import requests
import json
import random
import os
from datetime import datetime, timedelta

# --- Configuration ---
API_URL = "http://127.0.0.1:8000/measure"
IMAGE_DIR = "test_data"
IMAGE_NAME = "test1_post.png"  # The name of the image file you will provide

# --- Pre-defined list of sample metadata ---
METADATA_SAMPLES = [
    {
        "ship_id": "IMO9321483",
        "timestamp": (datetime.utcnow() - timedelta(hours=2)).isoformat() + "Z",
        "latitude": 1.2646,
        "longitude": 103.8357,
        "camera_id": "CAM-04"
    },
    {
        "ship_id": "IMO9839272",
        "timestamp": (datetime.utcnow() - timedelta(minutes=45)).isoformat() + "Z",
        "latitude": 51.9432,
        "longitude": 4.1497,
        "camera_id": "JETTY-7B"
    },
    {
        "ship_id": "IMO9450259",
        "timestamp": (datetime.utcnow() - timedelta(days=1)).isoformat() + "Z",
        "latitude": 31.2244,
        "longitude": 121.4737,
        "camera_id": "FIXED-PIER-3"
    },
    {
        "ship_id": "IMO9226788",
        "timestamp": datetime.utcnow().isoformat() + "Z",
        "latitude": 33.7542,
        "longitude": -118.2165,
        "camera_id": "DRONE-ALPHA"
    }
]

def run_test():
    """Runs a single integration test against the API."""
    image_path = os.path.join(IMAGE_DIR, IMAGE_NAME)

    # 1. Check if the image file exists
    if not os.path.exists(image_path):
        print(f"Error: Test image not found at '{image_path}'")
        print("Please place your test image there before running the script.")
        return

    # 2. Randomly select a metadata object
    metadata = random.choice(METADATA_SAMPLES)
    print(f"Selected metadata for this test run:\n{json.dumps(metadata, indent=2)}\n")

    # 3. Open the image file and send the request
    try:
        with open(image_path, "rb") as image_file:
            files = {"image": (IMAGE_NAME, image_file, "image/png")}
            form_data = {"metadata_json": json.dumps(metadata)}

            print(f"Sending request to {API_URL}...")
            response = requests.post(API_URL, files=files, data=form_data)

            # 4. Print the server's response
            print(f"\n--- Server Response ---")
            print(f"Status Code: {response.status_code}")
            if response.status_code == 200:
                print("Response JSON:")
                print(response.json())
            else:
                print("Error Response Text:")
                print(response.text)
            print("-----------------------")

    except requests.exceptions.ConnectionError as e:
        print(f"\nError: Connection to the API server failed.")
        print("Please ensure the main application is running (`python main.py`).")
        print(f"Details: {e}")
    except Exception as e:
        print(f"An unexpected error occurred: {e}")

if __name__ == "__main__":
    run_test()