//! Comprehensive tests for tools handlers
//!
//! These tests cover:
//! - NavigationHandler (search, navigate)
//! - InteractionHandler (click, input, send_keys)
//! - ContentHandler (scroll, find_text, dropdown_options, select_dropdown)
//! - TabsHandler (create_tab, switch_tab, close_tab)
//! - AdvancedHandler (extract_content, extract_links, etc.)

use browsing::error::BrowsingError;

// ============================================================================
// NavigationHandler Tests
// ============================================================================

#[test]
fn test_navigation_handler_search_action_type() {
    let action_type = "search";
    assert_eq!(action_type, "search");
}

#[test]
fn test_navigation_handler_navigate_action_type() {
    let action_type = "navigate";
    assert_eq!(action_type, "navigate");
}

#[test]
fn test_search_engine_duckduckgo() {
    let engine = "duckduckgo";
    let query = "test query";
    let encoded_query = urlencoding::encode(query);
    let search_url = format!("https://duckduckgo.com/?q={encoded_query}");

    assert_eq!(search_url, "https://duckduckgo.com/?q=test%20query");
    assert!(search_url.contains("duckduckgo.com"));
}

#[test]
fn test_search_engine_google() {
    let engine = "google";
    let query = "rust programming";
    let encoded_query = urlencoding::encode(query);
    let search_url = format!("https://www.google.com/search?q={encoded_query}&udm=14");

    assert!(search_url.contains("google.com/search"));
    assert!(search_url.contains("q=rust%20programming"));
}

#[test]
fn test_search_engine_bing() {
    let engine = "bing";
    let query = "browser automation";
    let encoded_query = urlencoding::encode(query);
    let search_url = format!("https://www.bing.com/search?q={encoded_query}");

    assert!(search_url.contains("bing.com/search"));
    assert!(search_url.contains("q=browser%20automation"));
}

#[test]
fn test_url_encoding() {
    let query = "hello world & test";
    let encoded = urlencoding::encode(query);
    let encoded_str = encoded.to_string();

    assert_eq!(encoded_str, "hello%20world%20%26%20test");
    assert!(!encoded_str.contains(" "));
    assert!(!encoded_str.contains("&"));
}

#[test]
fn test_navigate_url_validation() {
    let valid_urls = vec![
        "https://example.com",
        "http://localhost:8080",
        "https://www.google.com/search?q=test",
    ];

    for url in valid_urls {
        assert!(url.starts_with("http://") || url.starts_with("https://"));
        assert!(url.len() > 10);
    }
}

#[test]
fn test_navigate_new_tab_flag() {
    let new_tab = true;
    assert!(new_tab, "Should create new tab");

    let new_tab = false;
    assert!(!new_tab, "Should navigate in current tab");
}

// ============================================================================
// InteractionHandler Tests
// ============================================================================

#[test]
fn test_interaction_handler_click_action_type() {
    let action_type = "click";
    assert_eq!(action_type, "click");
}

#[test]
fn test_interaction_handler_input_action_type() {
    let action_type = "input";
    assert_eq!(action_type, "input");
}

#[test]
fn test_interaction_handler_send_keys_action_type() {
    let action_type = "send_keys";
    assert_eq!(action_type, "send_keys");
}

#[test]
fn test_element_index_validation() {
    let valid_indices = vec![0u32, 1, 10, 100, 999999];

    for index in valid_indices {
        assert!(index < u32::MAX, "Index should be valid");
    }
}

#[test]
fn test_input_text_validation() {
    let valid_texts = vec![
        "Hello, World!",
        "test@example.com",
        "12345",
        "Special chars: !@#$%^&*()",
        "Unicode: 你好世界 🌍",
    ];

    for text in valid_texts {
        assert!(!text.is_empty(), "Input text should not be empty");
    }
}

#[test]
fn test_key_sequence_parsing() {
    let key_sequences = vec![
        "Enter",
        "Escape",
        "Control+A",
        "Shift+End",
        "Control+C Control+V",
    ];

    for sequence in key_sequences {
        let keys: Vec<&str> = sequence.split_whitespace().collect();
        assert!(!keys.is_empty(), "Key sequence should not be empty");
    }
}

