pub mod components;

use ratatui::layout::{Constraint, Direction, Layout};
use ratatui::Frame;

use crate::app::SyncStats;
use crate::domain::models::*;
use components::*;

#[derive(Debug, Clone, PartialEq)]
pub enum Focus {
    Tabs,
    TaskList,
    Detail,
}

#[derive(Debug, Clone, PartialEq)]
pub enum Popup {
    Input,
    DatePicker,
    ConfirmDelete,
    DeviceAuth { url: String, code: String },
}

#[derive(Debug, Clone, PartialEq)]
pub enum NetworkStatus {
    Online,
    Offline,
    Syncing,
}

pub struct AppView<'a> {
    pub lists: &'a [TaskList],
    pub tasks: &'a [Task],
    pub selected_list: usize,
    pub selected_task: usize,
    pub focus: Focus,
    pub show_popup: Option<&'a Popup>,
    pub popup_input: &'a str,
    pub popup_cursor: usize,
    pub draft_date: chrono::NaiveDateTime,
    pub network_status: &'a NetworkStatus,
    pub task_list_scroll: u16,
    pub detail_scroll: u16,
    pub auth_error: Option<&'a str>,
    pub sync_stats: &'a SyncStats,
}

pub fn draw(frame: &mut Frame, view: AppView) {
    let area = frame.area();

    let main_layout = Layout::default()
        .direction(Direction::Vertical)
        .constraints([
            Constraint::Length(3),
            Constraint::Min(0),
            Constraint::Length(1),
        ])
        .split(area);

    let tabs_area = main_layout[0];
    let body_area = main_layout[1];
    let status_area = main_layout[2];

    let is_tabs_focused = view.focus == Focus::Tabs;
    render_tabs_bar(frame, tabs_area, view.lists, view.selected_list, is_tabs_focused);

    let body_layout = Layout::default()
        .direction(Direction::Horizontal)
        .constraints([Constraint::Percentage(50), Constraint::Percentage(50)])
        .split(body_area);

    let is_task_list_focused = view.focus == Focus::TaskList;
    render_task_list(
        frame,
        body_layout[0],
        view.tasks,
        view.selected_task,
        is_task_list_focused,
        view.task_list_scroll,
    );

    let is_detail_focused = view.focus == Focus::Detail;
    render_detail(
        frame,
        body_layout[1],
        view.tasks.get(view.selected_task),
        is_detail_focused,
        view.detail_scroll,
    );

    render_status_bar(frame, status_area, view.network_status, view.sync_stats);

    if let Some(popup) = view.show_popup {
        match popup {
            Popup::Input => render_input_popup(frame, area, view.popup_input, view.popup_cursor),
            Popup::DatePicker => render_date_picker(frame, area, view.draft_date),
            Popup::ConfirmDelete => render_confirm_popup(frame, area),
            Popup::DeviceAuth { url, code } => render_device_auth_popup(frame, area, url, code, view.auth_error),
        }
    }
}