"""
Handles embedding calls to Bedrock's `/invoke` endpoint
"""

import copy
import json
import urllib.parse
from typing import Any, Callable, List, Optional, Tuple, Union, get_args

import httpx

import litellm
from litellm.constants import BEDROCK_EMBEDDING_PROVIDERS_LITERAL
from litellm.llms.cohere.embed.handler import embedding as cohere_embedding
from litellm.llms.custom_httpx.http_handler import (
    AsyncHTTPHandler,
    HTTPHandler,
    _get_httpx_client,
    get_async_httpx_client,
)
from litellm.secret_managers.main import get_secret
from litellm.types.llms.bedrock import (
    AmazonEmbeddingRequest,
    CohereEmbeddingRequest,
)
from litellm.types.utils import EmbeddingResponse, LlmProviders

from ..base_aws_llm import BaseAWSLLM
from ..common_utils import BedrockError
from .amazon_nova_transformation import AmazonNovaEmbeddingConfig
from .amazon_titan_g1_transformation import AmazonTitanG1Config
from .amazon_titan_multimodal_transformation import (
    AmazonTitanMultimodalEmbeddingG1Config,
)
from .amazon_titan_v2_transformation import AmazonTitanV2Config
from .cohere_transformation import BedrockCohereEmbeddingConfig
from .twelvelabs_marengo_transformation import TwelveLabsMarengoEmbeddingConfig


class BedrockEmbedding(BaseAWSLLM):
    def _load_credentials(
        self,
        optional_params: dict,
    ) -> Tuple[Any, str]:
        try:
            from botocore.credentials import Credentials
        except ImportError:
            raise ImportError("Missing boto3 to call bedrock. Run 'pip install boto3'.")
        ## CREDENTIALS ##
        # pop aws_secret_access_key, aws_access_key_id, aws_session_token, aws_region_name from kwargs, since completion calls fail with them
        aws_secret_access_key = optional_params.pop("aws_secret_access_key", None)
        aws_access_key_id = optional_params.pop("aws_access_key_id", None)
        aws_session_token = optional_params.pop("aws_session_token", None)
        aws_region_name = optional_params.pop("aws_region_name", None)
        aws_role_name = optional_params.pop("aws_role_name", None)
        aws_session_name = optional_params.pop("aws_session_name", None)
        aws_profile_name = optional_params.pop("aws_profile_name", None)
        aws_web_identity_token = optional_params.pop("aws_web_identity_token", None)
        aws_sts_endpoint = optional_params.pop("aws_sts_endpoint", None)

        ### SET REGION NAME ###
        if aws_region_name is None:
            # check env #
            litellm_aws_region_name = get_secret("AWS_REGION_NAME", None)

            if litellm_aws_region_name is not None and isinstance(
                litellm_aws_region_name, str
            ):
                aws_region_name = litellm_aws_region_name

            standard_aws_region_name = get_secret("AWS_REGION", None)
            if standard_aws_region_name is not None and isinstance(
                standard_aws_region_name, str
            ):
                aws_region_name = standard_aws_region_name

            if aws_region_name is None:
                aws_region_name = "us-west-2"

        credentials: Credentials = self.get_credentials(  # type: ignore
            aws_access_key_id=aws_access_key_id,
            aws_secret_access_key=aws_secret_access_key,
            aws_session_token=aws_session_token,
            aws_region_name=aws_region_name,
            aws_session_name=aws_session_name,
            aws_profile_name=aws_profile_name,
            aws_role_name=aws_role_name,
            aws_web_identity_token=aws_web_identity_token,
            aws_sts_endpoint=aws_sts_endpoint,
        )
        return credentials, aws_region_name

    async def async_embeddings(self):
        pass

    def _make_sync_call(
        self,
        client: Optional[HTTPHandler],
        timeout: Optional[Union[float, httpx.Timeout]],
        api_base: str,
        headers: dict,
        data: dict,
    ) -> dict:
        if client is None or not isinstance(client, HTTPHandler):
            _params = {}
            if timeout is not None:
                if isinstance(timeout, float) or isinstance(timeout, int):
                    timeout = httpx.Timeout(timeout)
                _params["timeout"] = timeout
            client = _get_httpx_client(_params)  # type: ignore
        else:
            client = client
        try:
            response = client.post(url=api_base, headers=headers, data=json.dumps(data))  # type: ignore
            response.raise_for_status()
        except httpx.HTTPStatusError as err:
            error_code = err.response.status_code
            raise BedrockError(status_code=error_code, message=err.response.text)
        except httpx.TimeoutException:
            raise BedrockError(status_code=408, message="Timeout error occurred.")

