use leptos::prelude::*;
use leptos_style::Style;
use crate::*;

#[cfg(test)]
mod performance_tests {
    use super::*;

    // ===== PERFORMANCE TESTS =====
    // These tests focus on performance, callbacks, disabled states, and complex content

    #[test]
    fn test_dropdown_menu_rendering_performance() {
        let start = std::time::Instant::now();
        
        for _ in 0..100 {
            let _view = view! {
                <DropdownMenu>
                    <DropdownMenuTrigger>
                        "Performance Test"
                    </DropdownMenuTrigger>
                    <DropdownMenuContent>
                        <DropdownMenuItem>
                            "Item 1"
                        </DropdownMenuItem>
                        <DropdownMenuItem>
                            "Item 2"
                        </DropdownMenuItem>
                        <DropdownMenuItem>
                            "Item 3"
                        </DropdownMenuItem>
                    </DropdownMenuContent>
                </DropdownMenu>
            };
        }
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 100, "Rendering should be performant");
    }

    #[test]
    fn test_dropdown_menu_callback_performance() {
        let callback_count = RwSignal::new(0);
        let callback = Callback::new(move |_| {
            callback_count.update(|count| *count += 1);
        });
        
        let start = std::time::Instant::now();
        
        for _ in 0..1000 {
            callback.run("test".to_string());
        }
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 10, "Callbacks should be performant");
        assert_eq!(callback_count.get(), 1000);
    }

    #[test]
    fn test_dropdown_menu_disabled_state_performance() {
        let disabled_state = RwSignal::new(false);
        
        let start = std::time::Instant::now();
        
        for _ in 0..1000 {
            disabled_state.set(!disabled_state.get());
        }
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 10, "Disabled state changes should be performant");
    }

    #[test]
    fn test_dropdown_menu_complex_content_performance() {
        let start = std::time::Instant::now();
        
        let _complex_view = view! {
            <DropdownMenu>
                <DropdownMenuTrigger>
                    "Complex Content Menu"
                </DropdownMenuTrigger>
                <DropdownMenuContent>
                    <DropdownMenuLabel>
                        "Complex Menu Label"
                    </DropdownMenuLabel>
                    <DropdownMenuSeparator/>
                    <DropdownMenuGroup>
                        <DropdownMenuItem>
                            "Complex Item 1"
                            <DropdownMenuShortcut>
                                "Ctrl+1"
                            </DropdownMenuShortcut>
                        </DropdownMenuItem>
                        <DropdownMenuItem>
                            "Complex Item 2"
                            <DropdownMenuShortcut>
                                "Ctrl+2"
                            </DropdownMenuShortcut>
                        </DropdownMenuItem>
                        <DropdownMenuItem>
                            "Complex Item 3"
                            <DropdownMenuShortcut>
                                "Ctrl+3"
                            </DropdownMenuShortcut>
                        </DropdownMenuItem>
                    </DropdownMenuGroup>
                    <DropdownMenuSeparator/>
                    <DropdownMenuGroup>
                        <DropdownMenuItem>
                            "Another Complex Item 1"
                        </DropdownMenuItem>
                        <DropdownMenuItem>
                            "Another Complex Item 2"
                        </DropdownMenuItem>
                    </DropdownMenuGroup>
                </DropdownMenuContent>
            </DropdownMenu>
        };
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 10, "Complex content should be performant");
    }

    #[test]
    fn test_dropdown_menu_memory_usage() {
        let _memory_view = view! {
            <DropdownMenu>
                <DropdownMenuTrigger>
                    "Memory Test"
                </DropdownMenuTrigger>
                <DropdownMenuContent>
                    <DropdownMenuItem>
                        "Memory Item 1"
                    </DropdownMenuItem>
                    <DropdownMenuItem>
                        "Memory Item 2"
                    </DropdownMenuItem>
                    <DropdownMenuItem>
                        "Memory Item 3"
                    </DropdownMenuItem>
                </DropdownMenuContent>
            </DropdownMenu>
        };
        
        // Test memory usage
        let size = std::mem::size_of::<usize>();
        assert!(size < 1024, "Memory usage should be reasonable");
    }

    #[test]
    fn test_dropdown_menu_large_dataset_performance() {
        let large_dataset = RwSignal::new((0..1000).map(|i| format!("Item {}", i)).collect::<Vec<_>>());
        
        let start = std::time::Instant::now();
        
        let _large_view = view! {
            <DropdownMenu>
                <DropdownMenuTrigger>
                    "Large Dataset Menu"
                </DropdownMenuTrigger>
                <DropdownMenuContent>
                    {move || large_dataset.get().into_iter().take(100).map(|item| {
                        view! {
                            <DropdownMenuItem>
                                {item}
                            </DropdownMenuItem>
                        }
                    }).collect::<Vec<_>>()}
                </DropdownMenuContent>
            </DropdownMenu>
        };
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 100, "Large dataset should be performant");
    }

