"""
Internal User Management Endpoints


These are members of a Team on LiteLLM

/user/new
/user/update
/user/delete
"""

import asyncio
import copy
import json
import re
import secrets
import traceback
import uuid
from datetime import datetime, timedelta, timezone
from typing import List, Optional

import fastapi
from fastapi import APIRouter, Depends, Header, HTTPException, Request, status

import litellm
from litellm._logging import verbose_proxy_logger
from litellm.proxy._types import *
from litellm.proxy.auth.user_api_key_auth import user_api_key_auth
from litellm.proxy.management_endpoints.key_management_endpoints import (
    _duration_in_seconds,
    generate_key_helper_fn,
)
from litellm.proxy.management_helpers.utils import (
    add_new_member,
    management_endpoint_wrapper,
)

router = APIRouter()


@router.post(
    "/user/new",
    tags=["Internal User management"],
    dependencies=[Depends(user_api_key_auth)],
    response_model=NewUserResponse,
)
@management_endpoint_wrapper
async def new_user(
    data: NewUserRequest,
):
    """
    Use this to create a new INTERNAL user with a budget.
    Internal Users can access LiteLLM Admin UI to make keys, request access to models.
    This creates a new user and generates a new api key for the new user. The new api key is returned.

    Returns user id, budget + new key.

    Parameters:
    - user_id: Optional[str] - Specify a user id. If not set, a unique id will be generated.
    - user_alias: Optional[str] - A descriptive name for you to know who this user id refers to.
    - teams: Optional[list] - specify a list of team id's a user belongs to.
    - organization_id: Optional[str] - specify the org a user belongs to.
    - user_email: Optional[str] - Specify a user email.
    - send_invite_email: Optional[bool] - Specify if an invite email should be sent.
    - user_role: Optional[str] - Specify a user role - "proxy_admin", "proxy_admin_viewer", "internal_user", "internal_user_viewer", "team", "customer". Info about each role here: `https://github.com/BerriAI/litellm/litellm/proxy/_types.py#L20`
    - max_budget: Optional[float] - Specify max budget for a given user.
    - budget_duration: Optional[str] - Budget is reset at the end of specified duration. If not set, budget is never reset. You can set duration as seconds ("30s"), minutes ("30m"), hours ("30h"), days ("30d").
    - models: Optional[list] - Model_name's a user is allowed to call. (if empty, key is allowed to call all models)
    - tpm_limit: Optional[int] - Specify tpm limit for a given user (Tokens per minute)
    - rpm_limit: Optional[int] - Specify rpm limit for a given user (Requests per minute)
    - auto_create_key: bool - Default=True. Flag used for returning a key as part of the /user/new response

    Returns:
    - key: (str) The generated api key for the user
    - expires: (datetime) Datetime object for when key expires.
    - user_id: (str) Unique user id - used for tracking spend across multiple keys for same user id.
    - max_budget: (float|None) Max budget for given user.
    """
    from litellm.proxy.proxy_server import general_settings, proxy_logging_obj

    data_json = data.json()  # type: ignore
    if "user_id" in data_json and data_json["user_id"] is None:
        data_json["user_id"] = str(uuid.uuid4())
    auto_create_key = data_json.pop("auto_create_key", True)
    if auto_create_key == False:
        data_json["table_name"] = (
            "user"  # only create a user, don't create key if 'auto_create_key' set to False
        )

    response = await generate_key_helper_fn(request_type="user", **data_json)

    # Admin UI Logic
    # if team_id passed add this user to the team
    if data_json.get("team_id", None) is not None:
        from litellm.proxy.management_endpoints.team_endpoints import team_member_add

        await team_member_add(
            data=TeamMemberAddRequest(
                team_id=data_json.get("team_id", None),
                member=Member(
                    user_id=data_json.get("user_id", None),
                    role="user",
                    user_email=data_json.get("user_email", None),
                ),
            ),
            http_request=Request(
                scope={"type": "http", "path": "/user/new"},
            ),
        )

    if data.send_invite_email is True:
        # check if user has setup email alerting
        if "email" not in general_settings.get("alerting", []):
            raise ValueError(
                "Email alerting not setup on config.yaml. Please set `alerting=['email']. \nDocs: https://docs.litellm.ai/docs/proxy/email`"
            )

        event = WebhookEvent(
            event="internal_user_created",
            event_group="internal_user",
            event_message=f"Welcome to LiteLLM Proxy",
            token=response.get("token", ""),
            spend=response.get("spend", 0.0),
            max_budget=response.get("max_budget", 0.0),
            user_id=response.get("user_id", None),
            user_email=response.get("user_email", None),
            team_id=response.get("team_id", "Default Team"),
            key_alias=response.get("key_alias", None),
        )

