import asyncio
import logging
import random
import typer
import httpx

CONTENT_LIST = [
    "¿Cuáles son los beneficios de una tarjeta de crédito?",
    "¿Cómo puedo abrir una cuenta de ahorros?",
    "¿Qué es una hipoteca y cómo funciona?",
    "¿Cuáles son las tasas de interés para un préstamo personal?",
    "¿Cómo puedo solicitar un préstamo para un coche?",
    "¿Qué es la banca en línea y cómo me registro?",
    "¿Cómo puedo reportar una tarjeta de crédito perdida o robada?",
    "¿Qué es el phishing y cómo puedo protegerme?",
    "¿Cuáles son los diferentes tipos de cuentas corrientes que ofrecen?",
    "¿Cómo puedo transferir dinero a una cuenta internacional?",
]

logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

app = typer.Typer()

async def call_rag_endpoint_task(client: httpx.AsyncClient, url: str):
    """A single task to send one request to the RAG endpoint."""
    question = random.choice(CONTENT_LIST)
    json_payload = {
        "sessionInfo": {
            "parameters": {
                "query": question
            }
        }
    }
    response = await client.post(url, json=json_payload)
    response.raise_for_status()  # Raise an exception for bad status codes
    response_data = response.json()
    response_text = response_data["sessionInfo"]["parameters"]["response"]
    logger.info(f"Question: {question[:50]}... Response: {response_text[:100]}...")

async def run_test(concurrency: int, url: str, timeout_seconds: float):
    """Continuously calls the RAG endpoint and tracks requests."""
    total_requests = 0
    
    logger.info(f"Starting diagnostic test with {concurrency} concurrent requests on endpoint '{url}'.")
    logger.info(f"Request timeout is set to {timeout_seconds} seconds.")
    logger.info("Press Ctrl+C to stop.")

    timeout = httpx.Timeout(timeout_seconds)
    async with httpx.AsyncClient(timeout=timeout) as client:
        while True:
            tasks = [call_rag_endpoint_task(client, url) for _ in range(concurrency)]
            
            try:
                await asyncio.gather(*tasks)
                total_requests += concurrency
                logger.info(f"Successfully completed batch. Total requests so far: {total_requests}")
            except httpx.TimeoutException as e:
                logger.error(f"A request timed out: {e.request.method} {e.request.url}")
                logger.error("Consider increasing the timeout with the --timeout option.")
                break
            except httpx.HTTPStatusError as e:
                logger.error(f"An HTTP error occurred: {e.response.status_code} - {e.request.method} {e.request.url}")
                logger.error(f"Response body: {e.response.text}")
                break
            except httpx.RequestError as e:
                logger.error(f"A request error occurred: {e.request.method} {e.request.url}")
                logger.error(f"Error details: {e}")
                break
            except Exception as e:
                logger.error("Caught an unexpected error. Stopping test.")
                print("\n--- STATS ---")
                print(f"Total successful requests: {total_requests}")
                print(f"Concurrent requests during failure: {concurrency}")
                print(f"Error Type: {e.__class__.__name__}")
                print(f"Error Details: {e}")
                print("-------------")
                break

@app.command()
def main(
    concurrency: int = typer.Option(
        10, "--concurrency", "-c", help="Number of concurrent requests to send in each batch."
    ),
    url: str = typer.Option(
        "http://127.0.0.1:8000/sigma-rag", "--url", "-u", help="The URL of the RAG endpoint to test."
    ),
    timeout_seconds: float = typer.Option(
        30.0, "--timeout", "-t", help="Request timeout in seconds."
    )
):
    try:
        asyncio.run(run_test(concurrency, url, timeout_seconds))
    except KeyboardInterrupt:
        logger.info("\nKeyboard interrupt received. Exiting.")

if __name__ == "__main__":
    app()