import errno
import json
import logging
import os
import platform
import sys
import uuid
from functools import wraps
from pathlib import Path
from typing import TYPE_CHECKING, Any, Callable, Dict, List, Optional, TypeVar

from mixpanel import Consumer, Mixpanel
from typing_extensions import ParamSpec

from datahub._version import __version__, nice_version_name
from datahub.cli.config_utils import DATAHUB_ROOT_FOLDER
from datahub.cli.env_utils import get_boolean_env_variable
from datahub.configuration.common import ExceptionWithProps
from datahub.metadata.schema_classes import _custom_package_path
from datahub.utilities.perf_timer import PerfTimer

if TYPE_CHECKING:
    from datahub.ingestion.graph.client import DataHubGraph

logger = logging.getLogger(__name__)

DATAHUB_FOLDER = Path(DATAHUB_ROOT_FOLDER)

CONFIG_FILE = DATAHUB_FOLDER / "telemetry-config.json"

# also fall back to environment variable if config file is not found
ENV_ENABLED = get_boolean_env_variable("DATAHUB_TELEMETRY_ENABLED", True)

# see
# https://adamj.eu/tech/2020/03/09/detect-if-your-tests-are-running-on-ci/
# https://github.com/watson/ci-info
CI_ENV_VARS = {
    "APPCENTER",
    "APPCIRCLE",
    "APPCIRCLEAZURE_PIPELINES",
    "APPVEYOR",
    "AZURE_PIPELINES",
    "BAMBOO",
    "BITBUCKET",
    "BITRISE",
    "BUDDY",
    "BUILDKITE",
    "BUILD_ID",
    "CI",
    "CIRCLE",
    "CIRCLECI",
    "CIRRUS",
    "CIRRUS_CI",
    "CI_NAME",
    "CODEBUILD",
    "CODEBUILD_BUILD_ID",
    "CODEFRESH",
    "CODESHIP",
    "CYPRESS_HOST",
    "DRONE",
    "DSARI",
    "EAS_BUILD",
    "GITHUB_ACTIONS",
    "GITLAB",
    "GITLAB_CI",
    "GOCD",
    "HEROKU_TEST_RUN_ID",
    "HUDSON",
    "JENKINS",
    "JENKINS_URL",
    "LAYERCI",
    "MAGNUM",
    "NETLIFY",
    "NEVERCODE",
    "RENDER",
    "SAIL",
    "SCREWDRIVER",
    "SEMAPHORE",
    "SHIPPABLE",
    "SOLANO",
    "STRIDER",
    "TASKCLUSTER",
    "TEAMCITY",
    "TEAMCITY_VERSION",
    "TF_BUILD",
    "TRAVIS",
    "VERCEL",
    "WERCKER_ROOT",
    "bamboo.buildKey",
}

# disable when running in any CI
if any(var in os.environ for var in CI_ENV_VARS):
    ENV_ENABLED = False

# Also disable if a custom metadata model package is in use.
if _custom_package_path:
    ENV_ENABLED = False

TIMEOUT = int(os.environ.get("DATAHUB_TELEMETRY_TIMEOUT", "10"))
MIXPANEL_ENDPOINT = "track.datahubproject.io/mp"
MIXPANEL_TOKEN = "5ee83d940754d63cacbf7d34daa6f44a"
SENTRY_DSN: Optional[str] = os.environ.get("SENTRY_DSN", None)
SENTRY_ENVIRONMENT: str = os.environ.get("SENTRY_ENVIRONMENT", "dev")


def _default_global_properties() -> Dict[str, Any]:
    return {
        "datahub_version": nice_version_name(),
        "python_version": platform.python_version(),
        "os": platform.system(),
        "arch": platform.machine(),
    }


class Telemetry:
    client_id: str
    enabled: bool = True
    tracking_init: bool = False
    sentry_enabled: bool = False

    context_properties: Dict[str, Any] = {}

    def __init__(self):
        self.global_properties = _default_global_properties()
        self.context_properties = {}

        if SENTRY_DSN:
            self.sentry_enabled = True
            try:
                import sentry_sdk

                sentry_sdk.init(
                    dsn=SENTRY_DSN,
                    environment=SENTRY_ENVIRONMENT,
                    release=__version__,
                )
            except Exception as e:
                # We need to print initialization errors to stderr, since logger is not initialized yet
                print(f"Error initializing Sentry: {e}", file=sys.stderr)
                logger.info(f"Error initializing Sentry: {e}")

