"""
Hugging Face Spaces Entry Point for ResearchOS
This serves as the main entry point when using Gradio SDK fallback,
or as a health-check wrapper when using Docker SDK.
"""

import gradio as gr
import os
import subprocess
import threading
import time

# Start all backend services in background thread
def start_services():
    print("[HF Spaces] Starting ResearchOS services...")

    # Set SQLite fallback for HF Spaces
    os.environ.setdefault('DATABASE_URL', 'sqlite:///app/researchos.db')
    os.environ.setdefault('JWT_SECRET', os.getenv('JWT_SECRET', 'hf-spaces-secret'))

    services = [
        ("auth", "python services/auth-service/src/main.py"),
        ("project", "python services/project-service/src/main.py"),
        ("manuscript", "python services/manuscript-service/src/main.py"),
        ("analysis", "python services/analysis-service/src/main.py"),
        ("agent", "python services/agent-service/src/main.py"),
        ("verification", "python services/verification-service/src/main.py"),
    ]

    for name, cmd in services:
        try:
            subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            print(f"[HF Spaces] Started {name} service")
            time.sleep(1)
        except Exception as e:
            print(f"[HF Spaces] Failed to start {name}: {e}")

    # Start API Gateway
    time.sleep(2)
    try:
        subprocess.Popen("python services/api-gateway/src/main.py", shell=True)
        print("[HF Spaces] Started API Gateway")
    except Exception as e:
        print(f"[HF Spaces] Failed to start API Gateway: {e}")

    # Start Next.js frontend
    time.sleep(2)
    try:
        subprocess.Popen("cd apps/web && PORT=7860 node server.js", shell=True)
        print("[HF Spaces] Started Web Frontend on port 7860")
    except Exception as e:
        print(f"[HF Spaces] Failed to start frontend: {e}")

# Start services in background
threading.Thread(target=start_services, daemon=True).start()

# Gradio interface as fallback/wrapper
def health_check():
    import urllib.request
    try:
        req = urllib.request.Request('http://localhost:8000/health', method='GET')
        with urllib.request.urlopen(req, timeout=5) as resp:
            return resp.read().decode()
    except Exception as e:
        return f"Services starting... ({str(e)})"

with gr.Blocks(title="ResearchOS") as demo:
    gr.Markdown("# ResearchOS - AI Research Platform")
    gr.Markdown("The full Next.js application is running in the background.")

    with gr.Row():
        with gr.Column():
            gr.Markdown("### System Status")
            status_btn = gr.Button("Check Health")
            status_output = gr.Textbox(label="Status", value="Starting...")
            status_btn.click(health_check, outputs=status_output)

        with gr.Column():
            gr.Markdown("### Quick Links")
            gr.Markdown("- [Open Full App](/)")
            gr.Markdown("- API Gateway: `http://localhost:8000`")

    gr.Markdown("---")
    gr.Markdown("If the full app doesn't load, wait 30 seconds for services to boot, then refresh.")

# Launch Gradio (this is required for HF Spaces Gradio SDK)
# But if using Docker SDK, this file is ignored and start.sh is used instead
demo.launch(server_name="0.0.0.0", server_port=7860, share=False)