#  SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#  SPDX-License-Identifier: Apache-2.0
#  #
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#  #
#  http://www.apache.org/licenses/LICENSE-2.0
#  #
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
from __future__ import annotations

import json
import logging
import os
import typing as t
from http import HTTPStatus

import bentoml.deployment
import click
import rich
import rich.style
import yaml
from bentoml._internal.cloud.base import Spinner
from bentoml._internal.cloud.deployment import Deployment, DeploymentConfigParameters
from bentoml._internal.cloud.schemas.modelschemas import DeploymentStrategy
from bentoml._internal.configuration.containers import BentoMLContainer
from bentoml._internal.utils import add_experimental_docstring
from bentoml.exceptions import BentoMLException, CLIException
from bentoml_cli.utils import BentoMLCommandGroup
from rich.console import Console
from rich.syntax import Syntax
from rich.table import Table
from simple_di import Provide, inject

logger = logging.getLogger("dynamo.deployment")

if t.TYPE_CHECKING:
    from bentoml._internal.cloud import BentoCloudClient

    TupleStrAny = tuple[str, ...]
else:
    TupleStrAny = tuple


def raise_deployment_config_error(err: BentoMLException, action: str) -> t.NoReturn:
    if err.error_code == HTTPStatus.UNAUTHORIZED:
        raise BentoMLException(
            f"{err}\n* BentoCloud API token is required for authorization. Run `bentoml cloud login` command to login"
        ) from None
    raise BentoMLException(
        f"Failed to {action} deployment due to invalid configuration: {err}"
    ) from None


def convert_env_to_dict(env: tuple[str] | None) -> list[dict[str, str]] | None:
    if env is None:
        return None
    collected_envs: list[dict[str, str]] = []
    if env:
        for item in env:
            if "=" in item:
                name, value = item.split("=", 1)
            else:
                name = item
                if name not in os.environ:
                    raise CLIException(f"Environment variable {name} not found")
                value = os.environ[name]
            collected_envs.append({"name": name, "value": value})
    return collected_envs


@click.command(name="deploy")
@click.argument(
    "bento",
    type=click.STRING,
    required=False,
)
@click.option(
    "-n",
    "--name",
    type=click.STRING,
    help="Deployment name",
)
@click.option(
    "--cluster",
    type=click.STRING,
    help="Name of the cluster",
)
@click.option(
    "--access-authorization",
    type=click.BOOL,
    help="Enable access authorization",
)
@click.option(
    "--scaling-min",
    type=click.INT,
    help="Minimum scaling value",
)
@click.option(
    "--scaling-max",
    type=click.INT,
    help="Maximum scaling value",
)
@click.option(
    "--instance-type",
    type=click.STRING,
    help="Type of instance",
)
@click.option(
    "--strategy",
    type=click.Choice(
        [deployment_strategy.value for deployment_strategy in DeploymentStrategy]
    ),
    help="Deployment strategy",
)
@click.option(
    "--env",
    type=click.STRING,
    help="List of environment variables pass by --env key[=value] --env ...",
    multiple=True,
)
@click.option(
    "--secret",
    type=click.STRING,
    help="List of secret names pass by --secret name1, --secret name2, ...",
    multiple=True,
)
@click.option(
    "-f",
    "--config-file",
    type=click.File(),
    help="Configuration file path",
    default=None,
)
@click.option(
    "--config-dict",
    type=click.STRING,
    help="Configuration json string",
    default=None,
)
@click.option(
    "--wait/--no-wait",
    type=click.BOOL,
    is_flag=True,
    help="Do not wait for deployment to be ready",
    default=True,
)
@click.option(
    "--timeout",
    type=click.INT,
    default=3600,
    help="Timeout for deployment to be ready in seconds",
)
@add_experimental_docstring
def deploy_command(
    bento: str | None,
    name: str | None,
    cluster: str | None,
    access_authorization: bool | None,
    scaling_min: int | None,
    scaling_max: int | None,
    instance_type: str | None,
    strategy: str | None,
    env: tuple[str] | None,
    secret: tuple[str] | None,
    config_file: str | t.TextIO | None,
    config_dict: str | None,
    wait: bool,
    timeout: int,
) -> None:
    """Create a deployment on BentoCloud.

