use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};

use crate::app::mode;
use crate::app::runtime::actions::Action;
use crate::app::runtime::commands::apply_command;
use crate::app::state::rest::AppStateRest;
use crate::app::state::types::Overlay;
use crate::controller::command::parse_command;

pub fn handle_key(key: KeyEvent, state: &mut AppStateRest) -> Vec<Action> {
    match key.code {
        KeyCode::Char('c') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::QuitConfirm]
        }
        KeyCode::Char('d') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::CloseOverlay]
        }
        KeyCode::Enter => {
            if state.misc.overlay.is_active() {
                return handle_overlay_enter(state);
            }
            let text = state.input.buffer.clone();
            if text.starts_with('/') {
                return apply_command(parse_command(&text));
            }
            vec![Action::SubmitInput(text)]
        }
        KeyCode::Backspace => {
            vec![Action::DeleteChar]
        }
        KeyCode::Delete => {
            vec![Action::DeleteCharRight]
        }
        KeyCode::Left => {
            vec![Action::CursorLeft]
        }
        KeyCode::Right => {
            vec![Action::CursorRight]
        }
        KeyCode::Up => {
            vec![Action::HistoryUp]
        }
        KeyCode::Down => {
            vec![Action::HistoryDown]
        }
        KeyCode::PageUp => {
            vec![Action::ScrollUp]
        }
        KeyCode::PageDown => {
            vec![Action::ScrollDown]
        }
        KeyCode::Char('h') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::Help)]
        }
        KeyCode::Char('p') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::Settings)]
        }
        KeyCode::Char('a') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::ToggleYoloArm]
        }
        KeyCode::Char('m') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::CycleAgentMode]
        }
        KeyCode::Char('b') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::Bash)]
        }
        KeyCode::Char('s') if key.modifiers.contains(KeyModifiers::CONTROL)
            && !key.modifiers.contains(KeyModifiers::SHIFT) =>
        {
            vec![Action::RefreshSessions, Action::OpenOverlay(Overlay::SessionHub)]
        }
        KeyCode::Char('S') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::Security)]
        }
        KeyCode::Char('t') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::Todo)]
        }
        KeyCode::Char('w') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::Workflow)]
        }
        KeyCode::Char('k') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::KeyInput)]
        }
        KeyCode::Esc => {
            if state.misc.overlay.is_active() {
                vec![Action::CloseOverlay]
            } else {
                Vec::new()
            }
        }
        KeyCode::Tab => {
            Vec::new()
        }
        KeyCode::Char('l') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::Learning)]
        }
        KeyCode::Char('u') if key.modifiers.contains(KeyModifiers::CONTROL) => {
            vec![Action::OpenOverlay(Overlay::Usage)]
        }
        KeyCode::Char(c) => {
            vec![Action::InsertChar(c)]
        }
        _ => Vec::new(),
    }
}

fn handle_overlay_enter(state: &mut AppStateRest) -> Vec<Action> {
    match state.misc.overlay {
        Overlay::Bash => {
            let command = state.input.buffer.clone();
            mode::bash::handle_bash_submit(state, command);
            Vec::new()
        }
        Overlay::Settings => {
            mode::settings::cycle_internet_mode(&mut state.settings);
            state.dirty = true;
            Vec::new()
        }
        Overlay::Todo => {
            mode::todo::handle_todo_toggle(state);
            Vec::new()
        }
        Overlay::Security => {
            mode::security::handle_security_action(state, &Action::ToggleYoloArm);
            Vec::new()
        }
        Overlay::QuitConfirm => {
            vec![mode::quit_confirm::handle_quit_confirm(true)]
        }
        _ => Vec::new(),
    }
}