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//! The persistent full-screen UI (`swapdex ui` on a real terminal), ccusage-
//! style by user request: the screen clears, the UI stays up, and everything
//! happens inside it. Switching shows its result in the status line and
//! REFRESHES the list in place; landing in a conversation (resume or new) is
//! the one action that leaves - by design, that is the goal of a switch.
//!
//! No second implementation of anything: a switch/restore runs this same
//! binary as a subprocess (`swapdex use/restore`) with its output captured
//! into the status line, and session/launch data comes from the caller
//! through [`TuiCtx`].
use anyhow::Result;
use ratatui::crossterm::event::{self, Event, KeyCode, KeyEventKind, KeyModifiers};
use ratatui::layout::{Constraint, Layout};
use ratatui::style::{Color, Modifier, Style};
use ratatui::text::{Line, Span};
use ratatui::widgets::{Block, Borders, List, ListItem, ListState, Paragraph};
use std::path::PathBuf;
const VIOLET: Color = Color::Rgb(157, 107, 255); // the brand accent (#9d6bff)
pub struct Row {
pub name: String,
pub ident: String,
pub tools: String,
pub active: bool,
pub warn: Option<&'static str>,
}
/// One line in the post-switch "open" screen (pre-rendered by the caller).
pub struct SessionEntry {
pub line: String,
}
/// Everything the UI needs from the outside world.
pub trait TuiCtx {
fn rows(&mut self) -> Vec<Row>;
/// Perform the switch (subprocess); returns (success, condensed message).
fn switch(&mut self, name: &str) -> (bool, String);
fn restore(&mut self) -> String;
fn delete(&mut self, name: &str) -> String;
/// (label, session entries) for the just-switched profile.
fn sessions(&mut self, name: &str) -> (String, Vec<SessionEntry>);
}
/// What finally leaves the UI. Executed by the caller AFTER the terminal is
/// restored.
pub enum Outcome {
Quit,
/// Open the i-th session from the last `sessions()` call.
OpenSession(usize),
/// Open a fresh conversation in `dir` (None = current directory).
NewConv {
tool: &'static str,
dir: Option<PathBuf>,
},
/// Run the add-a-new-account login flow (needs the real terminal).
AddAccount(&'static str),
}
const NEW_CONV: [(&str, &str); 4] = [
("open a NEW Claude Code conversation", "claude-code"),
("open a NEW Codex conversation", "codex"),
("open a NEW Gemini conversation", "gemini"),
("open a NEW Antigravity conversation", "antigravity"),
];
enum Screen {
Main,
Open {
label: String,
entries: Vec<SessionEntry>,
},
Folder {
tool: &'static str,
input: String,
/// The Open screen to return to on Esc (one step back, not two).
back: (String, Vec<SessionEntry>),
},
ToolPick,
}
/// The persistent loop. Enters the alternate screen once and stays there
/// until an [`Outcome`] leaves it.
pub fn run(ctx: &mut dyn TuiCtx) -> Result<Outcome> {
let mut terminal = ratatui::try_init()?;
let mut rows = ctx.rows();
let mut state = ListState::default();
state.select(Some(rows.iter().position(|r| r.active).unwrap_or(0)));
let mut open_state = ListState::default();
let mut status = String::new();
let mut confirm_delete: Option<usize> = None;
let mut screen = Screen::Main;
let outcome = 'ui: loop {
terminal.draw(|f| {
let [main, foot, help] = Layout::vertical([
Constraint::Min(3),
Constraint::Length(1),
Constraint::Length(1),
])
.areas(f.area());
match &screen {
Screen::Main => {
let items: Vec<ListItem> = rows
.iter()
.map(|r| {
let marker = if r.active { "* " } else { " " };
let name_style = if r.active {
Style::default().fg(VIOLET).add_modifier(Modifier::BOLD)
} else {
Style::default().add_modifier(Modifier::BOLD)
};
let warn =
r.warn.map(|w| format!(" ({w})")).unwrap_or_default();
ListItem::new(vec![
Line::from(vec![
Span::raw(marker),
Span::styled(r.name.clone(), name_style),
Span::raw(" "),
Span::raw(r.ident.clone()),
]),
Line::from(Span::styled(
format!(" {}{warn}", r.tools),
Style::default().fg(Color::DarkGray),
)),
])
})
.collect();
if rows.is_empty() {
// Deleting the last profile lands here - say what to
// do instead of showing an empty box.
