refactor: restructure to core/ + ui/ with multi-threaded backend
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279
ui/app.py
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279
ui/app.py
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import asyncio
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from pathlib import Path
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from textual.app import App, ComposeResult
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from textual.binding import Binding
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from datetime import datetime
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from core import BackendServer, BackendClient
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from .models.message import Message, ToolCall, ToolResult
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from .models.config import AppConfig
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from .models.log_entry import LogEntry
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from .services.config_manager import ConfigManager
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from core import BackendClient
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class GraphMemoryApp(App[None]):
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CSS_PATH = [
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Path(__file__).parent / "styles" / "app.css",
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Path(__file__).parent / "styles" / "messages.css",
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Path(__file__).parent / "styles" / "components.css",
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]
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BINDINGS = [
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Binding("f1", "show_help", "帮助"),
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Binding("f2", "toggle_sidebar", "侧边栏"),
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Binding("f3", "toggle_tool_details", "工具详情"),
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Binding("f4", "focus_query", "查询"),
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Binding("f5", "clear_history", "清屏"),
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Binding("f6", "quit", "退出"),
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]
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def __init__(self, config: AppConfig | None = None, backend_server: BackendServer | None = None, **kwargs):
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super().__init__(**kwargs)
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self._config_manager = ConfigManager()
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if config:
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self._config = config
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elif self._config_manager.exists():
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self._config = self._config_manager.load()
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else:
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self._config = AppConfig.from_env()
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if backend_server:
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self._backend_server = backend_server
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self._backend_client = BackendClient(backend_server)
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else:
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self._backend_server: BackendServer | None = None
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self._backend_client: BackendClient | None = None
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def compose(self) -> ComposeResult:
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from .widgets.left_panel import LeftPanel
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from .widgets.right_panel import RightPanel
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from .widgets.status_bar import StatusBar
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yield LeftPanel()
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yield RightPanel(self._config, use_embedded_db=True)
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yield StatusBar()
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def on_mount(self) -> None:
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from .widgets.message_history import MessageHistory
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history = self.query_one(MessageHistory)
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try:
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self._backend_server = BackendServer(
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db_path="graph_memory.db",
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use_embedded_db=True
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)
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self._backend_server.start(
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api_key=self._config.api_key,
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base_url=self._config.base_url
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)
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self._backend_client = BackendClient(self._backend_server)
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welcome = Message(
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role="assistant",
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content="系统初始化成功！\n\n"
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f"数据库: 内嵌SQLite (graph_memory.db)\n"
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f"API Key: {'已配置' if self._config.api_key else '未配置'}\n\n"
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"现在可以开始对话了！",
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)
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history.add_message(welcome)
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except Exception as e:
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error = Message(
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role="assistant",
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content=f"初始化失败: {str(e)}\n\n"
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"请检查：\n"
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"1. API Key 是否配置\n"
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"2. 网络连接是否正常\n\n"
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"按F2打开侧边栏配置API Key",
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)
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history.add_message(error)
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def on_unmount(self) -> None:
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if self._backend_server:
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self._backend_server.shutdown()
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def action_show_help(self) -> None:
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help_text = """
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快捷键：
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F1 - 帮助
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F2 - 切换侧边栏
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F3 - 工具详情
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F4 - 查询框
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F5 - 清屏
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F6 - 退出
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输入消<EFBFBD><EFBFBD>后按 Enter 发送
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"""
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self.notify(help_text, title="帮助", timeout=10)
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def action_toggle_sidebar(self) -> None:
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from .widgets.right_panel import RightPanel
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sidebar = self.query_one(RightPanel)
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sidebar.toggle()
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sidebar.update_title()
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def action_toggle_tool_details(self) -> None:
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from .widgets.message_history import MessageHistory
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history = self.query_one(MessageHistory)
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history.toggle_latest_tool_details()
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def action_focus_query(self) -> None:
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from .widgets.right_panel import RightPanel
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sidebar = self.query_one(RightPanel)
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if not sidebar.has_cypher_query_box():
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self.notify("查询框仅在 Neo4j 模式下可用", title="提示", timeout=3)
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return
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if sidebar.is_collapsed():
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sidebar.toggle()
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sidebar.update_title()
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query_box = sidebar.get_cypher_query_box()
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if query_box:
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query_box.focus()
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def action_clear_history(self) -> None:
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from .widgets.message_history import MessageHistory
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history = self.query_one(MessageHistory)
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history.clear_messages()
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def on_input_box_send_message(self, event) -> None:
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from .widgets.input_box import InputBox
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from .widgets.message_history import MessageHistory
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from .widgets.right_panel import RightPanel
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try:
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history = self.query_one(MessageHistory)
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user_message = Message(role="user", content=event.content)
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history.add_message(user_message)
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if not self._config.api_key:
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response_msg = Message(
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role="assistant",
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content="请先配置API Key。\n\n按F2打开侧边栏，输入API Key后按Enter保存。",
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)
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history.add_message(response_msg)
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return
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processing_msg = Message(role="assistant", content="正在处理...")
