//! Integration tests for SAL Kubernetes
//!
//! These tests require a running Kubernetes cluster and appropriate credentials.
//! Set KUBERNETES_TEST_ENABLED=1 to run these tests.

use sal_kubernetes::KubernetesManager;

/// Check if Kubernetes integration tests should run
fn should_run_k8s_tests() -> bool {
    std::env::var("KUBERNETES_TEST_ENABLED").unwrap_or_default() == "1"
}

#[tokio::test]
async fn test_kubernetes_manager_creation() {
    if !should_run_k8s_tests() {
        println!("Skipping Kubernetes integration tests. Set KUBERNETES_TEST_ENABLED=1 to enable.");
        return;
    }

    let result = KubernetesManager::new("default").await;
    match result {
        Ok(_) => println!("Successfully created KubernetesManager"),
        Err(e) => println!("Failed to create KubernetesManager: {}", e),
    }
}

#[tokio::test]
async fn test_namespace_operations() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return, // Skip if can't connect
    };

    // Test namespace creation (should be idempotent)
    let test_namespace = "sal-test-namespace";
    let result = km.namespace_create(test_namespace).await;
    assert!(result.is_ok(), "Failed to create namespace: {:?}", result);

    // Test creating the same namespace again (should not error)
    let result = km.namespace_create(test_namespace).await;
    assert!(
        result.is_ok(),
        "Failed to create namespace idempotently: {:?}",
        result
    );
}

#[tokio::test]
async fn test_pods_list() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return, // Skip if can't connect
    };

    let result = km.pods_list().await;
    match result {
        Ok(pods) => {
            println!("Found {} pods in default namespace", pods.len());

            // Verify pod structure
            for pod in pods.iter().take(3) {
                // Check first 3 pods
                assert!(pod.metadata.name.is_some());
                assert!(pod.metadata.namespace.is_some());
                println!(
                    "Pod: {} in namespace: {}",
                    pod.metadata.name.as_ref().unwrap(),
                    pod.metadata.namespace.as_ref().unwrap()
                );
            }
        }
        Err(e) => {
            println!("Failed to list pods: {}", e);
            // Don't fail the test if we can't list pods due to permissions
        }
    }
}

#[tokio::test]
async fn test_services_list() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return,
    };

    let result = km.services_list().await;
    match result {
        Ok(services) => {
            println!("Found {} services in default namespace", services.len());

            // Verify service structure
            for service in services.iter().take(3) {
                assert!(service.metadata.name.is_some());
                println!("Service: {}", service.metadata.name.as_ref().unwrap());
            }
        }
        Err(e) => {
            println!("Failed to list services: {}", e);
        }
    }
}

#[tokio::test]
async fn test_deployments_list() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return,
    };

    let result = km.deployments_list().await;
    match result {
        Ok(deployments) => {
            println!(
                "Found {} deployments in default namespace",
                deployments.len()
            );

            // Verify deployment structure
            for deployment in deployments.iter().take(3) {
                assert!(deployment.metadata.name.is_some());
                println!("Deployment: {}", deployment.metadata.name.as_ref().unwrap());
            }
        }
        Err(e) => {
            println!("Failed to list deployments: {}", e);
        }
    }
}

#[tokio::test]
async fn test_resource_counts() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return,
    };

    let result = km.resource_counts().await;
    match result {
        Ok(counts) => {
            println!("Resource counts: {:?}", counts);

            // Verify expected resource types are present
            assert!(counts.contains_key("pods"));
            assert!(counts.contains_key("services"));
            assert!(counts.contains_key("deployments"));
            assert!(counts.contains_key("configmaps"));
            assert!(counts.contains_key("secrets"));

            // Verify counts are reasonable (counts are usize, so always non-negative)
            for (resource_type, count) in counts {
                // Verify we got a count for each resource type
                println!("Resource type '{}' has {} items", resource_type, count);
                // Counts should be reasonable (not impossibly large)
                assert!(
                    count < 10000,
                    "Count for {} seems unreasonably high: {}",
                    resource_type,
                    count
                );
            }
        }
        Err(e) => {
            println!("Failed to get resource counts: {}", e);
        }
    }
}

#[tokio::test]
async fn test_namespaces_list() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return,
    };

    let result = km.namespaces_list().await;
    match result {
        Ok(namespaces) => {
            println!("Found {} namespaces", namespaces.len());

