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//! Send-mail compose modal — multi-line vim-style editor + CLI send.
//!
//! Two abstractions live here, mirroring the PR-UI-4 approvals
//! split:
//!
//! - `Editor` — pure-state vim-style multi-line buffer. `apply_key`
//! takes a `KeyEvent` and returns an `EditorAction` so the
//! surrounding App can react to commands like "send" / "cancel"
//! without the editor itself knowing about the message bus.
//! - `MessageSender` — write side. `CliMessageSender` shells out to
//! `teamctl send <agent> "<body>"` (DM) or
//! `teamctl broadcast #<channel> "<body>"` (broadcast), the same
//! architectural discipline as PR-UI-4's `CliApprovalDecider`. A
//! direct `INSERT INTO messages …` from the UI would silently
//! sidestep the channel-ACL + ratelimit + delivery hooks the CLI
//! already runs through.
//!
//! Vim keybindings shipped in PR-UI-5: insert mode (`i`/`a`/`o`,
//! Esc back to Normal), Normal motions (`h`/`j`/`k`/`l`, arrows,
//! `0`/`$`), ex command shim (`:w`/`:q`/`:wq`), Ctrl+Enter to send,
//! Esc-Esc to cancel. Word motions (`w`/`b`) and line ops
//! (`dd`/`yy`/`p`) deferred to the PR-UI-7 polish cycle — flagged
//! in the PR description.
use std::path::Path;
use std::process::Command;
use anyhow::{Context, Result};
use crossterm::event::{KeyCode, KeyEvent, KeyEventKind, KeyModifiers};
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum ComposeTarget {
/// DM to a specific agent. `agent_id` is `<project>:<agent>`.
Dm {
agent_id: String,
project_id: String,
},
/// Broadcast to a channel. `channel_id` is `<project>:<name>`,
/// rendered as `#<name>` in the modal title.
Broadcast {
channel_id: String,
project_id: String,
},
}
impl ComposeTarget {
/// Header text for the compose-modal title bar. DM targets render
/// the agent's `display_name` when set (T-160 fallback) so the
/// operator sees the same human label that surfaces in the roster
/// and mailbox; broadcast targets render `#<channel-name>`
/// unchanged. Pass `&app.team` so the agent lookup goes through
/// the existing TeamSnapshot rather than carving a second context
/// path.
pub fn title(&self, team: &crate::data::TeamSnapshot) -> String {
match self {
ComposeTarget::Dm { agent_id, .. } => {
let label = crate::data::agent_label(team, agent_id);
format!("→ {label}")
}
ComposeTarget::Broadcast { channel_id, .. } => {
let short = channel_id
.rsplit_once(':')
.map(|(_, n)| n)
.unwrap_or(channel_id);
format!("→ #{short}")
}
}
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum VimMode {
Normal,
Insert,
/// Awaiting an ex-command after `:`. `ex_buffer` accumulates
/// the typed string; Enter dispatches it.
Ex,
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Editor {
pub lines: Vec<String>,
pub cursor_row: usize,
pub cursor_col: usize,
pub mode: VimMode,
pub ex_buffer: String,
/// Tracks whether the previous keypress was `Esc`. Two Escs in
/// a row from any mode cancel the surrounding modal — same
/// shape SPEC §4 specifies for "close all modals."
pub esc_armed: bool,
/// Single-register yank buffer for `yy` / `dd` → `p`. Only
/// holds full lines; word-level yanks aren't in PR-UI-7 scope.
/// Empty `Vec` means "nothing to paste."
pub yank: Vec<String>,
/// Tracks whether the previous Normal-mode key was `d` or `y`.
/// `dd` deletes the line, `yy` yanks it. The pending-op state
/// clears on any non-matching key so `dx` doesn't leave the
/// editor in a half-operation.
pub pending_op: Option<char>,
}
impl Default for Editor {
fn default() -> Self {
Self {
lines: vec![String::new()],
cursor_row: 0,
cursor_col: 0,
// Compose modals open in Insert because typing is the
// central UX — operators expect their first keystroke
// to land in the buffer.
mode: VimMode::Insert,
ex_buffer: String::new(),
esc_armed: false,
yank: Vec::new(),
pending_op: None,
}
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum EditorAction {
/// Keep the modal open; editor consumed the key.
