import os
import logging
from pathlib import Path

logger = logging.getLogger(__name__)


def is_path_inside_root(file_path: str, root: str) -> bool:
    try:
        real_path = os.path.realpath(file_path)
        real_root = os.path.realpath(root)
        return os.path.commonpath([real_path, real_root]) == real_root
    except (ValueError, OSError):
        return False


def validate_media_path(file_path: str, local_roots: list[str]) -> bool:
    if not local_roots:
        return False
    for root in local_roots:
        if is_path_inside_root(file_path, root):
            return True
    return False


def get_media_size_mb(file_path: str) -> float:
    try:
        return os.path.getsize(file_path) / (1024 * 1024)
    except OSError:
        return 0.0


def sanitize_filename(filename: str) -> str:
    base = os.path.basename(filename)
    base = base.replace("\r", "").replace("\n", "")
    return base


def guess_mime_type(file_path: str) -> str:
    ext = Path(file_path).suffix.lower()
    mime_map = {
        ".jpg": "image/jpeg",
        ".jpeg": "image/jpeg",
        ".png": "image/png",
        ".gif": "image/gif",
        ".webp": "image/webp",
        ".mp4": "video/mp4",
        ".mov": "video/quicktime",
        ".mp3": "audio/mpeg",
        ".caf": "audio/x-caf",
        ".m4a": "audio/mp4",
        ".pdf": "application/pdf",
        ".txt": "text/plain",
    }
    return mime_map.get(ext, "application/octet-stream")