    \b
    Create a deployment using parameters, or using config yaml file.
    """
    create_deployment(
        bento=bento,
        name=name,
        cluster=cluster,
        access_authorization=access_authorization,
        scaling_min=scaling_min,
        scaling_max=scaling_max,
        instance_type=instance_type,
        strategy=strategy,
        env=env,
        secret=secret,
        config_file=config_file,
        config_dict=config_dict,
        wait=wait,
        timeout=timeout,
    )


output_option = click.option(
    "-o",
    "--output",
    type=click.Choice(["yaml", "json"]),
    default="yaml",
    help="Display the output of this command.",
)


def shared_decorator(
    f: t.Callable[..., t.Any] | None = None,
) -> t.Callable[..., t.Any]:
    def decorate(f: t.Callable[..., t.Any]) -> t.Callable[..., t.Any]:
        options = [
            click.option(
                "--cluster",
                type=click.STRING,
                default=None,
                help="Name of the cluster.",
            ),
        ]
        for opt in reversed(options):
            f = opt(f)
        return f

    if f:
        return decorate(f)
    else:
        return decorate


def build_deployment_command() -> click.Group:
    @click.group(name="deployment", cls=BentoMLCommandGroup)
    @add_experimental_docstring
    def deployment_command():
        """Deploy Dynamo applications to Kubernetes cluster"""

    @deployment_command.command()
    @shared_decorator()
    @click.argument(
        "name",
        type=click.STRING,
        required=False,
    )
    @click.option(
        "--bento",
        type=click.STRING,
        help="Bento name or path to Bento project directory",
    )
    @click.option(
        "--access-authorization",
        type=click.BOOL,
        help="Enable access authorization",
    )
    @click.option(
        "--scaling-min",
        type=click.INT,
        help="Minimum scaling value",
    )
    @click.option(
        "--scaling-max",
        type=click.INT,
        help="Maximum scaling value",
    )
    @click.option(
        "--instance-type",
        type=click.STRING,
        help="Type of instance",
    )
    @click.option(
        "--strategy",
        type=click.Choice(
            [deployment_strategy.value for deployment_strategy in DeploymentStrategy]
        ),
        help="Deployment strategy",
    )
    @click.option(
        "--env",
        type=click.STRING,
        help="List of environment variables pass by --env key[=value] --env ...",
        multiple=True,
    )
    @click.option(
        "--secret",
        type=click.STRING,
        help="List of secret names pass by --secret name1, --secret name2, ...",
        multiple=True,
    )
    @click.option(
        "-f",
        "--config-file",
        type=click.File(),
        help="Configuration file path, mututally exclusive with other config options",
        default=None,
    )
    @click.option(
        "--config-dict",
        type=click.STRING,
        help="Configuration json string",
        default=None,
    )
    @inject
    def update(  # type: ignore
        name: str | None,
        cluster: str | None,
        bento: str | None,
        access_authorization: bool | None,
        scaling_min: int | None,
        scaling_max: int | None,
        instance_type: str | None,
        strategy: str | None,
        env: tuple[str] | None,
        secret: tuple[str] | None,
        config_file: t.TextIO | None,
        config_dict: str | None,
        _cloud_client: BentoCloudClient = Provide[BentoMLContainer.bentocloud_client],
    ) -> None:
        """Update a deployment on BentoCloud.

        \b
        A deployment can be updated using parameters, or using config yaml file.
        You can also update bento by providing a project path or existing bento.
        """
        cfg_dict = None
        if config_dict is not None and config_dict != "":
            cfg_dict = json.loads(config_dict)
        config_params = DeploymentConfigParameters(
            name=name,
            bento=bento,
            cluster=cluster,
            access_authorization=access_authorization,
            scaling_max=scaling_max,
            scaling_min=scaling_min,
            instance_type=instance_type,
            strategy=strategy,
            envs=convert_env_to_dict(env),
            secrets=list(secret) if secret is not None else None,
            config_file=config_file,
            config_dict=cfg_dict,
            cli=True,
        )
        try:
            config_params.verify(create=False)
        except BentoMLException as e:
            raise_deployment_config_error(e, "update")
        deployment_info = _cloud_client.deployment.update(
            deployment_config_params=config_params
        )

        rich.print(
            f"Deployment [green]'{deployment_info.name}'[/] updated successfully."
        )

