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import re | |
from flask import request, jsonify, current_app | |
from PIL import Image, UnidentifiedImageError | |
from io import BytesIO | |
import base64 | |
import requests | |
from ..services.panServices.panOcr import process_results | |
import io | |
def ocrPan(mode, session): | |
try: | |
print("API HIT ************* PANOCR") | |
data = request.get_json() | |
if not data: | |
return jsonify({"error": "Invalid request payload"}), 400 | |
if mode == "prod": | |
if not data.get('image'): | |
return jsonify({"error": "Image data/buffer is required"}), 400 | |
#removing 'data:image/png,base64 ' from buffer. | |
imgBuffer = data.get('image') | |
imgBuffer = re.sub("^data:image/.+;base64,", "", imgBuffer) | |
# Adjust base64 string padding | |
if len(imgBuffer) % 4: | |
imgBuffer += '=' * (4 - len(imgBuffer) % 4) | |
try: | |
img_data = base64.b64decode(imgBuffer) | |
img = Image.open(BytesIO(img_data)) | |
img.verify() # Verify image format | |
img = Image.open(io.BytesIO(img_data)) # Re-open image after verification | |
except (base64.binascii.Error, ValueError) as decode_err: | |
return jsonify({"error": f"Image decoding failed: {str(decode_err)}"}), 400 | |
except UnidentifiedImageError: | |
return jsonify({"error": "Unable to identify image format."}), 400 | |
elif mode == "dev": | |
if not data.get('imgUrl'): | |
return jsonify({"error": "Image URL is required"}), 400 | |
img_url = data.get('imgUrl') | |
response = session.get(img_url) | |
response.raise_for_status() | |
img = Image.open(BytesIO(response.content)) | |
img.verify() # Verify image format | |
img = Image.open(BytesIO(response.content)) # Re-open image after verification | |
else: | |
return jsonify({"error": "Invalid mode configuration"}), 500 | |
# Check image format | |
if img.format not in ['JPEG', 'JPG', 'PNG']: | |
return jsonify({"error": "Invalid image format. Only JPG and PNG are supported."}), 400 | |
# Run detection | |
model = current_app.models.get('panModel') | |
results = model.predict(source=img, save=False) | |
extracted_data = process_results(results, img) | |
if extracted_data.get('statusCode') == 400: | |
return jsonify(extracted_data), 400 | |
return jsonify(extracted_data), 200 | |
except requests.RequestException as req_err: | |
return jsonify({"error": f"Image download failed: {str(req_err)}"}), 500 | |
except UnidentifiedImageError: | |
return jsonify({"error": "Unable to identify image format."}), 400 | |
except Exception as e: | |
current_app.logger.error(f"Unexpected error: {str(e)}") | |
return jsonify({"error": "An unexpected error occurred."}), 500 | |