feat(plugins): session manager cwd and new filepicker (#3200)

* prototype

* folder selection ui in session manager

* overhaul strider

* scan folder host command

* get strider to work from the cli and some cli pipe fixes

* some ux improvements to strider

* improve strider's ui

* make strider ui responsive

* make session-manager new ui parts responsive

* fix tests

* style(fmt): rustfmt

32 files changed, 1390 insertions, 284 deletions

diff --git a/Cargo.lock b/Cargo.lock
index b109ca64f..279ee4c08 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3338,6 +3338,7 @@ dependencies = [
  "fuzzy-matcher",
  "humantime",
  "unicode-width",
+ "uuid",
  "zellij-tile",
 ]
 
@@ -4191,9 +4192,9 @@ checksum = "936e4b492acfd135421d8dca4b1aa80a7bfc26e702ef3af710e0752684df5372"
 
 [[package]]
 name = "uuid"
-version = "1.4.1"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79daa5ed5740825c40b389c5e50312b9c86df53fccd33f281df655642b43869d"
+checksum = "f00cc9702ca12d3c81455259621e676d0f7251cec66a21e98fe2e9a37db93b2a"
 dependencies = [
  "getrandom 0.2.10",
  "serde",
diff --git a/default-plugins/fixture-plugin-for-tests/src/main.rs b/default-plugins/fixture-plugin-for-tests/src/main.rs
index cd4fb45a1..c241281a1 100644
--- a/default-plugins/fixture-plugin-for-tests/src/main.rs
+++ b/default-plugins/fixture-plugin-for-tests/src/main.rs
@@ -67,6 +67,7 @@ impl ZellijPlugin for State {
             EventType::FileSystemUpdate,
             EventType::FileSystemDelete,
         ]);
+        watch_filesystem();
     }
 
     fn update(&mut self, event: Event) -> bool {
diff --git a/default-plugins/session-manager/Cargo.toml b/default-plugins/session-manager/Cargo.toml
index 97100ed69..deb8cec55 100644
--- a/default-plugins/session-manager/Cargo.toml
+++ b/default-plugins/session-manager/Cargo.toml
@@ -11,3 +11,4 @@ chrono = "0.4.0"
 fuzzy-matcher = "0.3.7"
 unicode-width = "0.1.10"
 humantime = "2.1.0"
+uuid = { version = "1.7.0", features = ["v4"] }
diff --git a/default-plugins/session-manager/src/main.rs b/default-plugins/session-manager/src/main.rs
index 8040f79e0..7015144fd 100644
--- a/default-plugins/session-manager/src/main.rs
+++ b/default-plugins/session-manager/src/main.rs
@@ -2,9 +2,9 @@ mod new_session_info;
 mod resurrectable_sessions;
 mod session_list;
 mod ui;
-use zellij_tile::prelude::*;
-
 use std::collections::BTreeMap;
+use uuid::Uuid;
+use zellij_tile::prelude::*;
 
 use new_session_info::NewSessionInfo;
 use ui::{
@@ -45,6 +45,7 @@ struct State {
     colors: Colors,
     is_welcome_screen: bool,
     show_kill_all_sessions_warning: bool,
+    request_ids: Vec<String>,
 }
 
 register_plugin!(State);
@@ -66,6 +67,28 @@ impl ZellijPlugin for State {
         ]);
     }
 
