Implement FastAPI backend with REST API and basic frontend

Co-authored-by: TheFunny <26841179+TheFunny@users.noreply.github.com>

gui_fastapi.py

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+import threading
+from multiprocessing import Event, Process
+
+from module.logger import logger
+from module.webui.setting import State
+
+
+def func(ev: threading.Event):
+    import argparse
+    import asyncio
+    import sys
+
+    import uvicorn
+
+    if sys.platform.startswith("win"):
+        asyncio.set_event_loop_policy(asyncio.WindowsProactorEventLoopPolicy())
+
+    State.restart_event = ev
+
+    parser = argparse.ArgumentParser(description="Alas FastAPI web service")
+    parser.add_argument(
+        "--host",
+        type=str,
+        help="Host to listen. Default to WebuiHost in deploy setting",
+    )
+    parser.add_argument(
+        "-p",
+        "--port",
+        type=int,
+        help="Port to listen. Default to WebuiPort in deploy setting",
+    )
+    parser.add_argument(
+        "-k", "--key", type=str, help="Password of alas. No password by default"
+    )
+    parser.add_argument(
+        "--electron", action="store_true", help="Runs by electron client."
+    )
+    parser.add_argument(
+        "--run",
+        nargs="+",
+        type=str,
+        help="Run alas by config names on startup",
+    )
+    args, _ = parser.parse_known_args()
+
+    host = args.host or State.deploy_config.WebuiHost or "0.0.0.0"
+    port = args.port or int(State.deploy_config.WebuiPort) or 23467
+    State.electron = args.electron
+
+    logger.hr("Launcher config")
+    logger.attr("Host", host)
+    logger.attr("Port", port)
+    logger.attr("Backend", "FastAPI")
+    logger.attr("Electron", args.electron)
+    logger.attr("Reload", ev is not None)
+
+    if State.electron:
+        logger.info("Electron detected, remove log output to stdout")
+        from module.logger.logger import console_hdlr
+        logger.removeHandler(console_hdlr)
+
+    # Use the new FastAPI backend
+    uvicorn.run(
+        "module.webui.fastapi_backend.main:app",
+        host=host,
+        port=port,
+        reload=False
+    )
+
+
+if __name__ == "__main__":
+    if State.deploy_config.EnableReload:
+        should_exit = False
+        while not should_exit:
+            event = Event()
+            process = Process(target=func, args=(event,))
+            process.start()
+            while not should_exit:
+                try:
+                    b = event.wait(1)
+                except KeyboardInterrupt:
+                    should_exit = True
+                    break
+                if b:
+                    process.kill()
+                    break
+                elif process.is_alive():
+                    continue
+                else:
+                    should_exit = True
+    else:
+        func(None)

