"""
Trace queries to aws api done via botocore client
"""
import collections
import json
import os
from typing import Dict  # noqa:F401
from typing import List  # noqa:F401
from typing import Set  # noqa:F401
from typing import Union  # noqa:F401

from botocore import __version__
import botocore.client
import botocore.exceptions
import wrapt

from ddtrace import config
from ddtrace.constants import SPAN_KIND
from ddtrace.contrib.trace_utils import ext_service
from ddtrace.contrib.trace_utils import unwrap
from ddtrace.contrib.trace_utils import with_traced_module
from ddtrace.ext import SpanKind
from ddtrace.ext import SpanTypes
from ddtrace.internal import core
from ddtrace.internal.constants import COMPONENT
from ddtrace.internal.logger import get_logger
from ddtrace.internal.schema import schematize_cloud_api_operation
from ddtrace.internal.schema import schematize_cloud_faas_operation
from ddtrace.internal.schema import schematize_cloud_messaging_operation
from ddtrace.internal.schema import schematize_service_name
from ddtrace.internal.utils import get_argument_value
from ddtrace.internal.utils.formats import asbool
from ddtrace.internal.utils.formats import deep_getattr
from ddtrace.llmobs._integrations import BedrockIntegration
from ddtrace.pin import Pin
from ddtrace.settings.config import Config

from .services.bedrock import patched_bedrock_api_call
from .services.kinesis import patched_kinesis_api_call
from .services.sqs import patched_sqs_api_call
from .services.sqs import update_messages as inject_trace_to_sqs_or_sns_message
from .services.stepfunctions import patched_stepfunction_api_call
from .services.stepfunctions import update_stepfunction_input
from .utils import update_client_context
from .utils import update_eventbridge_detail


_PATCHED_SUBMODULES = set()  # type: Set[str]

# Original botocore client class
_Botocore_client = botocore.client.BaseClient

ARGS_NAME = ("action", "params", "path", "verb")
TRACED_ARGS = {"params", "path", "verb"}
PATCHING_FUNCTIONS = {
    "kinesis": patched_kinesis_api_call,
    "sqs": patched_sqs_api_call,
    "states": patched_stepfunction_api_call,
}

log = get_logger(__name__)


def _load_dynamodb_primary_key_names_for_tables() -> Dict[str, Set[str]]:
    try:
        encoded_table_primary_keys = os.getenv("DD_BOTOCORE_DYNAMODB_TABLE_PRIMARY_KEYS", "{}")
        raw_table_primary_keys = json.loads(encoded_table_primary_keys)

        table_primary_keys = {}
        for table, primary_keys in raw_table_primary_keys.items():
            if not isinstance(table, str):
                raise ValueError(f"expected string table name: {table}")

            if not isinstance(primary_keys, list):
                raise ValueError(f"expected list of primary keys: {primary_keys}")

            unique_primary_keys = set(primary_keys)
            if not len(unique_primary_keys) == len(primary_keys):
                raise ValueError(f"expected unique primary keys: {primary_keys}")

            table_primary_keys[table] = unique_primary_keys

        return table_primary_keys

    except Exception as e:
        log.warning("failed to load DD_BOTOCORE_DYNAMODB_TABLE_PRIMARY_KEYS: %s", e)
        return {}


# Botocore default settings
config._add(
    "botocore",
    {
        "_default_service": os.getenv("DD_BOTOCORE_SERVICE", default="aws"),
        "distributed_tracing": asbool(os.getenv("DD_BOTOCORE_DISTRIBUTED_TRACING", default=True)),
        "invoke_with_legacy_context": asbool(os.getenv("DD_BOTOCORE_INVOKE_WITH_LEGACY_CONTEXT", default=False)),
        "operations": collections.defaultdict(Config._HTTPServerConfig),
        "span_prompt_completion_sample_rate": float(os.getenv("DD_BEDROCK_SPAN_PROMPT_COMPLETION_SAMPLE_RATE", 1.0)),
        "span_char_limit": int(os.getenv("DD_BEDROCK_SPAN_CHAR_LIMIT", 128)),
        "tag_no_params": asbool(os.getenv("DD_AWS_TAG_NO_PARAMS", default=False)),
        "instrument_internals": asbool(os.getenv("DD_BOTOCORE_INSTRUMENT_INTERNALS", default=False)),
        "propagation_enabled": asbool(os.getenv("DD_BOTOCORE_PROPAGATION_ENABLED", default=False)),
        "empty_poll_enabled": asbool(os.getenv("DD_BOTOCORE_EMPTY_POLL_ENABLED", default=True)),
        "dynamodb_primary_key_names_for_tables": _load_dynamodb_primary_key_names_for_tables(),
    },
)


def get_version():
    # type: () -> str
    return __version__


def patch():
    if getattr(botocore.client, "_datadog_patch", False):
        return
    botocore.client._datadog_patch = True

    botocore._datadog_integration = BedrockIntegration(integration_config=config.botocore)
    wrapt.wrap_function_wrapper("botocore.client", "BaseClient._make_api_call", patched_api_call(botocore))
    Pin().onto(botocore.client.BaseClient)
    wrapt.wrap_function_wrapper("botocore.parsers", "ResponseParser.parse", patched_lib_fn)
    Pin().onto(botocore.parsers.ResponseParser)
    _PATCHED_SUBMODULES.clear()