        # try loading the config if it exists, update it if that fails
        if not CONFIG_FILE.exists() or not self.load_config():
            # set up defaults
            self.client_id = str(uuid.uuid4())
            self.enabled = self.enabled and ENV_ENABLED
            if not self.update_config():
                # If we're not able to persist the client ID, we should default
                # to a standardized value. This prevents us from minting a new
                # client ID every time we start the CLI.
                self.client_id = "00000000-0000-0000-0000-000000000001"

        # send updated user-level properties
        self.mp = None
        if self.enabled:
            try:
                self.mp = Mixpanel(
                    MIXPANEL_TOKEN,
                    consumer=Consumer(
                        request_timeout=int(TIMEOUT), api_host=MIXPANEL_ENDPOINT
                    ),
                )
            except Exception as e:
                logger.debug(f"Error connecting to mixpanel: {e}")

        # Initialize the default properties for all events.
        self.set_context()

    def update_config(self) -> bool:
        """
        Update the config file with the current client ID and enabled status.
        Return True if the update succeeded, False otherwise
        """
        logger.debug("Updating telemetry config")

        try:
            os.makedirs(DATAHUB_FOLDER, exist_ok=True)
            try:
                with open(CONFIG_FILE, "w") as f:
                    json.dump(
                        {"client_id": self.client_id, "enabled": self.enabled},
                        f,
                        indent=2,
                    )
                return True
            except OSError as x:
                if x.errno == errno.ENOENT:
                    logger.debug(
                        f"{CONFIG_FILE} does not exist and could not be created. Please check permissions on the parent folder."
                    )
                elif x.errno == errno.EACCES:
                    logger.debug(
                        f"{CONFIG_FILE} cannot be read. Please check the permissions on this file."
                    )
                else:
                    logger.debug(
                        f"{CONFIG_FILE} had an IOError, please inspect this file for issues."
                    )
        except Exception as e:
            logger.debug(f"Failed to update config file at {CONFIG_FILE} due to {e}")

        return False

    def enable(self) -> None:
        """
        Enable telemetry.
        """

        self.enabled = True
        self.update_config()

    def disable(self) -> None:
        """
        Disable telemetry.
        """

        self.enabled = False
        self.update_config()

    def load_config(self) -> bool:
        """
        Load the saved config for the telemetry client ID and enabled status.
        Returns True if config was correctly loaded, False otherwise.
        """

        try:
            with open(CONFIG_FILE) as f:
                config = json.load(f)
                self.client_id = config["client_id"]
                self.enabled = config["enabled"] & ENV_ENABLED
                return True
        except OSError as x:
            if x.errno == errno.ENOENT:
                logger.debug(
                    f"{CONFIG_FILE} does not exist and could not be created. Please check permissions on the parent folder."
                )
            elif x.errno == errno.EACCES:
                logger.debug(
                    f"{CONFIG_FILE} cannot be read. Please check the permissions on this file."
                )
            else:
                logger.debug(
                    f"{CONFIG_FILE} had an IOError, please inspect this file for issues."
                )
        except Exception as e:
            logger.debug(f"Failed to load {CONFIG_FILE} due to {e}")

        return False

    def add_global_property(self, key: str, value: Any) -> None:
        self.global_properties[key] = value
        self._update_sentry_properties()

    def set_context(
        self,
        server: Optional["DataHubGraph"] = None,
        properties: Optional[Dict[str, Any]] = None,
    ) -> None:
        self.context_properties = {
            **self._server_props(server),
            **(properties or {}),
        }

        self._update_sentry_properties()

    def _update_sentry_properties(self) -> None:
        properties = {
            **self.global_properties,
            **self.context_properties,
        }
        if self.sentry_enabled:
            import sentry_sdk

            sentry_sdk.set_tags(properties)

    def init_capture_exception(self) -> None:
        if self.sentry_enabled:
            import sentry_sdk

            sentry_sdk.set_user({"client_id": self.client_id})
            sentry_sdk.set_context(
                "environment",
                {
                    "environment": SENTRY_ENVIRONMENT,
                    "datahub_version": nice_version_name(),
                    "os": platform.system(),
                    "python_version": platform.python_version(),
                },
            )

    def capture_exception(self, e: BaseException) -> None:
        try:
            if self.sentry_enabled:
                import sentry_sdk

                sentry_sdk.capture_exception(e)
        except Exception as e:
            logger.warning("Failed to capture exception in Sentry.", exc_info=e)

    def init_tracking(self) -> None:
        if not self.enabled or self.mp is None or self.tracking_init is True:
            return

        logger.debug("Sending init telemetry")
        try:
            self.mp.people_set(
                self.client_id,
                self.global_properties,
            )
        except Exception as e:
            logger.debug(f"Error initializing telemetry: {e}")
        self.init_track = True

    def ping(
        self,
        event_name: str,
        properties: Optional[Dict[str, Any]] = None,
    ) -> None:
        """
        Send a single telemetry event.

