app.py

import streamlit as st
import openai
import os
import json
import re
import requests
from PIL import Image
from io import BytesIO
from urllib.parse import quote

# ------------------ Configuration ------------------
st.set_page_config(page_title="Forrestdale Technical Drawing Assistant", layout="wide")
st.markdown("""
    <h1 style='font-size: 2.5rem;'>🏪 Forrestdale Technical Drawing Assistant</h1>
    <p style='font-size: 1rem;'>Ask about plans, drawings or components</p>
""", unsafe_allow_html=True)

# ------------------ Environment ------------------
OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
ASSISTANT_ID = os.getenv("ASSISTANT_ID")

if not OPENAI_API_KEY or not ASSISTANT_ID:
    st.error("❌ Missing environment variables: OPENAI_API_KEY or ASSISTANT_ID.")
    st.stop()

client = openai.OpenAI(api_key=OPENAI_API_KEY)

# ------------------ Helper Functions ------------------
def extract_json_from_response(response_text):
    try:
        match = re.search(r"```json\s*([\s\S]+?)```", response_text.strip())
        if not match:
            raise ValueError("No valid JSON block found.")
        json_str = match.group(1).strip()
        return json.loads(json_str)
    except Exception as e:
        st.error("⚠️ Could not parse assistant response as JSON.")
        st.stop()

def display_card(item):
    st.markdown("""
        <div style="border: 1px solid #333; border-radius: 12px; padding: 16px; margin: 10px; background-color: #111;">
            <h3>📁 {} ({})</h3>
            <p><b>Discipline:</b> {}</p>
            <p><b>Summary:</b> {}</p>
            <div style="display: flex; flex-wrap: wrap; gap: 10px;">
    """.format(item["drawing_number"], item.get("drawing_type", ""), item["discipline"], item["summary"]), unsafe_allow_html=True)

    for img in item.get("images", []):
        try:
            response = requests.get(img)
            if response.status_code == 200:
                image = Image.open(BytesIO(response.content))
                st.image(image, caption=os.path.basename(img), width=200)
        except:
            st.warning(f"Image failed to load: {img}")

    st.markdown("</div></div>", unsafe_allow_html=True)

# ------------------ Input ------------------
query = st.text_input("Ask about plans, drawings or components", placeholder="Show me all architectural plans")

if query:
    with st.spinner("🔍 Querying assistant..."):
        try:
            if "thread_id" not in st.session_state:
                thread = client.beta.threads.create()
                st.session_state.thread_id = thread.id

            client.beta.threads.messages.create(
                thread_id=st.session_state.thread_id,
                role="user",
                content=query
            )

            run = client.beta.threads.runs.create(
                thread_id=st.session_state.thread_id,
                assistant_id=ASSISTANT_ID
            )

            while True:
                run_status = client.beta.threads.runs.retrieve(
                    thread_id=st.session_state.thread_id,
                    run_id=run.id
                )
                if run_status.status in ["completed", "failed", "cancelled"]:
                    break
                time.sleep(1)

            if run_status.status != "completed":
                st.error(f"❌ Assistant run failed: {run_status.status}")
            else:
                messages = client.beta.threads.messages.list(thread_id=st.session_state.thread_id)
                for message in reversed(messages.data):
                    if message.role == "assistant":
                        response_text = message.content[0].text.value
                        data = extract_json_from_response(response_text)
                        for item in data:
                            display_card(item)
                        break

        except Exception as e:
            st.error(f"❌ Error during assistant call: {e}")