def unpatch():
    _PATCHED_SUBMODULES.clear()
    if getattr(botocore.client, "_datadog_patch", False):
        botocore.client._datadog_patch = False
        unwrap(botocore.parsers.ResponseParser, "parse")
        unwrap(botocore.client.BaseClient, "_make_api_call")


def patch_submodules(submodules):
    # type: (Union[List[str], bool]) -> None
    if isinstance(submodules, bool) and submodules:
        _PATCHED_SUBMODULES.clear()
    elif isinstance(submodules, list):
        submodules = [sub_module.lower() for sub_module in submodules]
        _PATCHED_SUBMODULES.update(submodules)


def patched_lib_fn(original_func, instance, args, kwargs):
    pin = Pin.get_from(instance)
    if not pin or not pin.enabled() or not config.botocore["instrument_internals"]:
        return original_func(*args, **kwargs)
    with core.context_with_data(
        "botocore.instrumented_lib_function",
        span_name="{}.{}".format(original_func.__module__, original_func.__name__),
        tags={COMPONENT: config.botocore.integration_name, SPAN_KIND: SpanKind.CLIENT},
    ) as ctx, ctx.get_item(ctx.get_item("call_key")):
        return original_func(*args, **kwargs)


@with_traced_module
def patched_api_call(botocore, pin, original_func, instance, args, kwargs):
    if not pin or not pin.enabled():
        return original_func(*args, **kwargs)

    endpoint_name = deep_getattr(instance, "_endpoint._endpoint_prefix")

    if _PATCHED_SUBMODULES and endpoint_name not in _PATCHED_SUBMODULES:
        return original_func(*args, **kwargs)

    trace_operation = schematize_cloud_api_operation(
        "{}.command".format(endpoint_name), cloud_provider="aws", cloud_service=endpoint_name
    )

    operation = get_argument_value(args, kwargs, 0, "operation_name", True)
    params = get_argument_value(args, kwargs, 1, "api_params", True)

    function_vars = {
        "endpoint_name": endpoint_name,
        "operation": operation,
        "params": params,
        "pin": pin,
        "trace_operation": trace_operation,
        "integration": botocore._datadog_integration,
    }

    if endpoint_name == "bedrock-runtime" and operation.startswith("InvokeModel"):
        patching_fn = patched_bedrock_api_call
    else:
        patching_fn = PATCHING_FUNCTIONS.get(endpoint_name, patched_api_call_fallback)

    return patching_fn(
        original_func=original_func,
        instance=instance,
        args=args,
        kwargs=kwargs,
        function_vars=function_vars,
    )


def prep_context_injection(ctx, endpoint_name, operation, trace_operation, params):
    cloud_service = None
    injection_function = None
    schematization_function = schematize_cloud_messaging_operation

    if endpoint_name == "lambda" and operation == "Invoke":
        injection_function = update_client_context
        schematization_function = schematize_cloud_faas_operation
        cloud_service = "lambda"
    if endpoint_name == "events" and operation == "PutEvents":
        injection_function = update_eventbridge_detail
        cloud_service = "events"
    if endpoint_name == "sns" and "Publish" in operation:
        injection_function = inject_trace_to_sqs_or_sns_message
        cloud_service = "sns"
    if endpoint_name == "states" and (operation == "StartExecution" or operation == "StartSyncExecution"):
        injection_function = update_stepfunction_input
        cloud_service = "stepfunctions"

    core.dispatch(
        "botocore.prep_context_injection.post",
        [ctx, cloud_service, schematization_function, injection_function, trace_operation],
    )


def patched_api_call_fallback(original_func, instance, args, kwargs, function_vars):
    # default patched api call that is used generally for several services / operations
    params = function_vars.get("params")
    trace_operation = function_vars.get("trace_operation")
    pin = function_vars.get("pin")
    endpoint_name = function_vars.get("endpoint_name")
    operation = function_vars.get("operation")

    with core.context_with_data(
        "botocore.instrumented_api_call",
        instance=instance,
        args=args,
        params=params,
        endpoint_name=endpoint_name,
        operation=operation,
        service=schematize_service_name("{}.{}".format(ext_service(pin, int_config=config.botocore), endpoint_name)),
        pin=pin,
        span_name=function_vars.get("trace_operation"),
        span_type=SpanTypes.HTTP,
        call_key="instrumented_api_call",
    ) as ctx, ctx.get_item("instrumented_api_call"):
        core.dispatch("botocore.patched_api_call.started", [ctx])
        if args and config.botocore["distributed_tracing"]:
            prep_context_injection(ctx, endpoint_name, operation, trace_operation, params)

        try:
            result = original_func(*args, **kwargs)
        except botocore.exceptions.ClientError as e:
            core.dispatch(
                "botocore.patched_api_call.exception",
                [
                    ctx,
                    e.response,
                    botocore.exceptions.ClientError,
                    config.botocore.operations[ctx["instrumented_api_call"].resource].is_error_code,
                ],
            )
            raise
        else:
            core.dispatch("botocore.patched_api_call.success", [ctx, result])
            return result