        # If user configured email alerting - send an Email letting their end-user know the key was created
        asyncio.create_task(
            proxy_logging_obj.slack_alerting_instance.send_key_created_or_user_invited_email(
                webhook_event=event,
            )
        )

    return NewUserResponse(
        key=response.get("token", ""),
        expires=response.get("expires", None),
        max_budget=response["max_budget"],
        user_id=response["user_id"],
        user_role=response.get("user_role", None),
        user_email=response.get("user_email", None),
        teams=response.get("teams", None),
        team_id=response.get("team_id", None),
        metadata=response.get("metadata", None),
        models=response.get("models", None),
        tpm_limit=response.get("tpm_limit", None),
        rpm_limit=response.get("rpm_limit", None),
        budget_duration=response.get("budget_duration", None),
    )


@router.post(
    "/user/auth",
    tags=["Internal User management"],
    dependencies=[Depends(user_api_key_auth)],
)
async def user_auth(request: Request):
    """
    Allows UI ("https://dashboard.litellm.ai/", or self-hosted - os.getenv("LITELLM_HOSTED_UI")) to request a magic link to be sent to user email, for auth to proxy.

    Only allows emails from accepted email subdomains.

    Rate limit: 1 request every 60s.

    Only works, if you enable 'allow_user_auth' in general settings:
    e.g.:
    ```yaml
    general_settings:
        allow_user_auth: true
    ```

    Requirements:
    SMTP server details saved in .env:
    - os.environ["SMTP_HOST"]
    - os.environ["SMTP_PORT"]
    - os.environ["SMTP_USERNAME"]
    - os.environ["SMTP_PASSWORD"]
    - os.environ["SMTP_SENDER_EMAIL"]
    """
    from litellm.proxy.proxy_server import prisma_client, send_email

    data = await request.json()  # type: ignore
    user_email = data["user_email"]
    page_params = data["page"]
    if user_email is None:
        raise HTTPException(status_code=400, detail="User email is none")

    if prisma_client is None:  # if no db connected, raise an error
        raise Exception("No connected db.")

    ### Check if user email in user table
    response = await prisma_client.get_generic_data(
        key="user_email", value=user_email, table_name="users"
    )
    ### if so - generate a 24 hr key with that user id
    if response is not None:
        user_id = response.user_id
        response = await generate_key_helper_fn(
            request_type="key",
            **{"duration": "24hr", "models": [], "aliases": {}, "config": {}, "spend": 0, "user_id": user_id},  # type: ignore
        )
    else:  ### else - create new user
        response = await generate_key_helper_fn(
            request_type="key",
            **{"duration": "24hr", "models": [], "aliases": {}, "config": {}, "spend": 0, "user_email": user_email},  # type: ignore
        )

    base_url = os.getenv("LITELLM_HOSTED_UI", "https://dashboard.litellm.ai/")

    params = {
        "sender_name": "LiteLLM Proxy",
        "receiver_email": user_email,
        "subject": "Your Magic Link",
        "html": f"<strong> Follow this  link, to login:\n\n{base_url}user/?token={response['token']}&user_id={response['user_id']}&page={page_params}</strong>",
    }

    await send_email(**params)
    return "Email sent!"


