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use std::{io, sync::Arc, time::Duration};
use arboard::Clipboard;
use futures::StreamExt;
use promkit_core::{
crossterm::{
cursor,
event::{Event, EventStream, KeyCode, KeyEvent, KeyEventKind, KeyEventState, KeyModifiers},
execute,
style::{Color, ContentStyle},
terminal::{self, disable_raw_mode, enable_raw_mode},
},
PaneFactory,
};
use promkit_widgets::text::{self, Text};
use tokio::{
sync::{mpsc, Mutex, RwLock},
task::JoinHandle,
};
use crate::{
config::{event::Matcher, Keybinds, ReactivityControl},
Context, ContextMonitor, Editor, PaneIndex, Processor, Renderer, SearchProvider,
SpinnerSpawner, ViewInitializer, ViewProvider, Visualizer, EMPTY_PANE,
};
fn spawn_debouncer<T: Send + 'static>(
mut debounce_rx: mpsc::Receiver<T>,
last_tx: mpsc::Sender<T>,
duration: Duration,
) -> tokio::task::JoinHandle<()> {
tokio::spawn(async move {
let mut last_query = None;
let mut delay = tokio::time::interval(duration);
loop {
tokio::select! {
maybe_query = debounce_rx.recv() => {
if let Some(query) = maybe_query {
last_query = Some(query);
} else {
break;
}
},
_ = delay.tick() => {
if let Some(text) = last_query.take() {
let _ = last_tx.send(text).await;
}
},
}
}
})
}
fn copy_to_clipboard(content: &str) -> text::State {
match Clipboard::new() {
Ok(mut clipboard) => match clipboard.set_text(content) {
Ok(_) => text::State {
text: Text::from("Copied to clipboard"),
style: ContentStyle {
foreground_color: Some(Color::Green),
..Default::default()
},
..Default::default()
},
Err(e) => text::State {
text: Text::from(format!("Failed to copy to clipboard: {}", e)),
style: ContentStyle {
foreground_color: Some(Color::Red),
..Default::default()
},
..Default::default()
},
},
// arboard fails (in the specific environment like linux?) on Clipboard::new()
// suppress the errors (but still show them) not to break the prompt
// https://github.com/1Password/arboard/issues/153
Err(e) => text::State {
text: Text::from(format!("Failed to setup clipboard: {}", e)),
style: ContentStyle {
foreground_color: Some(Color::Red),
..Default::default()
},
..Default::default()
},
}
}
enum Focus {
Editor,
Processor,
}
#[allow(clippy::too_many_arguments)]
pub async fn run<T: ViewProvider + SearchProvider>(
item: &'static str,
reactivity_control: ReactivityControl,
provider: &mut T,
editor: Editor,
loading_suggestions_task: JoinHandle<anyhow::Result<()>>,
no_hint: bool,
keybinds: Keybinds,
) -> anyhow::Result<()> {
enable_raw_mode()?;
execute!(io::stdout(), cursor::Hide)?;
let size = terminal::size()?;
let shared_renderer = Arc::new(Mutex::new(Renderer::try_init_draw(
[
editor.create_editor_pane(size.0, size.1),
EMPTY_PANE.to_owned(),
EMPTY_PANE.to_owned(),
EMPTY_PANE.to_owned(),
],
no_hint,
)?));
let ctx = Arc::new(Mutex::new(Context::new(size)));
let (last_query_tx, mut last_query_rx) = mpsc::channel(1);
let (debounce_query_tx, debounce_query_rx) = mpsc::channel(1);
let query_debouncer = spawn_debouncer(
debounce_query_rx,
last_query_tx,
reactivity_control.query_debounce_duration,
);
if !editor.text().is_empty() {
debounce_query_tx.send(editor.text()).await?;
}
let (last_resize_tx, mut last_resize_rx) = mpsc::channel::<(u16, u16)>(1);
let (debounce_resize_tx, debounce_resize_rx) = mpsc::channel(1);
let resize_debouncer = spawn_debouncer(
debounce_resize_rx,
last_resize_tx,
reactivity_control.resize_debounce_duration,