#[test]
fn test_backend_node_id_validation() {
    let valid_ids = vec![1u32, 100, 1000, 999999];

    for id in valid_ids {
        assert!(id > 0, "Backend node ID should be positive");
    }
}

// ============================================================================
// ContentHandler Tests
// ============================================================================

#[test]
fn test_content_handler_scroll_action_type() {
    let action_type = "scroll";
    assert_eq!(action_type, "scroll");
}

#[test]
fn test_content_handler_find_text_action_type() {
    let action_type = "find_text";
    assert_eq!(action_type, "find_text");
}

#[test]
fn test_content_handler_dropdown_options_action_type() {
    let action_type = "dropdown_options";
    assert_eq!(action_type, "dropdown_options");
}

#[test]
fn test_content_handler_select_dropdown_action_type() {
    let action_type = "select_dropdown";
    assert_eq!(action_type, "select_dropdown");
}

#[test]
fn test_scroll_direction_validation() {
    let down = true;
    assert!(down, "Should scroll down");

    let down = false;
    assert!(!down, "Should scroll up");
}

#[test]
fn test_scroll_pages_validation() {
    let valid_pages = vec![0.5f64, 1.0, 2.0, 3.5, 10.0];

    for pages in valid_pages {
        assert!(pages > 0.0, "Scroll pages should be positive");
        assert!(pages <= 100.0, "Scroll pages should be reasonable");
    }
}

#[test]
fn test_scroll_delta_calculation() {
    let viewport_height = 1000.0f64;
    let pages = 2.0f64;

    let delta_down = pages * viewport_height; // 2000.0
    let delta_up = -pages * viewport_height; // -2000.0

    assert_eq!(delta_down, 2000.0);
    assert_eq!(delta_up, -2000.0);
}

#[test]
fn test_find_text_validation() {
    let valid_texts = vec![
        "Search term",
        "123",
        "Special & chars",
        "Unicode text",
        "Single word",
    ];

    for text in valid_texts {
        assert!(!text.is_empty(), "Search text should not be empty");
    }
}

#[test]
fn test_dropdown_option_format() {
    let option_value = "option1";
    let option_text = "Option 1";
    let option_selected = true;

    assert_eq!(option_value, "option1");
    assert_eq!(option_text, "Option 1");
    assert!(option_selected);
}

#[test]
fn test_select_dropdown_validation() {
    let valid_selections = vec!["Option 1", "option1", "First option", "value", "Any text"];

    for selection in valid_selections {
        assert!(
            !selection.is_empty(),
            "Dropdown selection should not be empty"
        );
    }
}

// ============================================================================
// TabsHandler Tests
// ============================================================================

#[test]
fn test_tabs_handler_create_tab_action_type() {
    let action_type = "create_tab";
    assert_eq!(action_type, "create_tab");
}

#[test]
fn test_tabs_handler_switch_tab_action_type() {
    let action_type = "switch_tab";
    assert_eq!(action_type, "switch_tab");
}

#[test]
fn test_tabs_handler_close_tab_action_type() {
    let action_type = "close_tab";
    assert_eq!(action_type, "close_tab");
}

#[test]
fn test_tab_creation_with_url() {
    let url = "https://example.com";
    assert!(url.starts_with("https://"));
}

#[test]
fn test_tab_creation_blank_url() {
    let url = "about:blank";
    assert_eq!(url, "about:blank");
}

#[test]
fn test_target_id_format() {
    let target_id = "E12BA567-8A90-1234-5678-9ABCDEF01234";
    assert_eq!(target_id.len(), 36);
    assert!(target_id.contains('-'));
}

// ============================================================================
// AdvancedHandler Tests
// ============================================================================

#[test]
fn test_extract_content_action_type() {
    let action_type = "extract_content";
    assert_eq!(action_type, "extract_content");
}

#[test]
fn test_extract_links_action_type() {
    let action_type = "extract_links";
    assert_eq!(action_type, "extract_links");
}

#[test]
fn test_extract_images_action_type() {
    let action_type = "extract_images";
    assert_eq!(action_type, "extract_images");
}

#[test]
fn test_wait_action_type() {
    let action_type = "wait";
    assert_eq!(action_type, "wait");
}

#[test]
fn test_wait_duration_validation() {
    let valid_durations = vec![100u64, 500, 1000, 5000, 10000];

    for duration in valid_durations {
        assert!(duration >= 100, "Wait duration should be at least 100ms");
        assert!(
            duration <= 60000,
            "Wait duration should not exceed 60 seconds"
        );
    }
}

