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from fastapi import FastAPI, Form, Request
from fastapi.responses import HTMLResponse
from fastapi.templating import Jinja2Templates
from backend.api.fact_check import fact_check_claim
from backend.api.claims import classify_claim
from backend.api.tone_intent import detect_tone_and_intent
import json
app = FastAPI()
# Jinja2 templates for rendering HTML pages
templates = Jinja2Templates(directory="frontend")
from pathlib import Path
from fastapi.staticfiles import StaticFiles
BASE_DIR = Path(__file__).resolve().parent
STATIC_DIR = BASE_DIR.parent / "frontend" / "assets"
app.mount("/static", StaticFiles(directory=STATIC_DIR), name="static")
@app.get("/", response_class=HTMLResponse)
async def read_root(request: Request):
return templates.TemplateResponse("index.html", {"request": request})
@app.post("/process_claim")
async def process_claim(claim: str = Form(...)):
# Classify the claim
classification = classify_claim(claim)
classification_type = classification.get("category", "Unknown")
# Detect the tone and intent of the claim
tone_intent = detect_tone_and_intent(claim)
tone = tone_intent.get("tone", "Unknown")
intent = tone_intent.get("intent", "Unknown")
# fact-check the claim if it's factual and tone is positive
if classification_type in ["Factual Claim", "Misleading Claim", "Factoid"] and tone in ["Neutral", "Persuasive", "Humorous"]:
fact_check_result = fact_check_claim(claim)
verdict = fact_check_result.get("fact_check_result", "Unknown")
evidence = fact_check_result.get("evidence", "No evidence available.")
sources = fact_check_result.get("sources", [])
reasoning = fact_check_result.get("reasoning", "No reasoning available.")
else:
verdict = "Not Fact-Checked"
evidence = "Claim is either not factual or has a non-positive tone."
sources = []
reasoning = "The claim either isn’t factual or has a misleading tone, hence skipped from fact-checking."
return {
"claim": claim,
"classification": classification_type,
"tone": tone,
"intent": intent,
"fact_check_result": verdict,
"evidence": evidence,
"sources": sources,
"reasoning": reasoning
}
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