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use anyhow::Result;
use crossterm::{
event::{self, Event, KeyCode, KeyEventKind},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::{backend::CrosstermBackend, Terminal};
use std::io;
mod state;
use crate::{exercise::Exercise, state_file::StateFile};
use self::state::UiState;
pub fn list(state_file: &mut StateFile, exercises: &[Exercise]) -> Result<()> {
let mut stdout = io::stdout().lock();
stdout.execute(EnterAlternateScreen)?;
enable_raw_mode()?;
let mut terminal = Terminal::new(CrosstermBackend::new(&mut stdout))?;
terminal.clear()?;
let mut ui_state = UiState::new(state_file, exercises);
'outer: loop {
terminal.draw(|frame| ui_state.draw(frame))?;
let key = loop {
match event::read()? {
Event::Key(key) => {
if key.kind != KeyEventKind::Press {
continue;
}
break key;
}
// Redraw
Event::Resize(_, _) => continue 'outer,
// Ignore
Event::FocusGained | Event::FocusLost | Event::Mouse(_) | Event::Paste(_) => (),
}
};
match key.code {
KeyCode::Char('q') => break,
KeyCode::Down | KeyCode::Char('j') => ui_state.select_next(),
KeyCode::Up | KeyCode::Char('k') => ui_state.select_previous(),
KeyCode::Home | KeyCode::Char('g') => ui_state.select_first(),
KeyCode::End | KeyCode::Char('G') => ui_state.select_last(),
KeyCode::Char('c') => {
state_file.set_next_exercise_ind(ui_state.selected())?;
ui_state.table = ui_state.table.rows(UiState::rows(state_file, exercises));
}
_ => (),
}
}
drop(terminal);
stdout.execute(LeaveAlternateScreen)?;
disable_raw_mode()?;
Ok(())
}
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