@router.get(
    "/user/available_roles",
    tags=["Internal User management"],
    include_in_schema=False,
    dependencies=[Depends(user_api_key_auth)],
)
async def ui_get_available_role(
    user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
):
    """
    Endpoint used by Admin UI to show all available roles to assign a user
    return {
        "proxy_admin": {
            "description": "Proxy Admin role",
            "ui_label": "Admin"
        }
    }
    """

    _data_to_return = {}
    for role in LitellmUserRoles:

        # We only show a subset of roles on UI
        if role in [
            LitellmUserRoles.PROXY_ADMIN,
            LitellmUserRoles.PROXY_ADMIN_VIEW_ONLY,
            LitellmUserRoles.INTERNAL_USER,
            LitellmUserRoles.INTERNAL_USER_VIEW_ONLY,
        ]:
            _data_to_return[role.value] = {
                "description": role.description,
                "ui_label": role.ui_label,
            }
    return _data_to_return


@router.get(
    "/user/info",
    tags=["Internal User management"],
    dependencies=[Depends(user_api_key_auth)],
)
@management_endpoint_wrapper
async def user_info(
    user_id: Optional[str] = fastapi.Query(
        default=None, description="User ID in the request parameters"
    ),
    view_all: bool = fastapi.Query(
        default=False,
        description="set to true to View all users. When using view_all, don't pass user_id",
    ),
    page: Optional[int] = fastapi.Query(
        default=0,
        description="Page number for pagination. Only use when view_all is true",
    ),
    page_size: Optional[int] = fastapi.Query(
        default=25,
        description="Number of items per page. Only use when view_all is true",
    ),
    user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
):
    """
    Use this to get user information. (user row + all user key info)

    Example request
    ```
    curl -X GET 'http://localhost:8000/user/info?user_id=krrish7%40berri.ai' \
    --header 'Authorization: Bearer sk-1234'
    ```
    """
    from litellm.proxy.proxy_server import (
        general_settings,
        litellm_master_key_hash,
        prisma_client,
    )

    try:
        if prisma_client is None:
            raise Exception(
                f"Database not connected. Connect a database to your proxy - https://docs.litellm.ai/docs/simple_proxy#managing-auth---virtual-keys"
            )
        ## GET USER ROW ##
        if user_id is not None:
            user_info = await prisma_client.get_data(user_id=user_id)
        elif view_all == True:
            if page is None:
                page = 0
            if page_size is None:
                page_size = 25
            offset = (page) * page_size  # default is 0
            limit = page_size  # default is 10
            user_info = await prisma_client.get_data(
                table_name="user", query_type="find_all", offset=offset, limit=limit
            )
            return user_info
        else:
            user_info = None
        ## GET ALL TEAMS ##
        team_list = []
        team_id_list = []
        # _DEPRECATED_ check if user in 'member' field
        teams_1 = await prisma_client.get_data(
            user_id=user_id, table_name="team", query_type="find_all"
        )

        if teams_1 is not None and isinstance(teams_1, list):
            team_list = teams_1
            for team in teams_1:
                team_id_list.append(team.team_id)

        if user_info is not None:
            # *NEW* get all teams in user 'teams' field
            teams_2 = await prisma_client.get_data(
                team_id_list=user_info.teams, table_name="team", query_type="find_all"
            )

            if teams_2 is not None and isinstance(teams_2, list):
                for team in teams_2:
                    if team.team_id not in team_id_list:
                        team_list.append(team)
                        team_id_list.append(team.team_id)
        elif (
            user_api_key_dict.user_id is not None and user_id is None
        ):  # the key querying the endpoint is the one asking for it's teams
            caller_user_info = await prisma_client.get_data(
                user_id=user_api_key_dict.user_id
            )
            # *NEW* get all teams in user 'teams' field
            if (
                getattr(caller_user_info, "user_role", None)
                == LitellmUserRoles.PROXY_ADMIN
            ):
                teams_2 = await prisma_client.get_data(
                    table_name="team",
                    query_type="find_all",
                    team_id_list=None,
                )
            else:
                teams_2 = await prisma_client.get_data(
                    team_id_list=caller_user_info.teams,
                    table_name="team",
                    query_type="find_all",
                )

            if teams_2 is not None and isinstance(teams_2, list):
                for team in teams_2:
                    if team.team_id not in team_id_list:
                        team_list.append(team)
                        team_id_list.append(team.team_id)

        ## GET ALL KEYS ##
        keys = await prisma_client.get_data(
            user_id=user_id,
            table_name="key",
            query_type="find_all",
            expires=datetime.now(),
        )

        if user_info is None:
            ## make sure we still return a total spend ##
            spend = 0
            for k in keys:
                spend += getattr(k, "spend", 0)
            user_info = {"spend": spend}

