import os
import pytest
from app import create_app, db
from app.config import Config

class TestConfig(Config):
    """Test configuration that overrides the base configuration."""
    TESTING = True
    DEBUG = True
    SQLALCHEMY_DATABASE_URI = 'sqlite:///:memory:'
    WTF_CSRF_ENABLED = False
    LOG_LEVEL = 'DEBUG'
    
    # Override required settings for testing
    SECRET_KEY = 'testing-secret-key-not-used-in-production'
    MAIL_SUPPRESS_SEND = True
    RATELIMIT_ENABLED = False
    
    # Testing-specific settings
    RATELIMIT_DEFAULT = "1000 per day;100 per hour;20 per minute"
    CACHE_TYPE = "SimpleCache"

def get_test_config():
    """Get test configuration."""
    return TestConfig()

@pytest.fixture(scope='session')
def app():
    """Create and configure a Flask app for testing."""
    app = create_app('testing')
    app.config.update(get_test_config())
    
    # Create the database and load test data
    with app.app_context():
        db.create_all()
        yield app
        db.session.remove()
        db.drop_all()

@pytest.fixture(scope='session')
def client(app):
    """A test client for the app."""
    return app.test_client()

@pytest.fixture(scope='session')
def runner(app):
    """A test CLI runner for the app."""
    return app.test_cli_runner()

@pytest.fixture(scope='function')
def test_db(app):
    """Create a fresh database for each test."""
    with app.app_context():
        db.create_all()
        yield db
        db.session.remove()
        db.drop_all()