sql-cli 1.67.2

//! Adapter to make `VimSearchManager` work with `StateDispatcher`

use crate::app_state_container::AppStateContainer;
use crate::buffer::{AppMode, Buffer, BufferAPI};
use crate::data::data_view::DataView;
use crate::state::{StateEvent, StateSubscriber};
use crate::ui::search::vim_search_manager::VimSearchManager;
use crate::ui::state::shadow_state::SearchType;
use crate::ui::viewport_manager::ViewportManager;
use crossterm::event::KeyCode;
use tracing::{debug, info};

/// Adapter that connects `VimSearchManager` to the state dispatcher
pub struct VimSearchAdapter {
    manager: VimSearchManager,
    is_active: bool,
}

impl Default for VimSearchAdapter {
    fn default() -> Self {
        Self::new()
    }
}

impl VimSearchAdapter {
    #[must_use]
    pub fn new() -> Self {
        Self {
            manager: VimSearchManager::new(),
            is_active: false,
        }
    }

    /// Create with a specific manager (for testing or advanced use)
    #[must_use]
    pub fn with_manager(manager: VimSearchManager) -> Self {
        Self {
            manager,
            is_active: false,
        }
    }

    /// Check if vim search should handle a key based on `AppStateContainer` state
    pub fn should_handle_key(&self, state: &AppStateContainer) -> bool {
        // Use AppStateContainer's vim search check
        let should_handle = state.vim_search_should_handle_key();

        debug!(
            "VimSearchAdapter: should_handle_key? mode={:?}, pattern='{}', active={}, result={}",
            state.get_mode(),
            state.get_search_pattern(),
            self.is_active,
            should_handle
        );

        should_handle || self.is_active
    }

    /// Check if vim search should handle a key based on Buffer state (legacy - for compatibility)
    pub fn should_handle_key_buffer(&self, buffer: &dyn BufferAPI) -> bool {
        // Check Buffer's state, not internal state
        let in_search_mode = buffer.get_mode() == AppMode::Search;
        let has_pattern = !buffer.get_search_pattern().is_empty();

        debug!(
            "VimSearchAdapter: should_handle_key_buffer? mode={:?}, pattern='{}', active={}",
            buffer.get_mode(),
            buffer.get_search_pattern(),
            self.is_active
        );

        // Only handle keys if we're in search mode OR have an active pattern
        in_search_mode || (self.is_active && has_pattern)
    }

    /// Clear the search manager when search ends
    pub fn clear(&mut self) {
        info!("VimSearchAdapter: Clearing vim search");
        self.manager.clear();
        self.is_active = false;
    }

    /// Get the inner manager
    #[must_use]
    pub fn manager(&self) -> &VimSearchManager {
        &self.manager
    }

    /// Get mutable reference to inner manager
    pub fn manager_mut(&mut self) -> &mut VimSearchManager {
        &mut self.manager
    }

    /// Handle a key press through `AppStateContainer` (simplified interface)
    /// Returns true if key was handled, false to let it fall through
    pub fn handle_key(&mut self, key: KeyCode, state: &mut AppStateContainer) -> bool {
        let mode = state.get_mode();

        // Special handling for Escape key
        if key == KeyCode::Esc {
            match mode {
                AppMode::Results if self.is_active || self.is_navigating() => {
                    // In Results mode with active search: Signal that Escape was pressed
                    // But DON'T handle it here - return false to let StateCoordinator handle it
                    info!("VimSearchAdapter: Escape detected in Results mode with active search - signaling for StateCoordinator");
                    // Return false so it falls through to handle_results_input
                    // where StateCoordinator will properly clear everything
                    return false;
                }
                AppMode::Search => {
                    // In Search mode: exit to Results
                    info!("VimSearchAdapter: Exiting search mode to Results");
                    state.exit_vim_search();
                    self.clear();
                    return true;
                }
                _ => {
                    // Not our concern
                    return false;
                }
            }
        }

        // For other keys, only handle if we should
        if !self.should_handle_key(state) {
            debug!("VimSearchAdapter: Not handling key - search not active");
            return false;
        }

        // For n/N keys, let them go through the normal action system
        // The TUI will map them to NextSearchMatch/PreviousSearchMatch actions
        // which will then call vim_search_next()/vim_search_previous()
        match key {
            KeyCode::Char('n' | 'N') => {
                info!(
                    "VimSearchAdapter: Navigation key '{}' - letting TUI handle via action system",
                    if key == KeyCode::Char('n') { "n" } else { "N" }
                );
                // Don't handle - let TUI map to NextSearchMatch/PreviousSearchMatch actions
                false
            }
            KeyCode::Enter => {
                info!("VimSearchAdapter: Confirming search - will need dataview and viewport from TUI");
                // Signal that this key was handled - the TUI needs to provide dataview and viewport
                true
            }
            _ => false,
        }
    }

    /// Handle a key press - delegates to `VimSearchManager` if appropriate (legacy)
    pub fn handle_key_legacy(
        &mut self,
        key: KeyCode,
        dataview: &DataView,
        viewport: &mut ViewportManager,
        buffer: &dyn BufferAPI,
    ) -> bool {
        // First check if we should handle keys at all
        if !self.should_handle_key_buffer(buffer) {
            debug!("VimSearchAdapter: Not handling key - search not active");
            return false;
        }

