"""
Bid field extraction demo - demonstrates structured information extraction
from bidding announcements using RAG
"""

import sys
import os
import json
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from openai import OpenAI

from bdirag.document_processor import Document
from bdirag.embedding_models import SentenceTransformerEmbedding
from bdirag.vector_stores import FAISSStore
from bdirag.rag_methods import BidFieldExtractionRAG
from examples.sample_data import SAMPLE_BIDDING_DOCS


def main():
    print("=" * 60)
    print("BidiRAG - Bid Field Extraction Demo")
    print("=" * 60)

    # Configuration
    LLM_API_KEY = os.getenv("OPENAI_API_KEY", "your-api-key-here")
    LLM_BASE_URL = os.getenv("OPENAI_BASE_URL", "https://api.openai.com/v1")
    LLM_MODEL = os.getenv("LLM_MODEL", "gpt-4o")

    # Load embedding model
    print("\n[1/3] Loading embedding model...")
    embedding_model = SentenceTransformerEmbedding(
        model_name="BAAI/bge-large-zh-v1.5",
        device="cpu"
    )

    # Create vector store and index
    print("\n[2/3] Indexing bidding documents...")
    vector_store = FAISSStore(embedding_model=embedding_model)

    documents = [
        Document(page_content=doc["content"], metadata={"title": doc["title"], "source": doc["title"]})
        for doc in SAMPLE_BIDDING_DOCS
    ]

    llm_client = OpenAI(api_key=LLM_API_KEY, base_url=LLM_BASE_URL)

    rag = BidFieldExtractionRAG(
        embedding_model=embedding_model,
        vector_store=vector_store,
        llm_client=llm_client,
        llm_model=LLM_MODEL,
    )

    rag.index_documents(documents)
    print("  Indexed {0} documents.format(len(documents))")

    # Extract fields for each bidding document
    print("\n[3/3] Extracting fields from bidding documents...")

    for doc in SAMPLE_BIDDING_DOCS:
        print("\n{0}.format('=' * 60)")
        print("Document: {0}.format(doc['title'])")
        print("{0}.format('=' * 60)")

        query = "Extract all information from {0}.format(doc['title'])"

        try:
            result = rag.query(query, k=10)
            print(f"\nExtracted JSON:")
            print(result.answer)
            print("\nLatency: {0}s.format(result.latency_total:.3f)")
            print("Retrieved {0} document chunks.format(len(result.retrieved_docs))")

        except Exception as e:
            print("ERROR: {0}.format(e)")

    print("\n\nExtraction complete!")


if __name__ == "__main__":
    main()