use std::env;
use sqlx::{Pool, Postgres};
use nxtgauge_backend_rust::users::{AppState, router};
use std::sync::Arc;
use redis::AsyncCommands;

// Test database configuration
pub async fn setup_test_db() -> Pool<Postgres> {
    // Use environment variable for test database URL
    let database_url = env::var("TEST_DATABASE_URL")
        .unwrap_or_else(|_| "postgres://postgres:password@localhost:5432/nxtgauge_test".to_string());
    
    // In a real implementation, we would:
    // 1. Create the test database if it doesn't exist
    // 2. Run migrations against it
    // 3. Return the connection pool
    
    // For now, we'll return a placeholder that will fail gracefully
    // indicating that test database setup needs to be implemented
    match Pool::connect(&database_url).await {
        Ok(pool) => pool,
        Err(e) => {
            eprintln!("Warning: Could not connect to test database: {}", e);
            eprintln!("Tests will run in mock mode. Set up TEST_DATABASE_URL for real database tests.");
            // Return a dummy pool - tests that actually need DB will fail appropriately
            // This allows tests to compile and run basic assertions
            panic!("Test database not configured. Please set TEST_DATABASE_URL environment variable.");
        }
    }
}

// Helper to create test Redis connection
pub async fn setup_test_redis() -> redis::aio::ConnectionManager {
    let redis_url = env::var("TEST_REDIS_URL")
        .unwrap_or_else(|_| "redis://127.0.0.1:6379".to_string());
    
    redis::Client::open(redis_url as &str)
        .expect("Invalid Redis URL")
        .get_connection_manager()
        .await
        .expect("Failed to connect to Redis")
}

// Helper to create test app state
pub async fn create_test_app_state() -> AppState {
    let pool = setup_test_db().await;
    let redis = setup_test_redis().await;
    
    // In a real implementation, we would create a test mailer
    // let mailer = Arc::new(TestMailer::new());
    
    AppState {
        pool,
        mail: Arc::new(crate::email::Mailer::new()), // This will fail in test mode without SMTP config
        redis: Arc::new(redis),
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    
    #[test]
    fn test_helper_imports() {
        // Just verify the module compiles
        assert!(true);
    }
}