# ---------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# ---------------------------------------------------------

# pylint: disable=protected-access

import logging
import re
from os import PathLike
from typing import Any, Optional, Tuple, Union

from azure.ai.ml._artifacts._artifact_utilities import _check_and_upload_env_build_context, _check_and_upload_path
from azure.ai.ml._scope_dependent_operations import OperationConfig, OperationsContainer, OperationScope
from azure.ai.ml._utils._arm_id_utils import (
    AMLLabelledArmId,
    AMLNamedArmId,
    AMLVersionedArmId,
    get_arm_id_with_version,
    is_ARM_id_for_resource,
    is_registry_id_for_resource,
    is_singularity_full_name_for_resource,
    is_singularity_id_for_resource,
    is_singularity_short_name_for_resource,
    parse_name_label,
    parse_prefixed_name_version,
)
from azure.ai.ml._utils._asset_utils import _resolve_label_to_asset, get_storage_info_for_non_registry_asset
from azure.ai.ml._utils._storage_utils import AzureMLDatastorePathUri
from azure.ai.ml.constants._common import (
    ARM_ID_PREFIX,
    AZUREML_RESOURCE_PROVIDER,
    CURATED_ENV_PREFIX,
    DEFAULT_LABEL_NAME,
    FILE_PREFIX,
    FOLDER_PREFIX,
    HTTPS_PREFIX,
    JOB_URI_REGEX_FORMAT,
    LABELLED_RESOURCE_ID_FORMAT,
    LABELLED_RESOURCE_NAME,
    MLFLOW_URI_REGEX_FORMAT,
    NAMED_RESOURCE_ID_FORMAT,
    REGISTRY_VERSION_PATTERN,
    SINGULARITY_FULL_NAME_REGEX_FORMAT,
    SINGULARITY_ID_FORMAT,
    SINGULARITY_SHORT_NAME_REGEX_FORMAT,
    VERSIONED_RESOURCE_ID_FORMAT,
    VERSIONED_RESOURCE_NAME,
    AzureMLResourceType,
)
from azure.ai.ml.entities import Component
from azure.ai.ml.entities._assets import Code, Data, Environment, Model
from azure.ai.ml.entities._assets.asset import Asset
from azure.ai.ml.exceptions import (
    AssetException,
    EmptyDirectoryError,
    ErrorCategory,
    ErrorTarget,
    MlException,
    ModelException,
    ValidationErrorType,
    ValidationException,
)
from azure.core.exceptions import HttpResponseError, ResourceNotFoundError

module_logger = logging.getLogger(__name__)


class OperationOrchestrator(object):
    def __init__(
        self,
        operation_container: OperationsContainer,
        operation_scope: OperationScope,
        operation_config: OperationConfig,
    ):
        self._operation_container = operation_container
        self._operation_scope = operation_scope
        self._operation_config = operation_config

    @property
    def _datastore_operation(self):
        return self._operation_container.all_operations[AzureMLResourceType.DATASTORE]

    @property
    def _code_assets(self):
        return self._operation_container.all_operations[AzureMLResourceType.CODE]

    @property
    def _model(self):
        return self._operation_container.all_operations[AzureMLResourceType.MODEL]

    @property
    def _environments(self):
        return self._operation_container.all_operations[AzureMLResourceType.ENVIRONMENT]

    @property
    def _data(self):
        return self._operation_container.all_operations[AzureMLResourceType.DATA]

    @property
    def _component(self):
        return self._operation_container.all_operations[AzureMLResourceType.COMPONENT]

    @property
    def _virtual_cluster(self):
        return self._operation_container.all_operations[AzureMLResourceType.VIRTUALCLUSTER]

    def get_asset_arm_id(
        self,
        asset: Optional[Union[str, Asset]],
        azureml_type: str,
        register_asset: bool = True,
        sub_workspace_resource: bool = True,
    ) -> Optional[Union[str, Asset]]:
        """This method converts AzureML Id to ARM Id. Or if the given asset is entity object, it tries to
        register/upload the asset based on register_asset and azureml_type.

