import gradio as gr
from PIL import Image, ImageEnhance, ImageOps
import easyocr
import re
from datetime import datetime
import pytz

# Initialize EasyOCR reader
reader = easyocr.Reader(['en'])

# Preprocessing to enhance image for OCR
def enhance_image(image):
    image = image.convert("L")  # Grayscale
    image = ImageOps.invert(image)  # Invert
    image = ImageEnhance.Contrast(image).enhance(2.0)
    image = ImageEnhance.Sharpness(image).enhance(2.5)
    image = image.resize((image.width * 2, image.height * 2))  # Enlarge
    return image

# Weight detection function
def detect_weight(image):
    try:
        processed_image = enhance_image(image)

        # OCR using EasyOCR
        result = reader.readtext(np.array(processed_image), detail=0)
        full_text = " ".join(result)

        # Extract number with decimal point
        match = re.search(r"(\d{1,4}\.\d{1,4})", full_text)
        weight = match.group(1) if match else "Not detected"

        # Get IST time
        ist = pytz.timezone('Asia/Kolkata')
        current_time = datetime.now(ist).strftime("%Y-%m-%d %H:%M:%S")

        return f"Weight: {weight} kg\nCaptured At: {current_time} (IST)", image

    except Exception as e:
        return f"Error: {str(e)}", image

# Gradio interface
interface = gr.Interface(
    fn=detect_weight,
    inputs=gr.Image(type="pil", label="Upload or Capture Image"),
    outputs=[gr.Textbox(label="Weight Info"), gr.Image(label="Snapshot")],
    title="⚖️ Accurate Auto Weight Detector",
    description="Detects full decimal weight (e.g., 52.75 kg) using EasyOCR and shows timestamp (IST)"
)

interface.launch()