from fastapi import FastAPI, BackgroundTasks
from transformers import pipeline
import uuid

app = FastAPI()

# Загружаем легкую модель (она скачается сама при запуске)
pipe = pipeline("text-generation", model="gpt2")

tasks = {}

@app.post("/generate")
async def generate(prompt: str, background_tasks: BackgroundTasks):
    task_id = str(uuid.uuid4())
    tasks[task_id] = {"status": "pending", "result": None}
    
    def run_ai(tid, p):
        try:
            # Генерация 50 новых токенов
            res = pipe(p, max_new_tokens=50, truncation=True)
            tasks[tid] = {"status": "ready", "result": res[0]['generated_text']}
        except Exception as e:
            tasks[tid] = {"status": "error", "result": str(e)}

    background_tasks.add_task(run_ai, task_id, prompt)
    return {"task_id": task_id}

@app.get("/check/{task_id}")
async def check(task_id: str):
    return tasks.get(task_id, {"status": "not_found", "result": None})