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from fastapi import FastAPI, UploadFile, File
import shutil
import os

from api.predictor import predict_logs
from api.shap_explainer import explain_logs

app = FastAPI(
    title="RTL Failure Prediction API",
    description="Predict RTL module failure risk from verification logs",
    version="1.0"
)


@app.get("/")
def health():
    return {"status": "running"}


@app.post("/predict_file")
async def predict_file(file: UploadFile = File(...)):

    path = f"temp_{file.filename}"

    with open(path, "wb") as buffer:
        shutil.copyfileobj(file.file, buffer)

    result = predict_logs(path)

    os.remove(path)

    return result


@app.post("/predict_single")
def predict_single(log_line: str):

    path = "temp_single.txt"

    with open(path, "w") as f:
        f.write(log_line)

    result = predict_logs(path)

    os.remove(path)

    return result


@app.post("/explain")
async def explain(file: UploadFile = File(...)):

    path = f"temp_{file.filename}"

    with open(path, "wb") as buffer:
        shutil.copyfileobj(file.file, buffer)

    result = explain_logs(path)

    os.remove(path)

    return result