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"""FastAPI application factory."""
from __future__ import annotations
import logging
import os
from pathlib import Path
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import HTMLResponse
from uipath.dev.server import UiPathDeveloperServer
logger = logging.getLogger(__name__)
STATIC_DIR = Path(__file__).parent / "static"
FRONTEND_DIR = Path(__file__).parent / "frontend"
_FALLBACK_HTML = """\
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>UiPath Developer Server</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
background: #0f172a; color: #e2e8f0; display: flex; align-items: center;
justify-content: center; min-height: 100vh; padding: 2rem; }
.card { background: #1e293b; border-radius: 12px; padding: 2.5rem;
max-width: 560px; width: 100%%; box-shadow: 0 4px 24px rgba(0,0,0,.4); }
h1 { font-size: 1.5rem; margin-bottom: .5rem; color: #f8fafc; }
.subtitle { color: #94a3b8; margin-bottom: 1.5rem; }
.status { background: #172033; border-radius: 8px; padding: 1rem 1.25rem;
margin-bottom: 1.5rem; border-left: 4px solid %(accent)s; }
.status h2 { font-size: .875rem; text-transform: uppercase; letter-spacing: .05em;
color: %(accent)s; margin-bottom: .5rem; }
.status p { color: #cbd5e1; font-size: .875rem; line-height: 1.6; }
code { background: #0f172a; padding: .15em .4em; border-radius: 4px;
font-size: .8125rem; color: #7dd3fc; }
.api-ok { color: #4ade80; font-weight: 600; }
a { color: #7dd3fc; text-decoration: none; }
a:hover { text-decoration: underline; }
</style>
</head>
<body>
<div class="card">
<h1>UiPath Developer Server</h1>
<p class="subtitle">The API is running. %(message)s</p>
<div class="status">
<h2>%(status_title)s</h2>
<p>%(status_body)s</p>
</div>
<p style="font-size:.875rem;color:#94a3b8;">
API docs: <a href="/docs">/docs</a> |
Entrypoints: <a href="/api/entrypoints">/api/entrypoints</a>
</p>
</div>
</body>
</html>
"""
def _fallback_html() -> str:
"""Return an informative HTML page when the frontend is not available."""
if not FRONTEND_DIR.exists():
return _FALLBACK_HTML % dict(
accent="#f59e0b",
message="The frontend is not included in this installation.",
status_title="No Frontend Source",
status_body=(
"The frontend source directory was not found. "
"If you installed from PyPI, the pre-built static files should "
"be included. Try reinstalling with "
"<code>pip install uipath-dev</code>."
),
)
return _FALLBACK_HTML % dict(
accent="#ef4444",
message="The frontend has not been built yet.",
status_title="Build Required",
status_body=(
"Run the following commands to build the frontend:<br><br>"
"<code>cd src/uipath/dev/server/frontend</code><br>"
"<code>npm install</code><br>"
"<code>npm run build</code><br><br>"
"Then restart the server. Check the server logs for build errors."
),
)
def create_app(server: UiPathDeveloperServer) -> FastAPI:
"""Create a FastAPI application wired to the given server instance."""
app = FastAPI(
title="UiPath Developer Server",
description="Web API and WebSocket backend for the UiPath Developer Console",
version="0.1.0",
)
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
# Store server reference on app state for route access
app.state.server = server
auth_enabled = os.environ.get("UIPATH_AUTH_ENABLED", "true").lower() not in (
"false",
"0",
"no",
)
# Read user's pyproject.toml from CWD (once at startup)
_user_project: dict[str, str | None] = {
"project_name": None,
"project_version": None,
"project_authors": None,
}
_pyproject_path = Path.cwd() / "pyproject.toml"
if _pyproject_path.is_file():
try:
import tomllib
with open(_pyproject_path, "rb") as f:
_pydata = tomllib.load(f)
_proj = _pydata.get("project", {})
_user_project["project_name"] = _proj.get("name")
_user_project["project_version"] = _proj.get("version")
_authors = _proj.get("authors")
if _authors and isinstance(_authors, list) and len(_authors) > 0:
_user_project["project_authors"] = (
_authors[0].get("name")
if isinstance(_authors[0], dict)
else str(_authors[0])
)
except Exception:
pass
# Config endpoint — tells the frontend which features are available
@app.get("/api/config", include_in_schema=False)
async def _config():
return {"auth_enabled": auth_enabled, **_user_project}
# Register routes
from uipath.dev.server.routes.entrypoints import router as entrypoints_router
from uipath.dev.server.routes.graph import router as graph_router
from uipath.dev.server.routes.reload import router as reload_router
from uipath.dev.server.routes.runs import router as runs_router
from uipath.dev.server.ws.handler import router as ws_router
if auth_enabled:
from uipath.dev.server.auth import restore_session
from uipath.dev.server.routes.auth import router as auth_router
app.include_router(auth_router, prefix="/api")
restore_session()
app.include_router(entrypoints_router, prefix="/api")
app.include_router(runs_router, prefix="/api")
app.include_router(graph_router, prefix="/api")
app.include_router(reload_router, prefix="/api")
app.include_router(ws_router)
# Auto-build frontend if source is available and build is stale
from uipath.dev.server.frontend_build import ensure_frontend_built
frontend_ready = ensure_frontend_built()
# Serve static frontend files if built, otherwise serve fallback page
if frontend_ready and (STATIC_DIR / "index.html").exists():
from fastapi.staticfiles import StaticFiles
app.mount("/", StaticFiles(directory=str(STATIC_DIR), html=True), name="static")
else:
fallback = _fallback_html()
@app.get("/", response_class=HTMLResponse)
async def _fallback_page():
return fallback
return app