        ## REMOVE HASHED TOKEN INFO before returning ##
        returned_keys = []
        for key in keys:
            if (
                key.token == litellm_master_key_hash
                and general_settings.get("disable_master_key_return", False)
                == True  ## [IMPORTANT] used by hosted proxy-ui to prevent sharing master key on ui
            ):
                continue

            try:
                key = key.model_dump()  # noqa
            except:
                # if using pydantic v1
                key = key.dict()
            if (
                "team_id" in key
                and key["team_id"] is not None
                and key["team_id"] != "litellm-dashboard"
            ):
                team_info = await prisma_client.get_data(
                    team_id=key["team_id"], table_name="team"
                )
                team_alias = getattr(team_info, "team_alias", None)
                key["team_alias"] = team_alias
            else:
                key["team_alias"] = "None"
            returned_keys.append(key)

        response_data = {
            "user_id": user_id,
            "user_info": user_info,
            "keys": returned_keys,
            "teams": team_list,
        }
        return response_data
    except Exception as e:
        verbose_proxy_logger.error(
            "litellm.proxy.proxy_server.user_info(): Exception occured - {}".format(
                str(e)
            )
        )
        verbose_proxy_logger.debug(traceback.format_exc())
        if isinstance(e, HTTPException):
            raise ProxyException(
                message=getattr(e, "detail", f"Authentication Error({str(e)})"),
                type=ProxyErrorTypes.auth_error,
                param=getattr(e, "param", "None"),
                code=getattr(e, "status_code", status.HTTP_400_BAD_REQUEST),
            )
        elif isinstance(e, ProxyException):
            raise e
        raise ProxyException(
            message="Authentication Error, " + str(e),
            type=ProxyErrorTypes.auth_error,
            param=getattr(e, "param", "None"),
            code=status.HTTP_400_BAD_REQUEST,
        )


@router.post(
    "/user/update",
    tags=["Internal User management"],
    dependencies=[Depends(user_api_key_auth)],
)
@management_endpoint_wrapper
async def user_update(
    data: UpdateUserRequest,
):
    """
    Example curl 

    ```
    curl --location 'http://0.0.0.0:4000/user/update' \
    --header 'Authorization: Bearer sk-1234' \
    --header 'Content-Type: application/json' \
    --data '{
        "user_id": "test-litellm-user-4",
        "user_role": "proxy_admin_viewer"
    }'

    See below for all params 
    ```
    """
    from litellm.proxy.proxy_server import prisma_client

    try:
        data_json: dict = data.json()
        # get the row from db
        if prisma_client is None:
            raise Exception("Not connected to DB!")

        # get non default values for key
        non_default_values = {}
        for k, v in data_json.items():
            if v is not None and v not in (
                [],
                {},
                0,
            ):  # models default to [], spend defaults to 0, we should not reset these values
                non_default_values[k] = v

        if "budget_duration" in non_default_values:
            duration_s = _duration_in_seconds(
                duration=non_default_values["budget_duration"]
            )
            user_reset_at = datetime.now(timezone.utc) + timedelta(seconds=duration_s)
            non_default_values["budget_reset_at"] = user_reset_at