    @deployment_command.command()
    @click.argument(
        "bento",
        type=click.STRING,
        required=False,
    )
    @click.option(
        "-n",
        "--name",
        type=click.STRING,
        help="Deployment name",
    )
    @click.option(
        "--cluster",
        type=click.STRING,
        help="Name of the cluster",
    )
    @click.option(
        "--access-authorization",
        type=click.BOOL,
        help="Enable access authorization",
    )
    @click.option(
        "--scaling-min",
        type=click.INT,
        help="Minimum scaling value",
    )
    @click.option(
        "--scaling-max",
        type=click.INT,
        help="Maximum scaling value",
    )
    @click.option(
        "--instance-type",
        type=click.STRING,
        help="Type of instance",
    )
    @click.option(
        "--strategy",
        type=click.Choice(
            [deployment_strategy.value for deployment_strategy in DeploymentStrategy]
        ),
        help="Deployment strategy",
    )
    @click.option(
        "--env",
        type=click.STRING,
        help="List of environment variables pass by --env key[=value] --env ...",
        multiple=True,
    )
    @click.option(
        "--secret",
        type=click.STRING,
        help="List of secret names pass by --secret name1, --secret name2, ...",
        multiple=True,
    )
    @click.option(
        "-f",
        "--config-file",
        type=click.File(),
        help="Configuration file path",
        default=None,
    )
    @click.option(
        "-f",
        "--config-file",
        help="Configuration file path, mututally exclusive with other config options",
        default=None,
    )
    @click.option(
        "--config-dict",
        type=click.STRING,
        help="Configuration json string",
        default=None,
    )
    @inject
    def apply(  # type: ignore
        bento: str | None,
        name: str | None,
        cluster: str | None,
        access_authorization: bool | None,
        scaling_min: int | None,
        scaling_max: int | None,
        instance_type: str | None,
        strategy: str | None,
        env: tuple[str] | None,
        secret: tuple[str] | None,
        config_file: str | t.TextIO | None,
        config_dict: str | None,
        _cloud_client: BentoCloudClient = Provide[BentoMLContainer.bentocloud_client],
    ) -> None:
        """Apply a deployment on BentoCloud.

        \b
        A deployment can be applied using config yaml file.
        """
        cfg_dict = None
        if config_dict is not None and config_dict != "":
            cfg_dict = json.loads(config_dict)
        config_params = DeploymentConfigParameters(
            name=name,
            bento=bento,
            cluster=cluster,
            access_authorization=access_authorization,
            scaling_max=scaling_max,
            scaling_min=scaling_min,
            instance_type=instance_type,
            strategy=strategy,
            envs=convert_env_to_dict(env),
            secrets=list(secret) if secret is not None else None,
            config_file=config_file,
            config_dict=cfg_dict,
            cli=True,
        )
        try:
            config_params.verify(create=False)
        except BentoMLException as e:
            raise_deployment_config_error(e, "apply")
        deployment_info = _cloud_client.deployment.apply(
            deployment_config_params=config_params
        )

        rich.print(
            f"Deployment [green]'{deployment_info.name}'[/] applied successfully."
        )

    @deployment_command.command()
    @click.argument(
        "bento",
        type=click.STRING,
        required=False,
    )
    @click.option(
        "-n",
        "--name",
        type=click.STRING,
        help="Deployment name",
    )
    @click.option(
        "--cluster",
        type=click.STRING,
        help="Name of the cluster",
    )
    @click.option(
        "--access-authorization",
        type=click.BOOL,
        help="Enable access authorization",
    )
    @click.option(
        "--scaling-min",
        type=click.INT,
        help="Minimum scaling value",
    )
    @click.option(
        "--scaling-max",
        type=click.INT,
        help="Maximum scaling value",
    )
    @click.option(
        "--instance-type",
        type=click.STRING,
        help="Type of instance",
    )
    @click.option(
        "--strategy",
        type=click.Choice(
            [deployment_strategy.value for deployment_strategy in DeploymentStrategy]
        ),
        help="Deployment strategy",
    )
    @click.option(
        "--env",
        type=click.STRING,
        help="List of environment variables pass by --env key[=value] --env ...",
        multiple=True,
    )
    @click.option(
        "--secret",
        type=click.STRING,
        help="List of secret names pass by --secret name1, --secret name2, ...",
        multiple=True,
    )
    @click.option(
        "-f",
        "--config-file",
        type=click.File(),
        help="Configuration file path",
        default=None,
    )
    @click.option(
        "--config-dict",
        type=click.STRING,
        help="Configuration json string",
        default=None,
    )
    @click.option(
        "--wait/--no-wait",
        type=click.BOOL,
        is_flag=True,
        help="Do not wait for deployment to be ready",
        default=True,
    )
    @click.option(
        "--timeout",
        type=click.INT,
        default=3600,
        help="Timeout for deployment to be ready in seconds",
    )
    def create(
        bento: str | None,
        name: str | None,
        cluster: str | None,
        access_authorization: bool | None,
        scaling_min: int | None,
        scaling_max: int | None,
        instance_type: str | None,
        strategy: str | None,
        env: tuple[str] | None,
        secret: tuple[str] | None,
        config_file: str | t.TextIO | None,
        config_dict: str | None,
        wait: bool,
        timeout: int,
    ) -> None:
        """Create a deployment on BentoCloud.

