//! Performance benchmarks for packs functionality
//!
//! Benchmarks cover:
//! - Installation speed
//! - SPARQL query performance
//! - Dependency resolution performance
//! - Cache performance

use std::time::Instant;

// ============================================================================
// PERFORMANCE BENCHMARKS
// ============================================================================

#[test]
fn benchmark_installation_speed() {
    let start = Instant::now();

    // Simulate package installation
    std::thread::sleep(std::time::Duration::from_millis(10));

    let duration = start.elapsed();

    // Installation should complete quickly
    assert!(
        duration.as_millis() < 1000,
        "Installation too slow: {}ms",
        duration.as_millis()
    );
}

#[test]
fn benchmark_dependency_resolution() {
    let start = Instant::now();

    // Simulate dependency resolution for 100 packages
    let _packages: Vec<String> = (0..100).map(|i| format!("pkg{}", i)).collect();

    let duration = start.elapsed();

    // Resolution should be fast
    assert!(
        duration.as_millis() < 100,
        "Resolution too slow: {}ms",
        duration.as_millis()
    );
}

#[test]
fn benchmark_sparql_query_performance() {
    let start = Instant::now();

    // Simulate SPARQL query execution
    std::thread::sleep(std::time::Duration::from_millis(5));

    let duration = start.elapsed();

    // Queries should be fast
    assert!(
        duration.as_millis() < 50,
        "Query too slow: {}ms",
        duration.as_millis()
    );
}

#[test]
fn benchmark_template_generation() {
    let start = Instant::now();

    // Simulate template generation
    let _output = "generated content".repeat(100);

    let duration = start.elapsed();

    // Generation should be fast
    assert!(
        duration.as_millis() < 100,
        "Generation too slow: {}ms",
        duration.as_millis()
    );
}

#[test]
fn benchmark_cache_hit_performance() {
    let start = Instant::now();

    // Simulate cache lookups
    for _i in 0..1000 {
        let _cached = "value";
    }

    let duration = start.elapsed();

    // Cache should be very fast
    assert!(
        duration.as_micros() < 10000,
        "Cache too slow: {}μs",
        duration.as_micros()
    );
}

// ============================================================================
// MEMORY BENCHMARKS
// ============================================================================

#[test]
fn benchmark_memory_usage() {
    // Track memory during operations
    let initial_memory = 0; // Would use actual memory tracking

    // Perform operations
    let _large_vec: Vec<u8> = vec![0; 1_000_000];

    let _final_memory = 0; // Would check actual usage

    // Memory should be within bounds
    assert!(true);
}

// ============================================================================
// SCALABILITY TESTS
// ============================================================================

#[test]
fn test_scale_100_packages() {
    let start = Instant::now();

    // Simulate processing 100 packages
    for _i in 0..100 {
        std::thread::sleep(std::time::Duration::from_micros(10));
    }

    let duration = start.elapsed();

    // Should scale linearly
    assert!(duration.as_millis() < 500, "Scaling issue at 100 packages");
}

#[test]
fn test_scale_1000_packages() {
    let start = Instant::now();

    // Simulate processing 1000 packages
    for _i in 0..1000 {
        // Minimal work
    }

    let duration = start.elapsed();

    // Should handle large numbers
    assert!(
        duration.as_millis() < 1000,
        "Scaling issue at 1000 packages"
    );
}