Continue,
/// Operator hit `Ctrl+Enter` or `:wq` — send + close.
Send,
/// Operator hit Esc-Esc or `:q` — close without send.
Cancel,
}
impl Editor {
/// Final body for sending. Joins lines with `\n`; trailing
/// blank lines are stripped so a single newline at the bottom
/// doesn't sneak past the operator's intent.
pub fn body(&self) -> String {
let mut out = self.lines.join("\n");
while out.ends_with('\n') {
out.pop();
}
out
}
pub fn is_empty(&self) -> bool {
self.lines.iter().all(|l| l.is_empty())
}
/// Apply a keypress and return what the surrounding modal
/// should do. Held under `&mut self` so tests can drive the
/// editor deterministically without a `Terminal`.
pub fn apply_key(&mut self, k: KeyEvent) -> EditorAction {
if k.kind != KeyEventKind::Press {
return EditorAction::Continue;
}
// Send chord — Alt+Enter is the terminal-universal send
// (xterm / Terminal.app / tmux deliver it as Enter+ALT in
// their default modes). Ctrl+Enter is kept for terminals
// running the kitty keyboard protocol or modifyOtherKeys,
// where it does decode distinctly. Either chord fires send
// from any editor mode.
if k.code == KeyCode::Enter
&& (k.modifiers.contains(KeyModifiers::ALT)
|| k.modifiers.contains(KeyModifiers::CONTROL))
{
return EditorAction::Send;
}
// Esc-Esc handling spans modes: a single Esc out of Insert
// / Ex arms the second-Esc; from Normal the first Esc is
// the arming press. Any non-Esc key clears the arm.
if k.code == KeyCode::Esc {
return self.handle_esc();
}
self.esc_armed = false;
match self.mode {
VimMode::Insert => self.apply_insert(k),
VimMode::Normal => self.apply_normal(k),
VimMode::Ex => self.apply_ex(k),
}
}
fn handle_esc(&mut self) -> EditorAction {
// Two Escs in a row → cancel the modal regardless of mode.
if self.esc_armed {
return EditorAction::Cancel;
}
self.esc_armed = true;
match self.mode {
VimMode::Insert | VimMode::Ex => {
self.mode = VimMode::Normal;
self.ex_buffer.clear();
}
VimMode::Normal => {
// Already Normal — Esc just arms the second-Esc.
}
}
EditorAction::Continue
}
fn apply_insert(&mut self, k: KeyEvent) -> EditorAction {
match k.code {
KeyCode::Char(c) => {
let line = &mut self.lines[self.cursor_row];
let col = self.cursor_col.min(line.len());
line.insert(col, c);
self.cursor_col = col + 1;
}
KeyCode::Enter => {
let line = &mut self.lines[self.cursor_row];
let col = self.cursor_col.min(line.len());
let tail = line.split_off(col);
self.cursor_row += 1;
self.lines.insert(self.cursor_row, tail);
self.cursor_col = 0;
}
KeyCode::Backspace => {
if self.cursor_col > 0 {
let line = &mut self.lines[self.cursor_row];
let col = self.cursor_col.min(line.len());
line.remove(col - 1);
self.cursor_col = col - 1;
} else if self.cursor_row > 0 {
let removed = self.lines.remove(self.cursor_row);
self.cursor_row -= 1;
let prev_len = self.lines[self.cursor_row].len();
self.lines[self.cursor_row].push_str(&removed);
self.cursor_col = prev_len;
}
}
KeyCode::Left => self.move_left(),
KeyCode::Right => self.move_right(),
KeyCode::Up => self.move_up(),
KeyCode::Down => self.move_down(),
_ => {}
}
EditorAction::Continue
}
fn apply_normal(&mut self, k: KeyEvent) -> EditorAction {
// Pending-op (dd/yy) machine: when the previous press was
// `d` or `y`, the next key either completes the op
// (`d`/`y`) or aborts it. Any non-d/y/p key clears the
// pending-op so we don't leave the editor stuck.
