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"""
File operation models
"""
from dataclasses import dataclass, field
from typing import List, Optional, Dict, Any
from datetime import datetime
from .base import BaseRequest, BaseResponse, OperationStatus
@dataclass
class FileMetadata:
"""File metadata information"""
filename: str
full_path: str
file_size: int
file_size_mb: float
created_time: datetime
modified_time: datetime
file_extension: str
is_audio_file: bool = False
@dataclass
class FileInfoRequest(BaseRequest):
"""Request model for file information"""
file_path: str
@dataclass
class FileInfoResponse(BaseResponse):
"""Response model for file information"""
file_path: str = ""
file_exists: bool = False
metadata: Optional[FileMetadata] = None
@classmethod
def success(
cls,
file_path: str,
metadata: FileMetadata,
message: str = "文件信息获取成功"
) -> "FileInfoResponse":
"""Create successful response"""
return cls(
status=OperationStatus.SUCCESS,
message=message,
file_path=file_path,
file_exists=True,
metadata=metadata
)
@classmethod
def failed(
cls,
file_path: str,
error_message: str,
error_code: str = "FILE_ERROR",
error_details: Optional[Dict[str, Any]] = None
) -> "FileInfoResponse":
"""Create failed response"""
return cls(
status=OperationStatus.FAILED,
message=error_message,
error_code=error_code,
error_details=error_details,
file_path=file_path,
file_exists=False
)
@dataclass
class FileReadRequest(BaseRequest):
"""Request model for file reading"""
file_path: str
chunk_size: int = 64 * 1024 # 64KB
start_position: int = 0
@dataclass
class FileReadProgress:
"""File reading progress information"""
current_position: int
file_size: int
bytes_read: int
content_length: int
progress_percentage: float
end_of_file_reached: bool
actual_boundary: str
@dataclass
class FileReadResponse(BaseResponse):
"""Response model for file reading"""
file_path: str = ""
content: str = ""
progress: Optional[FileReadProgress] = None
@classmethod
def success(
cls,
file_path: str,
content: str,
progress: FileReadProgress,
message: str = "文件读取成功"
) -> "FileReadResponse":
"""Create successful response"""
return cls(
status=OperationStatus.SUCCESS,
message=message,
file_path=file_path,
content=content,
progress=progress
)
@classmethod
def failed(
cls,
file_path: str,
error_message: str,
error_code: str = "FILE_READ_ERROR",
error_details: Optional[Dict[str, Any]] = None
) -> "FileReadResponse":
"""Create failed response"""
return cls(
status=OperationStatus.FAILED,
message=error_message,
error_code=error_code,
error_details=error_details,
file_path=file_path
)
@dataclass
class DirectoryListRequest(BaseRequest):
"""Request model for directory listing"""
directory: str
file_extension_filter: Optional[str] = None # e.g., ".mp3"
@dataclass
class DirectoryListResponse(BaseResponse):
"""Response model for directory listing"""
directory: str = ""
total_files: int = 0
file_list: List[FileMetadata] = field(default_factory=list)
@classmethod
def success(
cls,
directory: str,
file_list: List[FileMetadata],
message: str = "目录扫描成功"
) -> "DirectoryListResponse":
"""Create successful response"""
return cls(
status=OperationStatus.SUCCESS,
message=message,
directory=directory,
total_files=len(file_list),
file_list=file_list
)
@classmethod
def failed(
cls,
directory: str,
error_message: str,
error_code: str = "DIRECTORY_ERROR",
error_details: Optional[Dict[str, Any]] = None
) -> "DirectoryListResponse":
"""Create failed response"""
return cls(
status=OperationStatus.FAILED,
message=error_message,
error_code=error_code,
error_details=error_details,
directory=directory
) |