import os
import requests
import cv2
import numpy as np

BASE_URL = os.environ.get(
    "ID_API_URL",
    "http://127.0.0.1:8082"
)

ENDPOINTS = {
    "id": f"{BASE_URL}/api/check_id",
    "credit": f"{BASE_URL}/api/check_credit",
    "mrz": f"{BASE_URL}/api/check_mrz",
}


def _load_image(image):
    if image is None:
        return None
    if isinstance(image, str):
        img = cv2.imread(image)
        if img is None:
            return None
        return img
    return image


def _check_document(image, endpoint_key: str) -> dict:
    img = _load_image(image)
    if img is None:
        return {"error": "No image provided"}

    success, img_encoded = cv2.imencode('.jpg', img, [cv2.IMWRITE_JPEG_QUALITY, 95])
    if not success:
        return {"error": "Failed to encode image"}

    url = ENDPOINTS.get(endpoint_key)
    if not url:
        return {"error": f"Unknown endpoint: {endpoint_key}"}

    try:
        response = requests.post(
            url,
            files={"image": ("image.jpg", img_encoded.tobytes(), "image/jpeg")},
            timeout=30
        )
        response.raise_for_status()
        return response.json()
    except requests.exceptions.ConnectionError:
        return {"error": f"Cannot connect to server at {BASE_URL}. Make sure the SDK server is running."}
    except requests.exceptions.Timeout:
        return {"error": "Request timed out"}
    except requests.exceptions.RequestException as e:
        return {"error": f"API request failed: {str(e)}"}


def check_id(image) -> dict:
    return _check_document(image, "id")


def check_credit(image) -> dict:
    return _check_document(image, "credit")


def check_mrz(image) -> dict:
    return _check_document(image, "mrz")