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- """压缩机 3D 部件查看服务（FastAPI）。
- 接口：
- GET /api/models 可用模型列表
- GET /api/state?model=x 读取配色状态
- POST /api/state?model=x 保存配色状态
- GET /models/<file> GLB / glTF 模型文件
- GET /* 前端构建产物（frontend/dist），SPA 回退 index.html
- """
- from fastapi import FastAPI, HTTPException
- from fastapi.middleware.cors import CORSMiddleware
- from fastapi.responses import FileResponse
- from config import FRONTEND_DIST
- from routers import files, state
- app = FastAPI(title="压缩机 3D 部件查看服务", version="0.1.0")
- app.add_middleware(
- CORSMiddleware,
- allow_origins=["*"],
- allow_methods=["*"],
- allow_headers=["*"],
- )
- app.include_router(files.router)
- app.include_router(state.router)
- @app.get("/{full_path:path}")
- def serve_frontend(full_path: str) -> FileResponse:
- if full_path.startswith(("api/", "models/")):
- raise HTTPException(status_code=404, detail="Not Found")
- resolved_dist = FRONTEND_DIST.resolve()
- if full_path:
- candidate = (FRONTEND_DIST / full_path).resolve()
- if resolved_dist in candidate.parents and candidate.is_file():
- return FileResponse(candidate)
- index = FRONTEND_DIST / "index.html"
- if index.is_file():
- return FileResponse(index)
- raise HTTPException(status_code=404, detail="前端未构建：请先 cd 3d/frontend && npm run build")
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