import os
from io import BytesIO

# 先实现本地文件存储，MinIO 作为选项
STORAGE_BASE = os.getenv("LOCAL_STORAGE_PATH", "./data/files")


def save_file(content: bytes, file_path: str) -> str:
    """保存文件到本地存储，返回完整路径"""
    full_path = os.path.join(STORAGE_BASE, file_path)
    os.makedirs(os.path.dirname(full_path), exist_ok=True)
    with open(full_path, "wb") as f:
        f.write(content)
    return full_path


def read_file(file_path: str) -> bytes:
    """读取文件内容"""
    full_path = os.path.join(STORAGE_BASE, file_path)
    with open(full_path, "rb") as f:
        return f.read()


def delete_file(file_path: str):
    """删除文件"""
    full_path = os.path.join(STORAGE_BASE, file_path)
    if os.path.exists(full_path):
        os.remove(full_path)