        \b
        Create a deployment using parameters, or using config yaml file.
        """
        create_deployment(
            bento=bento,
            name=name,
            cluster=cluster,
            access_authorization=access_authorization,
            scaling_min=scaling_min,
            scaling_max=scaling_max,
            instance_type=instance_type,
            strategy=strategy,
            env=env,
            secret=secret,
            config_file=config_file,
            config_dict=config_dict,
            wait=wait,
            timeout=timeout,
        )

    @deployment_command.command()
    @shared_decorator
    @click.argument(
        "name",
        type=click.STRING,
        required=True,
    )
    @output_option
    def get(  # type: ignore
        name: str,
        cluster: str | None,
        output: t.Literal["json", "default"],
    ) -> None:
        """Get a deployment on BentoCloud."""
        d = bentoml.deployment.get(name, cluster=cluster)
        if output == "json":
            info = json.dumps(d.to_dict(), indent=2, default=str)
            rich.print_json(info)
        else:
            info = yaml.dump(d.to_dict(), indent=2, sort_keys=False)
            rich.print(Syntax(info, "yaml", background_color="default"))

    @deployment_command.command()
    @shared_decorator
    @click.argument(
        "name",
        type=click.STRING,
        required=True,
    )
    @click.option(
        "--wait", is_flag=True, help="Wait for the deployment to be terminated"
    )
    def terminate(name: str, cluster: str | None, wait: bool) -> None:  # type: ignore
        """Terminate a deployment on BentoCloud."""
        bentoml.deployment.terminate(name, cluster=cluster, wait=wait)
        rich.print(f"Deployment [green]'{name}'[/] terminated successfully.")

    @deployment_command.command()
    @click.argument(
        "name",
        type=click.STRING,
        required=True,
    )
    @shared_decorator
    def delete(name: str, cluster: str | None) -> None:  # type: ignore
        """Delete a deployment on BentoCloud."""
        bentoml.deployment.delete(name, cluster=cluster)
        rich.print(f"Deployment [green]'{name}'[/] deleted successfully.")

    @deployment_command.command(name="list")
    @click.option(
        "--cluster", type=click.STRING, default=None, help="Name of the cluster."
    )
    @click.option(
        "--search", type=click.STRING, default=None, help="Search for list request."
    )
    @click.option(
        "-o",
        "--output",
        help="Display the output of this command.",
        type=click.Choice(["json", "yaml", "table"]),
        default="table",
    )
    @click.option(
        "--label",
        "labels",
        type=click.STRING,
        multiple=True,
        default=None,
        help="Filter deployments by label(s).",
        metavar="KEY=VALUE",
    )
    def list_command(  # type: ignore
        cluster: str | None,
        search: str | None,
        labels: tuple[str, ...] | None,
        output: t.Literal["json", "yaml", "table"],
    ) -> None:
        """List existing deployments on BentoCloud."""
        if labels is not None:
            # For labels like ["env=prod", "team=infra"]
            # This will output: "label:env=prod label:team=infra"
            labels_query = " ".join(f"label:{label}" for label in labels)

        try:
            d_list = bentoml.deployment.list(
                cluster=cluster, search=search, q=labels_query
            )
        except BentoMLException as e:
            raise_deployment_config_error(e, "list")
        res: list[dict[str, t.Any]] = [d.to_dict() for d in d_list]
        if output == "table":
            table = Table(box=None, expand=True)
            table.add_column("Deployment", overflow="fold")
            table.add_column("created_at", overflow="fold")
            table.add_column("Bento", overflow="fold")
            table.add_column("Status", overflow="fold")
            table.add_column("Region", overflow="fold")
            for info in d_list:
                table.add_row(
                    info.name,
                    info.created_at,
                    info.get_bento(refetch=False),
                    info.get_status(refetch=False).status,
                    info.cluster,
                )
            rich.print(table)
        elif output == "json":
            info = json.dumps(res, indent=2, default=str)
            rich.print_json(info)
        else:
            info = yaml.dump(res, indent=2, sort_keys=False)
            rich.print(Syntax(info, "yaml", background_color="default"))