module/webui/fastapi_backend/README.md

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+# FastAPI Backend for ArisuAutoSweeper
+
+This is the new FastAPI-based backend for the ArisuAutoSweeper WebUI, providing a modern REST API architecture while maintaining the same visual style as the original PyWebIO interface.
+
+## Architecture
+
+### Backend (FastAPI)
+- **main.py**: Main FastAPI application with route registration and lifecycle management
+- **routes/**: API endpoint modules
+  - `config.py`: Configuration management endpoints
+  - `process.py`: Process control endpoints (start/stop/restart)
+  - `system.py`: System settings and update management
+- **websocket_handler.py**: WebSocket endpoints for real-time log streaming
+- **templates/**: Jinja2 HTML templates
+- **static/**: Static assets (CSS, JS)
+
+### Frontend
+- Simple HTML/CSS/JS frontend that reuses existing CSS from `assets/gui/css/`
+- Bootstrap 5 for base styling
+- Native JavaScript for API interactions
+- WebSocket for real-time updates
+
+## Usage
+
+### Starting the FastAPI Backend
+
+```bash
+# Use the new FastAPI backend
+python gui_fastapi.py
+
+# Or with custom host/port
+python gui_fastapi.py --host 0.0.0.0 --port 23467
+```
+
+### API Endpoints
+
+#### Configuration Management
+- `GET /api/config/instances` - Get list of all instances
+- `GET /api/config/{instance_name}` - Get configuration for an instance
+- `POST /api/config/{instance_name}` - Update configuration
+- `POST /api/config/create` - Create new instance
+- `DELETE /api/config/{instance_name}` - Delete instance
+
+#### Process Management
+- `GET /api/process/` - Get all processes status
+- `GET /api/process/{instance_name}/status` - Get process status
+- `POST /api/process/{instance_name}/start` - Start process
+- `POST /api/process/{instance_name}/stop` - Stop process
+- `POST /api/process/{instance_name}/restart` - Restart process
+
+#### System Management
+- `GET /api/system/info` - Get system information
+- `POST /api/system/language` - Set language
+- `POST /api/system/theme` - Set theme
+- `GET /api/system/update/status` - Get update status
+- `POST /api/system/update/check` - Check for updates
+- `POST /api/system/update/run` - Run update
+- `POST /api/system/restart` - Restart system
+
+#### WebSocket
+- `WS /ws/logs/{instance_name}` - Real-time log streaming for an instance
+- `WS /ws/system` - System-wide real-time updates
+
+## Comparison with PyWebIO Backend
+
+### PyWebIO Backend (Original)
+- **Location**: `module/webui/app.py`
+- **Entry Point**: `gui.py`
+- **Architecture**: Monolithic, UI generated from Python code
+- **Advantages**: Simpler development, no frontend/backend separation
+- **Disadvantages**: Tightly coupled, harder to extend, limited API access
+
+### FastAPI Backend (New)
+- **Location**: `module/webui/fastapi_backend/`
+- **Entry Point**: `gui_fastapi.py`
+- **Architecture**: Separated backend (REST API) and frontend
+- **Advantages**: 
+  - Modern REST API
+  - Can be used by multiple clients (web, mobile, CLI)
+  - Better separation of concerns
+  - Easier to test and extend
+  - Real-time updates via WebSocket
+- **Disadvantages**: More code to maintain, requires frontend development
+
+## Migration Path
+
+Both backends can coexist:
+- Use `python gui.py` for the original PyWebIO interface
+- Use `python gui_fastapi.py` for the new FastAPI interface
+
+Users can gradually migrate from PyWebIO to FastAPI as features are completed.
+
+## Development
+
+### Adding New Endpoints
+
+1. Create or modify files in `routes/`
+2. Add Pydantic models for request/response validation
+3. Register the router in `main.py`
+4. Update the frontend to use the new endpoints
+
+### Reusing Existing CSS
+
+The frontend reuses CSS from `assets/gui/css/`:
+- `alas.css` - Base styles
+- `alas-pc.css` - Desktop styles
+- `light-alas.css` / `dark-alas.css` - Theme styles
+
+## Testing
+
+```bash
+# Test that the app loads
+python -c "from module.webui.fastapi_backend.main import app; print('OK')"
+
+# Start the server
+python gui_fastapi.py
+
+# Access the interface
+# Open browser to http://localhost:23467
+```
+
+## Future Enhancements
+
+- [ ] Complete configuration editor UI
+- [ ] Enhanced log viewer with filtering
+- [ ] Scheduler visualization
+- [ ] Task queue management
+- [ ] Mobile-responsive design improvements
+- [ ] Authentication/authorization
+- [ ] API documentation (Swagger UI at /docs)

module/webui/fastapi_backend/__init__.py

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+"""
+FastAPI backend for ArisuAutoSweeper WebUI
+"""