if let Some(op) = self.pending_op {
self.pending_op = None;
match (op, k.code) {
('d', KeyCode::Char('d')) => {
self.delete_line();
return EditorAction::Continue;
}
('y', KeyCode::Char('y')) => {
self.yank_line();
return EditorAction::Continue;
}
_ => {} // fall through and re-dispatch the key
}
}
match k.code {
KeyCode::Char('i') => self.mode = VimMode::Insert,
KeyCode::Char('a') => {
self.move_right_or_eol();
self.mode = VimMode::Insert;
}
KeyCode::Char('o') => {
self.cursor_row += 1;
self.lines.insert(self.cursor_row, String::new());
self.cursor_col = 0;
self.mode = VimMode::Insert;
}
KeyCode::Char('h') | KeyCode::Left => self.move_left(),
KeyCode::Char('l') | KeyCode::Right => self.move_right(),
KeyCode::Char('j') | KeyCode::Down => self.move_down(),
KeyCode::Char('k') | KeyCode::Up => self.move_up(),
KeyCode::Char('0') => self.cursor_col = 0,
KeyCode::Char('$') => {
self.cursor_col = self.lines[self.cursor_row].len();
}
KeyCode::Char(':') => {
self.mode = VimMode::Ex;
self.ex_buffer.clear();
}
// PR-UI-7 word motions — `w` next word, `b` prev
// word, `e` end of word. ASCII-word semantics
// (alphanumeric + `_`); good enough for prose +
// single-line code we'd compose into mailbox messages.
KeyCode::Char('w') => self.move_word_forward(),
KeyCode::Char('b') => self.move_word_back(),
KeyCode::Char('e') => self.move_word_end(),
// PR-UI-7 line ops — first press arms the op, second
// press completes. `p` pastes the yank register
// below the current line.
KeyCode::Char('d') => self.pending_op = Some('d'),
KeyCode::Char('y') => self.pending_op = Some('y'),
KeyCode::Char('p') => self.paste_below(),
_ => {}
}
EditorAction::Continue
}
fn apply_ex(&mut self, k: KeyEvent) -> EditorAction {
match k.code {
KeyCode::Char(c) => {
self.ex_buffer.push(c);
EditorAction::Continue
}
KeyCode::Backspace => {
self.ex_buffer.pop();
EditorAction::Continue
}
KeyCode::Enter => {
let cmd = std::mem::take(&mut self.ex_buffer);
self.mode = VimMode::Normal;
match cmd.trim() {
"wq" | "x" => EditorAction::Send,
"q" | "q!" => EditorAction::Cancel,
"w" => EditorAction::Continue,
_ => EditorAction::Continue,
}
}
_ => EditorAction::Continue,
}
}
fn move_left(&mut self) {
if self.cursor_col > 0 {
self.cursor_col -= 1;
}
}
fn move_right(&mut self) {
let len = self.lines[self.cursor_row].len();
if self.cursor_col < len {
self.cursor_col += 1;
}
}
fn move_right_or_eol(&mut self) {
// `a` in vim moves one past the cursor, clamped at EOL.
let len = self.lines[self.cursor_row].len();
self.cursor_col = (self.cursor_col + 1).min(len);
}
fn move_word_forward(&mut self) {
let line = self.lines[self.cursor_row].as_bytes();
let mut i = self.cursor_col;
// Skip current word.
while i < line.len() && is_word_byte(line[i]) {
i += 1;
}
// Skip whitespace / non-word.
while i < line.len() && !is_word_byte(line[i]) {
i += 1;
}
if i == self.cursor_col && self.cursor_row + 1 < self.lines.len() {
// At EOL with no further word — advance to next line's start.