f.render_widget(
Paragraph::new("\n No saved profiles.\n\n a - add an account\n q - quit")
.block(Block::default().borders(Borders::ALL).title(Span::styled(
" swapdex ",
Style::default().fg(VIOLET).add_modifier(Modifier::BOLD),
))),
main,
);
} else {
let list = List::new(items)
.block(Block::default().borders(Borders::ALL).title(Span::styled(
" swapdex ",
Style::default().fg(VIOLET).add_modifier(Modifier::BOLD),
)))
.highlight_style(Style::default().add_modifier(Modifier::REVERSED))
.highlight_symbol("> ");
f.render_stateful_widget(list, main, &mut state);
}
let foot_text = if let Some(i) = confirm_delete {
format!(
"delete saved profile '{}'? the live login stays. y/N",
rows[i].name
)
} else {
status.clone()
};
f.render_widget(
Paragraph::new(foot_text).style(Style::default().fg(Color::DarkGray)),
foot,
);
f.render_widget(
Paragraph::new(
"enter switch o open conversation a add account r restore d delete q quit",
)
.style(Style::default().fg(Color::DarkGray)),
help,
);
}
Screen::Open { label, entries } => {
let mut items: Vec<ListItem> = entries
.iter()
.map(|e| ListItem::new(Line::from(e.line.clone())))
.collect();
for (label, _) in NEW_CONV {
items.push(ListItem::new(Line::from(Span::styled(
label,
Style::default().fg(VIOLET),
))));
}
let list = List::new(items)
.block(Block::default().borders(Borders::ALL).title(Span::styled(
format!(" {label} "),
Style::default().fg(VIOLET).add_modifier(Modifier::BOLD),
)))
.highlight_style(Style::default().add_modifier(Modifier::REVERSED))
.highlight_symbol("> ");
f.render_stateful_widget(list, main, &mut open_state);
f.render_widget(
Paragraph::new(status.clone())
.style(Style::default().fg(Color::DarkGray)),
foot,
);
f.render_widget(
Paragraph::new("enter open esc back")
.style(Style::default().fg(Color::DarkGray)),
help,
);
}
Screen::Folder { tool, input, .. } => {
let name = NEW_CONV
.iter()
.find(|(_, t)| t == tool)
.map(|(l, _)| *l)
.unwrap_or("open");
f.render_widget(
Paragraph::new(format!("{name}\n\nfolder [current dir]: {input}_"))
.block(Block::default().borders(Borders::ALL).title(Span::styled(
" which folder? ",
Style::default().fg(VIOLET).add_modifier(Modifier::BOLD),
))),
main,
);
f.render_widget(Paragraph::new(""), foot);
f.render_widget(
Paragraph::new("enter open esc back (empty = current dir, ~ ok)")
.style(Style::default().fg(Color::DarkGray)),
help,
);
}
Screen::ToolPick => {
let items: Vec<ListItem> =
["Claude Code", "Codex", "Gemini CLI", "Antigravity"]
.iter()
.map(|l| ListItem::new(Line::from(*l)))
.collect();
let list = List::new(items)
.block(Block::default().borders(Borders::ALL).title(Span::styled(
" add a new account - which tool? ",
Style::default().fg(VIOLET).add_modifier(Modifier::BOLD),
)))
.highlight_style(Style::default().add_modifier(Modifier::REVERSED))
.highlight_symbol("> ");
f.render_stateful_widget(list, main, &mut open_state);
f.render_widget(Paragraph::new(""), foot);
f.render_widget(
Paragraph::new("enter choose esc back")
.style(Style::default().fg(Color::DarkGray)),
help,
);
}
}
})?;
let Event::Key(key) = event::read()? else {
continue;
};
if key.kind != KeyEventKind::Press {
continue;
}
// Ctrl+C quits from ANY screen - raw mode swallows the signal, and it
// is the first key a user in trouble reaches for.
if key.modifiers.contains(KeyModifiers::CONTROL) && key.code == KeyCode::Char('c') {
break 'ui Outcome::Quit;
}
match &mut screen {
Screen::Main => {
if let Some(i) = confirm_delete {
if matches!(key.code, KeyCode::Char('y') | KeyCode::Char('Y')) {
status = ctx.delete(&rows[i].name);
rows = ctx.rows();
// The list may now be EMPTY - a dangling Some(0)
// would make the next Enter/o index out of bounds.
