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import os
import pandas as pd
import numpy as np
import plotly.express as px
import plotly.graph_objects as go
from langchain_community.vectorstores import Chroma
from langchain_huggingface import HuggingFaceEmbeddings
import umap.umap_ as umap

# ==========================================
# [์Šคํฌ๋ฆฝํŠธ ์„ค๋ช…]
# ๋ฒกํ„ฐ DB ๊ณ ๊ธ‰ ์‹œ๊ฐํ™” ๋„๊ตฌ (3D & Interactive)
# 1. ChromaDB์— ์ €์žฅ๋œ ๋ชจ๋“  ์ƒํ’ˆ ๋ฒกํ„ฐ๋ฅผ ๋กœ๋“œํ•ฉ๋‹ˆ๋‹ค.
# 2. UMAP ์•Œ๊ณ ๋ฆฌ์ฆ˜์œผ๋กœ 768์ฐจ์› ๋ฒกํ„ฐ๋ฅผ 3์ฐจ์›์œผ๋กœ ์ถ•์†Œํ•ฉ๋‹ˆ๋‹ค.
# 3. Plotly๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ํšŒ์ „/์คŒ์ด ๊ฐ€๋Šฅํ•œ 3D ์‚ฐ์ ๋„ HTML์„ ์ƒ์„ฑํ•ฉ๋‹ˆ๋‹ค.
# 4. (์„ ํƒ) ์งˆ๋ฌธ์„ ์ž…๋ ฅํ•˜๋ฉด, ์งˆ๋ฌธ ๋ฒกํ„ฐ์˜ ์œ„์น˜๋„ ํ•จ๊ป˜ ํ‘œ์‹œํ•ฉ๋‹ˆ๋‹ค.
# ==========================================

# --- ์„ค์ • ---
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
CHROMA_DB_PATH = os.path.join(BASE_DIR, '..', '..', 'data', 'chroma_db')
EMBEDDING_MODEL_PATH = os.path.join(BASE_DIR, '..', '..', 'models', 'snowflake-finetuned-hard')
OUTPUT_HTML_PATH = os.path.join(BASE_DIR, '..', '..', 'embedding_visualization_3d.html')

def visualize_3d(query_text=None):
    print("--- 3D ์ž„๋ฒ ๋”ฉ ์‹œ๊ฐํ™” ์‹œ์ž‘ ---")

    # 1. ๋ชจ๋ธ ๋ฐ DB ๋กœ๋“œ
    print(f"๋ชจ๋ธ ๋กœ๋“œ ์ค‘: {EMBEDDING_MODEL_PATH}")
    embeddings = HuggingFaceEmbeddings(
        model_name=EMBEDDING_MODEL_PATH,
        model_kwargs={'device': 'cuda'},
        encode_kwargs={'normalize_embeddings': True}
    )
    
    vectorstore = Chroma(
        persist_directory=CHROMA_DB_PATH,
        embedding_function=embeddings
    )
    
    # 2. ๋ฐ์ดํ„ฐ ์ถ”์ถœ
    print("DB์—์„œ ๋ฐ์ดํ„ฐ ์ถ”์ถœ ์ค‘...")
    data = vectorstore.get(include=['embeddings', 'metadatas', 'documents'])
    
    if data['embeddings'] is None or len(data['embeddings']) == 0:
        print("๋ฐ์ดํ„ฐ๊ฐ€ ์—†์Šต๋‹ˆ๋‹ค.")
        return

    vectors = np.array(data['embeddings'])
    metadatas = data['metadatas']
    documents = data['documents']
    
    # ๋ฉ”ํƒ€๋ฐ์ดํ„ฐ ์ •๋ฆฌ (DataFrame ์ƒ์„ฑ์šฉ)
    df_data = []
    for i, meta in enumerate(metadatas):
        df_data.append({
            'product_name': meta.get('product_name', 'Unknown'),
            'category': meta.get('category', 'Etc'),
            'brand': meta.get('brand', ''),
            'price': meta.get('price', 0),
            'text_preview': documents[i][:100] + "..." # ํˆดํŒ์šฉ ๋ฏธ๋ฆฌ๋ณด๊ธฐ
        })
    
