use futures_util::{SinkExt, StreamExt};
use circles_launcher::{new_launcher, setup_multi_circle_server, shutdown_circles, Args, CircleConfig};
use secp256k1::Secp256k1;
use tokio_tungstenite::connect_async;
use url::Url;
use std::str::FromStr;

#[tokio::test]
async fn test_launcher_builder_pattern() {
    // Test the new builder pattern API
    let secp = Secp256k1::new();
    let (secret_key, public_key) = secp.generate_keypair(&mut secp256k1::rand::thread_rng());
    let public_key_str = public_key.to_string();

    // Use the builder pattern to create a launcher
    let launcher = new_launcher()
        .add_circle(&public_key_str)
        .port(8088)
        .redis_url("redis://127.0.0.1:6379")
        .worker_binary("../target/debug/worker") // Use debug for tests
        .enable_auth(false);

    // Note: We can't easily test the full launch in unit tests since it requires
    // actual binaries and Redis. This test verifies the builder pattern works.
    
    // Verify the builder created the launcher correctly
    // (This is more of a compilation test than a runtime test)
    assert!(true, "Builder pattern works correctly");
}

#[tokio::test]
async fn test_circle_config_parsing() {
    // Test parsing circle configurations from strings
    let public_key_only = "02a1b2c3d4e5f6789012345678901234567890123456789012345678901234567890";
    let config = CircleConfig::from_str(public_key_only).expect("Failed to parse public key only");
    assert_eq!(config.public_key, public_key_only);
    assert!(config.init_script.is_none());

    // Test with init script
    let with_script = "02a1b2c3d4e5f6789012345678901234567890123456789012345678901234567890:init.rhai";
    let config = CircleConfig::from_str(with_script).expect("Failed to parse with script");
    assert_eq!(config.public_key, public_key_only);
    assert_eq!(config.init_script, Some("init.rhai".to_string()));

    // Test invalid format
    let invalid = "invalid:too:many:colons";
    let result = CircleConfig::from_str(invalid);
    assert!(result.is_err(), "Should fail with invalid format");
}

#[tokio::test]
async fn test_args_structure() {
    // Test that Args structure works correctly with the new API
    let secp = Secp256k1::new();
    let (_, public_key) = secp.generate_keypair(&mut secp256k1::rand::thread_rng());
    let public_key_str = public_key.to_string();

    let args = Args {
        port: 8089,
        circles: vec![public_key_str.clone()],
        redis_url: "redis://127.0.0.1:6379".to_string(),
        enable_auth: false,
        worker_binary: Some("../target/debug/worker".to_string()),
        debug: true,
        verbose: 1,
    };

    // Verify args structure
    assert_eq!(args.port, 8089);
    assert_eq!(args.circles.len(), 1);
    assert_eq!(args.circles[0], public_key_str);
    assert!(!args.enable_auth);
    assert!(args.worker_binary.is_some());
}

#[tokio::test]
async fn test_setup_multi_circle_server_validation() {
    // Test validation in setup_multi_circle_server
    let args = Args {
        port: 8090,
        circles: vec![], // Empty circles should cause error
        redis_url: "redis://127.0.0.1:6379".to_string(),
        enable_auth: false,
        worker_binary: None, // Missing worker binary should cause error
        debug: true,
        verbose: 0,
    };

    // This should fail due to missing worker binary
    let result = setup_multi_circle_server(&args).await;
    assert!(result.is_err(), "Should fail with missing worker binary");
    
    if let Err(e) = result {
        let error_msg = e.to_string();
        assert!(
            error_msg.contains("Worker binary path is required"),
            "Error should mention missing worker binary, got: {}",
            error_msg
        );
    }
}

#[tokio::test]
async fn test_circle_config_validation() {
    // Test that invalid public keys are rejected
    let invalid_key = "not_a_valid_public_key";
    let result = CircleConfig::from_str(invalid_key);
    assert!(result.is_err(), "Should reject invalid public key");

    // Test valid public key format
    let valid_key = "02a1b2c3d4e5f6789012345678901234567890123456789012345678901234567890";
    let result = CircleConfig::from_str(valid_key);
    assert!(result.is_ok(), "Should accept valid public key");
}

#[tokio::test] 
async fn test_launcher_cleanup_functionality() {
    // Test that cleanup functionality exists and can be called
    // Note: This doesn't test actual cleanup since we don't have running services
    use circles_launcher::cleanup_launcher;
    
    // This should not panic and should handle the case where no services exist
    let result = cleanup_launcher().await;
    // It's OK if this fails due to no services - we're just testing the API exists
    let _ = result;
    
    assert!(true, "Cleanup function exists and can be called");
}

// Integration test that would require actual binaries and Redis
// Commented out since it requires external dependencies
/*
#[tokio::test]
#[ignore] // Use `cargo test -- --ignored` to run this test
async fn test_full_launcher_integration() {
    // This test requires:
    // 1. Redis server running on localhost:6379
    // 2. Worker binary built at ../target/debug/worker
    // 3. WebSocket server binary built at ../target/debug/circles_server
    
    let secp = Secp256k1::new();
    let (_, public_key) = secp.generate_keypair(&mut secp256k1::rand::thread_rng());
    let public_key_str = public_key.to_string();

    let args = Args {
        port: 8091,
        circles: vec![public_key_str.clone()],
        redis_url: "redis://127.0.0.1:6379".to_string(),
        enable_auth: false,
        worker_binary: Some("../target/debug/worker".to_string()),
        debug: true,
        verbose: 1,
    };

    // Setup the multi-circle server
    let result = setup_multi_circle_server(&args).await;
    assert!(result.is_ok(), "Failed to setup multi-circle server: {:?}", result.err());

    let (running_circles, outputs) = result.unwrap();
    
    // Verify outputs
    assert_eq!(outputs.len(), 1);
    assert_eq!(outputs[0].public_key, public_key_str);
    
    // Test WebSocket connection
    let ws_url = &outputs[0].ws_url;
    let connection_result = connect_async(ws_url).await;
    assert!(connection_result.is_ok(), "Failed to connect to WebSocket");

    // Cleanup
    shutdown_circles(running_circles).await;
}
*/