//! Tests for deployment creation with environment variables
//!
//! These tests verify the new environment variable functionality in deployments
//! and the enhanced deploy_application method.

use sal_kubernetes::KubernetesManager;
use std::collections::HashMap;

/// 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_deployment_create_with_env_vars() {
    if !should_run_k8s_tests() {
        println!("Skipping Kubernetes integration tests. Set KUBERNETES_TEST_ENABLED=1 to enable.");
        return;
    }

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

    // Clean up any existing test deployment
    let _ = km.deployment_delete("test-env-deployment").await;

    // Create deployment with environment variables
    let mut labels = HashMap::new();
    labels.insert("app".to_string(), "test-env-app".to_string());
    labels.insert("test".to_string(), "env-vars".to_string());

    let mut env_vars = HashMap::new();
    env_vars.insert("TEST_VAR_1".to_string(), "value1".to_string());
    env_vars.insert("TEST_VAR_2".to_string(), "value2".to_string());
    env_vars.insert("NODE_ENV".to_string(), "test".to_string());

    let result = km
        .deployment_create(
            "test-env-deployment",
            "nginx:latest",
            1,
            Some(labels),
            Some(env_vars),
        )
        .await;

    assert!(
        result.is_ok(),
        "Failed to create deployment with env vars: {:?}",
        result
    );

    // Verify the deployment was created
    let deployment = km.deployment_get("test-env-deployment").await;
    assert!(deployment.is_ok(), "Failed to get created deployment");

    let deployment = deployment.unwrap();

    // Verify environment variables are set in the container spec
    if let Some(spec) = &deployment.spec {
        if let Some(template) = &spec.template.spec {
            if let Some(container) = template.containers.first() {
                if let Some(env) = &container.env {
                    // Check that our environment variables are present
                    let env_map: HashMap<String, String> = env
                        .iter()
                        .filter_map(|e| e.value.as_ref().map(|v| (e.name.clone(), v.clone())))
                        .collect();

                    assert_eq!(env_map.get("TEST_VAR_1"), Some(&"value1".to_string()));
                    assert_eq!(env_map.get("TEST_VAR_2"), Some(&"value2".to_string()));
                    assert_eq!(env_map.get("NODE_ENV"), Some(&"test".to_string()));
                } else {
                    panic!("No environment variables found in container spec");
                }
            }
        }
    }

    // Clean up
    let _ = km.deployment_delete("test-env-deployment").await;
}

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

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

    // Clean up any existing test pod
    let _ = km.pod_delete("test-env-pod").await;

    // Create pod with environment variables
    let mut env_vars = HashMap::new();
    env_vars.insert("NODE_ENV".to_string(), "test".to_string());
    env_vars.insert(
        "DATABASE_URL".to_string(),
        "postgres://localhost:5432/test".to_string(),
    );
    env_vars.insert("API_KEY".to_string(), "test-api-key-12345".to_string());

    let mut labels = HashMap::new();
    labels.insert("app".to_string(), "test-env-pod-app".to_string());
    labels.insert("test".to_string(), "environment-variables".to_string());

    let result = km
        .pod_create("test-env-pod", "nginx:latest", Some(labels), Some(env_vars))
        .await;

    assert!(
        result.is_ok(),
        "Failed to create pod with env vars: {:?}",
        result
    );

    if let Ok(pod) = result {
        let pod_name = pod
            .metadata
            .name
            .as_ref()
            .unwrap_or(&"".to_string())
            .clone();
        assert_eq!(pod_name, "test-env-pod");
        println!("✅ Created pod with environment variables: {}", pod_name);

        // Verify the pod has the expected environment variables
        if let Some(spec) = &pod.spec {
            if let Some(container) = spec.containers.first() {
                if let Some(env) = &container.env {
                    let env_names: Vec<String> = env.iter().map(|e| e.name.clone()).collect();
                    assert!(env_names.contains(&"NODE_ENV".to_string()));
                    assert!(env_names.contains(&"DATABASE_URL".to_string()));
                    assert!(env_names.contains(&"API_KEY".to_string()));
                    println!("✅ Pod has expected environment variables");
                }
            }
        }
    }

    // Clean up
    let _ = km.pod_delete("test-env-pod").await;
}

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

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

    // Clean up any existing test deployment
    let _ = km.deployment_delete("test-no-env-deployment").await;

    // Create deployment without environment variables
    let mut labels = HashMap::new();
    labels.insert("app".to_string(), "test-no-env-app".to_string());

    let result = km
        .deployment_create(
            "test-no-env-deployment",
            "nginx:latest",
            1,
            Some(labels),
            None, // No environment variables
        )
        .await;

    assert!(
        result.is_ok(),
        "Failed to create deployment without env vars: {:?}",
        result
    );

    // Verify the deployment was created
    let deployment = km.deployment_get("test-no-env-deployment").await;
    assert!(deployment.is_ok(), "Failed to get created deployment");

    let deployment = deployment.unwrap();

    // Verify no environment variables are set
    if let Some(spec) = &deployment.spec {
        if let Some(template) = &spec.template.spec {
            if let Some(container) = template.containers.first() {
                // Environment variables should be None or empty
                assert!(
                    container.env.is_none() || container.env.as_ref().unwrap().is_empty(),
                    "Expected no environment variables, but found some"
                );
            }
        }
    }