        :param asset: The asset to resolve/register. It can be a ARM id or a entity's object.
        :type asset: Optional[Union[str, Asset]]
        :param azureml_type: The AzureML resource type. Defined in AzureMLResourceType.
        :type azureml_type: str
        :param register_asset: Indicates if the asset should be registered, defaults to True.
        :type register_asset: Optional[bool]
        :param sub_workspace_resource:
        :type sub_workspace_resource: Optional[bool]
        :param arm_id_cache_dict: A dict to cache the ARM id of input asset.
        :type arm_id_cache_dict: Optional[Dict[str, str]]
        :raises ~azure.ai.ml.exceptions.ValidationException: Raised if asset's ID cannot be converted
            or asset cannot be successfully registered.
        :return: The ARM Id or entity object
        :rtype: Optional[Union[str, ~azure.ai.ml.entities.Asset]]
        """
        # pylint: disable=too-many-return-statements, too-many-branches
        if (
            asset is None
            or is_ARM_id_for_resource(asset, azureml_type, sub_workspace_resource)
            or is_registry_id_for_resource(asset)
            or is_singularity_id_for_resource(asset)
        ):
            return asset
        if is_singularity_full_name_for_resource(asset):
            return self._get_singularity_arm_id_from_full_name(asset)
        if is_singularity_short_name_for_resource(asset):
            return self._get_singularity_arm_id_from_short_name(asset)
        if isinstance(asset, str):
            if azureml_type in AzureMLResourceType.NAMED_TYPES:
                return NAMED_RESOURCE_ID_FORMAT.format(
                    self._operation_scope.subscription_id,
                    self._operation_scope.resource_group_name,
                    AZUREML_RESOURCE_PROVIDER,
                    self._operation_scope.workspace_name,
                    azureml_type,
                    asset,
                )
            if azureml_type in AzureMLResourceType.VERSIONED_TYPES:
                # Short form of curated env will be expanded on the backend side.
                # CLI strips off azureml: in the schema, appending it back as required by backend
                if azureml_type == AzureMLResourceType.ENVIRONMENT:
                    azureml_prefix = "azureml:"
                    # return the same value if resolved result is passed in
                    _asset = asset[len(azureml_prefix) :] if asset.startswith(azureml_prefix) else asset
                    if _asset.startswith(CURATED_ENV_PREFIX) or re.match(
                        REGISTRY_VERSION_PATTERN, f"{azureml_prefix}{_asset}"
                    ):
                        return f"{azureml_prefix}{_asset}"

                name, label = parse_name_label(asset)
                # TODO: remove this condition after label is fully supported for all versioned resources
                if label == DEFAULT_LABEL_NAME and azureml_type == AzureMLResourceType.COMPONENT:
                    return LABELLED_RESOURCE_ID_FORMAT.format(
                        self._operation_scope.subscription_id,
                        self._operation_scope.resource_group_name,
                        AZUREML_RESOURCE_PROVIDER,
                        self._operation_scope.workspace_name,
                        azureml_type,
                        name,
                        label,
                    )
                name, version = self._resolve_name_version_from_name_label(asset, azureml_type)
                if not version:
                    name, version = parse_prefixed_name_version(asset)

                if not version:
                    msg = (
                        "Failed to extract version when parsing asset {} of type {} as arm id. "
                        "Version must be provided."
                    )
                    raise ValidationException(
                        message=msg.format(asset, azureml_type),
                        target=ErrorTarget.ASSET,
                        no_personal_data_message=msg.format("", azureml_type),
                        error_category=ErrorCategory.USER_ERROR,
                        error_type=ValidationErrorType.MISSING_FIELD,
                    )
                if self._operation_scope.registry_name:
                    # Short form for env not supported with registry flow except when it's a curated env.
                    # Adding a graceful error message for the scenario
                    if not asset.startswith(CURATED_ENV_PREFIX):
                        msg = (
                            "Use fully qualified name to reference custom environments "
                            "when creating assets in registry. "
                            "The syntax for fully qualified names is "
                            "azureml://registries/azureml/environments/{{env-name}}/versions/{{version}}"
                        )
                        raise ValidationException(
                            message=msg.format(asset, azureml_type),
                            target=ErrorTarget.ASSET,
                            no_personal_data_message=msg.format("", azureml_type),
                            error_category=ErrorCategory.USER_ERROR,
                            error_type=ValidationErrorType.INVALID_VALUE,
                        )

