kraal 0.1.0

A terminal workspace manager for SSH fleets and coding agents
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

//! Panes from the command line: run, preview, send input, read, wait, follow events.

use std::path::PathBuf;

use anyhow::{Result, bail};

use super::args::{PlaceArgs, RunArgs};
use super::{Session, pane_ref};
use crate::protocol::{PaneInfo, Request, Response};
use crate::{client, paths, server};

/// `kraal panes` and `kraal agents`.
pub(super) fn list(s: &Session, json: bool, agents: bool) -> Result<()> {
    let Response::Panes(list) = s.request(Request::ListPanes)? else { bail!("unexpected answer") };
    let list: Vec<PaneInfo> = list.into_iter().filter(|p| !agents || p.agent.is_some()).collect();
    print_panes(&list, json, agents)
}

fn print_panes(list: &[PaneInfo], json: bool, agents: bool) -> Result<()> {
    if json {
        println!("{}", serde_json::to_string_pretty(list)?);
        return Ok(());
    }
    for p in list {
        let name = p.name.clone().unwrap_or_else(|| {
            if p.title.is_empty() {
                p.command.first().cloned().unwrap_or_else(|| "shell".into())
            } else {
                p.title.clone()
            }
        });
        let mark = if p.focused { "*" } else { " " };
        let extra = match (&p.agent, p.exit_code) {
            _ if p.suspended => "not started (enter runs it)".to_string(),
            (_, Some(code)) => format!("exited {code}"),
            (Some(a), _) => format!("{} {a} {}", p.state.icon(), p.state.label()),
            (None, _) => p.cwd.as_ref().map(|c| paths::shorten_home(c)).unwrap_or_default(),
        };
        let extra = if p.production.is_some() { format!("PROD {extra}") } else { extra };
        if agents {
            println!("{:>4}{mark} {:<14} {:<24} {extra}", p.id, p.workspace, name);
        } else {
            println!("{:>4}{mark} {:<14} {:<12} {:<24} {extra}", p.id, p.workspace, p.tab, name);
        }
    }
    Ok(())
}

pub(super) fn run(s: &Session, args: RunArgs) -> Result<()> {
    let cwd = args.cwd.map(std::path::absolute).transpose()?.or_else(|| std::env::current_dir().ok());
    let r = s.request(Request::NewPane {
        target: args.place.target.clone().or_else(|| s.own_pane()),
        command: args.command,
        cwd,
        name: args.place.name.clone(),
        placement: args.place.placement(),
        preview: None,
        focus: !args.place.no_focus,
        close_on_exit: args.close_on_exit,
    })?;
    if let Response::Pane(p) = r {
        println!("{}", p.id);
    }
    Ok(())
}

pub(super) fn preview(s: &Session, path: PathBuf, place: PlaceArgs) -> Result<()> {
    let path = std::path::absolute(&path)?;
    if !path.exists() {
        bail!("{} does not exist", path.display());
    }
    let r = s.request(Request::NewPane {
        target: place.target.clone().or_else(|| s.own_pane()),
        command: Vec::new(),
        cwd: path.parent().map(PathBuf::from),
        name: place.name.clone(),
        placement: place.placement(),
        preview: Some(path),
        focus: !place.no_focus,
        close_on_exit: false,
    })?;
    if let Response::Pane(p) = r {
        println!("{}", p.id);
    }
    Ok(())
}

pub(super) fn send(s: &Session, pane: Option<String>, enter: bool, production: bool, text: Vec<String>) -> Result<()> {
    let mut t = text.join(" ");
    if enter {
        t.push('\r');
    }
    s.request(Request::SendText { pane: pane_ref(s, pane)?, text: t, production })?;
    Ok(())
}

pub(super) fn read(s: &Session, pane: Option<String>, lines: Option<usize>) -> Result<()> {
    if let Response::Text(t) = s.request(Request::ReadPane { pane: pane_ref(s, pane)?, lines })? {
        print!("{t}");
    }
    Ok(())
}

pub(super) fn wait(s: &Session, pane: Option<String>, until: Vec<String>, timeout: Option<f64>) -> Result<()> {
    let timeout_ms = timeout.map(|t| (t * 1000.0) as u64);
    if let Response::Pane(p) = s.request(Request::Wait { pane: pane_ref(s, pane)?, until, timeout_ms })? {
        println!("{}", p.state.label());
    }
    Ok(())
}

/// `kraal events`: one JSON line per event, as they happen (or replayed from `since`).
pub(super) fn events(s: &Session, types: Vec<String>, list: bool, since: Option<u64>, boot: Option<u64>) -> Result<()> {
    if list {
        for t in server::events::TYPES {
            println!("{t}");
        }
        return Ok(());
    }
    client::subscribe(
        &s.socket(),
        types,
        since.map(|since| (since, boot)),
        || {},
        |event| {
            use std::io::Write;
            let mut out = std::io::stdout().lock();
            writeln!(out, "{event}").and_then(|_| out.flush()).is_ok()
        },
    )
}