module/webui/fastapi_backend/main.py

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+"""
+FastAPI main application
+"""
+import os
+from pathlib import Path
+from typing import List
+
+from fastapi import FastAPI, Request
+from fastapi.staticfiles import StaticFiles
+from fastapi.templating import Jinja2Templates
+from fastapi.responses import HTMLResponse
+from fastapi.middleware.cors import CORSMiddleware
+
+from module.webui.fastapi_backend.routes import config, process, system
+from module.webui.fastapi_backend.websocket_handler import router as ws_router
+from module.webui.setting import State
+from module.webui import lang
+from module.webui.updater import updater
+from module.webui.process_manager import ProcessManager
+from module.logger import logger
+
+# Get base directory
+BASE_DIR = Path(__file__).resolve().parent
+
+# Create FastAPI app
+app = FastAPI(
+    title="ArisuAutoSweeper",
+    description="FastAPI backend for ArisuAutoSweeper WebUI",
+    version="1.0.0"
+)
+
+# Add CORS middleware
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Setup templates
+templates = Jinja2Templates(directory=str(BASE_DIR / "templates"))
+
+# Mount static files
+app.mount("/static", StaticFiles(directory=str(BASE_DIR / "static")), name="static")
+
+# Mount CSS assets from the main assets folder
+assets_path = Path(__file__).resolve().parent.parent.parent.parent / "assets" / "gui"
+if assets_path.exists():
+    app.mount("/assets", StaticFiles(directory=str(assets_path)), name="assets")
+
+# Include API routers
+app.include_router(config.router, prefix="/api/config", tags=["config"])
+app.include_router(process.router, prefix="/api/process", tags=["process"])
+app.include_router(system.router, prefix="/api/system", tags=["system"])
+app.include_router(ws_router, prefix="/ws", tags=["websocket"])
+
+
+@app.on_event("startup")
+async def startup_event():
+    """Initialize application on startup"""
+    logger.info("FastAPI WebUI starting up")
+    State.init()
+    lang.reload()
+    updater.event = State.manager.Event()
+
+
+@app.on_event("shutdown")
+async def shutdown_event():
+    """Cleanup on shutdown"""
+    logger.info("FastAPI WebUI shutting down")
+    for alas in ProcessManager._processes.values():
+        alas.stop()
+    State.clearup()
+
+
+@app.get("/", response_class=HTMLResponse)
+async def root(request: Request):
+    """Serve the main page"""
+    from module.config.utils import alas_instance
+    
+    context = {
+        "request": request,
+        "title": "ArisuAutoSweeper",
+        "instances": alas_instance(),
+        "theme": State.deploy_config.Theme,
+        "language": lang.LANG
+    }
+    return templates.TemplateResponse("index.html", context)
+
+
+@app.get("/health")
+async def health_check():
+    """Health check endpoint"""
+    return {
+        "status": "ok",
+        "version": "1.0.0"
+    }
+
+
+def create_app():
+    """Factory function to create the FastAPI app"""
+    return app

module/webui/fastapi_backend/routes/__init__.py

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+"""
+API routes for FastAPI backend
+"""

module/webui/fastapi_backend/routes/config.py

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+"""
+Configuration management API endpoints
+"""
+from typing import Dict, List, Any
+from fastapi import APIRouter, HTTPException
+from pydantic import BaseModel
+
+from module.config.utils import alas_instance, alas_template, filepath_args, read_file
+from module.webui.fake import load_config, get_config_mod
+from module.webui.setting import State
+from module.logger import logger
+
+router = APIRouter()
+
+
+class ConfigValue(BaseModel):
+    """Config value update model"""
+    path: str
+    value: Any
+
+
+@router.get("/instances")
+async def get_instances():
+    """Get list of all alas instances"""
+    return {
+        "instances": alas_instance(),
+        "templates": alas_template()
+    }
+
+
+@router.get("/{instance_name}")
+async def get_config(instance_name: str):
+    """Get configuration for a specific instance"""
+    try:
+        config_obj = load_config(instance_name)
+        config_data = config_obj.read_file(instance_name)
+        mod = get_config_mod(instance_name)
+        
+        # Get menu and args for this instance
+        menu = read_file(filepath_args("menu", mod))
+        args = read_file(filepath_args("args", mod))
+        
+        return {
+            "name": instance_name,
+            "mod": mod,
+            "config": config_data,
+            "menu": menu,
+            "args": args
+        }
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=404, detail=f"Config not found: {instance_name}")
+
+
+@router.post("/{instance_name}")
+async def update_config(instance_name: str, updates: List[ConfigValue]):
+    """Update configuration values"""
+    try:
+        config_obj = load_config(instance_name)
+        config_data = config_obj.read_file(instance_name)
+        
+        # Apply updates
+        for update in updates:
+            path_parts = update.path.split(".")
+            # Navigate to the nested dict and update
+            current = config_data
+            for part in path_parts[:-1]:
+                if part not in current:
+                    current[part] = {}
+                current = current[part]
+            current[path_parts[-1]] = update.value
+        
+        # Save config
+        config_obj.write_file(instance_name, config_data)
+        
+        logger.info(f"Updated config for {instance_name}")
+        return {"status": "success", "message": "Config updated"}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/create")
+async def create_instance(name: str, copy_from: str = "template-aas"):
+    """Create a new alas instance"""
+    try:
+        # Validate name
+        if name in alas_instance():
+            raise HTTPException(status_code=400, detail="Instance already exists")
+        
+        if set(name) & set(".\\/:*?\"'<>|"):
+            raise HTTPException(status_code=400, detail="Invalid characters in name")
+        
+        if name.lower().startswith("template"):
+            raise HTTPException(status_code=400, detail="Cannot start with 'template'")
+        
+        # Copy config
+        origin_config = load_config(copy_from).read_file(copy_from)
+        State.config_updater.write_file(name, origin_config, get_config_mod(copy_from))
+        
+        logger.info(f"Created new instance: {name}")
+        return {"status": "success", "name": name}
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.delete("/{instance_name}")
+async def delete_instance(instance_name: str):
+    """Delete an alas instance"""
+    try:
+        # Add implementation for deleting instance
+        # This would need to be added based on how configs are stored
+        raise HTTPException(status_code=501, detail="Delete not implemented")
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))

