import base64
import os
import shutil
import uuid


def get_ext(filename: str) -> str:
    if not filename:
        return ""
    pos = filename.rfind(".")
    return filename[pos + 1:] if pos > -1 else ""


def get_short_filename(filename: str) -> str:
    if not filename:
        return ""
    return os.path.basename(filename)


def remove_ext(filename: str) -> str:
    if not filename:
        return filename
    pos = filename.rfind(".")
    return filename[:pos] if pos > -1 else filename


def is_image(filename: str) -> bool:
    return get_ext(filename).lower() in ("jpg", "jpeg", "png", "bmp")


def is_video(filename: str) -> bool:
    return get_ext(filename).lower() in ("mp4", "mov")


def generate_unique_filename(original: str) -> str:
    if not original:
        return str(uuid.uuid4())
    pos = original.rfind(".")
    if pos >= 0:
        ext = original[pos:]
        return str(uuid.uuid4()) + ext
    return str(uuid.uuid4())


def base64_content(filepath: str) -> str:
    with open(filepath, "rb") as f:
        return base64.b64encode(f.read()).decode("utf-8")


def base64_to_file(content: str, filepath: str):
    os.makedirs(os.path.dirname(filepath), exist_ok=True)
    with open(filepath, "wb") as f:
        f.write(base64.b64decode(content))


def copy_file(src: str, dst: str):
    os.makedirs(os.path.dirname(dst), exist_ok=True)
    shutil.copy2(src, dst)


def copy_directory(src: str, dst: str):
    if os.path.exists(dst):
        shutil.rmtree(dst)
    shutil.copytree(src, dst)


def delete_directory(path: str):
    if os.path.isdir(path):
        shutil.rmtree(path, ignore_errors=True)


def move_file(src: str, dst: str):
    os.makedirs(os.path.dirname(dst), exist_ok=True)
    shutil.move(src, dst)


def force_mkdir(path: str):
    os.makedirs(path, exist_ok=True)


def write_bytes(filepath: str, data: bytes):
    os.makedirs(os.path.dirname(filepath), exist_ok=True)
    with open(filepath, "wb") as f:
        f.write(data)