        ## ADD USER, IF NEW ##
        verbose_proxy_logger.debug("/user/update: Received data = %s", data)
        if data.user_id is not None and len(data.user_id) > 0:
            non_default_values["user_id"] = data.user_id  # type: ignore
            verbose_proxy_logger.debug("In update user, user_id condition block.")
            response = await prisma_client.update_data(
                user_id=data.user_id,
                data=non_default_values,
                table_name="user",
            )
            verbose_proxy_logger.debug(
                f"received response from updating prisma client. response={response}"
            )
        elif data.user_email is not None:
            non_default_values["user_id"] = str(uuid.uuid4())
            non_default_values["user_email"] = data.user_email
            ## user email is not unique acc. to prisma schema -> future improvement
            ### for now: check if it exists in db, if not - insert it
            existing_user_rows = await prisma_client.get_data(
                key_val={"user_email": data.user_email},
                table_name="user",
                query_type="find_all",
            )
            if existing_user_rows is None or (
                isinstance(existing_user_rows, list) and len(existing_user_rows) == 0
            ):
                response = await prisma_client.insert_data(
                    data=non_default_values, table_name="user"
                )
            elif isinstance(existing_user_rows, list) and len(existing_user_rows) > 0:
                for existing_user in existing_user_rows:
                    response = await prisma_client.update_data(
                        user_id=existing_user.user_id,
                        data=non_default_values,
                        table_name="user",
                    )
        return response
        # update based on remaining passed in values
    except Exception as e:
        verbose_proxy_logger.error(
            "litellm.proxy.proxy_server.user_update(): Exception occured - {}".format(
                str(e)
            )
        )
        verbose_proxy_logger.debug(traceback.format_exc())
        if isinstance(e, HTTPException):
            raise ProxyException(
                message=getattr(e, "detail", f"Authentication Error({str(e)})"),
                type=ProxyErrorTypes.auth_error,
                param=getattr(e, "param", "None"),
                code=getattr(e, "status_code", status.HTTP_400_BAD_REQUEST),
            )
        elif isinstance(e, ProxyException):
            raise e
        raise ProxyException(
            message="Authentication Error, " + str(e),
            type=ProxyErrorTypes.auth_error,
            param=getattr(e, "param", "None"),
            code=status.HTTP_400_BAD_REQUEST,
        )


@router.post(
    "/user/request_model",
    tags=["Internal User management"],
    dependencies=[Depends(user_api_key_auth)],
)
async def user_request_model(request: Request):
    """
    Allow a user to create a request to access a model
    """
    from litellm.proxy.proxy_server import prisma_client

    try:
        data_json = await request.json()

        # get the row from db
        if prisma_client is None:
            raise Exception("Not connected to DB!")

        non_default_values = {k: v for k, v in data_json.items() if v is not None}
        new_models = non_default_values.get("models", None)
        user_id = non_default_values.get("user_id", None)
        justification = non_default_values.get("justification", None)

        response = await prisma_client.insert_data(
            data={
                "models": new_models,
                "justification": justification,
                "user_id": user_id,
                "status": "pending",
                "request_id": str(uuid.uuid4()),
            },
            table_name="user_notification",
        )
        return {"status": "success"}
        # update based on remaining passed in values
    except Exception as e:
        verbose_proxy_logger.error(
            "litellm.proxy.proxy_server.user_request_model(): Exception occured - {}".format(
                str(e)
            )
        )
        verbose_proxy_logger.debug(traceback.format_exc())
        if isinstance(e, HTTPException):
            raise ProxyException(
                message=getattr(e, "detail", f"Authentication Error({str(e)})"),
                type=ProxyErrorTypes.auth_error,
                param=getattr(e, "param", "None"),
                code=getattr(e, "status_code", status.HTTP_400_BAD_REQUEST),
            )
        elif isinstance(e, ProxyException):
            raise e
        raise ProxyException(
            message="Authentication Error, " + str(e),
            type=ProxyErrorTypes.auth_error,
            param=getattr(e, "param", "None"),
            code=status.HTTP_400_BAD_REQUEST,
        )


@router.get(
    "/user/get_requests",
    tags=["Internal User management"],
    dependencies=[Depends(user_api_key_auth)],
)
async def user_get_requests():
    """
    Get all "Access" requests made by proxy users, access requests are requests for accessing models
    """
    from litellm.proxy.proxy_server import prisma_client

    try:

        # get the row from db
        if prisma_client is None:
            raise Exception("Not connected to DB!")

        # TODO: Optimize this so we don't read all the data here, eventually move to pagination
        response = await prisma_client.get_data(
            query_type="find_all",
            table_name="user_notification",
        )
        return {"requests": response}
        # update based on remaining passed in values
    except Exception as e:
        verbose_proxy_logger.error(
            "litellm.proxy.proxy_server.user_get_requests(): Exception occured - {}".format(
                str(e)
            )
        )
        verbose_proxy_logger.debug(traceback.format_exc())
        if isinstance(e, HTTPException):
            raise ProxyException(
                message=getattr(e, "detail", f"Authentication Error({str(e)})"),
                type=ProxyErrorTypes.auth_error,
                param=getattr(e, "param", "None"),
                code=getattr(e, "status_code", status.HTTP_400_BAD_REQUEST),
            )
        elif isinstance(e, ProxyException):
            raise e
        raise ProxyException(
            message="Authentication Error, " + str(e),
            type=ProxyErrorTypes.auth_error,
            param=getattr(e, "param", "None"),
            code=status.HTTP_400_BAD_REQUEST,
        )


