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use {
crate::*,
anyhow::Result,
crokey::CroKey,
crossbeam::channel::{bounded, select},
crossterm::event::Event,
termimad::EventSource,
};
/// Run the mission and return the reference to the next
/// job to run, if any
pub fn run(
w: &mut W,
mission: Mission,
event_source: &EventSource,
) -> Result<Option<JobRef>> {
let keybindings = mission.settings.keybindings.clone();
let (watch_sender, watch_receiver) = bounded(0);
let mut watcher = notify::recommended_watcher(move |res| match res {
Ok(_) => {
debug!("notify event received");
if let Err(e) = watch_sender.send(()) {
debug!("error when notifying on inotify event: {}", e);
}
}
Err(e) => warn!("watch error: {:?}", e),
})?;
mission.add_watchs(&mut watcher)?;
let executor = Executor::new(&mission)?;
let mut state = AppState::new(mission)?;
state.computation_starts();
state.draw(w)?;
executor.start(state.new_task())?; // first computation
let user_events = event_source.receiver();
let mut next_job: Option<JobRef> = None;
#[allow(unused_mut)]
loop {
let mut action: Option<&Action> = None;
select! {
recv(user_events) -> user_event => {
match user_event?.event {
Event::Resize(mut width, mut height) => {
// I don't know why but Crossterm seems to always report an
// understimated size on Windows
#[cfg(windows)]
{
width += 1;
height += 1;
}
state.resize(width, height);
}
Event::Key(key_event) => {
debug!("key pressed: {}", CroKey::from(key_event));
action = keybindings.get(key_event);
}
_ => {}
}
event_source.unblock(false);
}
recv(watch_receiver) -> _ => {
debug!("got a watcher event");
if let Err(e) = executor.start(state.new_task()) {
debug!("error sending task: {}", e);
} else {
state.computation_starts();
}
}
recv(executor.line_receiver) -> info => {
match info? {
CommandExecInfo::Line(line) => {
state.add_line(line);
}
CommandExecInfo::End { status } => {
info!("execution finished with status: {:?}", status);
// computation finished
if let Some(output) = state.take_output() {
let cmd_result = CommandResult::new(output, status)?;
state.set_result(cmd_result);
action = state.action();
} else {
warn!("a computation finished but didn't start?");
state.computation_stops();
}
}
CommandExecInfo::Error(e) => {
warn!("error in computation: {}", e);
state.computation_stops();
break;
}
CommandExecInfo::Interruption => {
debug!("command was interrupted (by us)");
}
}
}
}
if let Some(action) = action.take() {
debug!("requested action: {action:?}");
match action {
Action::Internal(internal) => {
match internal {
Internal::Back => {
if !state.close_help() {
next_job = Some(JobRef::Previous);
break;
}
}
Internal::Help => {
state.toggle_help();
}
Internal::Quit => {
break;
}
Internal::ToggleRawOutput => {
state.toggle_raw_output();
}
Internal::ToggleSummary => {
state.toggle_summary_mode();
}
Internal::ToggleWrap => {
state.toggle_wrap_mode();
}
Internal::ToggleBacktrace => {
state.toggle_backtrace();
if let Err(e) = executor.start(state.new_task()) {
debug!("error sending task: {}", e);
} else {
state.computation_starts();
}
}
Internal::Scroll(scroll_command) => {
let scroll_command = *scroll_command;
state.apply_scroll_command(scroll_command);
}
}
}
Action::Job(job_ref) => {
next_job = Some((*job_ref).clone());
break;
}
}
}
state.draw(w)?;
}
executor.die()?;
Ok(next_job)
}