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# Copyright (C) @TheSmartBisnu
# Channel: https://t.me/itsSmartDev

import os
import shutil
from typing import Optional

from logger import LOGGER

SIZE_UNITS = ["B", "KB", "MB", "GB", "TB", "PB"]


def get_download_path(folder_id: int, filename: str, root_dir: str = "downloads") -> str:
    folder = os.path.join(root_dir, str(folder_id))
    os.makedirs(folder, exist_ok=True)
    return os.path.join(folder, filename)


def cleanup_download(path: str) -> None:
    try:
        LOGGER(__name__).info(f"Cleaning Download: {path}")
        if os.path.exists(path):
            os.remove(path)
        if os.path.exists(path + ".temp"):
            os.remove(path + ".temp")
        folder = os.path.dirname(path)
        if os.path.isdir(folder) and not os.listdir(folder):
            os.rmdir(folder)
    except Exception as e:
        LOGGER(__name__).error(f"Cleanup failed for {path}: {e}")


def cleanup_downloads_root(root_dir: str = "downloads") -> tuple[int, int]:
    if not os.path.isdir(root_dir):
        return 0, 0
    file_count = 0
    total_size = 0
    for dirpath, _, filenames in os.walk(root_dir):
        for name in filenames:
            file_count += 1
            try:
                total_size += os.path.getsize(os.path.join(dirpath, name))
            except OSError:
                pass
    shutil.rmtree(root_dir, ignore_errors=True)
    return file_count, total_size


def get_readable_file_size(size_in_bytes: Optional[float]) -> str:
    if size_in_bytes is None or size_in_bytes < 0:
        return "0B"
    for unit in SIZE_UNITS:
        if size_in_bytes < 1024:
            return f"{size_in_bytes:.2f} {unit}"
        size_in_bytes /= 1024
    return "File too large"


def get_readable_time(seconds: int) -> str:
    result = ""
    days, remainder = divmod(seconds, 86400)
    if int(days):
        result += f"{int(days)}d"
    hours, remainder = divmod(remainder, 3600)
    if int(hours):
        result += f"{int(hours)}h"
    minutes, seconds = divmod(remainder, 60)
    if int(minutes):
        result += f"{int(minutes)}m"
    result += f"{int(seconds)}s"
    return result


async def fileSizeLimit(file_size, message, action_type="download", is_premium=False):
    MAX_FILE_SIZE = 2 * 2_097_152_000 if is_premium else 2_097_152_000
    if file_size > MAX_FILE_SIZE:
        await message.reply(
            f"The file size exceeds the {get_readable_file_size(MAX_FILE_SIZE)} "
            f"limit and cannot be {action_type}ed."
        )
        return False
    return True