"
    _action = "get_credentials"
    _version = "1.5"

    _schema = {
        'definitions': {
            'credential_key': {
                'properties': {
                    'access_key': {'description': '', 'type': ['string', 'null']},
                    'last_used': {
                        'description': '',
                        'format': 'date-time',
                        'type': ['string', 'null'],
                    },
                    'last_used_from': {
                        'description': '',
                        'type': ['string', 'null'],
                    },
                },
                'type': 'object',
            },
        },
        'properties': {
            'credentials': {
                'description': 'List of credentials, each with an empty secret field.',
                'items': {'$ref': '#/definitions/credential_key'},
                'type': ['array', 'null'],
            },
        },
        'type': 'object',
    }

    def __init__(
            self, credentials=None, **kwargs):
        super(GetCredentialsResponse, self).__init__(**kwargs)
        self.credentials = credentials

    @schema_property('credentials')
    def credentials(self):
        return self._property_credentials

    @credentials.setter
    def credentials(self, value):
        if value is None:
            self._property_credentials = None
            return

        self.assert_isinstance(value, "credentials", (list, tuple))
        if any(isinstance(v, dict) for v in value):
            value = [CredentialKey.from_dict(v) if isinstance(v, dict) else v for v in value]
        else:
            self.assert_isinstance(value, "credentials", CredentialKey, is_array=True)
        self._property_credentials = value


class LoginRequest(Request):
    """
    Get a token based on supplied credentials (key/secret).
            Intended for use by users with key/secret credentials that wish to obtain a token
            for use with other services. Token will be limited by the same permissions that
            exist for the credentials used in this call.

    :param expiration_sec: Requested token expiration time in seconds. Not
        guaranteed,  might be overridden by the service
    :type expiration_sec: int
    """

    _service = "auth"
    _action = "login"
    _version = "2.1"
    _schema = {
        'definitions': {},
        'properties': {
            'expiration_sec': {
                'description': 'Requested token expiration time in seconds. \n                        Not guaranteed,  might be overridden by the service',
                'type': ['integer', 'null'],
            },
        },
        'type': 'object',
    }

    def __init__(
            self, expiration_sec=None, **kwargs):
        super(LoginRequest, self).__init__(**kwargs)
        self.expiration_sec = expiration_sec

    @schema_property('expiration_sec')
    def expiration_sec(self):
        return self._property_expiration_sec

    @expiration_sec.setter
    def expiration_sec(self, value):
        if value is None:
            self._property_expiration_sec = None
            return
        if isinstance(value, float) and value.is_integer():
            value = int(value)

        self.assert_isinstance(value, "expiration_sec", six.integer_types)
        self._property_expiration_sec = value


class LoginResponse(Response):
    """
    Response of auth.login endpoint.

    :param token: Token string
    :type token: str
    """
    _service = "auth"
    _action = "login"
    _version = "2.1"

    _schema = {
        'definitions': {},
        'properties': {
            'token': {'description': 'Token string', 'type': ['string', 'null']},
        },
        'type': 'object',
    }

    def __init__(
            self, token=None, **kwargs):
        super(LoginResponse, self).__init__(**kwargs)
        self.token = token

    @schema_property('token')
    def token(self):
        return self._property_token

    @token.setter
    def token(self, value):
        if value is None:
            self._property_token = None
            return

        self.assert_isinstance(value, "token", six.string_types)
        self._property_token = value


class RevokeCredentialsRequest(Request):
    """
    Revokes (and deletes) a set (key, secret) of credentials for
            the authenticated user.

    :param access_key: Credentials key
    :type access_key: str
    """

    _service = "auth"
    _action = "revoke_credentials"
    _version = "2.1"
    _schema = {
        'definitions': {},
        'properties': {
            'access_key': {
                'description': 'Credentials key',
                'type': ['string', 'null'],
            },
        },
        'required': ['key_id'],
        'type': 'object',
    }

    def __init__(
            self, access_key=None, **kwargs):
        super(RevokeCredentialsRequest, self).__init__(**kwargs)
        self.access_key = access_key

    @schema_property('access_key')
    def access_key(self):
        return self._property_access_key

    @access_key.setter
    def access_key(self, value):
        if value is None:
            self._property_access_key = None
            return

        self.assert_isinstance(value, "access_key", six.string_types)
        self._property_access_key = value


class RevokeCredentialsResponse(Response):
    """
    Response of auth.revoke_credentials endpoint.

    :param revoked: Number of credentials revoked
    :type revoked: int
    """
    _service = "auth"
    _action = "revoke_credentials"
    _version = "2.1"

    _schema = {
        'definitions': {},
        'properties': {
            'revoked': {
                'description': 'Number of credentials revoked',
                'enum': [0, 1],
                'type': ['integer', 'null'],
            },
        },
        'type': 'object',
    }

    def __init__(
            self, revoked=None, **kwargs):
        super(RevokeCredentialsResponse, self).__init__(**kwargs)
        self.revoked = revoked

    @schema_property('revoked')
    def revoked(self):
        return self._property_revoked

    @revoked.setter
    def revoked(self, value):
        if value is None:
            self._property_revoked = None
            return
        if isinstance(value, float) and value.is_integer():
            value = int(value)

        self.assert_isinstance(value, "revoked", six.integer_types)
        self._property_revoked = value


response_mapping = {
    LoginRequest: LoginResponse,
    CreateCredentialsRequest: CreateCredentialsResponse,
    GetCredentialsRequest: GetCredentialsResponse,
    RevokeCredentialsRequest: RevokeCredentialsResponse,
    EditUserRequest: EditUserResponse,
}