);
let spinner_spawner = SpinnerSpawner::new(ctx.clone());
let spinning =
spinner_spawner.spawn_spin_task(shared_renderer.clone(), reactivity_control.spin_duration);
let mut focus = Focus::Editor;
let (editor_event_tx, mut editor_event_rx) = mpsc::channel::<Event>(1);
let (processor_event_tx, mut processor_event_rx) = mpsc::channel::<Event>(1);
let (editor_copy_tx, mut editor_copy_rx) = mpsc::channel::<()>(1);
let (processor_copy_tx, mut processor_copy_rx) = mpsc::channel::<()>(1);
let (editor_focus_tx, mut editor_focus_rx) = mpsc::channel::<bool>(1);
let mut text_diff = [editor.text(), editor.text()];
let shared_editor = Arc::new(RwLock::new(editor));
let processor = Processor::new(ctx.clone());
let context_monitor = ContextMonitor::new(ctx.clone());
let initializer = ViewInitializer::new(ctx.clone());
let initializing = initializer.initialize(
provider,
item,
size,
shared_renderer.clone(),
keybinds.on_json_viewer,
);
let main_task: JoinHandle<anyhow::Result<()>> = {
let mut stream = EventStream::new();
let shared_renderer = shared_renderer.clone();
tokio::spawn(async move {
'main: loop {
tokio::select! {
Some(Ok(event)) = stream.next() => {
match event {
Event::Resize(width, height) => {
debounce_resize_tx.send((width, height)).await?;
},
event if keybinds.exit.matches(&event) => {
break 'main
},
Event::Key(KeyEvent {
code: KeyCode::Char('q'),
modifiers: KeyModifiers::CONTROL,
kind: KeyEventKind::Press,
state: KeyEventState::NONE,
}) => {
editor_copy_tx.send(()).await?;
},
Event::Key(KeyEvent {
code: KeyCode::Char('o'),
modifiers: KeyModifiers::CONTROL,
kind: KeyEventKind::Press,
state: KeyEventState::NONE,
}) => {
let mut pane = EMPTY_PANE.to_owned();
if context_monitor.is_idle().await {
processor_copy_tx.send(()).await?;
} else {
let size = terminal::size()?;
pane = text::State {
text: Text::from("Failed to copy while rendering is in progress.".to_string()),
style: ContentStyle {
foreground_color: Some(Color::Yellow),
..Default::default()
},
..Default::default()
}.create_pane(size.0, size.1);
}
{
shared_renderer.lock().await.update_and_draw([
(PaneIndex::Guide, pane),
])?;
}
},
Event::Key(KeyEvent {
code: KeyCode::Down,
modifiers: KeyModifiers::SHIFT,
kind: KeyEventKind::Press,
state: KeyEventState::NONE,
}) | Event::Key(KeyEvent {
code: KeyCode::Up,
modifiers: KeyModifiers::SHIFT,
kind: KeyEventKind::Press,
state: KeyEventState::NONE,
}) => {
match focus {
Focus::Editor => {
let mut pane = EMPTY_PANE.to_owned();
if context_monitor.is_idle().await {
focus = Focus::Processor;
editor_focus_tx.send(false).await?;
} else {
let size = terminal::size()?;
pane = text::State {
text: Text::from("Failed to switch pane while rendering is in progress.".to_string()),
style: ContentStyle {
foreground_color: Some(Color::Yellow),
..Default::default()
},
..Default::default()
}.create_pane(size.0, size.1);
}
{
shared_renderer.lock().await.update_and_draw([
(PaneIndex::Guide, pane),
])?;
}
},
Focus::Processor => {
focus = Focus::Editor;
editor_focus_tx.send(true).await?;
},
}
},
event => {
match focus {
Focus::Editor => {
editor_event_tx.send(event).await?;
},
Focus::Processor => {
processor_event_tx.send(event).await?;
},
}
},
}
},
else => {
break 'main;
}
}
}
Ok(())
})
};
let editor_task: JoinHandle<anyhow::Result<()>> = {
let shared_renderer = shared_renderer.clone();
let shared_editor = shared_editor.clone();
