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from fastapi import FastAPI, HTTPException, UploadFile, File
from fastapi.middleware.cors import CORSMiddleware
from pydantic import BaseModel, HttpUrl
from typing import Optional
import uvicorn
from services.analyzer import analyze_content
from services.text_extractor import extract_from_url, extract_from_document
app = FastAPI(
title="HateShield-BN API",
description="Bilingual Hate Speech Detection System",
version="1.0.0"
)
# CORS
app.add_middleware(
CORSMiddleware,
allow_origins=["http://localhost:5173", "http://localhost:3000","https://hate-shield-bn-frontend.vercel.app"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
# Request models
class TextRequest(BaseModel):
text: str
class URLRequest(BaseModel):
url: HttpUrl
# Routes
@app.get("/")
async def root():
return {
"message": "HateShield-BN API is running!",
"version": "1.0.0",
"endpoints": {
"text": "/api/analyze/text",
"url": "/api/analyze/url",
"document": "/api/analyze/document"
}
}
@app.post("/api/analyze/text")
async def analyze_text(request: TextRequest):
"""Analyze text for hate speech"""
try:
if not request.text or len(request.text.strip()) == 0:
raise HTTPException(status_code=400, detail="Text cannot be empty")
result = await analyze_content(request.text)
return result
except Exception as e:
print(f"Error analyzing text: {e}")
raise HTTPException(status_code=500, detail=str(e))
@app.post("/api/analyze/url")
async def analyze_url(request: URLRequest):
"""Analyze content from URL"""
try:
# Note: extract_from_url is now synchronous
text = extract_from_url(str(request.url))
if not text:
raise HTTPException(status_code=400, detail="Could not extract text from URL")
result = await analyze_content(text)
return result
except HTTPException:
raise
except Exception as e:
print(f"Error analyzing URL: {e}")
raise HTTPException(status_code=500, detail=str(e))
@app.post("/api/analyze/document")
async def analyze_document(file: UploadFile = File(...)):
"""Analyze uploaded document"""
try:
# Check file type
allowed_types = [".pdf", ".docx", ".txt"]
file_ext = f".{file.filename.split('.')[-1].lower()}"
if file_ext not in allowed_types:
raise HTTPException(
status_code=400,
detail=f"File type {file_ext} not supported. Allowed: {', '.join(allowed_types)}"
)
# Read file content
content = await file.read()
# Note: extract_from_document is now synchronous
text = extract_from_document(content, file_ext)
if not text:
raise HTTPException(status_code=400, detail="Could not extract text from document")
result = await analyze_content(text)
return result
except HTTPException:
raise
except Exception as e:
print(f"Error analyzing document: {e}")
raise HTTPException(status_code=500, detail=str(e))
@app.get("/health")
async def health_check():
return {"status": "healthy"}
if __name__ == "__main__":
uvicorn.run(
"main:app",
host="0.0.0.0",
port=8000,
reload=True
) |