+    fn pipe(&mut self, pipe_message: PipeMessage) -> bool {
+        if pipe_message.name == "filepicker_result" {
+            match (pipe_message.payload, pipe_message.args.get("request_id")) {
+                (Some(payload), Some(request_id)) => {
+                    match self.request_ids.iter().position(|p| p == request_id) {
+                        Some(request_id_position) => {
+                            self.request_ids.remove(request_id_position);
+                            let new_session_folder = std::path::PathBuf::from(payload);
+                            self.new_session_info.new_session_folder = Some(new_session_folder);
+                        },
+                        None => {
+                            eprintln!("request id not found");
+                        },
+                    }
+                },
+                _ => {},
+            }
+            true
+        } else {
+            false
+        }
+    }
     fn update(&mut self, event: Event) -> bool {
         let mut should_render = false;
         match event {
@@ -109,7 +132,7 @@ impl ZellijPlugin for State {
                 render_new_session_block(
                     &self.new_session_info,
                     self.colors,
-                    height,
+                    height.saturating_sub(2),
                     width,
                     x,
                     y + 2,
@@ -184,12 +207,33 @@ impl State {
         } else if let Key::Ctrl('w') = key {
             self.active_screen = ActiveScreen::NewSession;
             should_render = true;
-        } else if let Key::Ctrl('c') = key {
-            self.new_session_info.handle_key(key);
-            should_render = true;
         } else if let Key::BackTab = key {
             self.toggle_active_screen();
             should_render = true;
+        } else if let Key::Ctrl('f') = key {
+            let request_id = Uuid::new_v4();
+            let mut config = BTreeMap::new();
+            let mut args = BTreeMap::new();
+            self.request_ids.push(request_id.to_string());
+            // we insert this into the config so that a new plugin will be opened (the plugin's
+            // uniqueness is determined by its name/url as well as its config)
+            config.insert("request_id".to_owned(), request_id.to_string());
+            // we also insert this into the args so that the plugin will have an easier access to
+            // it
+            args.insert("request_id".to_owned(), request_id.to_string());
+            pipe_message_to_plugin(
+                MessageToPlugin::new("filepicker")
+                    .with_plugin_url("filepicker")
+                    .with_plugin_config(config)
+                    .new_plugin_instance_should_have_pane_title(
+                        "Select folder for the new session...",
+                    )
+                    .with_args(args),
+            );
+            should_render = true;
+        } else if let Key::Ctrl('c') = key {
+            self.new_session_info.new_session_folder = None;
+            should_render = true;
         } else if let Key::Esc = key {
             self.new_session_info.handle_key(key);
             should_render = true;
diff --git a/default-plugins/session-manager/src/new_session_info.rs b/default-plugins/session-manager/src/new_session_info.rs
index 294f4fbc8..02e539668 100644
--- a/default-plugins/session-manager/src/new_session_info.rs
+++ b/default-plugins/session-manager/src/new_session_info.rs
@@ -1,6 +1,7 @@
 use fuzzy_matcher::skim::SkimMatcherV2;
 use fuzzy_matcher::FuzzyMatcher;
 use std::cmp::Ordering;
+use std::path::PathBuf;
 use zellij_tile::prelude::*;
 
 #[derive(Default)]
@@ -8,6 +9,7 @@ pub struct NewSessionInfo {
     name: String,
     layout_list: LayoutList,
     entering_new_session_info: EnteringState,
+    pub new_session_folder: Option<PathBuf>,
 }
 
 #[derive(Eq, PartialEq)]
@@ -104,7 +106,8 @@ impl NewSessionInfo {
                 if new_session_name != current_session_name.as_ref().map(|s| s.as_str()) {
                     match new_session_layout {
                         Some(new_session_layout) => {
-                            switch_session_with_layout(new_session_name, new_session_layout, None)
+                            let cwd = self.new_session_folder.as_ref().map(|c| PathBuf::from(c));
+                            switch_session_with_layout(new_session_name, new_session_layout, cwd)
                         },
                         None => {
                             switch_session(new_session_name);
diff --git a/default-plugins/session-manager/src/ui/components.rs b/default-plugins/session-manager/src/ui/components.rs
index d3c4afe80..d44fddf44 100644
--- a/default-plugins/session-manager/src/ui/components.rs
+++ b/default-plugins/session-manager/src/ui/components.rs
@@ -1,3 +1,4 @@
+use std::path::PathBuf;
 use unicode_width::UnicodeWidthChar;
 use unicode_width::UnicodeWidthStr;
 use zellij_tile::prelude::*;
@@ -519,9 +520,6 @@ pub fn render_screen_toggle(active_screen: ActiveScreen, x: usize, y: usize, max
     let key_indication_len = key_indication_text.chars().count() + 1;
     let first_ribbon_length = new_session_text.chars().count() + 4;
     let second_ribbon_length = running_sessions_text.chars().count() + 4;
-    let third_ribbon_length = exited_sessions_text.chars().count() + 4;
-    let total_len =
-        key_indication_len + first_ribbon_length + second_ribbon_length + third_ribbon_length;
     let key_indication_x = x;
     let first_ribbon_x = key_indication_x + key_indication_len;
     let second_ribbon_x = first_ribbon_x + first_ribbon_length;
@@ -552,6 +550,140 @@ pub fn render_screen_toggle(active_screen: ActiveScreen, x: usize, y: usize, max
     print_ribbon_with_coordinates(exited_sessions_text, third_ribbon_x, y, None, None);
 }
 