    // Clean up
    let _ = km.deployment_delete("test-no-env-deployment").await;
}

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

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

    // Clean up any existing resources
    let _ = km.deployment_delete("test-app-env").await;
    let _ = km.service_delete("test-app-env").await;

    // Deploy application with both labels and environment variables
    let mut labels = HashMap::new();
    labels.insert("app".to_string(), "test-app-env".to_string());
    labels.insert("tier".to_string(), "backend".to_string());

    let mut env_vars = HashMap::new();
    env_vars.insert(
        "DATABASE_URL".to_string(),
        "postgres://localhost:5432/test".to_string(),
    );
    env_vars.insert("API_KEY".to_string(), "test-api-key".to_string());
    env_vars.insert("LOG_LEVEL".to_string(), "debug".to_string());

    let result = km
        .deploy_application(
            "test-app-env",
            "nginx:latest",
            2,
            80,
            Some(labels),
            Some(env_vars),
        )
        .await;

    assert!(
        result.is_ok(),
        "Failed to deploy application with env vars: {:?}",
        result
    );

    // Verify both deployment and service were created
    let deployment = km.deployment_get("test-app-env").await;
    assert!(deployment.is_ok(), "Deployment should be created");

    let service = km.service_get("test-app-env").await;
    assert!(service.is_ok(), "Service should be created");

    // Verify environment variables in deployment
    let deployment = deployment.unwrap();
    if let Some(spec) = &deployment.spec {
        if let Some(template) = &spec.template.spec {
            if let Some(container) = template.containers.first() {
                if let Some(env) = &container.env {
                    let env_map: HashMap<String, String> = env
                        .iter()
                        .filter_map(|e| e.value.as_ref().map(|v| (e.name.clone(), v.clone())))
                        .collect();

                    assert_eq!(
                        env_map.get("DATABASE_URL"),
                        Some(&"postgres://localhost:5432/test".to_string())
                    );
                    assert_eq!(env_map.get("API_KEY"), Some(&"test-api-key".to_string()));
                    assert_eq!(env_map.get("LOG_LEVEL"), Some(&"debug".to_string()));
                }
            }
        }
    }

    // Clean up
    let _ = km.deployment_delete("test-app-env").await;
    let _ = km.service_delete("test-app-env").await;
}

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

    let km = match KubernetesManager::new("default").await {
        Ok(km) => km,
        Err(_) => {
            println!("Skipping test - no Kubernetes cluster available");
            return;
        }
    };

    let app_name = "test-cleanup-app";

    // Clean up any existing resources first to ensure clean state
    let _ = km.deployment_delete(app_name).await;
    let _ = km.service_delete(app_name).await;

    // Wait a moment for cleanup to complete
    tokio::time::sleep(tokio::time::Duration::from_secs(2)).await;

    // First deployment
    let result = km
        .deploy_application(app_name, "nginx:latest", 1, 80, None, None)
        .await;

    if result.is_err() {
        println!("Skipping test - cluster connection unstable: {:?}", result);
        return;
    }

    // Verify resources exist (with graceful handling)
    let deployment_exists = km.deployment_get(app_name).await.is_ok();
    let service_exists = km.service_get(app_name).await.is_ok();

    if !deployment_exists || !service_exists {
        println!("Skipping test - resources not created properly");
        let _ = km.deployment_delete(app_name).await;
        let _ = km.service_delete(app_name).await;
        return;
    }

    // Second deployment with different configuration (should replace the first)
    let mut env_vars = HashMap::new();
    env_vars.insert("VERSION".to_string(), "2.0".to_string());

    let result = km
        .deploy_application(app_name, "nginx:alpine", 2, 80, None, Some(env_vars))
        .await;
    if result.is_err() {
        println!(
            "Skipping verification - second deployment failed: {:?}",
            result
        );
        let _ = km.deployment_delete(app_name).await;
        let _ = km.service_delete(app_name).await;
        return;
    }

    // Verify resources still exist (replaced, not duplicated)
    let deployment = km.deployment_get(app_name).await;
    if deployment.is_err() {
        println!("Skipping verification - deployment not found after replacement");
        let _ = km.deployment_delete(app_name).await;
        let _ = km.service_delete(app_name).await;
        return;
    }

    // Verify the new configuration
    let deployment = deployment.unwrap();
    if let Some(spec) = &deployment.spec {
        assert_eq!(spec.replicas, Some(2), "Replicas should be updated to 2");

        if let Some(template) = &spec.template.spec {
            if let Some(container) = template.containers.first() {
                assert_eq!(
                    container.image,
                    Some("nginx:alpine".to_string()),
                    "Image should be updated"
                );

                if let Some(env) = &container.env {
                    let has_version = env
                        .iter()
                        .any(|e| e.name == "VERSION" && e.value == Some("2.0".to_string()));
                    assert!(has_version, "Environment variable VERSION should be set");
                }
            }
        }
    }

    // Clean up
    let _ = km.deployment_delete(app_name).await;
    let _ = km.service_delete(app_name).await;
}