    @deployment_command.command()
    @click.option(
        "--cluster", type=click.STRING, default=None, help="Name of the cluster."
    )
    @click.option(
        "-o",
        "--output",
        help="Display the output of this command.",
        type=click.Choice(["json", "yaml", "table"]),
        default="table",
    )
    @inject
    def list_instance_types(  # type: ignore
        cluster: str | None,
        output: t.Literal["json", "yaml", "table"],
        _cloud_client: BentoCloudClient = Provide[BentoMLContainer.bentocloud_client],
    ) -> None:
        """List existing instance types in cluster on BentoCloud."""
        try:
            d_list = _cloud_client.deployment.list_instance_types(cluster=cluster)
        except BentoMLException as e:
            raise_deployment_config_error(e, "list_instance_types")
        res: list[dict[str, t.Any]] = [d.to_dict() for d in d_list]
        if output == "table":
            table = Table(box=None, expand=True)
            table.add_column("Name", overflow="fold")
            table.add_column("Price", overflow="fold")
            table.add_column("CPU", overflow="fold")
            table.add_column("Memory", overflow="fold")
            table.add_column("GPU", overflow="fold")
            table.add_column("GPU Type", overflow="fold")
            for info in d_list:
                table.add_row(
                    info.name,
                    info.price,
                    info.cpu,
                    info.memory,
                    info.gpu,
                    info.gpu_type,
                )
            rich.print(table)
        elif output == "json":
            info = json.dumps(res, indent=2, default=str)
            rich.print_json(info)
        else:
            info = yaml.dump(res, indent=2, sort_keys=False)
            rich.print(Syntax(info, "yaml", background_color="default"))

    return deployment_command


deployment_command = build_deployment_command()


@inject
def create_deployment(
    bento: str | None = None,
    name: str | None = None,
    cluster: str | None = None,
    access_authorization: bool | None = None,
    scaling_min: int | None = None,
    scaling_max: int | None = None,
    instance_type: str | None = None,
    strategy: str | None = None,
    env: tuple[str] | None = None,
    secret: tuple[str] | None = None,
    config_file: str | t.TextIO | None = None,
    config_dict: str | None = None,
    wait: bool = True,
    timeout: int = 3600,
    dev: bool = False,
    _cloud_client: BentoCloudClient = Provide[BentoMLContainer.bentocloud_client],
) -> Deployment:
    cfg_dict = None
    if config_dict is not None and config_dict != "":
        cfg_dict = json.loads(config_dict)

    config_params = DeploymentConfigParameters(
        name=name,
        bento=bento,
        cluster=cluster,
        access_authorization=access_authorization,
        scaling_max=scaling_max,
        scaling_min=scaling_min,
        instance_type=instance_type,
        strategy=strategy,
        envs=convert_env_to_dict(env),
        secrets=list(secret) if secret is not None else None,
        config_file=config_file,
        config_dict=cfg_dict,
        cli=True,
        dev=dev,
    )

    try:
        config_params.verify()
    except BentoMLException as e:
        raise_deployment_config_error(e, "create")

    console = Console(highlight=False)
    with Spinner(console=console) as spinner:
        spinner.update("Creating deployment on BentoCloud")
        deployment = _cloud_client.deployment.create(
            deployment_config_params=config_params
        )
        spinner.log(
            f':white_check_mark: Created deployment "{deployment.name}" in cluster "{deployment.cluster}"'
        )
        spinner.log(f":laptop_computer: View Dashboard: {deployment.admin_console}")
        if wait:
            spinner.update(
                "[bold blue]Waiting for deployment to be ready, you can use --no-wait to skip this process[/]",
            )
            retcode = deployment.wait_until_ready(timeout=timeout, spinner=spinner)
            if retcode != 0:
                raise SystemExit(retcode)
        return deployment