module/webui/fastapi_backend/routes/process.py

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+"""
+Process management API endpoints
+"""
+from fastapi import APIRouter, HTTPException
+from pydantic import BaseModel
+from typing import Optional
+
+from module.webui.process_manager import ProcessManager
+from module.webui.updater import updater
+from module.logger import logger
+
+router = APIRouter()
+
+
+class ProcessCommand(BaseModel):
+    """Process command model"""
+    task: Optional[str] = None
+
+
+@router.get("/{instance_name}/status")
+async def get_process_status(instance_name: str):
+    """Get process status"""
+    try:
+        alas = ProcessManager.get_manager(instance_name)
+        return {
+            "name": instance_name,
+            "alive": alas.alive,
+            "state": alas.state,
+            "config_name": alas.config_name
+        }
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=404, detail=f"Process not found: {instance_name}")
+
+
+@router.post("/{instance_name}/start")
+async def start_process(instance_name: str, command: ProcessCommand = ProcessCommand()):
+    """Start a process"""
+    try:
+        alas = ProcessManager.get_manager(instance_name)
+        alas.start(command.task, updater.event if command.task is None else None)
+        logger.info(f"Started process: {instance_name}")
+        return {"status": "success", "message": f"Started {instance_name}"}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/{instance_name}/stop")
+async def stop_process(instance_name: str):
+    """Stop a process"""
+    try:
+        alas = ProcessManager.get_manager(instance_name)
+        alas.stop()
+        logger.info(f"Stopped process: {instance_name}")
+        return {"status": "success", "message": f"Stopped {instance_name}"}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/{instance_name}/restart")
+async def restart_process(instance_name: str):
+    """Restart a process"""
+    try:
+        alas = ProcessManager.get_manager(instance_name)
+        alas.stop()
+        alas.start(None, updater.event)
+        logger.info(f"Restarted process: {instance_name}")
+        return {"status": "success", "message": f"Restarted {instance_name}"}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.get("/")
+async def get_all_processes():
+    """Get status of all processes"""
+    try:
+        processes = []
+        for name, alas in ProcessManager._processes.items():
+            processes.append({
+                "name": name,
+                "alive": alas.alive,
+                "state": alas.state
+            })
+        return {"processes": processes}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))