+fn render_new_session_folder_prompt(
+    new_session_info: &NewSessionInfo,
+    colors: Colors,
+    x: usize,
+    y: usize,
+    max_cols: usize,
+) {
+    match new_session_info.new_session_folder.as_ref() {
+        Some(new_session_folder) => {
+            let folder_prompt = "New session folder:";
+            let short_folder_prompt = "Folder:";
+            let new_session_path = new_session_folder.clone();
+            let new_session_folder = new_session_folder.display().to_string();
+            let change_folder_shortcut_text = "<Ctrl f>";
+            let change_folder_shortcut = colors.magenta(&change_folder_shortcut_text);
+            let to_change = "to change";
+            let reset_folder_shortcut_text = "<Ctrl c>";
+            let reset_folder_shortcut = colors.magenta(reset_folder_shortcut_text);
+            let to_reset = "to reset";
+            if max_cols
+                >= folder_prompt.width()
+                    + new_session_folder.width()
+                    + change_folder_shortcut_text.width()
+                    + to_change.width()
+                    + reset_folder_shortcut_text.width()
+                    + to_reset.width()
+                    + 8
+            {
+                print!(
+                    "\u{1b}[m{}{} {} ({} {}, {} {})",
+                    format!("\u{1b}[{};{}H", y + 1, x + 1),
+                    colors.green(folder_prompt),
+                    colors.orange(&new_session_folder),
+                    change_folder_shortcut,
+                    to_change,
+                    reset_folder_shortcut,
+                    to_reset,
+                );
+            } else if max_cols
+                >= short_folder_prompt.width()
+                    + new_session_folder.width()
+                    + change_folder_shortcut_text.width()
+                    + to_change.width()
+                    + reset_folder_shortcut_text.width()
+                    + to_reset.width()
+                    + 8
+            {
+                print!(
+                    "\u{1b}[m{}{} {} ({} {}, {} {})",
+                    format!("\u{1b}[{};{}H", y + 1, x + 1),
+                    colors.green(short_folder_prompt),
+                    colors.orange(&new_session_folder),
+                    change_folder_shortcut,
+                    to_change,
+                    reset_folder_shortcut,
+                    to_reset,
+                );
+            } else if max_cols
+                >= short_folder_prompt.width()
+                    + new_session_folder.width()
+                    + change_folder_shortcut_text.width()
+                    + reset_folder_shortcut_text.width()
+                    + 5
+            {
+                print!(
+                    "\u{1b}[m{}{} {} ({}/{})",
+                    format!("\u{1b}[{};{}H", y + 1, x + 1),
+                    colors.green(short_folder_prompt),
+                    colors.orange(&new_session_folder),
+                    change_folder_shortcut,
+                    reset_folder_shortcut,
+                );
+            } else {
+                let total_len = short_folder_prompt.width()
+                    + change_folder_shortcut_text.width()
+                    + reset_folder_shortcut_text.width()
+                    + 5;
+                let max_path_len = max_cols.saturating_sub(total_len);
+                let truncated_path = truncate_path(
+                    new_session_path,
+                    new_session_folder.width().saturating_sub(max_path_len),
+                );
+                print!(
+                    "\u{1b}[m{}{} {} ({}/{})",
+                    format!("\u{1b}[{};{}H", y + 1, x + 1),
+                    colors.green(short_folder_prompt),
+                    colors.orange(&truncated_path),
+                    change_folder_shortcut,
+                    reset_folder_shortcut,
+                );
+            }
+        },
+        None => {
+            let folder_prompt = "New session folder:";
+            let short_folder_prompt = "Folder:";
+            let change_folder_shortcut_text = "<Ctrl f>";
+            let change_folder_shortcut = colors.magenta(change_folder_shortcut_text);
+            let to_set = "to set";
+
+            if max_cols
+                >= folder_prompt.width() + change_folder_shortcut_text.width() + to_set.width() + 4
+            {
+                print!(
+                    "\u{1b}[m{}{} ({} {})",
+                    format!("\u{1b}[{};{}H", y + 1, x + 1),
+                    colors.green(folder_prompt),
+                    change_folder_shortcut,
+                    to_set,
+                );
+            } else if max_cols
+                >= short_folder_prompt.width()
+                    + change_folder_shortcut_text.width()
+                    + to_set.width()
+                    + 4
+            {
+                print!(
+                    "\u{1b}[m{}{} ({} {})",
+                    format!("\u{1b}[{};{}H", y + 1, x + 1),
+                    colors.green(short_folder_prompt),
+                    change_folder_shortcut,
+                    to_set,
+                );
+            } else {
+                print!(
+                    "\u{1b}[m{}{} {}",
+                    format!("\u{1b}[{};{}H", y + 1, x + 1),
+                    colors.green(short_folder_prompt),
+                    change_folder_shortcut,
+                );
+            }
+        },
+    }
+}
+
 pub fn render_new_session_block(
     new_session_info: &NewSessionInfo,
     colors: Colors,
@@ -615,6 +747,7 @@ pub fn render_new_session_block(
         }
         render_layout_selection_list(
             new_session_info,
+            colors,
             max_rows_of_new_session_block.saturating_sub(1),
             max_cols_of_new_session_block,
             x,
@@ -625,6 +758,7 @@ pub fn render_new_session_block(
 