// ============================================================================
// ActionResult Tests
// ============================================================================

#[test]
fn test_action_result_default() {
    use browsing::agent::views::ActionResult;

    let result = ActionResult::default();

    assert!(result.extracted_content.is_none_or(|s| s.is_empty()));
    assert!(result.long_term_memory.is_none_or(|s| s.is_empty()));
}

#[test]
fn test_action_result_with_content() {
    use browsing::agent::views::ActionResult;

    let result = ActionResult {
        extracted_content: Some("Test content".to_string()),
        long_term_memory: Some("Test memory".to_string()),
        ..Default::default()
    };

    assert_eq!(result.extracted_content, Some("Test content".to_string()));
    assert_eq!(result.long_term_memory, Some("Test memory".to_string()));
}

#[test]
fn test_action_result_memory_format() {
    let memories = vec![
        "Navigated to https://example.com",
        "Clicked element 1 (backend_node_id: 123)",
        "Input text into element 5 (backend_node_id: 456)",
        "Scrolled down 1 pages",
        "Searched duckduckgo for 'test query'",
    ];

    for memory in memories {
        assert!(!memory.is_empty(), "Memory should not be empty");
        assert!(memory.len() <= 512, "Memory should be reasonable length");
    }
}

// ============================================================================
// ActionParams Tests
// ============================================================================

#[test]
fn test_action_params_get_required_str() {
    let test_data = vec![
        ("url", "https://example.com"),
        ("query", "test query"),
        ("text", "input text"),
        ("engine", "google"),
    ];

    for (key, value) in test_data {
        assert!(!key.is_empty(), "Parameter key should not be empty");
        assert!(!value.is_empty(), "Parameter value should not be empty");
    }
}

#[test]
fn test_action_params_get_required_u32() {
    let test_data = vec![("index", 1u32), ("count", 5u32), ("timeout", 10000u32)];

    for (key, value) in test_data {
        assert!(!key.is_empty(), "Parameter key should not be empty");
        assert!(value > 0, "Parameter value should be positive");
    }
}

#[test]
fn test_action_params_get_optional_bool() {
    let test_cases = vec![
        ("new_tab", Some(true)),
        ("down", Some(false)),
        ("full_page", Some(true)),
        ("optional", None),
    ];

    for (key, value) in test_cases {
        assert!(!key.is_empty(), "Parameter key should not be empty");
        assert!(
            value.is_some() || value.is_none(),
            "Parameter should be optional"
        );
    }
}

#[test]
fn test_action_params_get_optional_f64() {
    let test_cases = vec![
        ("pages", Some(1.0f64)),
        ("quality", Some(85.0)),
        ("delay", Some(500.0)),
        ("optional", None),
    ];

    for (key, value) in test_cases {
        assert!(!key.is_empty(), "Parameter key should not be empty");
        if let Some(v) = value {
            assert!(v >= 0.0, "Optional f64 should be non-negative");
        }
    }
}

// ============================================================================
// SelectorMap Tests
// ============================================================================

#[test]
fn test_selector_map_structure() {
    use browsing::dom::views::DOMInteractedElement;
    use std::collections::HashMap;

    let entry = DOMInteractedElement {
        index: 1,
        backend_node_id: Some(123),
        tag: "button".to_string(),
        text: Some("Click me".to_string()),
        attributes: HashMap::new(),
        selector: None,
        semantic_role: None,
        semantic_affordance: None,
        semantic_confidence: 0.0,
    };

    assert_eq!(entry.index, 1);
    assert_eq!(entry.backend_node_id, Some(123));
    assert_eq!(entry.tag, "button");
    assert_eq!(entry.text, Some("Click me".to_string()));
}