                return VERSIONED_RESOURCE_ID_FORMAT.format(
                    self._operation_scope.subscription_id,
                    self._operation_scope.resource_group_name,
                    AZUREML_RESOURCE_PROVIDER,
                    self._operation_scope.workspace_name,
                    azureml_type,
                    name,
                    version,
                )
            msg = "Unsupported azureml type {} for asset: {}"
            raise ValidationException(
                message=msg.format(azureml_type, asset),
                target=ErrorTarget.ASSET,
                no_personal_data_message=msg.format(azureml_type, ""),
                error_type=ValidationErrorType.INVALID_VALUE,
            )
        if isinstance(asset, Asset):
            try:
                # TODO: once the asset redesign is finished, this logic can be replaced with unified API
                if azureml_type == AzureMLResourceType.CODE and isinstance(asset, Code):
                    result = self._get_code_asset_arm_id(asset, register_asset=register_asset)
                elif azureml_type == AzureMLResourceType.ENVIRONMENT and isinstance(asset, Environment):
                    result = self._get_environment_arm_id(asset, register_asset=register_asset)
                elif azureml_type == AzureMLResourceType.MODEL and isinstance(asset, Model):
                    result = self._get_model_arm_id(asset, register_asset=register_asset)
                elif azureml_type == AzureMLResourceType.DATA and isinstance(asset, Data):
                    result = self._get_data_arm_id(asset, register_asset=register_asset)
                elif azureml_type == AzureMLResourceType.COMPONENT and isinstance(asset, Component):
                    result = self._get_component_arm_id(asset)
                else:
                    msg = "Unsupported azureml type {} for asset: {}"
                    raise ValidationException(
                        message=msg.format(azureml_type, asset),
                        target=ErrorTarget.ASSET,
                        no_personal_data_message=msg.format(azureml_type, ""),
                        error_category=ErrorCategory.USER_ERROR,
                        error_type=ValidationErrorType.INVALID_VALUE,
                    )
            except EmptyDirectoryError as e:
                msg = f"Error creating {azureml_type} asset : {e.message}"
                raise AssetException(
                    message=msg.format(azureml_type, e.message),
                    target=ErrorTarget.ASSET,
                    no_personal_data_message=msg.format(azureml_type, ""),
                    error=e,
                    error_category=ErrorCategory.SYSTEM_ERROR,
                )
            return result
        msg = f"Error creating {azureml_type} asset: must be type Optional[Union[str, Asset]]"
        raise ValidationException(
            message=msg,
            target=ErrorTarget.ASSET,
            no_personal_data_message=msg,
            error_category=ErrorCategory.USER_ERROR,
            error_type=ValidationErrorType.INVALID_VALUE,
        )

    def _get_code_asset_arm_id(self, code_asset: Code, register_asset: bool = True) -> Union[Code, str]:
        try:
            self._validate_datastore_name(code_asset.path)
            if register_asset:
                code_asset = self._code_assets.create_or_update(code_asset)
                return code_asset.id
            sas_info = get_storage_info_for_non_registry_asset(
                service_client=self._code_assets._service_client,
                workspace_name=self._operation_scope.workspace_name,
                name=code_asset.name,
                version=code_asset.version,
                resource_group=self._operation_scope.resource_group_name,
            )
            uploaded_code_asset, _ = _check_and_upload_path(
                artifact=code_asset,
                asset_operations=self._code_assets,
                artifact_type=ErrorTarget.CODE,
                show_progress=self._operation_config.show_progress,
                sas_uri=sas_info["sas_uri"],
                blob_uri=sas_info["blob_uri"],
            )
            uploaded_code_asset._id = get_arm_id_with_version(
                self._operation_scope,
                AzureMLResourceType.CODE,
                code_asset.name,
                code_asset.version,
            )
            return uploaded_code_asset
        except (MlException, HttpResponseError) as e:
            raise e
        except Exception as e:
            raise AssetException(
                message=f"Error with code: {e}",
                target=ErrorTarget.ASSET,
                no_personal_data_message="Error getting code asset",
                error=e,
                error_category=ErrorCategory.SYSTEM_ERROR,
            )

