//! UI rendering module.
//!
//! Routes rendering by screen (Loading → Auth → Main) and checks terminal size.

mod auth;
pub mod chat_list;
mod compose_bar;
pub mod components;
pub mod footer;
mod loading;
mod main_screen;
pub mod messages;
mod modals;
pub mod profile;

use crate::app::{App, AppScreen};
use crate::tdlib::TdClientTrait;
use ratatui::layout::Alignment;
use ratatui::style::{Color, Modifier, Style};
use ratatui::widgets::Paragraph;
use ratatui::Frame;

/// Минимальная высота терминала
const MIN_HEIGHT: u16 = 10;
/// Минимальная ширина терминала
const MIN_WIDTH: u16 = 40;

pub fn render<T: TdClientTrait>(f: &mut Frame, app: &mut App<T>) {
    let area = f.area();

    // Проверяем минимальный размер терминала
    if area.width < MIN_WIDTH || area.height < MIN_HEIGHT {
        render_size_warning(f, area.width, area.height);
        return;
    }

    match app.screen {
        AppScreen::Loading => loading::render(f, app),
        AppScreen::Auth => auth::render(f, app),
        AppScreen::Main => main_screen::render(f, app),
    }

    // Global overlay: account switcher (renders on top of ANY screen)
    if app.account_switcher.is_some() {
        modals::render_account_switcher(f, area, app);
    }
}

fn render_size_warning(f: &mut Frame, width: u16, height: u16) {
    let message = format!("{}x{}\nМинимум: {}x{}", width, height, MIN_WIDTH, MIN_HEIGHT);
    let warning = Paragraph::new(message)
        .style(
            Style::default()
                .fg(Color::Yellow)
                .add_modifier(Modifier::BOLD),
        )
        .alignment(Alignment::Center);
    f.render_widget(warning, f.area());
}