fix: improve UI(#1)

* fix: improve ui/use `quit_zellij` command

improved UI:
  1. centered text
  2. added help text for the 2 available key actions

plugin command:
since only the current session may be killed let's use `quit_zellij` which doesn't require listening to session updates.

* chore: add preCommit script/cargo lock update

* Update README.md

README.md

@@ -1,34 +1,36 @@
-## About
+# zj-quit 
 
-This is an example [Zellij][zellij] plugin in Rust. It can be used as a template to start developing your own plugins.
+A [zellij](https://zellij.dev/) plugin that prompts for confirmation before killing the current session.
 
-More about Zellij plugins: [Zellij Documentation][docs]
+![image](https://github.com/cristiand391/zj-quit/assets/6853656/0b2537c4-6872-402b-aa5d-f0713c46c32b)
 
-[zellij]: https://github.com/zellij-org/zellij
-[docs]: https://zellij.dev/documentation/plugins.html
+This has been requested multiple times by users:
+* https://github.com/zellij-org/zellij/issues/467
+* https://github.com/zellij-org/zellij/issues/1229
+* https://github.com/zellij-org/zellij/issues/3147
 
-## Development
+so I decided go the *zellij way* ™️ and made a plugin for this :)
 
-*Note*: you will need to have `wasm32-wasi` added to rust as a target to build the plugin. This can be done with `rustup target add wasm32-wasi`.
+## Usage
 
-## Inside Zellij
-![img-2023-06-14-143355](https://github.com/zellij-org/rust-plugin-example/assets/795598/d9e563dc-5d71-4e10-af5b-190365bdca3b)
-
-You can load the `./plugin-dev-workspace.kdl` file as a Zellij layout to get a terminal development environment:
-
-Either when starting Zellij:
-```
-zellij --layout ./plugin-dev-workspace.kdl
+Download the last release available at https://github.com/cristiand391/zj-quit/releases/ and set up an alias for it:
+```kdl
+plugins {
+  zj-quit location="file:/path/to/zj-quit.wasm"
+}
 ```
-*Note that in this case there's a small bug where the plugin is opened twice, it can be remedied by closing the oldest instance or loading with the new-tab action as secified below - this will be addressed in the near future*
 
-Or from a running Zellij session:
-```bash
-zellij action new-tab --layout ./plugin-dev-workspace.kdl
-```
+https://zellij.dev/documentation/plugin-aliases
 
-## Otherwise
+then set a keybind to launch it in a floating window:
 
-1. Build the project: `cargo build`
-2. Load it inside a running Zellij session: `zellij action start-or-reload-plugin file:target/wasm32-wasi/debug/rust-plugin-example.wasm`
-3. Repeat on changes (perhaps with a `watchexec` or similar command to run on fs changes).
+```kdl
+keybinds clear-defaults=true {
+  shared_except "locked" {
+    bind "Ctrl q" {
+      LaunchOrFocusPlugin "zj-quit" {
+        floating true
+      }
+    }
+}
+```

scripts/check.js

@@ -0,0 +1,6 @@
+const util = require('node:util');
+const exec = util.promisify(require('node:child_process').exec);
+
+exports.preCommit = async () => {
+  await exec('cargo check')
+};

src/main.rs

@@ -3,50 +3,55 @@ use zellij_tile::prelude::*;
 use std::collections::BTreeMap;
 
 #[derive(Default)]
-struct State {
-    current_session_name: String,
-}
+struct State {}
 
 register_plugin!(State);
 
 impl ZellijPlugin for State {
     fn load(&mut self, _configuration: BTreeMap<String, String>) {
-        request_permission(&[
-            PermissionType::ReadApplicationState,
-            PermissionType::ChangeApplicationState,
-        ]);
-        subscribe(&[EventType::SessionUpdate, EventType::Key]);
+        request_permission(&[PermissionType::ChangeApplicationState]);
+        subscribe(&[EventType::Key]);
     }
 
     fn update(&mut self, event: Event) -> bool {
-        let mut should_render = false;
         match event {
-            Event::SessionUpdate(session_infos, _) => {
-                if let Some(current_session) = session_infos.iter().find(|s| s.is_current_session) {
-                    self.current_session_name = current_session.name.clone();
-                    should_render = true;
-                }
-            }
             Event::Key(key) => {
                 if let Key::Char('\n') = key {
-                    kill_sessions(&[self.current_session_name.clone()])
+                    quit_zellij()
                 } else if let Key::Esc = key {
                     hide_self();
                 }
             }
             _ => (),
         };
-        should_render
+        false
     }
 
-    fn render(&mut self, _rows: usize, _cols: usize) {
-        if !self.current_session_name.is_empty() {
-            println!(
-                "Are you sure you want to kill the current session ({})?",
-                self.current_session_name
-            );
-            println!("Press Enter to confirm.");
-            println!("Press Esc to close this pane.");
-        }
+    fn render(&mut self, rows: usize, cols: usize) {
+        let confirmation_text = "Are you sure you want to kill the current session?".to_string();
+        let confirmation_y_location = (rows / 2) - 2;
+        let confirmation_x_location = cols.saturating_sub(confirmation_text.chars().count()) / 2;
+
+        print_text_with_coordinates(
+            Text::new(confirmation_text),
+            confirmation_x_location,
+            confirmation_y_location,
+            None,
+            None,
+        );
+
+        let help_text = "Help: <ENTER> - Confirm, <ESC> - Hide";
+        let help_text_y_location = rows - 1;
+        let help_text_x_location = cols.saturating_sub(help_text.chars().count()) / 2;
+
+        print_text_with_coordinates(
+            Text::new(help_text)
+                .color_range(3, 6..13)
+                .color_range(3, 25..30),
+            help_text_x_location,
+            help_text_y_location,
+            None,
+            None,
+        );
     }
 }