"""

    AUTHOR:

        Khushal P Soonderji

    DATE:

        Saturday, 21st Dec., 2024

    OBJECTIVE:

        To receive callbacks (webhooks) from stockbrokers for trading API integrations.

    REFERENCES:

        N/A

    DOWNLOADS:

        N/A

    NOTES:

        N/A

"""


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                   IMPORT                                                      ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# To make sibling directories accessible for imports:
import sys
sys.path.append(".")
sys.path.append("..")

# For using Quart:
from quart import Blueprint, current_app, g, request, render_template

# My utils:
from utils_v2.string import json
from utils_v2.logging.context import AsyncLoggerContext
from utils_v2.api.codes import StatusCodes, HttpCodes
from utils_v2.api.response import ResponseModel
from utils_v2.api.async_quart import (
    set_api_version,
    read_input,
    get_session_info,
    log_request_to_mongo,
    log_chain_to_mongo,
    should_not_be_under_maintenance,
    only_whitelisted_ips,
    limit_rate,
    validate_input,
    handle_cancelled_request,
    handle_failed_request
)

# GMail-related utils:
from utils_v2.goog.controllers.gmail.gmail_client import SCOPES_GMAIL_MAIL_MANAGEMENT

# Data Models:
from models.core.auth_token import CoreAuthTokenModel

# Common:
from shared import constants

# For asynchronous activities:
import asyncio


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                           MACROS / ONE-TIME INIT                                              ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# Related to Quart:
trading_oauth_callback_bp = Blueprint("trading_cb", __name__)


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                VARIABLES                                                      ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# --- Nothing Yet


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                  FUNCTIONS                                                    ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


@trading_oauth_callback_bp.record_once
def init(blueprint_setup_state):

    # This gets called when the blueprint is registered.
    # Consider this to be a one-time setup for the whole blueprint:
    pass


# ---------------------------------------------------------------------------------------------------------------------


async def handle_auth_exception():

    print("Hi! Cleaning up...")
    return await render_template(
        "/finstitutions/trading/oauth/oauth_failure_v2.html",
        client = g.client_label,
        failure_hint = (
            f"Something went wrong (E). "
            f"Please use log-id <b>'{g.log_id}'</b> to check with the support team."
        )
    )


# ---------------------------------------------------------------------------------------------------------------------


@trading_oauth_callback_bp.route("/callback/<trading_client>", methods = ["POST", "GET"])
@set_api_version(api_version = "1.0.0")
@read_input(sanitize_headers = False, sanitize_data = False)
@log_request_to_mongo(
    attr_name = "logs_mongo",
    project = constants.PROJECT_NAME,
    log_type = constants.MODULE_NAME,
    operation = "trdngOauthCllBckApi",
    log_input = True,
    log_output = True,
    sensitive_keys = None
)
@log_chain_to_mongo(attr_name = "logs_mongo")
@should_not_be_under_maintenance(attr_name = "is_under_maintenance")
@handle_cancelled_request()
@handle_failed_request(cleanup_coro = handle_auth_exception)
async def trading_oauth_callback(
        trading_client: str = None,
        inbound_headers: dict = None,
        inbound_data: dict = None,
        inbound_files: dict = None,
        **kwargs
):

    """
    This endpoint gets triggered by the stockbroker's servers to let you know when a user accepted or rejected an
    authorization request.
    :param trading_client: The name of the stockbroker that you have received the callback from.
    :param inbound_headers: auto-extracted by the decorators.
    :param inbound_data: auto-extracted by the decorators.
    :param inbound_files: auto-extracted by the decorators.
    :param kwargs: Any number of extra inputs supplied by the decorators.
    :return: A standard response structure.
    """
    # ┓┏     ┓┓    ┓┏    •  ┓ ┓
    # ┣┫┏┓┏┓┏┫┃┏┓  ┃┃┏┓┏┓┓┏┓┣┓┃┏┓┏
    # ┛┗┗┻┛┗┗┻┗┗   ┗┛┗┻┛ ┗┗┻┗┛┗┗ ┛

    # Store needed values in 'g':
    g.log_id = kwargs.get("log_id")
    g.client_label = "Zerodha (Kite)"

    # Start by assuming failure:
    success = None

    # ┏┓      ┏┓       ┓┓     ┓┏┓•
    # ┣ ┏┓┏┓  ┏┛┏┓┏┓┏┓┏┫┣┓┏┓  ┃┫ ┓╋┏┓
    # ┻ ┗┛┛   ┗┛┗ ┛ ┗┛┗┻┛┗┗┻  ┛┗┛┗┗┗

    if trading_client == "zerodha":
        success = await current_app.zerodha_kite_controller.handle_authorization_callback(
            sql_conn = current_app.sql_writer,
            mongo_data_conn = current_app.data_mongo,
            inbound_data = inbound_data
        )

    # ┳┓
    # ┣┫┏┓┏┏┓┏┓┏┓┏┏┓
    # ┛┗┗ ┛┣┛┗┛┛┗┛┗
    #      ┛

    # # No valid client:
    # if success is None: return ResponseModel(
    #     status_code = StatusCodes.FAILED,
    #     http_code = HttpCodes.BAD_REQUEST,
    #     message = f"Invalid/unimplemented client '{trading_client}'."
    # )
    #
    # # When the client was valid:
    # return ResponseModel(
    #     status_code = StatusCodes.OK if success else StatusCodes.FAILED,
    #     http_code = HttpCodes.SUCCESS if success else HttpCodes.INTERNAL_SERVER_ERROR,
    # )

    # No valid client:
    if success is None: return await render_template(
        "/finstitutions/trading/oauth/oauth_failure_v2.html",
        client = g.client_label,
        failure_hint = (
            f"Invalid client '{g.client_label}' selected. "
            f"Please use log-id '{g.log_id}' to check with the support team."
        )
    )

    # Successful auth:
    if success: return await render_template(
        "/finstitutions/trading/oauth/oauth_success_v2.html",
        client = g.client_label
    )

    # Failed auth:
    if success is None: return await render_template(
        "/finstitutions/trading/oauth/oauth_failure_v2.html",
        client = g.client_label,
        failure_hint = (
            f"Something went wrong (NE). "
            f"Please use log-id '{g.log_id}' to check with the support team."
        )
    )


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                               MAIN PROGRAM                                                    ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


if __name__ == "__main__":

    pass