//! Edge case and error scenario tests for Kubernetes module
//!
//! These tests verify proper error handling and edge case behavior.

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_with_invalid_image() {
    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,
    };

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

    // Try to create deployment with invalid image name
    let result = km
        .deployment_create(
            "test-invalid-image",
            "invalid/image/name/that/does/not/exist:latest",
            1,
            None,
            None,
        )
        .await;

    // The deployment creation should succeed (Kubernetes validates images at runtime)
    assert!(result.is_ok(), "Deployment creation should succeed even with invalid image");

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

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

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

    // Try to create deployment with empty name
    let result = km
        .deployment_create("", "nginx:latest", 1, None, None)
        .await;

    // Should fail due to invalid name
    assert!(result.is_err(), "Deployment with empty name should fail");
}

#[tokio::test]
async fn test_deployment_with_invalid_replicas() {
    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-invalid-replicas").await;

    // Try to create deployment with negative replicas
    let result = km
        .deployment_create("test-invalid-replicas", "nginx:latest", -1, None, None)
        .await;

    // Should fail due to invalid replica count
    assert!(result.is_err(), "Deployment with negative replicas should fail");
}

#[tokio::test]
async fn test_deployment_with_large_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-large-env").await;

    // Create deployment with many environment variables
    let mut env_vars = HashMap::new();
    for i in 0..50 {
        env_vars.insert(format!("TEST_VAR_{}", i), format!("value_{}", i));
    }

    let result = km
        .deployment_create("test-large-env", "nginx:latest", 1, None, Some(env_vars))
        .await;

    assert!(result.is_ok(), "Deployment with many env vars should succeed: {:?}", result);

    // Verify the deployment was created
    let deployment = km.deployment_get("test-large-env").await;
    assert!(deployment.is_ok(), "Should be able to get deployment with many env vars");

    // Verify environment variables count
    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 {
                    assert_eq!(env.len(), 50, "Should have 50 environment variables");
                }
            }
        }
    }

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

#[tokio::test]
async fn test_deployment_with_special_characters_in_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-special-env").await;

    // Create deployment with special characters in environment variables
    let mut env_vars = HashMap::new();
    env_vars.insert("DATABASE_URL".to_string(), "postgres://user:pass@host:5432/db?ssl=true".to_string());
    env_vars.insert("JSON_CONFIG".to_string(), r#"{"key": "value", "number": 123}"#.to_string());
    env_vars.insert("MULTILINE_VAR".to_string(), "line1\nline2\nline3".to_string());
    env_vars.insert("SPECIAL_CHARS".to_string(), "!@#$%^&*()_+-=[]{}|;:,.<>?".to_string());

    let result = km
        .deployment_create("test-special-env", "nginx:latest", 1, None, Some(env_vars))
        .await;

    assert!(result.is_ok(), "Deployment with special chars in env vars should succeed: {:?}", result);

    // Verify the deployment was created and env vars are preserved
    let deployment = km.deployment_get("test-special-env").await;
    assert!(deployment.is_ok(), "Should be able to get 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://user:pass@host:5432/db?ssl=true".to_string())
                    );
                    assert_eq!(
                        env_map.get("JSON_CONFIG"),
                        Some(&r#"{"key": "value", "number": 123}"#.to_string())
                    );
                    assert_eq!(
                        env_map.get("SPECIAL_CHARS"),
                        Some(&"!@#$%^&*()_+-=[]{}|;:,.<>?".to_string())
                    );
                }
            }
        }
    }

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

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

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

    // Try to deploy application with invalid port (negative)
    let result = km
        .deploy_application("test-invalid-port", "nginx:latest", 1, -80, None, None)
        .await;

    // Should fail due to invalid port
    assert!(result.is_err(), "Deploy application with negative port should fail");

    // Try with port 0
    let result = km
        .deploy_application("test-zero-port", "nginx:latest", 1, 0, None, None)
        .await;

    // Should fail due to invalid port
    assert!(result.is_err(), "Deploy application with port 0 should fail");
}

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

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

    // Try to get a deployment that doesn't exist
    let result = km.deployment_get("nonexistent-deployment-12345").await;

    // Should fail with appropriate error
    assert!(result.is_err(), "Getting nonexistent deployment should fail");
}

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

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

    // Try to delete a deployment that doesn't exist
    let result = km.deployment_delete("nonexistent-deployment-12345").await;

    // Should fail gracefully
    assert!(result.is_err(), "Deleting nonexistent deployment should fail");
}

#[tokio::test]
async fn test_deployment_with_zero_replicas() {
    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-zero-replicas").await;

    // Create deployment with zero replicas (should be valid)
    let result = km
        .deployment_create("test-zero-replicas", "nginx:latest", 0, None, None)
        .await;

    assert!(result.is_ok(), "Deployment with zero replicas should succeed: {:?}", result);

    // Verify the deployment was created with 0 replicas
    let deployment = km.deployment_get("test-zero-replicas").await;
    assert!(deployment.is_ok(), "Should be able to get deployment with zero replicas");

    let deployment = deployment.unwrap();
    if let Some(spec) = &deployment.spec {
        assert_eq!(spec.replicas, Some(0), "Should have 0 replicas");
    }

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