#!/usr/bin/env python3
"""Simple startup script for debugging Flow2API on HuggingFace Spaces"""

import os
import sys
import time
import asyncio
from pathlib import Path

def debug_environment():
    """Print environment debug information"""
    print("=" * 60)
    print("🔍 FLOW2API DEBUG STARTUP")
    print("=" * 60)
    print(f"Python version: {sys.version}")
    print(f"Current working directory: {os.getcwd()}")
    print(f"User ID: {os.getuid()}")
    print(f"Group ID: {os.getgid()}")
    print(f"Environment variables:")
    for key, value in sorted(os.environ.items()):
        if key.startswith('FLOW2API') or key in ['HOST', 'PORT', 'HOME', 'PATH']:
            print(f"  {key}: {value}")
    print("=" * 60)

def check_file_permissions():
    """Check critical file permissions"""
    files_to_check = [
        '/app',
        '/app/logs.txt',
        '/app/data',
        '/app/config'
    ]

    print("📁 FILE PERMISSIONS CHECK:")
    for file_path in files_to_check:
        path = Path(file_path)
        if path.exists():
            stat_info = path.stat()
            print(f"  ✅ {file_path}: exists, mode={oct(stat_info.st_mode)}")
            if path.is_file():
                try:
                    # Test write permission
                    with open(path, 'a') as f:
                        f.write("")
                    print(f"  ✅ {file_path}: writable")
                except Exception as e:
                    print(f"  ❌ {file_path}: NOT writable - {e}")
        else:
            print(f"  ❌ {file_path}: does not exist")
    print("=" * 60)

async def test_basic_import():
    """Test if basic modules can be imported"""
    print("📦 IMPORT TEST:")
    try:
        import fastapi
        print(f"  ✅ FastAPI: {fastapi.__version__}")
    except Exception as e:
        print(f"  ❌ FastAPI import failed: {e}")

    try:
        import uvicorn
        print(f"  ✅ Uvicorn: available")
    except Exception as e:
        print(f"  ❌ Uvicorn import failed: {e}")

    try:
        import aiosqlite
        print(f"  ✅ aiosqlite: available")
    except Exception as e:
        print(f"  ❌ aiosqlite import failed: {e}")

    print("=" * 60)

async def test_database_connection():
    """Test database creation and connection"""
    print("💾 DATABASE TEST:")
    try:
        import aiosqlite

        # Test database directory creation
        data_dir = Path("/app/data")
        data_dir.mkdir(exist_ok=True)
        print(f"  ✅ Data directory: {data_dir}")

        # Test database connection
        db_path = "/app/data/test.db"
        async with aiosqlite.connect(db_path) as db:
            await db.execute("SELECT 1")
            print(f"  ✅ Database connection: successful")

        # Clean up test file
        os.remove(db_path)
        print(f"  ✅ Test database: cleaned up")

    except Exception as e:
        print(f"  ❌ Database test failed: {e}")
        import traceback
        traceback.print_exc()

    print("=" * 60)

def start_simple_server():
    """Start a simple test server"""
    print("🌐 SIMPLE SERVER TEST:")
    try:
        from fastapi import FastAPI
        import uvicorn

        app = FastAPI()

        @app.get("/")
        async def root():
            return {"message": "Flow2API is running", "status": "ok"}

        @app.get("/health")
        async def health():
            return {"status": "healthy"}

        print("  ✅ Simple FastAPI app created")
        print("  🚀 Starting simple server on port 7860...")

        # Start server
        uvicorn.run(
            app,
            host="0.0.0.0",
            port=7860,
            log_level="info"
        )

    except Exception as e:
        print(f"  ❌ Simple server failed: {e}")
        import traceback
        traceback.print_exc()

async def main():
    """Main debugging function"""
    debug_environment()
    check_file_permissions()
    await test_basic_import()
    await test_database_connection()

    print("🎯 STARTING FLOW2API:")
    try:
        # Import and start the main application
        from src.main import app
        print("  ✅ Main app imported successfully")

        # Start with uvicorn directly
        import uvicorn
        print("  🚀 Starting main application...")

        uvicorn.run(
            app,
            host="0.0.0.0",
            port=7860,
            log_level="info",
            access_log=True
        )

    except Exception as e:
        print(f"  ❌ Main app startup failed: {e}")
        import traceback
        traceback.print_exc()
        print("🔄 FALLING BACK TO SIMPLE SERVER...")
        start_simple_server()

if __name__ == "__main__":
    print("Starting Flow2API with debug mode...")
    asyncio.run(main())