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history.add_message(processing_msg)
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asyncio.create_task(self._process_message_async(event.content))
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except Exception as e:
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error_msg = Message(role="assistant", content=f"错误: {str(e)}")
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history.add_message(error_msg)
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async def _process_message_async(self, user_input: str) -> None:
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from .widgets.message_history import MessageHistory
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from .widgets.right_panel import RightPanel
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history = self.query_one(MessageHistory)
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log = self.query_one(RightPanel).get_operation_log()
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try:
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if not self._backend_client:
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raise Exception("后端未初始化")
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result = await asyncio.get_event_loop().run_in_executor(
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None,
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lambda: self._backend_client.process_message(user_input)
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)
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content = result.get("content", "(无回复)")
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tool_calls_data = result.get("tool_calls", [])
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rejected_tools = result.get("rejected_tools", [])
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tool_calls = []
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tool_results = []
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for tc in tool_calls_data:
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tc_obj = ToolCall(
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id=tc.get("id", ""),
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name=tc.get("name", ""),
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arguments=tc.get("arguments", {})
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)
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tool_calls.append(tc_obj)
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tr = ToolResult(
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tool_call_id=tc_obj.id,
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name=tc_obj.name,
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arguments=tc_obj.arguments,
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result=tc.get("result", ""),
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success=not tc.get("result", "").startswith("工具执行<EFBFBD><EFBFBD><EFBFBD>误")
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)
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tool_results.append(tr)
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log_entry = LogEntry(
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tool_name=tc_obj.name,
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arguments=tc_obj.arguments,
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result=tc.get("result", ""),
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)
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log.add_log(log_entry)
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assistant_message = Message(
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role="assistant",
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content=content,
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tool_calls=tool_calls if tool_calls else None,
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tool_results=tool_results if tool_results else None
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)
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history.add_message(assistant_message)
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self.refresh()
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except Exception as e:
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error_msg = str(e)
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if "Connection error" in error_msg or "connection" in error_msg.lower():
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help_text = """
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网络连接错误！可能的原因：
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1. API Key 未配置或无效
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2. 网络无法访问 API 服务器
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3. API 服务器暂时不可用
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解决方法：
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按 F2 展开侧边栏，检查并配置 API Key
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检查网络连接
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"""
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elif "API Key" in error_msg:
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help_text = """
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API Key 未配置！
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请按以下步骤配置：
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1. 按 F2 展开右侧边栏
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2. 点击"配置"展开配置区
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3. 在 API Key 输入框输入你的密钥
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4. 按 Enter 键保存配置
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获取 API Key: https://platform.deepseek.com/
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"""
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else:
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help_text = f"\n详细错误: {error_msg}"
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error_message = Message(role="assistant", content=f"错误: {error_msg}\n{help_text}")
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history.add_message(error_message)
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def on_config_section_config_changed(self, event) -> None:
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from .widgets.right_panel import RightPanel
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self._config = event.config
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self._config_manager.save(self._config)
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try:
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right_panel = self.query_one(RightPanel)
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right_panel._config = self._config
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except Exception:
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pass
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if self._backend_client:
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self._backend_client.update_config(
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api_key=self._config.api_key,
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base_url=self._config.base_url
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)
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self.notify("配置已保存并应用", title="配置")
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else:
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self.notify("配置已保存，但后端未初始化", title="警告")
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