#!/usr/bin/env rhai

// Test 4: Error Handling and Edge Cases
// This test covers error scenarios and edge cases

// Helper function to generate timestamp for unique names
fn timestamp() {
    let now = 1640995200; // Base timestamp
    let random = (now % 1000000).to_string();
    random
}

print("=== Kubernetes Error Handling Test ===");
print("");

// Test connection validation
print("Test 1: Connection Validation");
print("-----------------------------");

try {
    // This should work if cluster is available
    let km = kubernetes_manager_new("default");
    print("✅ Successfully connected to Kubernetes cluster");
    
    // Test basic operation to verify connection
    let namespaces = km.namespaces_list();
    print("✅ Successfully retrieved " + namespaces.len() + " namespaces");
    
} catch (error) {
    print("❌ Kubernetes connection failed: " + error);
    print("");
    print("This test requires a running Kubernetes cluster.");
    print("Please ensure:");
    print("  - kubectl is configured");
    print("  - Cluster is accessible");
    print("  - Proper RBAC permissions are set");
    print("");
    throw "Kubernetes cluster not available";
}

print("");

// Test invalid namespace handling
print("Test 2: Invalid Namespace Handling");
print("----------------------------------");

try {
    // Try to create manager for invalid namespace name
    let invalid_names = [
        "INVALID-UPPERCASE",
        "invalid_underscore",
        "invalid.dot",
        "invalid space",
        "invalid@symbol",
        "123-starts-with-number",
        "ends-with-dash-",
        "-starts-with-dash"
    ];
    
    for invalid_name in invalid_names {
        try {
            print("Testing invalid namespace: '" + invalid_name + "'");
            let km = kubernetes_manager_new(invalid_name);
            
            // If we get here, the name was accepted (might be valid after all)
            print("  ⚠️  Name was accepted: " + invalid_name);
            
        } catch (name_error) {
            print("  ✅ Properly rejected invalid name: " + invalid_name);
        }
    }
    
} catch (error) {
    print("❌ Invalid namespace test failed: " + error);
    throw error;
}

print("");

// Test resource not found errors
print("Test 3: Resource Not Found Errors");
print("---------------------------------");

try {
    let km = kubernetes_manager_new("default");
    
    // Try to get a pod that doesn't exist
    let nonexistent_pod = "nonexistent-pod-" + timestamp();
    
    try {
        let pod = km.get_pod(nonexistent_pod);
        print("❌ Expected error for nonexistent pod, but got result: " + pod.name);
        throw "Should have failed to get nonexistent pod";
    } catch (not_found_error) {
        print("✅ Properly handled nonexistent pod error: " + not_found_error);
    }
    
    // Try to delete a pod that doesn't exist
    try {
        km.delete_pod(nonexistent_pod);
        print("✅ Delete nonexistent pod handled gracefully");
    } catch (delete_error) {
        print("✅ Delete nonexistent pod error handled: " + delete_error);
    }
    
} catch (error) {
    print("❌ Resource not found test failed: " + error);
    throw error;
}

print("");

// Test invalid resource names
print("Test 4: Invalid Resource Names");
print("------------------------------");

try {
    let km = kubernetes_manager_new("default");
    
    let invalid_resource_names = [
        "INVALID-UPPERCASE",
        "invalid_underscore", 
        "invalid.multiple.dots",
        "invalid space",
        "invalid@symbol",
        "toolong" + "a".repeat(100), // Too long name
        "", // Empty name
        "-starts-with-dash",
        "ends-with-dash-"
    ];
    
    for invalid_name in invalid_resource_names {
        try {
            print("Testing invalid resource name: '" + invalid_name + "'");
            
            let labels = #{ "test": "invalid-name" };
            km.create_pod(invalid_name, "nginx:alpine", labels);
            
            print("  ⚠️  Invalid name was accepted: " + invalid_name);
            
            // Clean up if it was created
            try {
                km.delete_pod(invalid_name);
            } catch (cleanup_error) {
                // Ignore cleanup errors
            }
            
        } catch (name_error) {
            print("  ✅ Properly rejected invalid resource name: " + invalid_name);
        }
    }
    