module/webui/fastapi_backend/routes/system.py

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+"""
+System management API endpoints
+"""
+from fastapi import APIRouter, HTTPException
+from pydantic import BaseModel
+
+from module.webui.updater import updater
+from module.webui.setting import State
+from module.webui import lang
+from module.logger import logger
+
+router = APIRouter()
+
+
+class LanguageSetting(BaseModel):
+    """Language setting model"""
+    language: str
+
+
+class ThemeSetting(BaseModel):
+    """Theme setting model"""
+    theme: str
+
+
+@router.get("/info")
+async def get_system_info():
+    """Get system information"""
+    return {
+        "version": "1.0.0",
+        "language": lang.LANG,
+        "theme": State.deploy_config.Theme,
+        "deploy_config": {
+            "host": State.deploy_config.WebuiHost,
+            "port": State.deploy_config.WebuiPort,
+            "password_enabled": State.deploy_config.Password is not None,
+            "remote_access": State.deploy_config.EnableRemoteAccess,
+        }
+    }
+
+
+@router.post("/language")
+async def set_language(setting: LanguageSetting):
+    """Set system language"""
+    try:
+        lang.set_language(setting.language)
+        State.deploy_config.Language = setting.language
+        return {"status": "success", "language": setting.language}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/theme")
+async def set_theme(setting: ThemeSetting):
+    """Set system theme"""
+    try:
+        State.deploy_config.Theme = setting.theme
+        State.theme = setting.theme
+        return {"status": "success", "theme": setting.theme}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.get("/update/status")
+async def get_update_status():
+    """Get update status"""
+    try:
+        return {
+            "state": updater.state,
+            "branch": updater.Branch,
+            "local_commit": updater.get_commit(short_sha1=True),
+            "upstream_commit": updater.get_commit(f"origin/{updater.Branch}", short_sha1=True)
+        }
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/update/check")
+async def check_update():
+    """Check for updates"""
+    try:
+        updater.check_update()
+        return {"status": "success", "message": "Checking for updates"}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/update/run")
+async def run_update():
+    """Run update"""
+    try:
+        updater.run_update()
+        return {"status": "success", "message": "Update started"}
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/restart")
+async def restart_system():
+    """Restart the system"""
+    try:
+        if State.restart_event is not None:
+            State.restart_event.set()
+            return {"status": "success", "message": "Restart initiated"}
+        else:
+            raise HTTPException(status_code=400, detail="Restart not enabled")
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.exception(e)
+        raise HTTPException(status_code=500, detail=str(e))

