# scripts/setup_dev.py
# !/usr/bin/env python3
"""Development environment setup script"""

import os
import sys
import subprocess
from pathlib import Path


def run_command(command, description):
    """Run a shell command and handle errors"""
    print(f"Running: {description}")
    try:
        subprocess.run(command, shell=True, check=True)
        print(f"✅ {description} completed successfully")
    except subprocess.CalledProcessError as e:
        print(f"❌ {description} failed: {e}")
        return False
    return True


def setup_alembic():
    """Set up Alembic for database migrations"""
    alembic_dir = Path("alembic")

    # Check if alembic directory exists and has necessary files
    if not alembic_dir.exists() or not (alembic_dir / "script.py.mako").exists():
        print("📝 Initializing Alembic...")
        if alembic_dir.exists():
            # Remove incomplete alembic directory
            import shutil
            shutil.rmtree(alembic_dir)

        if not run_command("alembic init alembic", "Initializing Alembic"):
            return False

    # Update alembic/env.py with proper configuration
    env_py_content = '''from logging.config import fileConfig
from sqlalchemy import engine_from_config, pool
from alembic import context
import os
import sys

# Add your project directory to the Python path
sys.path.append(os.path.dirname(os.path.dirname(__file__)))

from models.database_models import Base
from config.settings import settings

# Alembic Config object
config = context.config

# Override sqlalchemy.url with our settings
config.set_main_option("sqlalchemy.url", settings.database_url)

if config.config_file_name is not None:
    fileConfig(config.config_file_name)

target_metadata = Base.metadata

def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode."""
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

    with context.begin_transaction():
        context.run_migrations()

def run_migrations_online() -> None:
    """Run migrations in 'online' mode."""
    connectable = engine_from_config(
        config.get_section(config.config_ini_section, {}),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata
        )

        with context.begin_transaction():
            context.run_migrations()

if context.is_offline_mode():
    run_migrations_offline()
else:
    run_migrations_online()
'''

    env_py_path = alembic_dir / "env.py"
    env_py_path.write_text(env_py_content)
    print("✅ Updated alembic/env.py with project configuration")

    return True


def setup_environment():
    """Set up the development environment"""
    print("🚀 Setting up ecommerce API development environment...")

    # Check Python version
    if sys.version_info < (3, 8):
        print("❌ Python 3.8+ is required")
        return False

    # Create .env file if it doesn't exist
    env_file = Path(".env")
    env_example = Path(".env.example")

    if not env_file.exists() and env_example.exists():
        print("📝 Creating .env file from .env.example...")
        env_file.write_text(env_example.read_text())
    elif not env_file.exists():
        print("📝 Creating default .env file...")
        default_env = """DATABASE_URL=sqlite:///./ecommerce.db
JWT_SECRET_KEY=development-secret-key-change-in-production
JWT_EXPIRE_HOURS=24
API_HOST=0.0.0.0
API_PORT=8000
DEBUG=True
RATE_LIMIT_ENABLED=True
DEFAULT_RATE_LIMIT=100
DEFAULT_WINDOW_SECONDS=3600
LOG_LEVEL=INFO
"""
        env_file.write_text(default_env)

    # Install dependencies
    if not run_command("pip install -r requirements.txt", "Installing dependencies"):
        return False

    # Set up Alembic
    if not setup_alembic():
        print("⚠️  Alembic setup failed. You'll need to set up database migrations manually.")
        return False

    # Create initial migration
    if not run_command("alembic revision --autogenerate -m \"Initial migration\"", "Creating initial migration"):
        print("⚠️  Initial migration creation failed. Check your database models.")

    # Apply migrations
    if not run_command("alembic upgrade head", "Setting up database"):
        print("⚠️  Database setup failed. Make sure your DATABASE_URL is correct in .env")

    # Run tests
    if not run_command("pytest", "Running tests"):
        print("⚠️  Some tests failed. Check the output above.")

    print("\n🎉 Development environment setup complete!")
    print("To start the development server, run:")
    print("  uvicorn main:app --reload")
    print("\nDatabase commands:")
    print("  alembic revision --autogenerate -m \"Description\"  # Create migration")
    print("  alembic upgrade head                                # Apply migrations")
    print("  alembic current                                     # Check status")

    return True


if __name__ == "__main__":
    setup_environment()