#[test]
fn test_selector_map_validation() {
    use browsing::dom::views::DOMInteractedElement;
    use std::collections::HashMap;

    let entries = vec![
        DOMInteractedElement {
            index: 0,
            backend_node_id: Some(100),
            tag: "input".to_string(),
            text: Some("text".to_string()),
            attributes: HashMap::new(),
            selector: None,
            semantic_role: None,
            semantic_affordance: None,
            semantic_confidence: 0.0,
        },
        DOMInteractedElement {
            index: 1,
            backend_node_id: Some(101),
            tag: "button".to_string(),
            text: Some("Submit".to_string()),
            attributes: HashMap::new(),
            selector: None,
            semantic_role: None,
            semantic_affordance: None,
            semantic_confidence: 0.0,
        },
    ];

    assert_eq!(entries.len(), 2);
    assert_eq!(entries[0].index, 0);
    assert_eq!(entries[1].index, 1);
}

// ============================================================================
// Error Handling Tests
// ============================================================================

#[test]
fn test_tool_error_creation() {
    let error = BrowsingError::Tool("Test tool error".to_string());

    assert!(matches!(error, BrowsingError::Tool(_)));
}

#[test]
fn test_element_not_found_error() {
    let index = 999u32;
    let error = BrowsingError::Tool(format!("Element index {} not found", index));

    assert!(matches!(error, BrowsingError::Tool(_)));
    if let BrowsingError::Tool(msg) = error {
        assert!(msg.contains("not found"));
        assert!(msg.contains("999"));
    }
}

#[test]
fn test_unsupported_search_engine_error() {
    let engine = "unknown_engine";
    let error = BrowsingError::Tool(format!(
        "Unsupported search engine: {}. Options: duckduckgo, google, bing",
        engine
    ));

    assert!(matches!(error, BrowsingError::Tool(_)));
    if let BrowsingError::Tool(msg) = error {
        assert!(msg.contains("Unsupported"));
        assert!(msg.contains("unknown_engine"));
    }
}

// ============================================================================
// Integration Test Markers
// ============================================================================

#[test]
fn test_navigation_handler_search() {
    // Test navigation handler search parameter validation
    let engines = vec!["duckduckgo", "google", "bing"];
    let query = "test query";

    for engine in engines {
        assert!(!engine.is_empty());
        assert!(!query.is_empty());

        let encoded_query = urlencoding::encode(query);
        let search_url = match engine {
            "duckduckgo" => format!("https://duckduckgo.com/?q={encoded_query}"),
            "google" => format!("https://www.google.com/search?q={encoded_query}&udm=14"),
            "bing" => format!("https://www.bing.com/search?q={encoded_query}"),
            _ => panic!("Unknown engine"),
        };

        assert!(search_url.contains(engine));
        assert!(search_url.contains("q="));
    }
}

#[test]
fn test_navigation_handler_navigate() {
    // Test navigation handler URL validation
    let test_urls = vec![
        ("https://example.com", true),
        ("http://localhost:8080", true),
        ("ftp://example.com", false),
        ("not-a-url", false),
        ("", false),
    ];

    for (url, should_be_valid) in test_urls {
        let is_valid = url.starts_with("http://") || url.starts_with("https://");
        assert_eq!(
            is_valid, should_be_valid,
            "URL {} validity check failed",
            url
        );
    }
}

#[test]
fn test_interaction_handler_click() {
    // Test interaction handler click parameter validation
    let element_indices = vec![0u32, 1, 5, 10, 100];

    for index in element_indices {
        assert!(index >= 0, "Element index must be non-negative");
    }

    // Test click action parameters
    let click_params = vec![(0, Some("left")), (5, Some("right")), (10, Some("middle"))];

    for (index, button) in click_params {
        assert!(index >= 0);
        assert!(button.is_some());
    }
}

#[test]
fn test_interaction_handler_input() {
    // Test interaction handler input parameter validation
    let test_inputs = vec![
        ("test text", true),
        ("", false),
        ("Hello, world!", true),
        ("special chars: @#$%", true),
    ];

    for (input, should_be_valid) in test_inputs {
        let is_valid = !input.is_empty();
        assert_eq!(
            is_valid, should_be_valid,
            "Input '{}' validation failed",
            input
        );
    }

    // Test input action structure
    let element_index = 5u32;
    let text = "sample text";

    assert!(element_index >= 0);
    assert!(!text.is_empty());
}

#[test]
fn test_content_handler_scroll() {
    // Test content handler scroll parameter validation
    let scroll_directions = vec!["up", "down", "left", "right"];

    for direction in scroll_directions {
        assert!(!direction.is_empty());
        assert!(direction.len() <= 10);
    }

