import gradio as gr
import torch
import re
from transformers import pipeline

# Load fine-tuned NER model from Hugging Face Hub
model_name = "luxury-fashion-ner"
ner_pipeline = pipeline("ner", model=model_name, tokenizer=model_name)

# Regex for extracting price
price_pattern = re.compile(r'(\bunder\b|\babove\b|\bbelow\b|\bbetween\b)?\s?(\d{1,5})\s?(AED|USD|EUR)?', re.IGNORECASE)

# Keywords for gender extraction
gender_keywords = ["men", "male", "women", "female", "unisex"]

def extract_attributes(query):
    """
    Extract structured fashion attributes dynamically using the fine-tuned NER model.
    """
    structured_output = {"Brand": "Unknown", "Category": "Unknown", "Gender": "Unknown", "Price": "Unknown"}

    # Run NER model on query
    entities = ner_pipeline(query)

    for entity in entities:
        entity_text = entity["word"].replace("##", "")  # Fix tokenization artifacts
        entity_label = entity["entity"]

        if "ORG" in entity_label:  # Organization = Brand
            structured_output["Brand"] = entity_text
        elif "MISC" in entity_label:  # Miscellaneous = Category
            structured_output["Category"] = entity_text
        elif "LOC" in entity_label:  # Locations (sometimes used for brands)
            structured_output["Brand"] = entity_text

    # Extract gender
    for gender in gender_keywords:
        if gender in query.lower():
            structured_output["Gender"] = gender.capitalize()
            break

    # Extract price
    price_match = price_pattern.search(query)
    if price_match:
        condition, amount, currency = price_match.groups()
        structured_output["Price"] = f"{condition.capitalize() if condition else ''} {amount} {currency if currency else 'AED'}".strip()

    return structured_output

# Define Gradio UI
def parse_query(user_query):
    """
    Parses fashion-related queries into structured attributes.
    """
    parsed_output = extract_attributes(user_query)
    return parsed_output  # JSON output

# Create Gradio Interface
with gr.Blocks() as demo:
    gr.Markdown("# 🛍️ Luxury Fashion Query Parser using Fine-Tuned NER Model")

    query_input = gr.Textbox(label="Enter your search query", placeholder="e.g., Gucci men’s perfume under 200AED")
    output_box = gr.JSON(label="Parsed Output")

    parse_button = gr.Button("Parse Query")
    parse_button.click(parse_query, inputs=[query_input], outputs=[output_box])

demo.launch()