Files
romm/backend/handler/filesystem/assets_handler.py
2026-02-16 13:51:20 -05:00

97 lines
3.1 KiB
Python

import hashlib
import os
import zipfile
from config import ASSETS_BASE_PATH
from logger.logger import log
from models.user import User
from .base_handler import FSHandler
class FSAssetsHandler(FSHandler):
def __init__(self) -> None:
super().__init__(base_path=ASSETS_BASE_PATH)
def user_folder_path(self, user: User):
return os.path.join("users", user.fs_safe_folder_name)
# /users/557365723a31/profile
def build_avatar_path(self, user: User):
return os.path.join(self.user_folder_path(user), "profile")
def _build_asset_file_path(
self,
user: User,
folder: str,
platform_fs_slug: str,
rom_id: int,
emulator: str | None = None,
):
user_folder_path = self.user_folder_path(user)
assets_path = os.path.join(
user_folder_path, folder, platform_fs_slug, str(rom_id)
)
if emulator:
assets_path = os.path.join(assets_path, emulator)
return assets_path
# /users/557365723a31/saves/n64/{rom.id}/mupen64plus/
def build_saves_file_path(
self,
user: User,
platform_fs_slug: str,
rom_id: int,
emulator: str | None = None,
):
return self._build_asset_file_path(
user, "saves", platform_fs_slug, rom_id, emulator
)
# /users/557365723a31/states/n64/{rom.id}/mupen64plus
def build_states_file_path(
self,
user: User,
platform_fs_slug: str,
rom_id: int,
emulator: str | None = None,
):
return self._build_asset_file_path(
user, "states", platform_fs_slug, rom_id, emulator
)
# /users/557365723a31/screenshots/{rom.id}/n64
def build_screenshots_file_path(
self, user: User, platform_fs_slug: str, rom_id: int
):
return self._build_asset_file_path(
user, "screenshots", platform_fs_slug, rom_id
)
async def _compute_file_hash(self, file_path: str) -> str:
hash_obj = hashlib.md5(usedforsecurity=False)
async with await self.stream_file(file_path=file_path) as f:
while chunk := await f.read(8192):
hash_obj.update(chunk)
return hash_obj.hexdigest()
async def _compute_zip_hash(self, zip_path: str) -> str:
with zipfile.ZipFile(zip_path, "r") as zf:
file_hashes = []
for name in sorted(zf.namelist()):
if not name.endswith("/"):
content = zf.read(name)
file_hash = hashlib.md5(content, usedforsecurity=False).hexdigest()
file_hashes.append(f"{name}:{file_hash}")
combined = "\n".join(file_hashes)
return hashlib.md5(combined.encode(), usedforsecurity=False).hexdigest()
async def compute_content_hash(self, file_path: str) -> str | None:
try:
if zipfile.is_zipfile(file_path):
return await self._compute_zip_hash(file_path)
return await self._compute_file_hash(file_path)
except Exception as e:
log.debug(f"Failed to compute content hash for {file_path}: {e}")
return None