        return response.json()

    async def _make_async_call(
        self,
        client: Optional[AsyncHTTPHandler],
        timeout: Optional[Union[float, httpx.Timeout]],
        api_base: str,
        headers: dict,
        data: dict,
    ) -> dict:
        if client is None or not isinstance(client, AsyncHTTPHandler):
            _params = {}
            if timeout is not None:
                if isinstance(timeout, float) or isinstance(timeout, int):
                    timeout = httpx.Timeout(timeout)
                _params["timeout"] = timeout
            client = get_async_httpx_client(
                params=_params, llm_provider=litellm.LlmProviders.BEDROCK
            )
        else:
            client = client

        try:
            response = await client.post(url=api_base, headers=headers, data=json.dumps(data))  # type: ignore
            response.raise_for_status()
        except httpx.HTTPStatusError as err:
            error_code = err.response.status_code
            raise BedrockError(status_code=error_code, message=err.response.text)
        except httpx.TimeoutException:
            raise BedrockError(status_code=408, message="Timeout error occurred.")

        return response.json()

    def _transform_response(
        self,
        response_list: List[dict],
        model: str,
        provider: BEDROCK_EMBEDDING_PROVIDERS_LITERAL,
        is_async_invoke: Optional[bool] = False,
        batch_data: Optional[List[dict]] = None,
    ) -> Optional[EmbeddingResponse]:
        """
        Transforms the response from the Bedrock embedding provider to the OpenAI format.
        """
        returned_response: Optional[EmbeddingResponse] = None

        # Handle async invoke responses (single response with invocationArn)
        if (
            is_async_invoke
            and len(response_list) == 1
            and "invocationArn" in response_list[0]
        ):
            if provider == "twelvelabs":
                returned_response = (
                    TwelveLabsMarengoEmbeddingConfig()._transform_async_invoke_response(
                        response=response_list[0], model=model
                    )
                )
            elif provider == "nova":
                returned_response = (
                    AmazonNovaEmbeddingConfig()._transform_async_invoke_response(
                        response=response_list[0], model=model
                    )
                )
            else:
                # For other providers, create a generic async response
                invocation_arn = response_list[0].get("invocationArn", "")

                from litellm.types.utils import Embedding, Usage

                embedding = Embedding(
                    embedding=[],
                    index=0,
                    object="embedding",  # Must be literal "embedding"
                )
                usage = Usage(prompt_tokens=0, total_tokens=0)

                # Create hidden params with job ID
                from litellm.types.llms.base import HiddenParams

                hidden_params = HiddenParams()
                setattr(hidden_params, "_invocation_arn", invocation_arn)

                returned_response = EmbeddingResponse(
                    data=[embedding],
                    model=model,
                    usage=usage,
                    hidden_params=hidden_params,
                )
        else:
            # Handle regular invoke responses
            if model == "amazon.titan-embed-image-v1":
                returned_response = (
                    AmazonTitanMultimodalEmbeddingG1Config()._transform_response(
                        response_list=response_list, model=model, batch_data=batch_data
                    )
                )
            elif model == "amazon.titan-embed-text-v1":
                returned_response = AmazonTitanG1Config()._transform_response(
                    response_list=response_list, model=model
                )
            elif model == "amazon.titan-embed-text-v2:0":
                returned_response = AmazonTitanV2Config()._transform_response(
                    response_list=response_list, model=model
                )
            elif provider == "twelvelabs":
                returned_response = (
                    TwelveLabsMarengoEmbeddingConfig()._transform_response(
                        response_list=response_list, model=model
                    )
                )
            elif provider == "nova":
                returned_response = AmazonNovaEmbeddingConfig()._transform_response(
                    response_list=response_list, model=model, batch_data=batch_data
                )

        ##########################################################
        # Validate returned response
        ##########################################################
        if returned_response is None:
            raise Exception(
                "Unable to map model response to known provider format. model={}".format(
                    model
                )
            )
        return returned_response

    def _single_func_embeddings(
        self,
        client: Optional[HTTPHandler],
        timeout: Optional[Union[float, httpx.Timeout]],
        batch_data: List[dict],
        credentials: Any,
        extra_headers: Optional[dict],
        endpoint_url: str,
        aws_region_name: str,
        model: str,
        logging_obj: Any,
        provider: BEDROCK_EMBEDDING_PROVIDERS_LITERAL,
        api_key: Optional[str] = None,
        is_async_invoke: Optional[bool] = False,
    ):
        responses: List[dict] = []
        for data in batch_data:
            headers = {"Content-Type": "application/json"}
            if extra_headers is not None:
                headers = {"Content-Type": "application/json", **extra_headers}

            prepped = self.get_request_headers(  # type: ignore  # type: ignore
                credentials=credentials,
                aws_region_name=aws_region_name,
                extra_headers=extra_headers,
                endpoint_url=endpoint_url,
                data=json.dumps(data),
                headers=headers,
                api_key=api_key,
            )

