#!/usr/bin/env python
# -*- coding: utf-8 -*-

import requests
import json

# --- Configuration ---
# The base URL of your running FastAPI service
BASE_URL = "http://127.0.0.1:8000"

# The endpoint we want to test
ENDPOINT = "/generate_plan"

# The user prompt we will send for the test
TEST_PROMPT = "无人机起飞后移动到学生宿舍投放救援物资"

def test_generate_plan():
    """
    Sends a request to the /generate_plan endpoint and validates the response.
    """
    url = BASE_URL + ENDPOINT
    payload = {"user_prompt": TEST_PROMPT}
    headers = {"Content-Type": "application/json"}

    print("--- API Test: Generate Plan ---")
    print(f"✅ URL: {url}")
    print(f"✅ Sending Prompt: \"{TEST_PROMPT}\"")

    try:
        # Send the POST request
        response = requests.post(url, data=json.dumps(payload), headers=headers)
        
        # Check for HTTP errors (e.g., 404, 500)
        response.raise_for_status()

        # Parse the JSON response
        data = response.json()

        print("✅ Received Response:")
        print(json.dumps(data, indent=2, ensure_ascii=False))

        # --- Validation ---
        print("\n--- Validation Checks ---")
        
        # 1. Check if the response is a dictionary
        if isinstance(data, dict):
            print("PASS: Response is a valid JSON object.")
        else:
            print("FAIL: Response is not a valid JSON object.")
            return

        # 2. Check for the existence of the 'root' key
        if "root" in data and isinstance(data['root'], dict):
            print("PASS: Response contains a valid 'root' key.")
        else:
            print("FAIL: Response does not contain a valid 'root' key.")

        # 3. Check for the existence and format of the 'visualization_url' key
        if "visualization_url" in data and data["visualization_url"].endswith(".png"):
            print(f"PASS: Response contains a valid 'visualization_url': {data['visualization_url']}")
        else:
            print("FAIL: Response does not contain a valid 'visualization_url'.")

    except requests.exceptions.RequestException as e:
        print(f"\n❌ TEST FAILED: Could not connect to the server.")
        print("   Please make sure the backend service is running.")
        print(f"   Error details: {e}")
    except json.JSONDecodeError:
        print(f"\n❌ TEST FAILED: The server response was not valid JSON.")
        print(f"   Response text: {response.text}")
    except Exception as e:
        print(f"\n❌ TEST FAILED: An unexpected error occurred: {e}")

if __name__ == "__main__":
    test_generate_plan()