        Args:
            event_name: name of the event to send.
            properties: metadata for the event
        """

        if not self.enabled or self.mp is None:
            return

        properties = properties or {}

        # send event
        try:
            if event_name == "function-call":
                logger.debug(
                    f"Sending telemetry for {event_name} {properties.get('function')}, status {properties.get('status')}"
                )
            else:
                logger.debug(f"Sending telemetry for {event_name}")

            properties = {
                **self.global_properties,
                **self.context_properties,
                **properties,
            }
            self.mp.track(self.client_id, event_name, properties)
        except Exception as e:
            logger.debug(f"Error reporting telemetry: {e}")

    @classmethod
    def _server_props(cls, server: Optional["DataHubGraph"]) -> Dict[str, str]:
        if not server:
            return {
                "server_type": "n/a",
                "server_version": "n/a",
                "server_id": "n/a",
            }
        else:
            return {
                "server_type": server.server_config.raw_config.get("datahub", {}).get(
                    "serverType", "missing"
                ),
                "server_version": server.server_config.raw_config.get("versions", {})
                .get("acryldata/datahub", {})
                .get("version", "missing"),
                "server_id": server.server_id or "missing",
            }


telemetry_instance = Telemetry()


def suppress_telemetry() -> None:
    """disables telemetry for this invocation, doesn't affect persistent client settings"""
    if telemetry_instance.enabled:
        logger.debug("Disabling telemetry locally due to server config")
    telemetry_instance.enabled = False


def get_full_class_name(obj):
    module = obj.__class__.__module__
    if module is None or module == str.__class__.__module__:
        return obj.__class__.__name__
    return f"{module}.{obj.__class__.__name__}"


def _error_props(error: BaseException) -> Dict[str, Any]:
    props = {
        "error": get_full_class_name(error),
    }

    if isinstance(error, ExceptionWithProps):
        try:
            props.update(error.get_telemetry_props())
        except Exception as e:
            logger.debug(f"Error getting telemetry props for {error}: {e}")

    return props


_T = TypeVar("_T")
_P = ParamSpec("_P")


def with_telemetry(
    *, capture_kwargs: Optional[List[str]] = None
) -> Callable[[Callable[_P, _T]], Callable[_P, _T]]:
    kwargs_to_track = capture_kwargs or []

    def with_telemetry_decorator(func: Callable[_P, _T]) -> Callable[_P, _T]:
        function = f"{func.__module__}.{func.__name__}"

        @wraps(func)
        def wrapper(*args: _P.args, **kwargs: _P.kwargs) -> _T:
            telemetry_instance.init_tracking()
            telemetry_instance.init_capture_exception()

            call_props: Dict[str, Any] = {"function": function}
            for kwarg in kwargs_to_track:
                call_props[f"arg_{kwarg}"] = kwargs.get(kwarg)

            telemetry_instance.ping(
                "function-call",
                {**call_props, "status": "start"},
            )
            try:
                try:
                    with PerfTimer() as timer:
                        res = func(*args, **kwargs)
                finally:
                    call_props["duration"] = timer.elapsed_seconds()

                telemetry_instance.ping(
                    "function-call",
                    {**call_props, "status": "completed"},
                )
                return res
            # System exits (used in ingestion and Docker commands) are not caught by the exception handler,
            # so we need to catch them here.
            except SystemExit as e:
                # Forward successful exits
                # 0 or None imply success
                if not e.code:
                    telemetry_instance.ping(
                        "function-call",
                        {**call_props, "status": "completed"},
                    )
                # Report failed exits
                else:
                    telemetry_instance.ping(
                        "function-call",
                        {
                            **call_props,
                            "status": "error",
                            **_error_props(e),
                            "code": e.code,
                        },
                    )
                telemetry_instance.capture_exception(e)
                raise e
            # Catch SIGINTs
            except KeyboardInterrupt as e:
                telemetry_instance.ping(
                    "function-call",
                    {**call_props, "status": "cancelled"},
                )
                telemetry_instance.capture_exception(e)
                raise e

            # Catch general exceptions
            except BaseException as e:
                telemetry_instance.ping(
                    "function-call",
                    {
                        **call_props,
                        "status": "error",
                        **_error_props(e),
                    },
                )
                telemetry_instance.capture_exception(e)
                raise e

        return wrapper

    return with_telemetry_decorator