function.py

import discord, json, os, copy

from discord.ext import commands
from datetime import datetime
from time import strptime
from io import BytesIO
from typing import Optional, Union, Dict, Any
from addons import Settings, TOKENS

from motor.motor_asyncio import (
    AsyncIOMotorClient,
    AsyncIOMotorCollection,
)

ROOT_DIR = os.path.dirname(os.path.abspath(__file__))

if not os.path.exists(os.path.join(ROOT_DIR, "settings.json")):
    raise Exception("Settings file not set!")

#--------------- Cache Var ---------------
tokens: TOKENS = TOKENS()
settings: Settings

MONGO_DB: AsyncIOMotorClient
SETTINGS_DB: AsyncIOMotorCollection
USERS_DB: AsyncIOMotorCollection

ERROR_LOGS: dict[int, dict[int, str]] = {} #Stores error that not a Voicelink Exception
LANGS: dict[str, dict[str, str]] = {} #Stores all the languages in ./langs
LOCAL_LANGS: dict[str, dict[str, str]] = {} #Stores all the localization languages in ./local_langs
SETTINGS_BUFFER: dict[int, dict[str, Any]] = {} #Cache guild language
USERS_BUFFER: dict[str, dict] = {}

USERS_BASE: dict[str, Any] = {
    'playlist': {
        '200': {
            'tracks':[],
            'perms': {'read': [], 'write':[], 'remove': []},
            'name':'Favourite',
            'type':'playlist'
        }
    },
    'history': [],
    'inbox':[]
}

ALLOWED_MENTIONS = discord.AllowedMentions().none()

#-------------- Vocard Functions --------------
def open_json(path: str) -> dict:
    try:
        with open(os.path.join(ROOT_DIR, path), encoding="utf8") as json_file:
            return json.load(json_file)
    except:
        return {}

def update_json(path: str, new_data: dict) -> None:
    data = open_json(path)
    if not data:
        return
    
    data.update(new_data)

    with open(os.path.join(ROOT_DIR, path), "w") as json_file:
        json.dump(data, json_file, indent=4)

def langs_setup() -> None:
    for language in os.listdir(os.path.join(ROOT_DIR, "langs")):
        if language.endswith('.json'):
            LANGS[language[:-5]] = {}
    
    for language in os.listdir(os.path.join(ROOT_DIR, "local_langs")):
        if language.endswith('.json'):
            LOCAL_LANGS[language[:-5]] = open_json(os.path.join("local_langs", language))

    return

def time(millis:int) -> str:
    seconds=(millis/1000)%60
    minutes=(millis/(1000*60))%60
    hours=(millis/(1000*60*60))%24
    if hours > 1:
        return "%02d:%02d:%02d" % (hours, minutes, seconds)
    else:
        return "%02d:%02d" % (minutes, seconds)

def formatTime(number:str) -> Optional[int]:
    try:
        try:
            num = strptime(number, '%M:%S')
        except ValueError:
            try:
                num = strptime(number, '%S')
            except ValueError:
                num = strptime(number, '%H:%M:%S')
    except:
        return None
    
    return (int(num.tm_hour) * 3600 + int(num.tm_min) * 60 + int(num.tm_sec)) * 1000

def get_source(source: str, type: str) -> str:
    source_settings: dict = settings.sources_settings.get(source.lower(), {})
    return source_settings.get(type, ("🔗" if type == "emoji" else settings.embed_color))

def gen_report() -> Optional[discord.File]:
    if ERROR_LOGS:
        errorText = ""
        for guild_id, error in ERROR_LOGS.items():
            errorText += f"Guild ID: {guild_id}\n" + "-" * 30 + "\n"
            for index, (key, value) in enumerate(error.items() , start=1):
                errorText += f"Error No: {index}, Time: {datetime.fromtimestamp(key)}\n" + value + "-" * 30 + "\n\n"

        buffer = BytesIO(errorText.encode('utf-8'))
        file = discord.File(buffer, filename='report.txt')
        buffer.close()

        return file        
    return None

def cooldown_check(ctx: commands.Context) -> Optional[commands.Cooldown]:
    if ctx.author.id in settings.bot_access_user:
        return None
    cooldown = settings.cooldowns_settings.get(f"{ctx.command.parent.qualified_name} {ctx.command.name}" if ctx.command.parent else ctx.command.name)
    if not cooldown:
        return None
    return commands.Cooldown(cooldown[0], cooldown[1])

def get_aliases(name: str) -> list:
    return settings.aliases_settings.get(name, [])

def check_roles() -> tuple[str, int, int]:
    return 'Normal', 5, 500

def truncate_string(text: str, length: int = 40) -> str:
    return text[:length - 3] + "..." if len(text) > length else text
    