    #[test]
    fn test_dropdown_menu_frequent_updates_performance() {
        let update_count = RwSignal::new(0);
        
        let start = std::time::Instant::now();
        
        for _ in 0..1000 {
            update_count.update(|count| *count += 1);
        }
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 10, "Frequent updates should be performant");
        assert_eq!(update_count.get(), 1000);
    }

    #[test]
    fn test_dropdown_menu_nested_performance() {
        let start = std::time::Instant::now();
        
        let _nested_view = view! {
            <DropdownMenu>
                <DropdownMenuTrigger>
                    "Nested Performance Menu"
                </DropdownMenuTrigger>
                <DropdownMenuContent>
                    <DropdownMenuItem>
                        "Level 1 Item"
                    </DropdownMenuItem>
                    <DropdownMenu>
                        <DropdownMenuTrigger>
                            "Level 2 Menu"
                        </DropdownMenuTrigger>
                        <DropdownMenuContent>
                            <DropdownMenuItem>
                                "Level 2 Item 1"
                            </DropdownMenuItem>
                            <DropdownMenuItem>
                                "Level 2 Item 2"
                            </DropdownMenuItem>
                            <DropdownMenu>
                                <DropdownMenuTrigger>
                                    "Level 3 Menu"
                                </DropdownMenuTrigger>
                                <DropdownMenuContent>
                                    <DropdownMenuItem>
                                        "Level 3 Item"
                                    </DropdownMenuItem>
                                </DropdownMenuContent>
                            </DropdownMenu>
                        </DropdownMenuContent>
                    </DropdownMenu>
                </DropdownMenuContent>
            </DropdownMenu>
        };
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 10, "Nested menus should be performant");
    }

    #[test]
    fn test_dropdown_menu_animation_performance() {
        let animation_state = RwSignal::new(false);
        
        let start = std::time::Instant::now();
        
        for _ in 0..100 {
            animation_state.set(!animation_state.get());
        }
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 10, "Animation state changes should be performant");
    }

    #[test]
    fn test_dropdown_menu_callback_memory_usage() {
        let callback_count = RwSignal::new(0);
        let callback = Callback::new(move |_| {
            callback_count.update(|count| *count += 1);
        });
        
        // Test callback memory usage
        let size = std::mem::size_of_val(&callback);
        assert!(size < 1024, "Callback should not cause excessive memory usage");
        
        // Test callback execution
        callback.run("test".to_string());
        assert_eq!(callback_count.get(), 1);
    }

    #[test]
    fn test_dropdown_menu_state_performance() {
        let state_count = RwSignal::new(0);
        
        let start = std::time::Instant::now();
        
        for _ in 0..1000 {
            state_count.update(|count| *count += 1);
        }
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 10, "State updates should be performant");
        assert_eq!(state_count.get(), 1000);
    }

    #[test]
    fn test_dropdown_menu_rendering_memory() {
        let _rendering_view = view! {
            <DropdownMenu>
                <DropdownMenuTrigger>
                    "Rendering Memory Test"
                </DropdownMenuTrigger>
                <DropdownMenuContent>
                    <DropdownMenuItem>
                        "Rendering Item 1"
                    </DropdownMenuItem>
                    <DropdownMenuItem>
                        "Rendering Item 2"
                    </DropdownMenuItem>
                    <DropdownMenuItem>
                        "Rendering Item 3"
                    </DropdownMenuItem>
                </DropdownMenuContent>
            </DropdownMenu>
        };
        
        // Test rendering memory usage
        let size = std::mem::size_of::<usize>();
        assert!(size < 1024, "Rendering should not cause excessive memory usage");
    }

    #[test]
    fn test_dropdown_menu_complex_callback_performance() {
        let complex_callback_count = RwSignal::new(0);
        let complex_callback = Callback::new(move |value: String| {
            complex_callback_count.update(|count| *count += 1);
            // Simulate complex callback logic
            let _processed_value = value.to_uppercase();
        });
        
        let start = std::time::Instant::now();
        
        for i in 0..1000 {
            complex_callback.run(format!("test-{}", i));
        }
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 50, "Complex callbacks should be performant");
        assert_eq!(complex_callback_count.get(), 1000);
    }

    #[test]
    fn test_dropdown_menu_optimization_performance() {
        let start = std::time::Instant::now();
        
        // Test optimized rendering
        let _optimized_view = view! {
            <DropdownMenu>
                <DropdownMenuTrigger>
                    "Optimized Menu"
                </DropdownMenuTrigger>
                <DropdownMenuContent>
                    <DropdownMenuItem>
                        "Optimized Item"
                    </DropdownMenuItem>
                </DropdownMenuContent>
            </DropdownMenu>
        };
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 5, "Optimized rendering should be very fast");
    }

    #[test]
    fn test_dropdown_menu_benchmark_performance() {
        let benchmark_count = RwSignal::new(0);
        
        let start = std::time::Instant::now();
        
        // Benchmark test
        for _ in 0..10000 {
            benchmark_count.update(|count| *count += 1);
        }
        
        let duration = start.elapsed();
        assert!(duration.as_millis() < 100, "Benchmark should be performant");
        assert_eq!(benchmark_count.get(), 10000);
    }
}
