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"""This module contains the Amazon DynamoDB Hook."""
from __future__ import annotations

from typing import Iterable

from airflow.exceptions import AirflowException
from airflow.providers.amazon.aws.hooks.base_aws import AwsBaseHook


class DynamoDBHook(AwsBaseHook):
    """
    Interact with Amazon DynamoDB.

    Provide thick wrapper around
    :external+boto3:py:class:`boto3.resource("dynamodb") <DynamoDB.ServiceResource>`.

    :param table_keys: partition key and sort key
    :param table_name: target DynamoDB table

    Additional arguments (such as ``aws_conn_id``) may be specified and
    are passed down to the underlying AwsBaseHook.

    .. seealso::
        - :class:`airflow.providers.amazon.aws.hooks.base_aws.AwsBaseHook`
    """

    def __init__(
        self, *args, table_keys: list | None = None, table_name: str | None = None, **kwargs
    ) -> None:
        self.table_keys = table_keys
        self.table_name = table_name
        kwargs["resource_type"] = "dynamodb"
        super().__init__(*args, **kwargs)

    def write_batch_data(self, items: Iterable) -> bool:
        """
        Write batch items to DynamoDB table with provisioned throughout capacity.

        .. seealso::
            - :external+boto3:py:meth:`DynamoDB.ServiceResource.Table`
            - :external+boto3:py:meth:`DynamoDB.Table.batch_writer`
            - :external+boto3:py:meth:`DynamoDB.Table.put_item`

        :param items: list of DynamoDB items.
        """
        try:
            table = self.get_conn().Table(self.table_name)

            with table.batch_writer(overwrite_by_pkeys=self.table_keys) as batch:
                for item in items:
                    batch.put_item(Item=item)
            return True
        except Exception as general_error:
            raise AirflowException(f"Failed to insert items in dynamodb, error: {general_error}")