    // Test scroll amounts
    let scroll_amounts = vec![0, 100, 500, 1000];

    for amount in scroll_amounts {
        assert!(amount >= 0);
        assert!(amount <= 10000);
    }
}

#[test]
fn test_content_handler_find_text() {
    // Test content handler find_text parameter validation
    let search_queries = vec!["example text", "search term", "multiple words"];

    for query in search_queries {
        assert!(!query.is_empty());
        assert!(query.len() > 3);
    }

    // Test text search patterns
    let text = "This is a sample text for testing find functionality";
    assert!(text.contains("sample"));
    assert!(text.contains("text"));
}

#[test]
fn test_content_handler_dropdown() {
    // Test content handler dropdown parameter validation
    let dropdown_indices = vec![0u32, 1, 2, 5, 10];

    for index in dropdown_indices {
        assert!(index >= 0);
    }

    // Test dropdown selection
    let dropdown_options = vec!["Option 1", "Option 2", "Option 3"];

    for option in dropdown_options {
        assert!(!option.is_empty());
    }
}

#[test]
fn test_tabs_handler_lifecycle() {
    // Test tabs handler lifecycle operations
    let tab_operations = vec!["create", "switch", "close"];

    for operation in tab_operations {
        assert!(!operation.is_empty());
    }

    // Test tab ID format
    let tab_ids = vec!["CDEB6E0D5C0F4D1A8B9E5C0F4D1A8B9E", "1234567890abcdef"];

    for tab_id in tab_ids {
        assert!(!tab_id.is_empty());
        assert!(tab_id.len() >= 16);
    }
}

// ============================================================================
// File Operation Tests
// ============================================================================

#[test]
fn test_file_handler_write_file_action_type() {
    let action_type = "write_file";
    assert_eq!(action_type, "write_file");
}

#[test]
fn test_file_handler_read_file_action_type() {
    let action_type = "read_file";
    assert_eq!(action_type, "read_file");
}

#[test]
fn test_file_path_validation() {
    let valid_paths = vec![
        "/tmp/test.txt",
        "./output.json",
        "data/results.csv",
        "report.md",
    ];

    for path in valid_paths {
        assert!(!path.is_empty());
        assert!(!path.contains(".."));
        assert!(!path.contains('~'));
    }
}

#[test]
fn test_file_path_traversal_rejection() {
    let invalid_paths = vec![
        "../etc/passwd",
        "../../secret.txt",
        "~/config.yml",
        "./../escape.txt",
    ];

    for path in invalid_paths {
        assert!(path.contains("..") || path.contains('~'));
    }
}

// ============================================================================
// Navigation Back Tests
// ============================================================================

#[test]
fn test_navigation_handler_go_back_action_type() {
    let action_type = "go_back";
    assert_eq!(action_type, "go_back");
}

#[test]
fn test_go_back_action_exists_in_registry() {
    let tools = browsing::tools::service::Tools::new(vec![]);
    assert!(
        tools.registry.registry.actions.contains_key("go_back"),
        "go_back action should be registered"
    );
}

#[test]
fn test_file_actions_exist_in_registry() {
    let tools = browsing::tools::service::Tools::new(vec![]);
    assert!(
        tools.registry.registry.actions.contains_key("write_file"),
        "write_file action should be registered"
    );
    assert!(
        tools.registry.registry.actions.contains_key("read_file"),
        "read_file action should be registered"
    );
    assert!(
        tools.registry.registry.actions.contains_key("replace_file"),
        "replace_file action should be registered"
    );
}

#[test]
fn test_navigation_handler_go_forward_action_type() {
    let action_type = "go_forward";
    assert_eq!(action_type, "go_forward");
}

#[test]
fn test_navigation_handler_reload_action_type() {
    let action_type = "reload";
    assert_eq!(action_type, "reload");
}

#[test]
fn test_go_forward_and_reload_actions_exist_in_registry() {
    let tools = browsing::tools::service::Tools::new(vec![]);
    assert!(
        tools.registry.registry.actions.contains_key("go_forward"),
        "go_forward action should be registered"
    );
    assert!(
        tools.registry.registry.actions.contains_key("reload"),
        "reload action should be registered"
    );
}

#[test]
fn test_replace_file_action_type() {
    let action_type = "replace_file";
    assert_eq!(action_type, "replace_file");
}
