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+use crossterm::cursor; +use crossterm::{ + cursor::MoveTo, + event::{Event, EventStream, KeyCode, KeyModifiers}, + terminal::{self, disable_raw_mode, enable_raw_mode}, + ExecutableCommand, Result, +}; +use futures::StreamExt; +use tokio::time::sleep; + +const ONE_SECOND: Duration = Duration::from_secs(1); + +#[tokio::main(flavor = "current_thread")] +async fn main() { + let timer = Pomodoro::new(); + + let timer_task = tokio::spawn(async move { timer.main_loop().await }); + let ui_task = tokio::spawn(async move { Ui::main_loop().await }); + + tokio::select! ( + _ = timer_task => (), + _ = ui_task => (), + ); + + Ui::clear_terminal().unwrap(); +} + +struct Ui; + +impl Ui { + async fn main_loop() { + let mut reader = EventStream::new(); + + loop { + enable_raw_mode().unwrap(); + stdout().execute(cursor::Hide).unwrap(); + + if let Some(Ok(Event::Key(key_event))) = reader.next().await { + if Self::is_char_q(key_event) || Self::is_ctrl_c(&key_event) { + disable_raw_mode().unwrap(); + stdout().execute(cursor::Show).unwrap(); + + return; + } + } + } + } + + fn is_char_q(key_event: crossterm::event::KeyEvent) -> bool { + key_event.code == KeyCode::Char('q') + } + + fn is_ctrl_c(key_event: &crossterm::event::KeyEvent) -> bool { + key_event.code == KeyCode::Char('c') && key_event.modifiers.contains(KeyModifiers::CONTROL) + } + + fn clear_terminal() -> Result<()> { + let mut stdout = stdout(); + stdout.execute(terminal::Clear(terminal::ClearType::All))?; + stdout.execute(terminal::Clear(terminal::ClearType::Purge))?; + stdout.execute(MoveTo(0, 0))?; + Ok(()) + } +} + +struct Pomodoro { + interval_idx: usize, + intervals: [Interval; 8], + remaining: Duration, + stdout: Stdout, +} + +impl Pomodoro { + fn new() -> Self { + let intervals = Interval::default_sequence(); + let interval_idx = 0; + let remaining = intervals[interval_idx].get_duration(); + + Pomodoro { + interval_idx, + intervals, + remaining, + stdout: stdout(), + } + } + + fn show_status(&mut self) -> Result<()> { + Ui::clear_terminal()?; + write!( + self.stdout, + "currently: {} ({}/{})", + self.intervals[self.interval_idx].get_description(), + self.interval_idx + 1, + self.intervals.len() + )?; + self.stdout.execute(MoveTo(0, 1))?; + write!(self.stdout, "remaining: {}", format(self.remaining))?; + self.stdout.flush()?; + Ok(()) + } + + async fn main_loop(mut self) -> Result<()> { + loop { + 'inner: loop { + self.show_status()?; + sleep(ONE_SECOND).await; + self.remaining -= ONE_SECOND; + + if self.remaining.is_zero() { + self.show_status()?; + break 'inner; + } + } + + self.next_interval(); + self.remaining = self.current_interval().get_duration(); + self.send_notification(self.current_interval().get_message()); + } + } + + fn next_interval(&mut self) { + self.interval_idx += 1; + self.interval_idx %= self.intervals.len(); + } + + fn current_interval(&self) -> Interval { + self.intervals[self.interval_idx] + } + + fn send_notification(&self, message: &str) { + let mut command = Command::new("notify-send"); + command.args(["-t", "0", message]); + command.status().unwrap(); + } +} + +#[derive(Debug, Clone, Copy)] +enum Interval { + Work(Duration), + ShortBreak(Duration), + LongBreak(Duration), +} + +impl Interval { + const FIVE_MINUTES: Duration = Duration::from_secs(5 * 60); + const FIFTEEN_MINUTES: Duration = Duration::from_secs(15 * 60); + const TWENTY_FIVE_MINUTES: Duration = Duration::from_secs(25 * 60); + + fn default_sequence() -> [Self; 8] { + [ + Self::Work(Self::TWENTY_FIVE_MINUTES), + Self::ShortBreak(Self::FIVE_MINUTES), + Self::Work(Self::TWENTY_FIVE_MINUTES), + Self::ShortBreak(Self::FIVE_MINUTES), + Self::Work(Self::TWENTY_FIVE_MINUTES), + Self::ShortBreak(Self::FIVE_MINUTES), + Self::Work(Self::TWENTY_FIVE_MINUTES), + Self::LongBreak(Self::FIFTEEN_MINUTES), + ] + } + + fn get_duration(&self) -> Duration { + match self { + Interval::Work(d) => *d, + Interval::ShortBreak(d) => *d, + Interval::LongBreak(d) => *d, + } + } + + fn get_description(&self) -> &str { + match self { + Interval::Work(_) => "work", + Interval::ShortBreak(_) => "short break", + Interval::LongBreak(_) => "long break", + } + } + + fn get_message(&self) -> &str { + match self { + Interval::Work(_) => "back to work", + Interval::ShortBreak(_) => "take a break", + Interval::LongBreak(_) => "big break, you earned it!", + } + } +} + +fn format(dur: Duration) -> String { + let min = dur.as_secs() / 60; + let sec = dur.as_secs() % 60; + + format!("{min}:{sec:0>2}") +}