use std::io;

use ratatui::crossterm::event::{self, Event, KeyCode, KeyEvent, KeyModifiers};

use crate::app::App;

pub fn handle_event(app: &mut App) -> io::Result<bool> {
    if let Event::Key(key) = event::read()? {
        match app.view {
            crate::app::ViewState::Dashboard => {
                if handle_dashboard_keybinds(key, app) {
                    return Ok(true);
                }
            }
            crate::app::ViewState::InstalledPackages => {
                if app.showing_search_window {
                    handle_search_keybinds(key, app);
                } else if handle_installed_packages_keybinds(key, app) {
                    return Ok(true);
                }
            }
        }
    }

    Ok(false)
}

fn handle_search_keybinds(key: KeyEvent, app: &mut App) {
    match key.code {
        KeyCode::Esc => app.toggle_search_window(),
        KeyCode::Enter => {
            app.search();
            app.toggle_search_window();
        }
        _ => {
            app.textarea.input_without_shortcuts(key);
            app.search_found = Some(app.search());
        }
    }
}

fn handle_installed_packages_keybinds(key: KeyEvent, app: &mut App) -> bool {
    match key.modifiers {
        KeyModifiers::CONTROL => match key.code {
            KeyCode::Char('d') => app
                .list_state
                .select(Some(app.list_state.selected().unwrap_or(0) + 30)),
            KeyCode::Char('u') => {
                if let Some(selected) = app.list_state.selected() {
                    if selected < 30 {
                        app.list_state.select(Some(0));
                    } else {
                        app.list_state.select(Some(selected - 30));
                    }
                }
            }
            _ => {}
        },
        _ => match key.code {
            KeyCode::Char('q') => return true,
            KeyCode::Char('j') => app.list_state.select_next(),
            KeyCode::Char('k') => app.list_state.select_previous(),
            KeyCode::Char('/') => app.toggle_search_window(),
            KeyCode::Char('n') => app.next_search(),
            KeyCode::Char('N') => app.prev_search(),

            KeyCode::Tab => app.cycle_current_tab(),

            _ => {}
        },
    }

    false
}

fn handle_dashboard_keybinds(key: KeyEvent, app: &mut App) -> bool {
    match key.code {
        KeyCode::Char('q') => return true,
        KeyCode::Tab => app.cycle_current_tab(),

        _ => {}
    }

    false
}