    def _get_environment_arm_id(self, environment: Environment, register_asset: bool = True) -> Union[str, Environment]:
        if register_asset:
            if environment.id:
                return environment.id
            env_response = self._environments.create_or_update(environment)
            return env_response.id
        environment = _check_and_upload_env_build_context(
            environment=environment, operations=self._environments, show_progress=self._operation_config.show_progress
        )
        environment._id = get_arm_id_with_version(
            self._operation_scope,
            AzureMLResourceType.ENVIRONMENT,
            environment.name,
            environment.version,
        )
        return environment

    def _get_model_arm_id(self, model: Model, register_asset: bool = True) -> Union[str, Model]:
        try:
            self._validate_datastore_name(model.path)

            if register_asset:
                if model.id:
                    return model.id
                return self._model.create_or_update(model).id
            uploaded_model, _ = _check_and_upload_path(
                artifact=model,
                asset_operations=self._model,
                artifact_type=ErrorTarget.MODEL,
                show_progress=self._operation_config.show_progress,
            )
            uploaded_model._id = get_arm_id_with_version(
                self._operation_scope,
                AzureMLResourceType.MODEL,
                model.name,
                model.version,
            )
            return uploaded_model
        except (MlException, HttpResponseError) as e:
            raise e
        except Exception as e:
            raise ModelException(
                message=f"Error with model: {e}",
                target=ErrorTarget.MODEL,
                no_personal_data_message="Error getting model",
                error=e,
                error_category=ErrorCategory.SYSTEM_ERROR,
            )

    def _get_data_arm_id(self, data_asset: Data, register_asset: bool = True) -> Union[str, Data]:
        self._validate_datastore_name(data_asset.path)

        if register_asset:
            return self._data.create_or_update(data_asset).id
        data_asset, _ = _check_and_upload_path(
            artifact=data_asset,
            asset_operations=self._data,
            artifact_type=ErrorTarget.DATA,
            show_progress=self._operation_config.show_progress,
        )
        return data_asset

    def _get_component_arm_id(self, component: Component) -> str:
        """If component arm id is already resolved, return the id Or get arm id via remote call, register the component
        if necessary, and FILL BACK the arm id to component to reduce remote call."""
        if not component.id:
            component._id = self._component.create_or_update(
                component, is_anonymous=True, show_progress=self._operation_config.show_progress
            ).id
        return component.id

    def _get_singularity_arm_id_from_full_name(self, singularity: str) -> str:
        match = re.match(SINGULARITY_FULL_NAME_REGEX_FORMAT, singularity)
        subscription_id = match.group("subscription_id")
        resource_group_name = match.group("resource_group_name")
        vc_name = match.group("name")
        arm_id = SINGULARITY_ID_FORMAT.format(subscription_id, resource_group_name, vc_name)
        vc = self._virtual_cluster.get(arm_id)
        return vc["id"]

    def _get_singularity_arm_id_from_short_name(self, singularity: str) -> str:
        match = re.match(SINGULARITY_SHORT_NAME_REGEX_FORMAT, singularity)
        vc_name = match.group("name")
        # below list operation can be time-consuming, may need an optimization on this
        match_vcs = [vc for vc in self._virtual_cluster.list() if vc["name"] == vc_name]
        num_match_vc = len(match_vcs)
        if num_match_vc != 1:
            if num_match_vc == 0:
                msg = "The virtual cluster {} could not be found."
            else:
                msg = "More than one match virtual clusters {} found."
            raise ValidationException(
                message=msg.format(vc_name),
                no_personal_data_message=msg.format(""),
                target=ErrorTarget.COMPUTE,
                error_type=ValidationErrorType.INVALID_VALUE,
            )
        return match_vcs[0]["id"]

    def _resolve_name_version_from_name_label(self, aml_id: str, azureml_type: str) -> Tuple[str, Optional[str]]:
        """Given an AzureML id of the form name@label, resolves the label to the actual ID.

