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import sys
import tempfile
from pathlib import Path
from fastapi import FastAPI, File, HTTPException, UploadFile
from fastapi.middleware.cors import CORSMiddleware
from gradio_client import Client, handle_file
from pydantic import BaseModel
# ============================================================
# PROJECT PATH
# ============================================================
PROJECT_ROOT = Path(__file__).resolve().parent.parent
# Allow Python to find:
# oosc/rights_navigator/
sys.path.append(str(PROJECT_ROOT))
# ============================================================
# RIGHTS NAVIGATOR
# ============================================================
from rights_navigator.rights_navigator import get_rights_response
# ============================================================
# FASTAPI APP
# ============================================================
app = FastAPI(
title="Civic & RTI Hub API"
)
# ============================================================
# CORS
# ============================================================
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
# ============================================================
# HUGGING FACE TOKEN
# ============================================================
HF_TOKEN = os.getenv("HF_TOKEN")
# ============================================================
# HUGGING FACE SPACES
# ============================================================
# Friend's PDF Simplifier
SIMPLIFIER_SPACE_ID = "Ronak0/RC"
# Friend's RTI Drafter
DRAFTER_SPACE_ID = "Ronak0/rti-drafter"
# ============================================================
# CLIENTS
# ============================================================
# IMPORTANT:
# Do NOT connect to the Spaces when the server starts.
#
# They will be initialized only when /simplify or /draft
# is actually called.
simplifier_client = None
drafter_client = None
# ============================================================
# LAZY LOAD - PDF SIMPLIFIER
# ============================================================
def get_simplifier_client():
global simplifier_client
if simplifier_client is None:
print("Connecting to PDF Simplifier Space...")
simplifier_client = Client(
SIMPLIFIER_SPACE_ID,
token=HF_TOKEN
)
print("PDF Simplifier connected.")
return simplifier_client
# ============================================================
# LAZY LOAD - RTI DRAFTER
# ============================================================
def get_drafter_client():
global drafter_client
if drafter_client is None:
print("Connecting to RTI Drafter Space...")
drafter_client = Client(
DRAFTER_SPACE_ID,
token=HF_TOKEN
)
print("RTI Drafter connected.")
return drafter_client
# ============================================================
# REQUEST MODELS
# ============================================================
class DraftRequest(BaseModel):
prompt: str
class RightsRequest(BaseModel):
grievance: str
# ============================================================
# HEALTH CHECK
# ============================================================
@app.get("/")
async def root():
return {
"status": "online",
"service": "Civic & RTI Hub API",
"endpoints": [
"/simplify",
"/draft",
"/rights"
]
}
# ============================================================
# PDF SIMPLIFIER
# ============================================================
@app.post("/simplify")
@app.post("/api/simplify")
async def simplify_pdf(
file: UploadFile = File(...)
):
# --------------------------------------------------------
# Validate PDF
# --------------------------------------------------------
if not file.filename.lower().endswith(".pdf"):
raise HTTPException(
status_code=400,
detail="Must be a PDF file."
)
# --------------------------------------------------------
# Save uploaded PDF temporarily
# --------------------------------------------------------
with tempfile.NamedTemporaryFile(
delete=False,
suffix=".pdf"
) as tmp:
tmp.write(
await file.read()
)
tmp_path = tmp.name
try:
# ----------------------------------------------------
# Connect only when this endpoint is used
# ----------------------------------------------------
client = get_simplifier_client()
# ----------------------------------------------------
# Call friend's Hugging Face Space
# ----------------------------------------------------
raw_result = client.predict(
pdf_file=handle_file(tmp_path),
api_name="/simplify_document"
)
# ----------------------------------------------------
# Format response
# ----------------------------------------------------
points = [
p.strip()
for p in raw_result.split("\n\n")
if p.strip()
]
return {
"simplified_points": points
}
except Exception as e:
raise HTTPException(
status_code=500,
detail=f"PDF simplifier error: {str(e)}"
)
finally:
# ----------------------------------------------------
# Delete temporary PDF
# ----------------------------------------------------
if os.path.exists(tmp_path):
os.remove(tmp_path)
# ============================================================
# RTI DRAFTER
# ============================================================
@app.post("/draft")
@app.post("/api/draft")
async def draft_rti_endpoint(
request: DraftRequest
):
# --------------------------------------------------------
# Validate request
# --------------------------------------------------------
if not request.prompt.strip():
raise HTTPException(
status_code=400,
detail="Prompt cannot be empty."
)
try:
# ----------------------------------------------------
# Connect only when this endpoint is used
# ----------------------------------------------------
client = get_drafter_client()
# ----------------------------------------------------
# Call friend's Hugging Face Space
# ----------------------------------------------------
draft_result = client.predict(
user_prompt=request.prompt,
api_name="/draft_rti"
)
return {
"draft": draft_result
}
except Exception as e:
raise HTTPException(
status_code=500,
detail=f"RTI drafter error: {str(e)}"
)
# ============================================================
# RIGHTS NAVIGATOR
# ============================================================
@app.post("/rights")
@app.post("/api/rights")
async def rights_navigator_endpoint(
request: RightsRequest
):
# --------------------------------------------------------
# Validate grievance
# --------------------------------------------------------
if not request.grievance.strip():
raise HTTPException(
status_code=400,
detail="Grievance cannot be empty."
)
try:
# ----------------------------------------------------
# Call YOUR Rights Navigator
# ----------------------------------------------------
result = get_rights_response(
request.grievance
)
return result
except Exception as e:
raise HTTPException(
status_code=500,
detail=f"Rights Navigator error: {str(e)}"
) |