import os

def format_file_size(size_bytes):
    """将字节大小转换为可读性更好的格式"""
    if size_bytes == 0:
        return "0 B"
    
    size_names = ["B", "KB", "MB", "GB", "TB"]
    i = 0
    while size_bytes >= 1024 and i < len(size_names) - 1:
        size_bytes /= 1024.0
        i += 1
    
    return f"{size_bytes:.1f} {size_names[i]}"

def format_status(status):
    """将状态代码转换为中文描述"""
    status_map = {
        'uploading': '做种中',
        'downloading': '下载中',
        'paused': '已暂停',
        'checking': '检查中',
        'error': '错误',
        'completed': '已完成',
        'stalledUP': '做种中(空闲)',
        'stalledDL': '下载中(空闲)',
        'queuedUP': '队列做种',
        'queuedDL': '队列下载',
        'forcedUP': '强制做种',
        'forcedDL': '强制下载',
        'missingFiles': '文件缺失',
        'allocating': '分配中',
        'metaDL': '获取元数据',
        'moving': '移动中',
        'unknown': '未知'
    }
    
    # Transmission状态码映射
    transmission_status_map = {
        0: '已暂停',
        1: '等待校验',
        2: '正在校验',
        3: '等待下载',
        4: '下载中',
        5: '等待做种',
        6: '做种中'
    }
    
    if isinstance(status, int):
        return transmission_status_map.get(status, '未知')
    else:
        return status_map.get(status, status)