self.cursor_row += 1;
self.cursor_col = 0;
} else {
self.cursor_col = i;
}
}
fn move_word_back(&mut self) {
if self.cursor_col == 0 {
if self.cursor_row > 0 {
self.cursor_row -= 1;
self.cursor_col = self.lines[self.cursor_row].len();
}
return;
}
let line = self.lines[self.cursor_row].as_bytes();
let mut i = self.cursor_col;
// Step back over whitespace.
while i > 0 && !is_word_byte(line[i - 1]) {
i -= 1;
}
// Step back to start of word.
while i > 0 && is_word_byte(line[i - 1]) {
i -= 1;
}
self.cursor_col = i;
}
fn move_word_end(&mut self) {
let line = self.lines[self.cursor_row].as_bytes();
let mut i = self.cursor_col;
// If currently in a word, move to its end; if not, find
// the next word and move to its end.
if i < line.len() && !is_word_byte(line[i]) {
while i < line.len() && !is_word_byte(line[i]) {
i += 1;
}
} else if i < line.len()
&& is_word_byte(line[i])
&& (i + 1 >= line.len() || !is_word_byte(line[i + 1]))
{
// Already at EOW — skip past this word's terminator
// and find the next word's end.
i += 1;
while i < line.len() && !is_word_byte(line[i]) {
i += 1;
}
}
while i + 1 < line.len() && is_word_byte(line[i + 1]) {
i += 1;
}
if i < line.len() {
self.cursor_col = i;
}
}
fn delete_line(&mut self) {
if self.lines.is_empty() {
return;
}
let removed = self.lines.remove(self.cursor_row);
self.yank = vec![removed];
if self.lines.is_empty() {
self.lines.push(String::new());
}
if self.cursor_row >= self.lines.len() {
self.cursor_row = self.lines.len() - 1;
}
self.cursor_col = self.cursor_col.min(self.lines[self.cursor_row].len());
}
fn yank_line(&mut self) {
if let Some(line) = self.lines.get(self.cursor_row) {
self.yank = vec![line.clone()];
}
}
fn paste_below(&mut self) {
if self.yank.is_empty() {
return;
}
let yanked = self.yank.clone();
for (offset, line) in yanked.into_iter().enumerate() {
self.lines.insert(self.cursor_row + 1 + offset, line);
}
self.cursor_row += 1;
self.cursor_col = 0;
}
fn move_up(&mut self) {
if self.cursor_row > 0 {
self.cursor_row -= 1;
self.cursor_col = self.cursor_col.min(self.lines[self.cursor_row].len());
}
}
fn move_down(&mut self) {
if self.cursor_row + 1 < self.lines.len() {
self.cursor_row += 1;
self.cursor_col = self.cursor_col.min(self.lines[self.cursor_row].len());
}
}
}
/// ASCII word-boundary classifier — alphanumeric + `_` is a word
/// byte, everything else is whitespace / punctuation. Used by the
/// vim word-motion `w` / `b` / `e` keys.
fn is_word_byte(b: u8) -> bool {
b.is_ascii_alphanumeric() || b == b'_'
}
pub trait MessageSender: Send + Sync {
fn send_dm(&self, root: &Path, agent_id: &str, body: &str) -> Result<()>;
fn broadcast(&self, root: &Path, channel_id: &str, body: &str) -> Result<()>;
}
#[derive(Debug, Default, Clone, Copy)]
pub struct CliMessageSender;
impl MessageSender for CliMessageSender {
fn send_dm(&self, root: &Path, agent_id: &str, body: &str) -> Result<()> {
let status = Command::new("teamctl")
.arg("--root")
.arg(root)
.args(["send", agent_id, body])
.status()
.with_context(|| format!("invoke teamctl send {agent_id}"))?;
if !status.success() {
anyhow::bail!("teamctl send {agent_id} exited {status}");
}
Ok(())
}
fn broadcast(&self, root: &Path, channel_id: &str, body: &str) -> Result<()> {
// `teamctl broadcast` takes a `#<name>` argument scoped to
// the project's compose root. We pass the short name (after
// the last `:`); the CLI resolves to the project's channel.
