app.py

import gradio as gr
import os
import pandas as pd
from PIL import Image

# ----- Config -----
BASE_DIR = "data"
ASSETS_DIR = "assets"
DEFAULT_MAP = os.path.join(ASSETS_DIR, "default_map.jpg")
PRODUCT_IMAGE_MAP = {
    "shampoo": os.path.join(ASSETS_DIR, "shampoo_map.jpg"),
    "curd": os.path.join(ASSETS_DIR, "curd_map.jpg"),
    "ghee": os.path.join(ASSETS_DIR, "ghee_map.jpg")
}

# ----- Utilities -----
def get_subfolders(path):
    try:
        return sorted([f for f in os.listdir(path) if os.path.isdir(os.path.join(path, f))])
    except Exception as e:
        print(f"❌ Error reading subfolders from {path}: {e}")
        return []

def get_csv_files(path):
    try:
        return sorted([f[:-4] for f in os.listdir(path) if f.endswith(".csv")])
    except Exception as e:
        print(f"❌ Error reading CSVs from {path}: {e}")
        return []

def get_quantities_from_csv(path):
    try:
        df = pd.read_csv(path)
        if df.empty or "Quantity" not in df.columns:
            return gr.update(choices=[], visible=False), {}
        return gr.update(choices=df["Quantity"].dropna().tolist(), visible=True), df.to_dict()
    except Exception as e:
        print(f"❌ Error loading CSV: {e}")
        return gr.update(choices=[], visible=False), {}

def display_quantity_info(quantity, data_dict):
    try:
        df = pd.DataFrame(data_dict)
        row = df[df["Quantity"] == quantity].iloc[0]
        if str(row["In Stock"]).strip().lower() == "yes":
            msg = (
                f"✅ {quantity} is available!\n"
                f"• Floor: {row['Floor']}\n"
                f"• Aisle: {row['Aisle']}\n"
                f"• Price: ₹{row['Price']}"
            )
            if "Offer" in row and pd.notna(row["Offer"]) and row["Offer"].strip():
                msg += f"\n• 🎉 Offer: {row['Offer']}"
            return msg
        else:
            return f"❌ Sorry, {quantity} is currently not in stock."
    except Exception as e:
        return f"⚠️ Error: {e}"

def get_product_image(product_name):
    lower_name = product_name.strip().lower()
    return Image.open(PRODUCT_IMAGE_MAP.get(lower_name, DEFAULT_MAP))

def reset_all():
    return (
        None, None, None, None, None, None, None,
        gr.update(choices=[], visible=False), "", {}, Image.open(DEFAULT_MAP)
    )

# ----- UI -----
with gr.Blocks(title="RetailGenie") as demo:
    gr.Markdown("# 🧞‍♂️ RetailGenie – In-Store Smart Assistant")

    with gr.Tabs():
        with gr.TabItem("🧭 Navigator"):
            with gr.Row():
                country = gr.Dropdown(label="🌍 Country", choices=get_subfolders(BASE_DIR), interactive=True)
                state = gr.Dropdown(label="🏙️ State", choices=[], interactive=True)
                city = gr.Dropdown(label="🏘️ City", choices=[], interactive=True)
                store = gr.Dropdown(label="🏪 Store", choices=[], interactive=True)
                category = gr.Dropdown(label="🛍️ Category", choices=[], interactive=True)
                product = gr.Dropdown(label="📦 Product", choices=[], interactive=True)
                brand = gr.Dropdown(label="🏷️ Brand", choices=[], interactive=True)
                quantity = gr.Dropdown(label="🔢 Quantity", visible=False, interactive=True)

            result = gr.Textbox(label="🔍 Product Info", lines=5)
            data_state = gr.State()
            store_map = gr.Image(value=Image.open(DEFAULT_MAP), type="pil", label="🗺️ Store Map")
            reset_btn = gr.Button("🔄 Reset All")

            # Dropdown chaining
            country.change(lambda c: gr.update(choices=get_subfolders(os.path.join(BASE_DIR, c)) if c else [], value=None), inputs=country, outputs=state)
            state.change(lambda c, s: gr.update(choices=get_subfolders(os.path.join(BASE_DIR, c, s)) if c and s else [], value=None), inputs=[country, state], outputs=city)
            city.change(lambda c, s, ci: gr.update(choices=get_subfolders(os.path.join(BASE_DIR, c, s, ci)) if c and s and ci else [], value=None), inputs=[country, state, city], outputs=store)
            store.change(lambda c, s, ci, st: gr.update(choices=get_subfolders(os.path.join(BASE_DIR, c, s, ci, st)) if all([c, s, ci, st]) else [], value=None), inputs=[country, state, city, store], outputs=category)
            category.change(lambda c, s, ci, st, cat: gr.update(choices=get_subfolders(os.path.join(BASE_DIR, c, s, ci, st, cat)) if all([c, s, ci, st, cat]) else [], value=None), inputs=[country, state, city, store, category], outputs=product)
            product.change(lambda c, s, ci, st, cat, prod: gr.update(choices=get_csv_files(os.path.join(BASE_DIR, c, s, ci, st, cat, prod)) if all([c, s, ci, st, cat, prod]) else [], value=None), inputs=[country, state, city, store, category, product], outputs=brand)

            brand.change(lambda c, s, ci, st, cat, prod, b: get_quantities_from_csv(os.path.join(BASE_DIR, c, s, ci, st, cat, prod, f"{b}.csv")) if all([c, s, ci, st, cat, prod, b]) else (gr.update(choices=[], visible=False), {}), inputs=[country, state, city, store, category, product, brand], outputs=[quantity, data_state])

            quantity.change(display_quantity_info, inputs=[quantity, data_state], outputs=result)

            product.change(fn=get_product_image, inputs=product, outputs=store_map)

            reset_btn.click(reset_all, inputs=[], outputs=[country, state, city, store, category, product, brand, quantity, result, data_state, store_map])

        with gr.TabItem("🎁 Smart Suggestions"):
            gr.Markdown("### 🤖 Ask RetailGenie for Recommendations")
            suggestion_input = gr.Textbox(label="Ask something like:", placeholder="Gift items under 500", lines=1)
            suggest_btn = gr.Button("💡 Get Suggestions")
            suggestions_output = gr.Textbox(label="📝 Suggestions", lines=10)

            suggest_btn.click(suggest_items, inputs=suggestion_input, outputs=suggestions_output)

demo.launch()