        :param aml_id: AzureML id of the form name@label
        :type aml_id: str
        :param azureml_type: The AzureML resource type. Defined in AzureMLResourceType.
        :type azureml_type: str
        :returns: Returns tuple (name, version) on success, (name@label, None) if resolution fails
        """
        name, label = parse_name_label(aml_id)
        if (
            azureml_type not in AzureMLResourceType.VERSIONED_TYPES
            or azureml_type == AzureMLResourceType.CODE
            or not label
        ):
            return aml_id, None

        return (
            name,
            _resolve_label_to_asset(
                self._operation_container.all_operations[azureml_type],
                name,
                label=label,
            ).version,
        )

    # pylint: disable=unused-argument
    def resolve_azureml_id(self, arm_id: Optional[str] = None, **kwargs) -> str:
        """This function converts ARM id to name or name:version AzureML id. It parses the ARM id and matches the
        subscription Id, resource group name and workspace_name.

        TODO: It is debatable whether this method should be in operation_orchestrator.

        :param arm_id: entity's ARM id, defaults to None
        :type arm_id: str, optional
        :return: AzureML id
        :rtype: str
        """

        if arm_id:
            if not isinstance(arm_id, str):
                msg = "arm_id cannot be resolved: str expected but got {}".format(type(arm_id))
                raise ValidationException(
                    message=msg,
                    no_personal_data_message=msg,
                    target=ErrorTarget.GENERAL,
                    error_type=ValidationErrorType.INVALID_VALUE,
                )
            try:
                arm_id_obj = AMLVersionedArmId(arm_id)
                if arm_id_obj.is_registry_id:
                    return arm_id
                if self._match(arm_id_obj):
                    return VERSIONED_RESOURCE_NAME.format(arm_id_obj.asset_name, arm_id_obj.asset_version)
            except ValidationException:
                pass  # fall back to named arm id
            try:
                arm_id_obj = AMLLabelledArmId(arm_id)
                if self._match(arm_id_obj):
                    return LABELLED_RESOURCE_NAME.format(arm_id_obj.asset_name, arm_id_obj.asset_label)
            except ValidationException:
                pass  # fall back to named arm id
            try:
                arm_id_obj = AMLNamedArmId(arm_id)
                if self._match(arm_id_obj):
                    return arm_id_obj.asset_name
            except ValidationException:
                pass  # fall back to be not a ARM_id
        return arm_id

    def _match(self, id_: Any) -> bool:
        return (
            id_.subscription_id == self._operation_scope.subscription_id
            and id_.resource_group_name == self._operation_scope.resource_group_name
            and id_.workspace_name == self._operation_scope.workspace_name
        )

    def _validate_datastore_name(self, datastore_uri: Optional[Union[str, PathLike]]) -> None:
        if datastore_uri:
            try:
                if isinstance(datastore_uri, str):
                    if datastore_uri.startswith(FILE_PREFIX):
                        datastore_uri = datastore_uri[len(FILE_PREFIX) :]
                    elif datastore_uri.startswith(FOLDER_PREFIX):
                        datastore_uri = datastore_uri[len(FOLDER_PREFIX) :]
                elif isinstance(datastore_uri, PathLike):
                    return

                if datastore_uri.startswith(HTTPS_PREFIX) and datastore_uri.count("/") == 7:
                    # only long-form (i.e. "https://x.blob.core.windows.net/datastore/LocalUpload/guid/x/x")
                    # format includes datastore
                    datastore_name = datastore_uri.split("/")[3]
                elif datastore_uri.startswith(ARM_ID_PREFIX) and not (
                    re.match(MLFLOW_URI_REGEX_FORMAT, datastore_uri) or re.match(JOB_URI_REGEX_FORMAT, datastore_uri)
                ):
                    datastore_name = AzureMLDatastorePathUri(datastore_uri).datastore
                else:
                    # local path
                    return

                if datastore_name.startswith(ARM_ID_PREFIX):
                    datastore_name = datastore_name[len(ARM_ID_PREFIX) :]

                self._datastore_operation.get(datastore_name)
            except ResourceNotFoundError:
                msg = "The datastore {} could not be found in this workspace."
                raise ValidationException(
                    message=msg.format(datastore_name),
                    target=ErrorTarget.DATASTORE,
                    no_personal_data_message=msg.format(""),
                    error_category=ErrorCategory.USER_ERROR,
                    error_type=ValidationErrorType.RESOURCE_NOT_FOUND,
                )