            ## LOGGING
            logging_obj.pre_call(
                input=data,
                api_key="",
                additional_args={
                    "complete_input_dict": data,
                    "api_base": prepped.url,
                    "headers": prepped.headers,
                },
            )
            headers_for_request = (
                dict(prepped.headers) if hasattr(prepped, "headers") else {}
            )
            response = self._make_sync_call(
                client=client,
                timeout=timeout,
                api_base=prepped.url,
                headers=headers_for_request,
                data=data,
            )

            ## LOGGING
            logging_obj.post_call(
                input=data,
                api_key="",
                original_response=response,
                additional_args={"complete_input_dict": data},
            )

            responses.append(response)

        return self._transform_response(
            response_list=responses,
            model=model,
            provider=provider,
            is_async_invoke=is_async_invoke,
            batch_data=batch_data,
        )

    async def _async_single_func_embeddings(
        self,
        client: Optional[AsyncHTTPHandler],
        timeout: Optional[Union[float, httpx.Timeout]],
        batch_data: List[dict],
        credentials: Any,
        extra_headers: Optional[dict],
        endpoint_url: str,
        aws_region_name: str,
        model: str,
        logging_obj: Any,
        provider: BEDROCK_EMBEDDING_PROVIDERS_LITERAL,
        api_key: Optional[str] = None,
        is_async_invoke: Optional[bool] = False,
    ):
        responses: List[dict] = []
        for data in batch_data:
            headers = {"Content-Type": "application/json"}
            if extra_headers is not None:
                headers = {"Content-Type": "application/json", **extra_headers}

            prepped = self.get_request_headers(  # type: ignore  # type: ignore
                credentials=credentials,
                aws_region_name=aws_region_name,
                extra_headers=extra_headers,
                endpoint_url=endpoint_url,
                data=json.dumps(data),
                headers=headers,
                api_key=api_key,
            )

            ## LOGGING
            logging_obj.pre_call(
                input=data,
                api_key="",
                additional_args={
                    "complete_input_dict": data,
                    "api_base": prepped.url,
                    "headers": prepped.headers,
                },
            )
            # Convert CaseInsensitiveDict to regular dict for httpx compatibility
            # This ensures custom headers are properly forwarded, especially with IAM roles and custom api_base
            headers_for_request = (
                dict(prepped.headers) if hasattr(prepped, "headers") else {}
            )
            response = await self._make_async_call(
                client=client,
                timeout=timeout,
                api_base=prepped.url,
                headers=headers_for_request,
                data=data,
            )

            ## LOGGING
            logging_obj.post_call(
                input=data,
                api_key="",
                original_response=response,
                additional_args={"complete_input_dict": data},
            )

            responses.append(response)
        ## TRANSFORM RESPONSE ##
        return self._transform_response(
            response_list=responses,
            model=model,
            provider=provider,
            is_async_invoke=is_async_invoke,
            batch_data=batch_data,
        )

    def embeddings(
        self,
        model: str,
        input: List[str],
        api_base: Optional[str],
        model_response: EmbeddingResponse,
        print_verbose: Callable,
        encoding,
        logging_obj,
        client: Optional[Union[HTTPHandler, AsyncHTTPHandler]],
        timeout: Optional[Union[float, httpx.Timeout]],
        aembedding: Optional[bool],
        extra_headers: Optional[dict],
        optional_params: dict,
        litellm_params: dict,
        api_key: Optional[str] = None,
    ) -> EmbeddingResponse:
        credentials, aws_region_name = self._load_credentials(optional_params)