module/webui/fastapi_backend/templates/index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>{{ title }}</title>
+    
+    <!-- Bootstrap CSS -->
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
+    
+    <!-- Custom CSS - reuse existing styles -->
+    <link rel="stylesheet" href="/assets/css/alas.css">
+    <link rel="stylesheet" href="/assets/css/alas-pc.css">
+    {% if theme == 'dark' %}
+    <link rel="stylesheet" href="/assets/css/dark-alas.css">
+    {% else %}
+    <link rel="stylesheet" href="/assets/css/light-alas.css">
+    {% endif %}
+    
+    <style>
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+            margin: 0;
+            padding: 0;
+        }
+        
+        .app-container {
+            display: grid;
+            grid-template-areas:
+                "header header header"
+                "aside menu content";
+            grid-template-columns: 4rem 12rem 1fr;
+            grid-template-rows: 3.3125rem 1fr;
+            height: 100vh;
+            overflow: hidden;
+        }
+        
+        .header {
+            grid-area: header;
+            display: flex;
+            align-items: center;
+            padding: 0 1rem;
+            border-bottom: 1px solid var(--border-color, #dee2e6);
+        }
+        
+        .aside {
+            grid-area: aside;
+            overflow-y: auto;
+            border-right: 1px solid var(--border-color, #dee2e6);
+        }
+        
+        .menu {
+            grid-area: menu;
+            overflow-y: auto;
+            padding: 1rem 0.5rem;
+            border-right: 1px solid var(--border-color, #dee2e6);
+        }
+        
+        .content {
+            grid-area: content;
+            overflow-y: auto;
+            padding: 1rem;
+        }
+        
+        .instance-btn {
+            width: 100%;
+            margin-bottom: 0.5rem;
+        }
+        
+        .log-container {
+            background: #1e1e1e;
+            color: #d4d4d4;
+            padding: 1rem;
+            border-radius: 4px;
+            max-height: 400px;
+            overflow-y: auto;
+            font-family: 'Courier New', monospace;
+            font-size: 0.9rem;
+        }
+        
+        .status-badge {
+            display: inline-block;
+            padding: 0.25rem 0.5rem;
+            border-radius: 4px;
+            font-size: 0.875rem;
+        }
+        
+        .status-running { background: #28a745; color: white; }
+        .status-stopped { background: #6c757d; color: white; }
+        
+        .card {
+            margin-bottom: 1rem;
+        }
+    </style>
+</head>
+<body>
+    <div class="app-container">
+        <!-- Header -->
+        <div class="header">
+            <h3 style="margin: 0;">{{ title }}</h3>
+            <div class="ms-auto">
+                <span id="status-indicator"></span>
+            </div>
+        </div>
+        
+        <!-- Aside Navigation -->
+        <div class="aside">
+            <div class="text-center py-3">
+                <button class="btn btn-sm btn-primary instance-btn" onclick="showHome()">Home</button>
+            </div>
+            <div id="instance-list">
+                {% for instance in instances %}
+                <div class="text-center py-2">
+                    <button class="btn btn-sm btn-outline-primary instance-btn" 
+                            onclick="selectInstance('{{ instance }}')">{{ instance }}</button>
+                </div>
+                {% endfor %}
+            </div>
+        </div>
+        
+        <!-- Menu -->
+        <div class="menu">
+            <div id="menu-content">
+                <button class="btn btn-sm btn-menu w-100 mb-2" onclick="showOverview()">Overview</button>
+                <button class="btn btn-sm btn-menu w-100 mb-2" onclick="showConfig()">Config</button>
+                <button class="btn btn-sm btn-menu w-100 mb-2" onclick="showLogs()">Logs</button>
+            </div>
+        </div>
+        
+        <!-- Main Content -->
+        <div class="content">
+            <div id="main-content">
+                <h2>Welcome to ArisuAutoSweeper</h2>
+                <p>Select an instance from the sidebar to get started.</p>
+                
+                <div class="card">
+                    <div class="card-body">
+                        <h5 class="card-title">System Information</h5>
+                        <div id="system-info">Loading...</div>
+                    </div>
+                </div>
+                
+                <div class="card">
+                    <div class="card-body">
+                        <h5 class="card-title">Language & Theme</h5>
+                        <div class="mb-3">
+                            <label class="form-label">Language:</label>
+                            <select class="form-select" id="language-select" onchange="changeLanguage()">
+                                <option value="zh-CN" {% if language == 'zh-CN' %}selected{% endif %}>简体中文</option>
+                                <option value="en-US" {% if language == 'en-US' %}selected{% endif %}>English</option>
+                            </select>
+                        </div>
+                        <div class="mb-3">
+                            <label class="form-label">Theme:</label>
+                            <select class="form-select" id="theme-select" onchange="changeTheme()">
+                                <option value="default" {% if theme != 'dark' %}selected{% endif %}>Light</option>
+                                <option value="dark" {% if theme == 'dark' %}selected{% endif %}>Dark</option>
+                            </select>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+    
+    <!-- Bootstrap JS -->
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
+    
+    <!-- Custom JavaScript -->
+    <script>
+        let currentInstance = null;
+        let ws = null;
+        
+        // Load system info on startup
+        async function loadSystemInfo() {
+            try {
+                const response = await fetch('/api/system/info');
+                const data = await response.json();
+                document.getElementById('system-info').innerHTML = `
+                    <p><strong>Version:</strong> ${data.version}</p>
+                    <p><strong>Language:</strong> ${data.language}</p>
+                    <p><strong>Theme:</strong> ${data.theme}</p>
+                `;
+            } catch (error) {
+                console.error('Error loading system info:', error);
+            }
+        }
+        
+        function showHome() {
+            document.getElementById('main-content').innerHTML = `
+                <h2>Welcome to ArisuAutoSweeper</h2>