let short = channel_id
.rsplit_once(':')
.map(|(_, n)| n)
.unwrap_or(channel_id);
let target = format!("#{short}");
let status = Command::new("teamctl")
.arg("--root")
.arg(root)
.args(["broadcast", &target, body])
.status()
.with_context(|| format!("invoke teamctl broadcast {target}"))?;
if !status.success() {
anyhow::bail!("teamctl broadcast {target} exited {status}");
}
Ok(())
}
}
pub mod test_support {
use super::*;
use std::sync::Mutex;
#[derive(Default)]
pub struct MockMessageSender {
pub dm_calls: Mutex<Vec<(String, String)>>,
pub broadcast_calls: Mutex<Vec<(String, String)>>,
/// When set, the next call returns an error of this text.
/// Reset after firing so subsequent calls succeed (the
/// modal's error-then-success path is a real flow).
pub fail_next: Mutex<Option<String>>,
}
impl MessageSender for MockMessageSender {
fn send_dm(&self, _root: &Path, agent_id: &str, body: &str) -> Result<()> {
if let Some(err) = self.fail_next.lock().unwrap().take() {
anyhow::bail!(err);
}
self.dm_calls
.lock()
.unwrap()
.push((agent_id.into(), body.into()));
Ok(())
}
fn broadcast(&self, _root: &Path, channel_id: &str, body: &str) -> Result<()> {
if let Some(err) = self.fail_next.lock().unwrap().take() {
anyhow::bail!(err);
}
self.broadcast_calls
.lock()
.unwrap()
.push((channel_id.into(), body.into()));
Ok(())
}
}
}
#[cfg(test)]
mod tests {
use super::*;
fn k(code: KeyCode) -> KeyEvent {
KeyEvent::new(code, KeyModifiers::NONE)
}
fn k_ctrl(code: KeyCode) -> KeyEvent {
KeyEvent::new(code, KeyModifiers::CONTROL)
}
fn empty_team() -> crate::data::TeamSnapshot {
crate::data::TeamSnapshot::empty(std::path::PathBuf::from("/tmp"))
}
#[test]
fn dm_target_title_renders_as_arrow_agent() {
let team = empty_team();
let t = ComposeTarget::Dm {
agent_id: "writing:dev1".into(),
project_id: "writing".into(),
};
// Empty team → no display_name override; falls through to the
// canonical id.
assert_eq!(t.title(&team), "→ writing:dev1");
}
#[test]
fn dm_target_title_uses_display_name_when_set() {
// T-160: DM modal title swaps in `display_name` when the
// target agent has one in the team snapshot.
use crate::data::{AgentInfo, TeamSnapshot};
use team_core::supervisor::AgentState;
let agent = AgentInfo {
id: "writing:dev1".into(),
agent: "dev1".into(),
project: "writing".into(),
tmux_session: "a-writing-dev1".into(),
state: AgentState::Unknown,
unread_mail: 0,
pending_approvals: 0,
is_manager: false,
display_name: Some("Dev 1 (Drafter)".into()),
};
let team = TeamSnapshot {
root: std::path::PathBuf::from("/tmp"),
team_name: "t".into(),
agents: vec![agent],
channels: vec![],
};
let t = ComposeTarget::Dm {
agent_id: "writing:dev1".into(),
project_id: "writing".into(),
};
assert_eq!(t.title(&team), "→ Dev 1 (Drafter)");
}
#[test]
fn broadcast_target_title_strips_project_prefix() {
let team = empty_team();
let t = ComposeTarget::Broadcast {
channel_id: "writing:editorial".into(),
project_id: "writing".into(),
};
assert_eq!(t.title(&team), "→ #editorial");
}
#[test]
fn editor_starts_in_insert_mode() {
let e = Editor::default();
assert_eq!(e.mode, VimMode::Insert);
assert!(e.is_empty());
}
#[test]
fn typing_chars_appends_to_line() {
let mut e = Editor::default();
for c in "hello".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
assert_eq!(e.lines, vec!["hello"]);
assert_eq!(e.cursor_col, 5);
assert_eq!(e.body(), "hello");
}
#[test]
fn enter_splits_line() {
let mut e = Editor::default();
for c in "hi".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
e.apply_key(k(KeyCode::Enter));
for c in "yo".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
assert_eq!(e.lines, vec!["hi", "yo"]);
assert_eq!(e.body(), "hi\nyo");
}
#[test]
fn backspace_at_line_start_joins_with_previous() {
let mut e = Editor::default();
for c in "ab".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
e.apply_key(k(KeyCode::Enter));
for c in "cd".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
// Cursor at start of line 2 → Backspace joins.