} catch (error) {
    print("❌ Invalid resource names test failed: " + error);
    throw error;
}

print("");

// Test invalid patterns
print("Test 5: Invalid PCRE Patterns");
print("------------------------------");

try {
    let km = kubernetes_manager_new("default");
    
    let invalid_patterns = [
        "[unclosed-bracket",
        "(?invalid-group",
        "*invalid-quantifier",
        "(?P<invalid-named-group>)",
        "\\invalid-escape"
    ];
    
    for invalid_pattern in invalid_patterns {
        try {
            print("Testing invalid pattern: '" + invalid_pattern + "'");
            km.delete(invalid_pattern);
            print("  ⚠️  Invalid pattern was accepted: " + invalid_pattern);
            
        } catch (pattern_error) {
            print("  ✅ Properly rejected invalid pattern: " + invalid_pattern);
        }
    }
    
} catch (error) {
    print("❌ Invalid patterns test failed: " + error);
    throw error;
}

print("");

// Test permission errors (if applicable)
print("Test 6: Permission Handling");
print("---------------------------");

try {
    let km = kubernetes_manager_new("default");
    
    // Try to create a namespace (might require cluster-admin)
    let test_ns = "sal-permission-test-" + timestamp();
    
    try {
        km.create_namespace(test_ns);
        print("✅ Namespace creation successful (sufficient permissions)");
        
        // Clean up
        try {
            km.delete_namespace(test_ns);
            print("✅ Namespace deletion successful");
        } catch (delete_error) {
            print("⚠️  Namespace deletion failed: " + delete_error);
        }
        
    } catch (permission_error) {
        print("⚠️  Namespace creation failed (may be permission issue): " + permission_error);
        print("   This is expected if running with limited RBAC permissions");
    }
    
} catch (error) {
    print("❌ Permission handling test failed: " + error);
    throw error;
}

print("");

// Test empty operations
print("Test 7: Empty Operations");
print("------------------------");

try {
    // Create a temporary namespace for testing
    let test_namespace = "sal-empty-test-" + timestamp();
    let setup_km = kubernetes_manager_new("default");
    
    try {
        setup_km.create_namespace(test_namespace);
        let km = kubernetes_manager_new(test_namespace);
        
        // Test operations on empty namespace
        let empty_pods = km.pods_list();
        print("Empty namespace pod count: " + empty_pods.len());
        
        if empty_pods.len() == 0 {
            print("✅ Empty namespace handled correctly");
        } else {
            print("⚠️  Expected empty namespace, found " + empty_pods.len() + " pods");
        }
        
        // Test pattern deletion on empty namespace
        km.delete(".*");
        print("✅ Pattern deletion on empty namespace handled");
        
        // Test resource counts on empty namespace
        let counts = km.resource_counts();
        print("✅ Resource counts on empty namespace: " + counts);
        
        // Cleanup
        setup_km.delete_namespace(test_namespace);
        
    } catch (empty_error) {
        print("❌ Empty operations test failed: " + empty_error);
        throw empty_error;
    }
    
} catch (error) {
    print("❌ Empty operations setup failed: " + error);
    throw error;
}

print("");

// Test concurrent operations (basic)
print("Test 8: Basic Concurrent Operations");
print("-----------------------------------");

try {
    let km = kubernetes_manager_new("default");
    
    // Test multiple rapid operations
    print("Testing rapid successive operations...");
    
    for i in range(0, 3) {
        let namespaces = km.namespaces_list();
        print("  Iteration " + i + ": " + namespaces.len() + " namespaces");
    }
    
    print("✅ Rapid successive operations handled");
    
} catch (error) {
    print("❌ Concurrent operations test failed: " + error);
    throw error;
}

print("");
print("=== Error Handling Test Complete ===");
print("✅ All error handling tests completed");
print("");
print("Summary:");
print("- Connection validation: ✅");
print("- Invalid namespace handling: ✅");
print("- Resource not found errors: ✅");
print("- Invalid resource names: ✅");
print("- Invalid PCRE patterns: ✅");
print("- Permission handling: ✅");
print("- Empty operations: ✅");
print("- Basic concurrent operations: ✅");