            // Should have at least default namespace
            let namespace_names: Vec<String> = namespaces
                .iter()
                .filter_map(|ns| ns.metadata.name.as_ref())
                .cloned()
                .collect();

            println!("Namespaces: {:?}", namespace_names);
            assert!(namespace_names.contains(&"default".to_string()));
        }
        Err(e) => {
            println!("Failed to list namespaces: {}", e);
        }
    }
}

#[tokio::test]
async fn test_pattern_matching_dry_run() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return,
    };

    // Test pattern matching without actually deleting anything
    // We'll just verify that the regex patterns work correctly
    let test_patterns = vec![
        "test-.*",        // Should match anything starting with "test-"
        ".*-temp$",       // Should match anything ending with "-temp"
        "nonexistent-.*", // Should match nothing (hopefully)
    ];

    for pattern in test_patterns {
        println!("Testing pattern: {}", pattern);

        // Get all pods first
        if let Ok(pods) = km.pods_list().await {
            let regex = regex::Regex::new(pattern).unwrap();
            let matching_pods: Vec<_> = pods
                .iter()
                .filter_map(|pod| pod.metadata.name.as_ref())
                .filter(|name| regex.is_match(name))
                .collect();

            println!(
                "Pattern '{}' would match {} pods: {:?}",
                pattern,
                matching_pods.len(),
                matching_pods
            );
        }
    }
}

#[tokio::test]
async fn test_namespace_exists_functionality() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return,
    };

    // Test that default namespace exists
    let result = km.namespace_exists("default").await;
    match result {
        Ok(exists) => {
            assert!(exists, "Default namespace should exist");
            println!("Default namespace exists: {}", exists);
        }
        Err(e) => {
            println!("Failed to check if default namespace exists: {}", e);
        }
    }

    // Test that a non-existent namespace doesn't exist
    let result = km.namespace_exists("definitely-does-not-exist-12345").await;
    match result {
        Ok(exists) => {
            assert!(!exists, "Non-existent namespace should not exist");
            println!("Non-existent namespace exists: {}", exists);
        }
        Err(e) => {
            println!("Failed to check if non-existent namespace exists: {}", e);
        }
    }
}

#[tokio::test]
async fn test_manager_namespace_property() {
    if !should_run_k8s_tests() {
        return;
    }

    let test_namespace = "test-namespace";
    let km = match KubernetesManager::new(test_namespace).await {
        Ok(km) => km,
        Err(_) => return,
    };

    // Verify the manager knows its namespace
    assert_eq!(km.namespace(), test_namespace);
    println!("Manager namespace: {}", km.namespace());
}

#[tokio::test]
async fn test_error_handling() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return,
    };

    // Test getting a non-existent pod
    let result = km.pod_get("definitely-does-not-exist-12345").await;
    assert!(result.is_err(), "Getting non-existent pod should fail");

    if let Err(e) = result {
        println!("Expected error for non-existent pod: {}", e);
        // Verify it's the right kind of error
        match e {
            sal_kubernetes::KubernetesError::ApiError(_) => {
                println!("Correctly got API error for non-existent resource");
            }
            _ => {
                println!("Got unexpected error type: {:?}", e);
            }
        }
    }
}

#[tokio::test]
async fn test_configmaps_and_secrets() {
    if !should_run_k8s_tests() {
        return;
    }

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => return,
    };

    // Test configmaps listing
    let result = km.configmaps_list().await;
    match result {
        Ok(configmaps) => {
            println!("Found {} configmaps in default namespace", configmaps.len());
            for cm in configmaps.iter().take(3) {
                if let Some(name) = &cm.metadata.name {
                    println!("ConfigMap: {}", name);
                }
            }
        }
        Err(e) => {
            println!("Failed to list configmaps: {}", e);
        }
    }

    // Test secrets listing
    let result = km.secrets_list().await;
    match result {
        Ok(secrets) => {
            println!("Found {} secrets in default namespace", secrets.len());
            for secret in secrets.iter().take(3) {
                if let Some(name) = &secret.metadata.name {
                    println!("Secret: {}", name);
                }
            }
        }
        Err(e) => {
            println!("Failed to list secrets: {}", e);
        }
    }
}