        ### TRANSFORMATION ###
        unencoded_model_id = (
            optional_params.pop("model_id", None) or model
        )  # default to model if not passed
        modelId = urllib.parse.quote(unencoded_model_id, safe="")
        aws_region_name = self._get_aws_region_name(
            optional_params={"aws_region_name": aws_region_name},
            model=model,
            model_id=unencoded_model_id,
        )
        # Check async invoke needs to be used
        has_async_invoke = "async_invoke/" in model
        if has_async_invoke:
            model = model.replace("async_invoke/", "", 1)
        provider = self.get_bedrock_embedding_provider(model)
        if provider is None:
            raise Exception(
                f"Unable to determine bedrock embedding provider for model: {model}. "
                f"Supported providers: {list(get_args(BEDROCK_EMBEDDING_PROVIDERS_LITERAL))}"
            )
        inference_params = copy.deepcopy(optional_params)
        inference_params = {
            k: v
            for k, v in inference_params.items()
            if k.lower() not in self.aws_authentication_params
        }
        inference_params.pop(
            "user", None
        )  # make sure user is not passed in for bedrock call

        data: Optional[CohereEmbeddingRequest] = None
        batch_data: Optional[List] = None
        if provider == "cohere":
            data = BedrockCohereEmbeddingConfig()._transform_request(
                model=model, input=input, inference_params=inference_params
            )
        elif provider == "amazon" and model in [
            "amazon.titan-embed-image-v1",
            "amazon.titan-embed-text-v1",
            "amazon.titan-embed-text-v2:0",
        ]:
            batch_data = []
            for i in input:
                if model == "amazon.titan-embed-image-v1":
                    transformed_request: (
                        AmazonEmbeddingRequest
                    ) = AmazonTitanMultimodalEmbeddingG1Config()._transform_request(
                        input=i, inference_params=inference_params
                    )
                elif model == "amazon.titan-embed-text-v1":
                    transformed_request = AmazonTitanG1Config()._transform_request(
                        input=i, inference_params=inference_params
                    )
                elif model == "amazon.titan-embed-text-v2:0":
                    transformed_request = AmazonTitanV2Config()._transform_request(
                        input=i, inference_params=inference_params
                    )
                else:
                    raise Exception(
                        "Unmapped model. Received={}. Expected={}".format(
                            model,
                            [
                                "amazon.titan-embed-image-v1",
                                "amazon.titan-embed-text-v1",
                                "amazon.titan-embed-text-v2:0",
                            ],
                        )
                    )
                batch_data.append(transformed_request)
        elif provider == "twelvelabs":
            batch_data = []
            for i in input:
                twelvelabs_request = (
                    TwelveLabsMarengoEmbeddingConfig()._transform_request(
                        input=i,
                        inference_params=inference_params,
                        async_invoke_route=has_async_invoke,
                        model_id=modelId,
                        output_s3_uri=inference_params.get("output_s3_uri"),
                    )
                )
                batch_data.append(twelvelabs_request)
        elif provider == "nova":
            batch_data = []
            for i in input:
                nova_request = AmazonNovaEmbeddingConfig()._transform_request(
                    input=i,
                    inference_params=inference_params,
                    async_invoke_route=has_async_invoke,
                    model_id=modelId,
                    output_s3_uri=inference_params.get("output_s3_uri"),
                )
                batch_data.append(nova_request)

        ### SET RUNTIME ENDPOINT ###
        endpoint_url, proxy_endpoint_url = self.get_runtime_endpoint(
            api_base=api_base,
            aws_bedrock_runtime_endpoint=optional_params.pop(
                "aws_bedrock_runtime_endpoint", None
            ),
            aws_region_name=aws_region_name,
        )
        if has_async_invoke:
            endpoint_url = f"{endpoint_url}/async-invoke"
        else:
            endpoint_url = f"{endpoint_url}/model/{modelId}/invoke"

        if batch_data is not None:
            if aembedding:
                return self._async_single_func_embeddings(  # type: ignore
                    client=(
                        client
                        if client is not None and isinstance(client, AsyncHTTPHandler)
                        else None
                    ),
                    timeout=timeout,
                    batch_data=batch_data,
                    credentials=credentials,
                    extra_headers=extra_headers,
                    endpoint_url=endpoint_url,
                    aws_region_name=aws_region_name,
                    model=model,
                    logging_obj=logging_obj,
                    api_key=api_key,
                    provider=provider,
                    is_async_invoke=has_async_invoke,
                )
            returned_response = self._single_func_embeddings(
                client=(
                    client
                    if client is not None and isinstance(client, HTTPHandler)
                    else None
                ),
                timeout=timeout,
                batch_data=batch_data,
                credentials=credentials,
                extra_headers=extra_headers,
                endpoint_url=endpoint_url,
                aws_region_name=aws_region_name,
                model=model,
                logging_obj=logging_obj,
                api_key=api_key,
                provider=provider,
                is_async_invoke=has_async_invoke,
            )
            if returned_response is None:
                raise Exception("Unable to map Bedrock request to provider")
            return returned_response
        elif data is None:
            raise Exception("Unable to map Bedrock request to provider")

        headers = {"Content-Type": "application/json"}
        if extra_headers is not None:
            headers = {"Content-Type": "application/json", **extra_headers}

        prepped = self.get_request_headers(  # type: ignore
            credentials=credentials,
            aws_region_name=aws_region_name,
            extra_headers=extra_headers,
            endpoint_url=endpoint_url,
            data=json.dumps(data),
            headers=headers,
            api_key=api_key,
        )