+                <p>Select an instance from the sidebar to get started.</p>
+            `;
+            loadSystemInfo();
+        }
+        
+        async function selectInstance(instance) {
+            currentInstance = instance;
+            document.getElementById('main-content').innerHTML = `
+                <h2>${instance}</h2>
+                <div id="instance-overview">Loading...</div>
+            `;
+            await loadInstanceOverview(instance);
+        }
+        
+        async function loadInstanceOverview(instance) {
+            try {
+                const statusResponse = await fetch(`/api/process/${instance}/status`);
+                const status = await statusResponse.json();
+                
+                const alive = status.alive;
+                const statusClass = alive ? 'status-running' : 'status-stopped';
+                const statusText = alive ? 'Running' : 'Stopped';
+                
+                document.getElementById('instance-overview').innerHTML = `
+                    <div class="card">
+                        <div class="card-body">
+                            <h5 class="card-title">Status</h5>
+                            <p>Status: <span class="status-badge ${statusClass}">${statusText}</span></p>
+                            <div class="btn-group" role="group">
+                                <button class="btn btn-success" onclick="startProcess('${instance}')">Start</button>
+                                <button class="btn btn-danger" onclick="stopProcess('${instance}')">Stop</button>
+                                <button class="btn btn-warning" onclick="restartProcess('${instance}')">Restart</button>
+                            </div>
+                        </div>
+                    </div>
+                `;
+            } catch (error) {
+                console.error('Error loading instance:', error);
+                document.getElementById('instance-overview').innerHTML = `
+                    <div class="alert alert-danger">Error loading instance information</div>
+                `;
+            }
+        }
+        
+        async function startProcess(instance) {
+            try {
+                const response = await fetch(`/api/process/${instance}/start`, {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({})
+                });
+                const data = await response.json();
+                alert(data.message);
+                await loadInstanceOverview(instance);
+            } catch (error) {
+                alert('Error starting process: ' + error);
+            }
+        }
+        
+        async function stopProcess(instance) {
+            try {
+                const response = await fetch(`/api/process/${instance}/stop`, {
+                    method: 'POST'
+                });
+                const data = await response.json();
+                alert(data.message);
+                await loadInstanceOverview(instance);
+            } catch (error) {
+                alert('Error stopping process: ' + error);
+            }
+        }
+        
+        async function restartProcess(instance) {
+            try {
+                const response = await fetch(`/api/process/${instance}/restart`, {
+                    method: 'POST'
+                });
+                const data = await response.json();
+                alert(data.message);
+                await loadInstanceOverview(instance);
+            } catch (error) {
+                alert('Error restarting process: ' + error);
+            }
+        }
+        
+        function showOverview() {
+            if (currentInstance) {
+                loadInstanceOverview(currentInstance);
+            } else {
+                alert('Please select an instance first');
+            }
+        }
+        
+        function showConfig() {
+            document.getElementById('main-content').innerHTML = `
+                <h2>Configuration</h2>
+                <p>Configuration editor is under development.</p>
+            `;
+        }
+        
+        function showLogs() {
+            if (!currentInstance) {
+                alert('Please select an instance first');
+                return;
+            }
+            
+            document.getElementById('main-content').innerHTML = `
+                <h2>Logs - ${currentInstance}</h2>
+                <div class="log-container" id="log-output">
+                    <div>Connecting to log stream...</div>
+                </div>
+            `;
+            
+            // Connect WebSocket for logs
+            connectLogStream(currentInstance);
+        }
+        
+        function connectLogStream(instance) {
+            const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
+            const wsUrl = `${protocol}//${window.location.host}/ws/logs/${instance}`;
+            
+            ws = new WebSocket(wsUrl);
+            
+            ws.onopen = () => {
+                document.getElementById('log-output').innerHTML = '<div>Connected to log stream.</div>';
+            };
+            
+            ws.onmessage = (event) => {
+                const logOutput = document.getElementById('log-output');
+                if (logOutput) {
+                    const data = JSON.parse(event.data);
+                    logOutput.innerHTML += `<div>[${data.type}] ${JSON.stringify(data)}</div>`;
+                    logOutput.scrollTop = logOutput.scrollHeight;
+                }
+            };
+            
+            ws.onerror = (error) => {
+                console.error('WebSocket error:', error);
+            };
+            
+            ws.onclose = () => {
+                console.log('WebSocket connection closed');
+            };
+        }
+        
+        async function changeLanguage() {
+            const language = document.getElementById('language-select').value;
+            try {
+                await fetch('/api/system/language', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ language })
+                });
+                location.reload();
+            } catch (error) {
+                alert('Error changing language: ' + error);
+            }
+        }
+        
+        async function changeTheme() {
+            const theme = document.getElementById('theme-select').value;
+            try {
+                await fetch('/api/system/theme', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ theme })
+                });
+                location.reload();
+            } catch (error) {
+                alert('Error changing theme: ' + error);
+            }
+        }
+        
+        // Initialize
+        window.addEventListener('load', () => {
+            loadSystemInfo();
+        });
+    </script>
+</body>
+</html>