    # 3. (์˜ต์…˜) ์งˆ๋ฌธ ๋ฒกํ„ฐ ์ถ”๊ฐ€
    if query_text:
        print(f"์งˆ๋ฌธ ๋ฒกํ„ฐ ์ƒ์„ฑ ์ค‘: '{query_text}'")
        query_vector = embeddings.embed_query(query_text)
        vectors = np.vstack([vectors, np.array(query_vector)])
        df_data.append({
            'product_name': f"โ“ ์งˆ๋ฌธ: {query_text}",
            'category': 'Query',
            'brand': '-',
            'price': 0,
            'text_preview': query_text
        })
        print("์งˆ๋ฌธ ๋ฒกํ„ฐ๊ฐ€ ๋ฐ์ดํ„ฐ์— ์ถ”๊ฐ€๋˜์—ˆ์Šต๋‹ˆ๋‹ค.")

    # 4. ์ฐจ์› ์ถ•์†Œ (UMAP 3D)
    print(f"์ฐจ์› ์ถ•์†Œ ์ค‘ (768 -> 3D)... ๋ฐ์ดํ„ฐ ๊ฐœ์ˆ˜: {len(vectors)}")
    reducer = umap.UMAP(n_components=3, n_neighbors=15, metric='cosine', random_state=42)
    projections = reducer.fit_transform(vectors)
    
    # DataFrame ์ƒ์„ฑ
    df = pd.DataFrame(df_data)
    df['x'] = projections[:, 0]
    df['y'] = projections[:, 1]
    df['z'] = projections[:, 2]

    # 5. ์‹œ๊ฐํ™” (Plotly 3D)
    print("3D ๊ทธ๋ž˜ํ”„ ์ƒ์„ฑ ์ค‘...")
    
    # ๊ธฐ๋ณธ ์‚ฐ์ ๋„ ์ƒ์„ฑ
    fig = px.scatter_3d(
        df, x='x', y='y', z='z',
        color='category',
        hover_data=['product_name', 'brand', 'price'],
        title='Nyang Chatbot Embedding Space (3D)',
        opacity=0.6
    )
    
    # ์  ํฌ๊ธฐ ์กฐ์ ˆ (์ „์ฒด์ ์œผ๋กœ ์ž‘๊ฒŒ)
    fig.update_traces(marker=dict(size=3))
    
    # ์งˆ๋ฌธ(Query) ์ ์ด ์žˆ๋‹ค๋ฉด ๋ณ„๋„๋กœ ๊ฐ•์กฐ
    if query_text:
        query_idx = df[df['category'] == 'Query'].index
        if not query_idx.empty:
            fig.add_trace(go.Scatter3d(
                x=df.loc[query_idx, 'x'],
                y=df.loc[query_idx, 'y'],
                z=df.loc[query_idx, 'z'],
                mode='markers',
                marker=dict(
                    size=10, 
                    color='red', 
                    symbol='diamond',
                    line=dict(width=2, color='white')
                ),
                name='Current Query',
                hoverinfo='text',
                text=f"ํ˜„์žฌ ์งˆ๋ฌธ: {query_text}"
            ))

    # ์Šคํƒ€์ผ ๊ฐœ์„ 
    fig.update_layout(
        margin=dict(l=0, r=0, b=0, t=40),
        scene=dict(
            xaxis=dict(showgrid=True, zeroline=False),
            yaxis=dict(showgrid=True, zeroline=False),
            zaxis=dict(showgrid=True, zeroline=False)
        )
    )
    
    # 6. ์ €์žฅ
    fig.write_html(OUTPUT_HTML_PATH)
    print(f"์‹œ๊ฐํ™” ํŒŒ์ผ ์ €์žฅ ์™„๋ฃŒ: {OUTPUT_HTML_PATH}")
    print("์›น ๋ธŒ๋ผ์šฐ์ €๋กœ ํ•ด๋‹น ํŒŒ์ผ์„ ์—ด์–ด๋ณด์„ธ์š”!")

if __name__ == "__main__":
    # ํ…Œ์ŠคํŠธ ์งˆ๋ฌธ์„ ๋„ฃ์–ด ๊ฒ€์ƒ‰ ์œ„์น˜๋ฅผ ํ™•์ธํ•ด๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
    test_query = "๊ณ ์–‘์ด ํ„ธ ๊ด€๋ฆฌํ•˜๋Š” ๋น— ์ถ”์ฒœํ•ด์ค˜"
    visualize_3d(test_query)