tokio::spawn(async move {
loop {
tokio::select! {
Some(focus) = editor_focus_rx.recv() => {
let (editor_pane, guide_pane) = {
let mut editor = shared_editor.write().await;
if focus {
editor.focus();
} else {
editor.defocus();
}
(
editor.create_editor_pane(size.0, size.1),
editor.create_guide_pane(size.0, size.1),
)
};
{
shared_renderer.lock().await.update_and_draw([
(PaneIndex::Editor, editor_pane),
(PaneIndex::Guide, guide_pane),
])?;
}
}
Some(()) = editor_copy_rx.recv() => {
let text = {
let editor = shared_editor.write().await;
editor.text()
};
let guide = copy_to_clipboard(&text);
let size = terminal::size()?;
let pane = guide.create_pane(size.0, size.1);
{
shared_renderer.lock().await.update_and_draw([
(PaneIndex::Guide, pane),
])?;
}
}
Some(event) = editor_event_rx.recv() => {
let size = terminal::size()?;
let (editor_pane, guide_pane, searcher_pane) = {
let mut editor = shared_editor.write().await;
editor.operate(&event).await?;
let current_text = editor.text();
if current_text != text_diff[1] {
debounce_query_tx.send(current_text.clone()).await?;
text_diff[0] = text_diff[1].clone();
text_diff[1] = current_text;
}
(
editor.create_editor_pane(size.0, size.1),
editor.create_guide_pane(size.0, size.1),
editor.create_searcher_pane(size.0, size.1),
)
};
{
shared_renderer.lock().await.update_and_draw([
(PaneIndex::Editor, editor_pane),
(PaneIndex::Guide, guide_pane),
(PaneIndex::Search, searcher_pane),
])?;
}
}
else => {
break
}
}
}
Ok(())
})
};
let processor_task: JoinHandle<anyhow::Result<()>> = {
let shared_renderer = shared_renderer.clone();
let shared_editor = shared_editor.clone();
let visualizer = initializing.await?;
let shared_visualizer = Arc::new(Mutex::new(visualizer));
tokio::spawn(async move {
loop {
tokio::select! {
Some(()) = processor_copy_rx.recv() => {
let visualizer = shared_visualizer.lock().await;
let guide = copy_to_clipboard(&visualizer.content_to_copy().await);
let size = terminal::size()?;
let pane = guide.create_pane(size.0, size.1);
{
shared_renderer.lock().await.update_and_draw([
(PaneIndex::Guide, pane),
])?;
}
}
Some(event) = processor_event_rx.recv() => {
let pane = {
let mut visualizer = shared_visualizer.lock().await;
visualizer.create_pane_from_event((size.0, size.1), &event).await
};
{
shared_renderer.lock().await.update_and_draw([
(PaneIndex::Processor, pane),
])?;
}
}
Some(query) = last_query_rx.recv() => {
processor.render_result(
shared_visualizer.clone(),
query,
shared_renderer.clone(),
).await;
}
Some(area) = last_resize_rx.recv() => {
let (editor_pane, guide_pane, searcher_pane) = {
let editor = shared_editor.read().await;
(
editor.create_editor_pane(size.0, size.1),
editor.create_guide_pane(size.0, size.1),
editor.create_searcher_pane(size.0, size.1),
)
};
{
shared_renderer.lock().await.update_and_draw([
(PaneIndex::Editor, editor_pane),
(PaneIndex::Guide, guide_pane),
(PaneIndex::Search, searcher_pane),
])?;
}
let text = {
let editor = shared_editor.read().await;
editor.text()
};
processor.render_on_resize(
shared_visualizer.clone(),
area,
text,
shared_renderer.clone(),
).await;
}
else => {
break
}
}
}
Ok(())
})
};
main_task.await??;
loading_suggestions_task.abort();
spinning.abort();
query_debouncer.abort();
resize_debouncer.abort();
editor_task.abort();
processor_task.abort();
execute!(io::stdout(), cursor::Show)?;
disable_raw_mode()?;
Ok(())
}