        // Delegate to VimSearchManager for actual search operations
        match key {
            KeyCode::Char('n') => {
                info!("VimSearchAdapter: Delegating 'n' (next match) to VimSearchManager");
                self.manager.next_match(viewport);
                true
            }
            KeyCode::Char('N') => {
                info!("VimSearchAdapter: Delegating 'N' (previous match) to VimSearchManager");
                self.manager.previous_match(viewport);
                true
            }
            KeyCode::Enter => {
                info!("VimSearchAdapter: Delegating Enter (confirm search) to VimSearchManager");
                self.manager.confirm_search(dataview, viewport);
                true
            }
            KeyCode::Esc => {
                info!("VimSearchAdapter: Search cancelled");
                self.clear();
                false // Let TUI handle mode change
            }
            _ => {
                // For typing characters in search mode
                if self.manager.is_typing() {
                    if let KeyCode::Char(c) = key {
                        // Update pattern - this would need to be connected to Buffer's search_state
                        debug!("VimSearchAdapter: Character '{}' typed in search", c);
                        // Note: Pattern updates should go through Buffer
                        true
                    } else {
                        false
                    }
                } else {
                    false
                }
            }
        }
    }

    /// Start a new search
    pub fn start_search(&mut self) {
        info!("VimSearchAdapter: Starting new search");
        self.is_active = true;
        self.manager.start_search();
    }

    /// Update search pattern and find matches
    pub fn update_pattern(
        &mut self,
        pattern: String,
        dataview: &DataView,
        viewport: &mut ViewportManager,
    ) {
        debug!("VimSearchAdapter: Updating pattern to '{}'", pattern);
        self.manager.update_pattern(pattern, dataview, viewport);
    }

    /// Confirm the current search
    pub fn confirm_search(&mut self, dataview: &DataView, viewport: &mut ViewportManager) -> bool {
        info!("VimSearchAdapter: Confirming search");
        self.manager.confirm_search(dataview, viewport)
    }

    /// Check if the adapter is active (has vim search running)
    #[must_use]
    pub fn is_active(&self) -> bool {
        self.is_active || self.manager.is_active()
    }

    /// Check if we're currently navigating through search results
    #[must_use]
    pub fn is_navigating(&self) -> bool {
        self.manager.is_navigating()
    }

    /// Get the current search pattern
    #[must_use]
    pub fn get_pattern(&self) -> Option<String> {
        self.manager.get_pattern()
    }

    /// Get match information (current, total)
    #[must_use]
    pub fn get_match_info(&self) -> Option<(usize, usize)> {
        self.manager.get_match_info()
    }

    /// Cancel the current search
    pub fn cancel_search(&mut self) {
        info!("VimSearchAdapter: Cancelling search");
        self.manager.cancel_search();
        self.is_active = false;
    }

    /// Exit navigation mode
    pub fn exit_navigation(&mut self) {
        info!("VimSearchAdapter: Exiting navigation");
        self.manager.exit_navigation();
    }

    /// Mark search as complete (after Apply/Enter)
    /// Keeps matches for n/N navigation and stays active
    pub fn mark_search_complete(&mut self) {
        info!("VimSearchAdapter: Marking search as complete, keeping matches for navigation");
        // Keep is_active = true so n/N continue to work
        // The manager stays active with matches
        // Only clear() or cancel_search() will deactivate
    }

    /// Navigate to next match
    pub fn next_match(
        &mut self,
        viewport: &mut ViewportManager,
    ) -> Option<crate::ui::search::vim_search_manager::SearchMatch> {
        self.manager.next_match(viewport)
    }

    /// Navigate to previous match  
    pub fn previous_match(
        &mut self,
        viewport: &mut ViewportManager,
    ) -> Option<crate::ui::search::vim_search_manager::SearchMatch> {
        self.manager.previous_match(viewport)
    }

    /// Set search state from external source (for compatibility)
    pub fn set_search_state_from_external(
        &mut self,
        pattern: String,
        matches: Vec<(usize, usize)>,
        dataview: &DataView,
    ) {
        self.manager
            .set_search_state_from_external(pattern, matches, dataview);
        self.is_active = true; // Activate when search state is set externally
    }

    /// Resume the last search
    pub fn resume_last_search(
        &mut self,
        dataview: &DataView,
        viewport: &mut ViewportManager,
    ) -> bool {
        let result = self.manager.resume_last_search(dataview, viewport);
        if result {
            self.is_active = true;
        }
        result
    }

    /// Reset to the first match
    pub fn reset_to_first_match(
        &mut self,
        viewport: &mut ViewportManager,
    ) -> Option<crate::ui::search::vim_search_manager::SearchMatch> {
        self.manager.reset_to_first_match(viewport)
    }
}

impl StateSubscriber for VimSearchAdapter {
    fn on_state_event(&mut self, event: &StateEvent, buffer: &Buffer) {
        match event {
            StateEvent::SearchStarted { search_type } => {
                if matches!(search_type, SearchType::Vim) {
                    info!("VimSearchAdapter: Activating for vim search");
                    self.is_active = true;
                    self.manager.start_search();
                }
            }

            StateEvent::SearchEnded { search_type } => {
                if matches!(search_type, SearchType::Vim) {
                    info!("VimSearchAdapter: Search ended, clearing");
                    self.clear();
                }
            }

            StateEvent::ModeChanged { from: _, to } => {
                // If we exit to Results mode and search is empty, clear
                if *to == AppMode::Results
                    && buffer.search_state.pattern.is_empty()
                    && self.is_active
                {
                    info!("VimSearchAdapter: Mode changed to Results with empty search, clearing");
                    self.clear();
                }

                // If we enter Search mode, activate
                if *to == AppMode::Search {
                    info!("VimSearchAdapter: Mode changed to Search, activating");
                    self.is_active = true;
                    if !self.manager.is_active() {
                        self.manager.start_search();
                    }
                }
            }

            _ => {}
        }
    }

    fn name(&self) -> &'static str {
        "VimSearchAdapter"
    }
}