from flask import Flask, request, json, Blueprint, current_app
from sqlite3 import Connection
from typing import Any
from tlapbot.db import get_db
from tlapbot.owncast_requests import send_chat
from tlapbot.owncast_helpers import (add_user_to_database, change_display_name,
        read_users_points, remove_duplicate_usernames)
from tlapbot.help_message import send_help
from tlapbot.redeems_handler import handle_redeem
from tlapbot.poll_handler import handle_poll_vote


bp = Blueprint('owncast_webhooks', __name__)


@bp.route('/owncastWebhook', methods=['POST'])
def owncast_webhook() -> Any | None:
    """Reads webhook json -- adds new users, removes duplicate usernames,
    handles name changes and chat messages with commands.
    Returns the 'data' json from the request."""
    data: Any | None = request.json
    db: Connection = get_db()

    # Make sure user is in db before doing anything else.
    if data["type"] in ["CHAT", "NAME_CHANGED", "USER_JOINED"]:
        user_id = data["eventData"]["user"]["id"]
        display_name = data["eventData"]["user"]["displayName"]
        add_user_to_database(db, user_id, display_name)

    if data["type"] == "USER_JOINED":
        if data["eventData"]["user"]["authenticated"]:
            remove_duplicate_usernames(db, user_id, display_name)
    elif data["type"] == "NAME_CHANGE":
        user_id = data["eventData"]["user"]["id"]
        new_name = data["eventData"]["newName"]
        change_display_name(db, user_id, new_name)
        if data["eventData"]["user"]["authenticated"]:
            remove_duplicate_usernames(db, user_id, new_name)
    elif data["type"] == "CHAT":
        if not current_app.config['PASSIVE']:
            prefix = current_app.config['PREFIX']
            user_id = data["eventData"]["user"]["id"]
            display_name = data["eventData"]["user"]["displayName"]
            current_app.logger.debug(f'New chat message from {display_name}:')
            current_app.logger.debug(f'{data["eventData"]["rawBody"]}')
            if data["eventData"]["rawBody"].startswith(f"{prefix}help"):
                send_help()
            elif data["eventData"]["rawBody"].startswith(f"{prefix}points"):
                points = read_users_points(db, user_id)
                if points is None:
                    send_chat("Error reading points.")
                else:
                    send_chat(f"{display_name}'s points: {points}")
            elif data["eventData"]["rawBody"].startswith(f"{prefix}name_update"):
                # Forces name update in case bot didn't catch the NAME_CHANGE
                # event. Also removes saved usernames from users with same name
                # if user is authenticated.
                change_display_name(db, user_id, display_name)
                if data["eventData"]["user"]["authenticated"]:
                    remove_duplicate_usernames(db, user_id, display_name)
            elif data["eventData"]["rawBody"].startswith(f"{prefix}vote"):
                handle_poll_vote(data["eventData"]["rawBody"], user_id)
            elif data["eventData"]["rawBody"].startswith(prefix):
                handle_redeem(data["eventData"]["rawBody"], user_id)
    return data