state.select((!rows.is_empty()).then_some(0));
}
confirm_delete = None;
continue;
}
match key.code {
KeyCode::Char('q') | KeyCode::Esc => break 'ui Outcome::Quit,
KeyCode::Down | KeyCode::Char('j') => {
let i = state.selected().unwrap_or(0);
state.select(Some((i + 1).min(rows.len().saturating_sub(1))));
}
KeyCode::Up | KeyCode::Char('k') => {
let i = state.selected().unwrap_or(0);
state.select(Some(i.saturating_sub(1)));
}
KeyCode::Enter if !rows.is_empty() => {
if let Some(i) = state.selected() {
let name = rows[i].name.clone();
let (ok, msg) = ctx.switch(&name);
status = msg;
rows = ctx.rows();
if ok {
let (label, entries) = ctx.sessions(&name);
open_state.select(Some(0));
screen = Screen::Open { label, entries };
}
}
}
KeyCode::Char('o') if !rows.is_empty() => {
if let Some(i) = state.selected() {
let name = rows[i].name.clone();
let (label, entries) = ctx.sessions(&name);
open_state.select(Some(0));
screen = Screen::Open { label, entries };
}
}
KeyCode::Char('a') => {
open_state.select(Some(0));
screen = Screen::ToolPick;
}
KeyCode::Char('r') => {
status = ctx.restore();
rows = ctx.rows();
}
KeyCode::Char('d') if !rows.is_empty() => {
confirm_delete = state.selected();
}
_ => {}
}
}
Screen::Open { entries, .. } => match key.code {
KeyCode::Esc | KeyCode::Char('q') => {
rows = ctx.rows();
screen = Screen::Main;
}
KeyCode::Down | KeyCode::Char('j') => {
let max = entries.len() + NEW_CONV.len() - 1;
let i = open_state.selected().unwrap_or(0);
open_state.select(Some((i + 1).min(max)));
}
KeyCode::Up | KeyCode::Char('k') => {
let i = open_state.selected().unwrap_or(0);
open_state.select(Some(i.saturating_sub(1)));
}
KeyCode::Enter => {
let i = open_state.selected().unwrap_or(0);
if i < entries.len() {
break 'ui Outcome::OpenSession(i);
}
let tool = NEW_CONV[i - entries.len()].1;
if let Screen::Open { label, entries } = std::mem::replace(
&mut screen,
Screen::Folder {
tool,
input: String::new(),
back: (String::new(), Vec::new()),
},
) {
if let Screen::Folder { back, .. } = &mut screen {
*back = (label, entries);
}
}
}
_ => {}
},
Screen::Folder { tool, input, back } => match key.code {
KeyCode::Esc => {
// One step back to the Open menu, not two.
let (label, entries) = std::mem::take(back);
screen = Screen::Open { label, entries };
}
KeyCode::Backspace => {
input.pop();
}
KeyCode::Enter => {
let dir = if input.is_empty() {
None
} else if input == "~" {
dirs::home_dir()
} else if let Some(rest) = input.strip_prefix("~/") {
dirs::home_dir().map(|h| h.join(rest))
} else {
Some(PathBuf::from(input.clone()))
};
if let Some(d) = &dir {
if !d.is_dir() {
status = format!("not a directory: {}", d.display());
input.clear();
continue;
}
}
break 'ui Outcome::NewConv { tool, dir };
}
KeyCode::Char(c) => input.push(c),
_ => {}
},
Screen::ToolPick => match key.code {
KeyCode::Esc | KeyCode::Char('q') => screen = Screen::Main,
KeyCode::Down | KeyCode::Char('j') => {
let i = open_state.selected().unwrap_or(0);
open_state.select(Some((i + 1).min(3)));
}
KeyCode::Up | KeyCode::Char('k') => {
let i = open_state.selected().unwrap_or(0);
open_state.select(Some(i.saturating_sub(1)));
}
KeyCode::Enter => {
let tool = ["claude-code", "codex", "gemini", "antigravity"]
[open_state.selected().unwrap_or(0)];
break 'ui Outcome::AddAccount(tool);
}
_ => {}
},
}
};
ratatui::restore();
Ok(outcome)
}