module/webui/fastapi_backend/websocket_handler.py

@@ -0,0 +1,114 @@
+"""
+WebSocket handler for real-time log streaming
+"""
+import asyncio
+from typing import Set
+from fastapi import APIRouter, WebSocket, WebSocketDisconnect
+from module.webui.process_manager import ProcessManager
+from module.logger import logger
+
+router = APIRouter()
+
+
+class ConnectionManager:
+    """Manage WebSocket connections"""
+    
+    def __init__(self):
+        self.active_connections: Set[WebSocket] = set()
+    
+    async def connect(self, websocket: WebSocket):
+        await websocket.accept()
+        self.active_connections.add(websocket)
+    
+    def disconnect(self, websocket: WebSocket):
+        self.active_connections.discard(websocket)
+    
+    async def broadcast(self, message: str):
+        for connection in self.active_connections.copy():
+            try:
+                await connection.send_text(message)
+            except Exception:
+                self.disconnect(connection)
+
+
+manager = ConnectionManager()
+
+
+@router.websocket("/logs/{instance_name}")
+async def websocket_logs(websocket: WebSocket, instance_name: str):
+    """WebSocket endpoint for streaming logs"""
+    await manager.connect(websocket)
+    
+    try:
+        alas = ProcessManager.get_manager(instance_name)
+        
+        # Send initial connection message
+        await websocket.send_json({
+            "type": "connected",
+            "instance": instance_name
+        })
+        
+        # Keep connection alive and send log updates
+        while True:
+            try:
+                # Check if process is alive
+                if hasattr(alas, 'alive') and alas.alive:
+                    await websocket.send_json({
+                        "type": "status",
+                        "alive": True,
+                        "state": alas.state
+                    })
+                
+                # Wait a bit before next update
+                await asyncio.sleep(1)
+                
+                # Check if client sent any message (to keep connection alive)
+                try:
+                    data = await asyncio.wait_for(websocket.receive_text(), timeout=0.1)
+                    if data == "ping":
+                        await websocket.send_text("pong")
+                except asyncio.TimeoutError:
+                    pass
+                    
+            except Exception as e:
+                logger.error(f"Error in WebSocket loop: {e}")
+                break
+                
+    except WebSocketDisconnect:
+        logger.info(f"WebSocket disconnected for {instance_name}")
+    except Exception as e:
+        logger.exception(f"WebSocket error: {e}")
+    finally:
+        manager.disconnect(websocket)
+
+
+@router.websocket("/system")
+async def websocket_system(websocket: WebSocket):
+    """WebSocket endpoint for system-wide updates"""
+    await manager.connect(websocket)
+    
+    try:
+        await websocket.send_json({
+            "type": "connected",
+            "message": "System WebSocket connected"
+        })
+        
+        # Keep connection alive
+        while True:
+            try:
+                data = await asyncio.wait_for(websocket.receive_text(), timeout=10)
+                if data == "ping":
+                    await websocket.send_text("pong")
+            except asyncio.TimeoutError:
+                # Send heartbeat
+                await websocket.send_json({"type": "heartbeat"})
+            except Exception as e:
+                logger.error(f"Error in system WebSocket: {e}")
+                break
+                
+    except WebSocketDisconnect:
+        logger.info("System WebSocket disconnected")
+    except Exception as e:
+        logger.exception(f"System WebSocket error: {e}")
+    finally:
+        manager.disconnect(websocket)

requirements-in.txt

@@ -27,12 +27,12 @@ pponnxcr==2.0
 
 # Webui
 pywebio==1.6.2
-starlette==0.14.2
+starlette>=0.27.0
-uvicorn[standard]==0.17.6
+uvicorn[standard]>=0.20.0
 aiofiles
 fastapi>=0.100.0
 python-multipart
-websockets
+jinja2>=3.0.0
 
 # GUI
 customtkinter