        ## ROUTING ##
        # Convert CaseInsensitiveDict to regular dict for httpx compatibility
        headers_for_request = (
            dict(prepped.headers) if hasattr(prepped, "headers") else {}
        )
        return cohere_embedding(
            model=model,
            input=input,
            model_response=model_response,
            logging_obj=logging_obj,
            optional_params=optional_params,
            encoding=encoding,
            data=data,  # type: ignore
            complete_api_base=prepped.url,
            api_key=None,
            aembedding=aembedding,
            timeout=timeout,
            client=client,
            headers=headers_for_request,
        )

    async def _get_async_invoke_status(
        self, invocation_arn: str, aws_region_name: str, logging_obj=None, **kwargs
    ) -> dict:
        """
        Get the status of an async invoke job using the GetAsyncInvoke operation.

        Args:
            invocation_arn: The invocation ARN from the async invoke response
            aws_region_name: AWS region name
            **kwargs: Additional parameters (credentials, etc.)

        Returns:
            dict: Status response from AWS Bedrock
        """

        # Get AWS credentials using the same method as other Bedrock methods
        credentials, _ = self._load_credentials(kwargs)

        # Get the runtime endpoint
        endpoint_url, _ = self.get_runtime_endpoint(
            api_base=None,
            aws_bedrock_runtime_endpoint=kwargs.get("aws_bedrock_runtime_endpoint"),
            aws_region_name=aws_region_name,
        )

        from urllib.parse import quote

        # Encode the ARN for use in URL path
        encoded_arn = quote(invocation_arn, safe="")
        status_url = f"{endpoint_url.rstrip('/')}/async-invoke/{encoded_arn}"

        # Prepare headers for GET request
        headers = {"Content-Type": "application/json"}

        # Use AWSRequest directly for GET requests (get_request_headers hardcodes POST)
        try:
            from botocore.auth import SigV4Auth
            from botocore.awsrequest import AWSRequest
        except ImportError:
            raise ImportError("Missing boto3 to call bedrock. Run 'pip install boto3'.")

        # Create AWSRequest with GET method and encoded URL
        request = AWSRequest(
            method="GET",
            url=status_url,
            data=None,  # GET request, no body
            headers=headers,
        )

        # Sign the request - SigV4Auth will create canonical string from request URL
        sigv4 = SigV4Auth(credentials, "bedrock", aws_region_name)
        sigv4.add_auth(request)

        # Prepare the request
        prepped = request.prepare()

        # LOGGING
        if logging_obj is not None:
            # Create custom curl command for GET request
            masked_headers = logging_obj._get_masked_headers(prepped.headers)
            formatted_headers = " ".join(
                [f"-H '{k}: {v}'" for k, v in masked_headers.items()]
            )
            custom_curl = "\n\nGET Request Sent from LiteLLM:\n"
            custom_curl += "curl -X GET \\\n"
            custom_curl += f"{prepped.url} \\\n"
            custom_curl += f"{formatted_headers}\n"

            logging_obj.pre_call(
                input=invocation_arn,
                api_key="",
                additional_args={
                    "complete_input_dict": {"invocation_arn": invocation_arn},
                    "api_base": prepped.url,
                    "headers": prepped.headers,
                    "request_str": custom_curl,  # Override with custom GET curl command
                },
            )

        # Make the GET request
        client = get_async_httpx_client(llm_provider=LlmProviders.BEDROCK)
        response = await client.get(
            url=prepped.url,
            headers=prepped.headers,
        )

        # LOGGING
        if logging_obj is not None:
            logging_obj.post_call(
                input=invocation_arn,
                api_key="",
                original_response=response,
                additional_args={
                    "complete_input_dict": {"invocation_arn": invocation_arn}
                },
            )

        # Parse response
        if response.status_code == 200:
            return response.json()
        else:
            raise Exception(
                f"Failed to get async invoke status: {response.status_code} - {response.text}"
            )