 pub fn render_layout_selection_list(
     new_session_info: &NewSessionInfo,
+    colors: Colors,
     max_rows_of_new_session_block: usize,
     max_cols_of_new_session_block: usize,
     x: usize,
@@ -658,7 +792,7 @@ pub fn render_layout_selection_list(
         let layout_name = layout_info.name();
         let layout_name_len = layout_name.width();
         let is_builtin = layout_info.is_builtin();
-        if i > max_rows_of_new_session_block {
+        if i > max_rows_of_new_session_block.saturating_sub(1) {
             break;
         } else {
             let mut layout_cell = if is_builtin {
@@ -682,7 +816,15 @@ pub fn render_layout_selection_list(
             table = table.add_styled_row(vec![arrow_cell, layout_cell]);
         }
     }
-    print_table_with_coordinates(table, x, y + 3, None, None);
+    let table_y = y + 3;
+    print_table_with_coordinates(table, x, table_y, None, None);
+    render_new_session_folder_prompt(
+        new_session_info,
+        colors,
+        x,
+        (y + max_rows_of_new_session_block).saturating_sub(3),
+        max_cols_of_new_session_block,
+    );
 }
 
 pub fn render_error(error_text: &str, rows: usize, columns: usize, x: usize, y: usize) {
@@ -733,10 +875,6 @@ pub fn render_controls_line(
             }
         },
         ActiveScreen::AttachToSession => {
-            let arrows = colors.magenta("<←↓↑→>");
-            let navigate = colors.bold("Navigate");
-            let enter = colors.magenta("<ENTER>");
-            let select = colors.bold("Attach");
             let rename = colors.magenta("<Ctrl r>");
             let rename_text = colors.bold("Rename");
             let disconnect = colors.magenta("<Ctrl x>");
@@ -817,3 +955,25 @@ impl Colors {
         self.color(&self.palette.magenta, text)
     }
 }
+
+fn truncate_path(path: PathBuf, mut char_count_to_remove: usize) -> String {
+    let mut truncated = String::new();
+    let component_count = path.iter().count();
+    for (i, component) in path.iter().enumerate() {
+        let mut component_str = component.to_string_lossy().to_string();
+        if char_count_to_remove > 0 {
+            truncated.push(component_str.remove(0));
+            if i != 0 && i + 1 != component_count {
+                truncated.push('/');
+            }
+            char_count_to_remove =
+                char_count_to_remove.saturating_sub(component_str.width().saturating_sub(1));
+        } else {
+            truncated.push_str(&component_str);
+            if i != 0 && i + 1 != component_count {
+                truncated.push('/');
+            }
+        }
+    }
+    truncated
+}
diff --git a/default-plugins/strider/.cargo/config.toml b/default-plugins/strider/.cargo/config.toml
index bc255e30b..6b77899cb 100644
--- a/default-plugins/strider/.cargo/config.toml
+++ b/default-plugins/strider/.cargo/config.toml
@@ -1,2 +1,2 @@
 [build]
-target = "wasm32-wasi"
\ No newline at end of file
+target = "wasm32-wasi"
diff --git a/default-plugins/strider/src/file_list_view.rs b/default-plugins/strider/src/file_list_view.rs
new file mode 100644
index 000000000..e16c66b3f
--- /dev/null
+++ b/default-plugins/strider/src/file_list_view.rs
@@ -0,0 +1,191 @@
+use crate::shared::{calculate_list_bounds, render_list_tip};
+use crate::state::{refresh_directory, ROOT};
+use pretty_bytes::converter::convert as pretty_bytes;
+use std::collections::HashMap;
+use std::path::PathBuf;
+use unicode_width::UnicodeWidthStr;
+use zellij_tile::prelude::*;
+
+#[derive(Debug, Clone)]
+pub struct FileListView {
+    pub path: PathBuf,
+    pub path_is_dir: bool,
+    pub files: Vec<FsEntry>,
+    pub cursor_hist: HashMap<PathBuf, usize>,
+}
+
+impl Default for FileListView {
+    fn default() -> Self {
+        FileListView {
+            path_is_dir: true,
+            path: Default::default(),
+            files: Default::default(),
+            cursor_hist: Default::default(),
+        }
+    }
+}
+
+impl FileListView {
+    pub fn descend_to_previous_path(&mut self) {
+        self.path.pop();
+        self.path_is_dir = true;
+        self.files.clear();
+        self.reset_selected();
+        refresh_directory(&self.path);
+    }
+    pub fn descend_to_root_path(&mut self) {
+        self.path.clear();
+        self.path_is_dir = true;