def get_lang_non_async(guild_id: int, *keys) -> Union[list[str], str]:
    settings = SETTINGS_BUFFER.get(guild_id, {})
    lang = settings.get("lang", "EN")
    if lang in LANGS and not LANGS[lang]:
        LANGS[lang] = open_json(os.path.join("langs", f"{lang}.json"))

    if len(keys) == 1:
        return LANGS.get(lang, {}).get(keys[0], "Language pack not found!")
    return [LANGS.get(lang, {}).get(key, "Language pack not found!") for key in keys]

async def get_lang(guild_id:int, *keys) -> Union[list[str], str]:
    settings = await get_settings(guild_id)
    lang = settings.get("lang", "EN")
    if lang in LANGS and not LANGS[lang]:
        LANGS[lang] = open_json(os.path.join("langs", f"{lang}.json"))

    if len(keys) == 1:
        return LANGS.get(lang, {}).get(keys[0], "Language pack not found!")
    return [LANGS.get(lang, {}).get(key, "Language pack not found!") for key in keys]

async def send(ctx: Union[commands.Context, discord.Interaction], key: str, *params, delete_after: float = None, ephemeral: bool = False) -> Optional[discord.Message]:
    text = await get_lang(ctx.guild.id, key)
    text = text.format(*params)

    send_func = ctx.send if isinstance(ctx, commands.Context) else (ctx.followup.send if ctx.response.is_done() else ctx.response.send_message)
    return await send_func(text, delete_after=delete_after, ephemeral=ephemeral, allowed_mentions=ALLOWED_MENTIONS)

async def update_db(db: AsyncIOMotorCollection, tempStore: dict, filter: dict, data: dict) -> bool:
    for mode, action in data.items():
        for key, value in action.items():
            cursors = key.split(".")

            nested_data = tempStore
            for c in cursors[:-1]:
                nested_data = nested_data.setdefault(c, {})

            if mode == "$set":
                try:
                    nested_data[cursors[-1]] = value
                except TypeError:
                    nested_data[int(cursors[-1])] = value

            elif mode == "$unset":
                nested_data.pop(cursors[-1], None)

            elif mode == "$inc":
                nested_data[cursors[-1]] = nested_data.get(cursors[-1], 0) + value

            elif mode == "$push":
                if isinstance(value, dict) and "$each" in value:
                    nested_data.setdefault(cursors[-1], []).extend(value["$each"][value.get("$slice", len(value["$each"])):])
                else:
                    nested_data.setdefault(cursors[-1], []).extend([value])
                    
            elif mode == "$push":
                if isinstance(value, dict) and "$each" in value:
                    nested_data.setdefault(cursors[-1], []).extend(value["$each"])
                    nested_data[cursors[-1]] = nested_data[cursors[-1]][value.get("$slice", len(value["$each"])):]
                else:
                    nested_data.setdefault(cursors[-1], []).extend([value])

            elif mode == "$pull":
                if cursors[-1] in nested_data:
                    value = value.get("$in", []) if isinstance(value, dict) else [value]
                    nested_data[cursors[-1]] = [item for item in nested_data[cursors[-1]] if item not in value]
                    
            else:
                return False

    result = await db.update_one(filter, data)
    return result.modified_count > 0

async def get_settings(guild_id:int) -> dict[str, Any]:
    settings = SETTINGS_BUFFER.get(guild_id, None)
    if not settings:
        settings = await SETTINGS_DB.find_one({"_id": guild_id})
        if not settings:
            await SETTINGS_DB.insert_one({"_id": guild_id})
            
        settings = SETTINGS_BUFFER[guild_id] = settings or {}
    return settings

async def update_settings(guild_id: int, data: dict[str, dict[str, Any]]) -> bool:
    settings = await get_settings(guild_id)
    return await update_db(SETTINGS_DB, settings, {"_id": guild_id}, data)
            
async def get_user(user_id: int, d_type: Optional[str] = None, need_copy: bool = True) -> Dict[str, Any]:
    user = USERS_BUFFER.get(user_id)
    if not user:
        user = await USERS_DB.find_one({"_id": user_id})
        if not user:
            user = {"_id": user_id, **USERS_BASE}
            await USERS_DB.insert_one(user)
    
        USERS_BUFFER[user_id] = user
        
    if d_type:
        user = user.setdefault(d_type, copy.deepcopy(USERS_BASE.get(d_type)))
            
    return copy.deepcopy(user) if need_copy else user

async def update_user(user_id:int, data:dict) -> bool:
    playlist = await get_user(user_id, need_copy=False)
    return await update_db(USERS_DB, playlist, {"_id": user_id}, data)