@router.get(
    "/user/get_users",
    tags=["Internal User management"],
    dependencies=[Depends(user_api_key_auth)],
)
async def get_users(
    role: str = fastapi.Query(
        default=None,
        description="Either 'proxy_admin', 'proxy_viewer', 'app_owner', 'app_user'",
    )
):
    """
    [BETA] This could change without notice. Give feedback - https://github.com/BerriAI/litellm/issues

    Get all users who are a specific `user_role`.

    Used by the UI to populate the user lists.

    Currently - admin-only endpoint.
    """
    from litellm.proxy.proxy_server import prisma_client

    if prisma_client is None:
        raise HTTPException(
            status_code=500,
            detail={"error": f"No db connected. prisma client={prisma_client}"},
        )
    all_users = await prisma_client.get_data(
        table_name="user", query_type="find_all", key_val={"user_role": role}
    )

    return all_users


@router.post(
    "/user/delete",
    tags=["Internal User management"],
    dependencies=[Depends(user_api_key_auth)],
)
@management_endpoint_wrapper
async def delete_user(
    data: DeleteUserRequest,
    user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
    litellm_changed_by: Optional[str] = Header(
        None,
        description="The litellm-changed-by header enables tracking of actions performed by authorized users on behalf of other users, providing an audit trail for accountability",
    ),
):
    """
    delete user and associated user keys

    ```
    curl --location 'http://0.0.0.0:8000/team/delete' \

    --header 'Authorization: Bearer sk-1234' \

    --header 'Content-Type: application/json' \

    --data-raw '{
        "user_ids": ["45e3e396-ee08-4a61-a88e-16b3ce7e0849"]
    }'
    ```

    Parameters:
    - user_ids: List[str] - The list of user id's to be deleted.
    """
    from litellm.proxy.proxy_server import (
        _duration_in_seconds,
        create_audit_log_for_update,
        litellm_proxy_admin_name,
        prisma_client,
        user_api_key_cache,
    )

    if prisma_client is None:
        raise HTTPException(status_code=500, detail={"error": "No db connected"})

    if data.user_ids is None:
        raise HTTPException(status_code=400, detail={"error": "No user id passed in"})

    # check that all teams passed exist
    for user_id in data.user_ids:
        user_row = await prisma_client.db.litellm_usertable.find_unique(
            where={"user_id": user_id}
        )

        if user_row is None:
            raise HTTPException(
                status_code=404,
                detail={"error": f"User not found, passed user_id={user_id}"},
            )
        else:
            # Enterprise Feature - Audit Logging. Enable with litellm.store_audit_logs = True
            # we do this after the first for loop, since first for loop is for validation. we only want this inserted after validation passes
            if litellm.store_audit_logs is True:
                # make an audit log for each team deleted
                _user_row = user_row.json(exclude_none=True)

                asyncio.create_task(
                    create_audit_log_for_update(
                        request_data=LiteLLM_AuditLogs(
                            id=str(uuid.uuid4()),
                            updated_at=datetime.now(timezone.utc),
                            changed_by=litellm_changed_by
                            or user_api_key_dict.user_id
                            or litellm_proxy_admin_name,
                            changed_by_api_key=user_api_key_dict.api_key,
                            table_name=LitellmTableNames.USER_TABLE_NAME,
                            object_id=user_id,
                            action="deleted",
                            updated_values="{}",
                            before_value=_user_row,
                        )
                    )
                )

    # End of Audit logging

    ## DELETE ASSOCIATED KEYS
    await prisma_client.db.litellm_verificationtoken.delete_many(
        where={"user_id": {"in": data.user_ids}}
    )

    ## DELETE ASSOCIATED INVITATION LINKS
    await prisma_client.db.litellm_invitationlink.delete_many(
        where={"user_id": {"in": data.user_ids}}
    )

    ## DELETE USERS
    deleted_users = await prisma_client.db.litellm_usertable.delete_many(
        where={"user_id": {"in": data.user_ids}}
    )

    return deleted_users