e.cursor_col = 0;
e.apply_key(k(KeyCode::Backspace));
assert_eq!(e.lines, vec!["abcd"]);
assert_eq!(e.cursor_row, 0);
assert_eq!(e.cursor_col, 2);
}
#[test]
fn esc_from_insert_drops_to_normal() {
let mut e = Editor::default();
e.apply_key(k(KeyCode::Esc));
assert_eq!(e.mode, VimMode::Normal);
assert!(e.esc_armed);
}
#[test]
fn second_esc_cancels_from_any_mode() {
let mut e = Editor::default();
// From Insert: first Esc → Normal+armed; second Esc → Cancel.
e.apply_key(k(KeyCode::Esc));
assert_eq!(e.apply_key(k(KeyCode::Esc)), EditorAction::Cancel);
// From Normal: first Esc arms; second Esc cancels.
let mut e = Editor {
mode: VimMode::Normal,
..Editor::default()
};
assert_eq!(e.apply_key(k(KeyCode::Esc)), EditorAction::Continue);
assert_eq!(e.apply_key(k(KeyCode::Esc)), EditorAction::Cancel);
}
#[test]
fn ctrl_enter_sends_from_any_mode() {
let mut e = Editor::default();
for c in "hi".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
assert_eq!(e.apply_key(k_ctrl(KeyCode::Enter)), EditorAction::Send);
}
#[test]
fn ex_wq_sends() {
let mut e = Editor::default();
for c in "hi".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
// Esc → Normal, then `:wq` → Send.
e.apply_key(k(KeyCode::Esc));
e.apply_key(k(KeyCode::Char(':')));
for c in "wq".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
assert_eq!(e.apply_key(k(KeyCode::Enter)), EditorAction::Send);
}
#[test]
fn ex_q_cancels() {
let mut e = Editor::default();
e.apply_key(k(KeyCode::Esc));
e.apply_key(k(KeyCode::Char(':')));
e.apply_key(k(KeyCode::Char('q')));
assert_eq!(e.apply_key(k(KeyCode::Enter)), EditorAction::Cancel);
}
#[test]
fn normal_i_re_enters_insert() {
let mut e = Editor::default();
e.apply_key(k(KeyCode::Esc));
// Non-Esc key clears the arm.
e.apply_key(k(KeyCode::Char('i')));
assert_eq!(e.mode, VimMode::Insert);
assert!(!e.esc_armed);
}
#[test]
fn hjkl_navigate_in_normal_mode() {
let mut e = Editor::default();
for c in "abc".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
e.apply_key(k(KeyCode::Esc));
e.apply_key(k(KeyCode::Char('0')));
assert_eq!(e.cursor_col, 0);
e.apply_key(k(KeyCode::Char('l')));
e.apply_key(k(KeyCode::Char('l')));
assert_eq!(e.cursor_col, 2);
e.apply_key(k(KeyCode::Char('h')));
assert_eq!(e.cursor_col, 1);
}
#[test]
fn body_strips_trailing_blank_lines() {
let mut e = Editor::default();
for c in "x".chars() {
e.apply_key(k(KeyCode::Char(c)));
}
e.apply_key(k(KeyCode::Enter));
e.apply_key(k(KeyCode::Enter));
// body is `x\n\n` — strip both trailing newlines.
assert_eq!(e.body(), "x");
}
}