From 530f8ca31782ba0de37c6c2961f85c87a83dff4f Mon Sep 17 00:00:00 2001
From: sxyazi <sxyazi@gmail.com>
Date: Thu, 2 Nov 2023 01:58:07 +0800
Subject: [PATCH] WIP [no ci]

---
 yazi-core/src/completion/commands/trigger.rs | 37 +++++++++++++++++---
 yazi-fm/src/completion/completion.rs         | 10 ++++--
 yazi-fm/src/executor.rs                      |  2 +-
 3 files changed, 41 insertions(+), 8 deletions(-)

diff --git a/yazi-core/src/completion/commands/trigger.rs b/yazi-core/src/completion/commands/trigger.rs
index 1b3be274..38fdb7ab 100644
--- a/yazi-core/src/completion/commands/trigger.rs
+++ b/yazi-core/src/completion/commands/trigger.rs
@@ -1,7 +1,8 @@
+use tokio::fs;
 use tracing::info;
-use yazi_config::keymap::Exec;
+use yazi_config::keymap::{Exec, KeymapLayer};
 
-use crate::completion::Completion;
+use crate::{completion::Completion, emit};
 
 pub struct Opt<'a> {
 	word:   &'a str,
@@ -11,7 +12,7 @@ pub struct Opt<'a> {
 impl<'a> From<&'a Exec> for Opt<'a> {
 	fn from(e: &'a Exec) -> Self {
 		Self {
-			word:   e.args.get(0).map(|w| w.as_str()).unwrap_or_default(),
+			word:   e.args.first().map(|w| w.as_str()).unwrap_or_default(),
 			ticket: e.named.get("ticket").and_then(|v| v.parse().ok()).unwrap_or(0),
 		}
 	}
@@ -27,8 +28,34 @@ impl Completion {
 		self.close(false);
 		self.ticket = opt.ticket;
 
-		info!("trigger completion: {}", opt.word);
-		tokio::spawn(async move {});
+		let word = opt.word.to_owned();
+		let ticket = self.ticket;
+		tokio::spawn(async move {
+			let (parent, child) = word.rsplit_once('/').unwrap_or((".", word.as_str()));
+
+			let mut dir = fs::read_dir(parent).await?;
+			let mut cands = Vec::new();
+			while let Ok(Some(f)) = dir.next_entry().await {
+				let name = f.file_name().to_string_lossy().into_owned();
+				if !name.starts_with(child) {
+					continue;
+				}
+
+				cands.push(name);
+				if cands.len() >= 20 {
+					break;
+				}
+			}
+
+			if !cands.is_empty() {
+				emit!(Call(
+					Exec::call("show", cands).with("ticket", ticket).vec(),
+					KeymapLayer::Completion
+				));
+			}
+
+			Ok::<(), anyhow::Error>(())
+		});
 		false
 	}
 }
diff --git a/yazi-fm/src/completion/completion.rs b/yazi-fm/src/completion/completion.rs
index 06958bec..b5cb1bd7 100644
--- a/yazi-fm/src/completion/completion.rs
+++ b/yazi-fm/src/completion/completion.rs
@@ -1,4 +1,4 @@
-use ratatui::{buffer::Buffer, layout::Rect, widgets::{Block, BorderType, Borders, Cell, Clear, Row, Table, Widget}};
+use ratatui::{buffer::Buffer, layout::Rect, widgets::{Block, BorderType, Borders, Cell, Clear, List, ListItem, Row, Table, Widget}};
 use yazi_core::Ctx;
 
 pub(crate) struct Completion<'a> {
@@ -11,7 +11,13 @@ impl<'a> Completion<'a> {
 
 impl<'a> Widget for Completion<'a> {
 	fn render(self, _: Rect, buf: &mut Buffer) {
-		todo!()
+		let items =
+			self.cx.completion.items.iter().map(|x| ListItem::new(x.as_str())).collect::<Vec<_>>();
+
+		// TODO
+		Clear.render(Rect { x: 10, y: 10, width: 10, height: 20 }, buf);
+		List::new(items).render(Rect { x: 10, y: 10, width: 10, height: 20 }, buf);
+
 		// let completion = &self.cx.input.completion;
 		// let area = self.cx.area(&completion.position);
 
diff --git a/yazi-fm/src/executor.rs b/yazi-fm/src/executor.rs
index 0631dfd0..fa6fcc1e 100644
--- a/yazi-fm/src/executor.rs
+++ b/yazi-fm/src/executor.rs
@@ -286,7 +286,7 @@ impl Executor {
 			"close" => cx.completion.close(exec.named.contains_key("submit")),
 
 			"arrow" => {
-				let step: isize = exec.args.get(0).and_then(|s| s.parse().ok()).unwrap_or(0);
+				let step: isize = exec.args.first().and_then(|s| s.parse().ok()).unwrap_or(0);
 				if step > 0 {
 					cx.completion.next(step as usize)
 				} else {