swapdex 0.1.6

Switch between multiple Claude Code and Codex login accounts, locally and safely.
Documentation
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//! End-to-end switch behavior against an isolated SWAPDEX_ROOT. Never touches a
//! real login: every path resolves under the temp root.

use std::path::Path;
use std::process::Command;

fn bin() -> &'static str {
    env!("CARGO_BIN_EXE_swapdex")
}

fn run(root: &Path, args: &[&str]) -> (String, String, i32) {
    let out = Command::new(bin())
        .args(args)
        .env("SWAPDEX_ROOT", root)
        .output()
        .unwrap();
    (
        String::from_utf8_lossy(&out.stdout).into_owned(),
        String::from_utf8_lossy(&out.stderr).into_owned(),
        out.status.code().unwrap_or(-1),
    )
}

fn seed_codex(root: &Path, account_id: &str) {
    let d = root.join(".codex");
    std::fs::create_dir_all(&d).unwrap();
    std::fs::write(
        d.join("auth.json"),
        serde_json::to_vec(&serde_json::json!({
            "auth_mode":"chatgpt","OPENAI_API_KEY":"sk-SENTINEL",
            "tokens":{"id_token":"h.eyJlbWFpbCI6ImFAeC5jb20ifQ.s","access_token":"AT",
                      "refresh_token":"RT","account_id":account_id},
            "last_refresh":"2026-07-03T00:00:00Z"}))
        .unwrap(),
    )
    .unwrap();
}

#[test]
fn add_use_roundtrip_and_egress_sentinel() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    let (_o, e, c) = run(root.path(), &["add", "work", "--tool", "codex"]);
    assert_eq!(c, 0, "add failed: {e}");

    seed_codex(root.path(), "acct-B"); // a different live login
    run(root.path(), &["add", "home", "--tool", "codex"]);

    let (_o, e, c) = run(root.path(), &["use", "work", "--tool", "codex"]);
    assert_eq!(c, 0, "use failed: {e}");
    let live: serde_json::Value =
        serde_json::from_slice(&std::fs::read(root.path().join(".codex/auth.json")).unwrap())
            .unwrap();
    assert_eq!(
        live["tokens"]["account_id"], "acct-A",
        "live login is now work"
    );

    // EGRESS (A11): no command prints the sentinel token to stdout/stderr.
    for args in [vec!["ls"], vec!["status"], vec!["ls", "--json"]] {
        let (o, e, _c) = run(root.path(), &args);
        assert!(
            !o.contains("SENTINEL") && !e.contains("SENTINEL"),
            "token leak in {args:?}: {o}{e}"
        );
    }
}

#[test]
fn status_trusts_live_identity_not_stale_active_json() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    run(root.path(), &["add", "work", "--tool", "codex"]);
    run(root.path(), &["use", "work", "--tool", "codex"]);
    // The user "logs in directly" to a different account behind swapdex's back.
    seed_codex(root.path(), "acct-Z");
    let (o, _e, _c) = run(root.path(), &["status"]);
    // active.json still says "work", but status must reflect the LIVE account,
    // which is now unsaved.
    assert!(
        o.contains("not saved"),
        "status must reconcile against the live login: {o}"
    );
}

#[test]
fn use_nonexistent_profile_exits_nonzero() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    let (_o, _e, c) = run(root.path(), &["use", "ghost", "--tool", "codex"]);
    assert_ne!(c, 0);
}

#[test]
fn ls_empty_store_guides_onboarding() {
    let root = tempfile::tempdir().unwrap();
    let (o, _e, c) = run(root.path(), &["ls"]);
    assert_eq!(c, 0);
    assert!(o.contains("No accounts saved"));
    assert!(
        o.contains("swapdex setup"),
        "empty state should point to setup: {o}"
    );
}

// setup is interactive; piped (non-tty) it degrades instead of hanging.
#[test]
fn setup_non_tty_degrades_gracefully() {
    let root = tempfile::tempdir().unwrap();
    let out = std::process::Command::new(bin())
        .arg("setup")
        .env("SWAPDEX_ROOT", root.path())
        .stdin(std::process::Stdio::null())
        .output()
        .unwrap();
    assert!(
        String::from_utf8_lossy(&out.stderr).contains("interactive"),
        "setup should explain it needs a terminal"
    );
}

// Drive the interactive setup wizard over a pipe (SWAPDEX_ASSUME_TTY bypasses
// the tty check). Answers are one per line.
fn run_setup(root: &Path, input: &str) -> (String, i32) {
    use std::io::Write;
    use std::process::Stdio;
    let mut child = Command::new(bin())
        .arg("setup")
        .env("SWAPDEX_ROOT", root)
        .env("SWAPDEX_ASSUME_TTY", "1")
        .stdin(Stdio::piped())
        .stdout(Stdio::piped())
        .stderr(Stdio::piped())
        .spawn()
        .unwrap();
    child
        .stdin
        .as_mut()
        .unwrap()
        .write_all(input.as_bytes())
        .unwrap();
    let out = child.wait_with_output().unwrap();
    (
        String::from_utf8_lossy(&out.stdout).into_owned(),
        out.status.code().unwrap_or(-1),
    )
}

// The wizard saves the current login from a typed name.
#[test]
fn setup_wizard_saves_account_from_prompts() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    let (o, c) = run_setup(root.path(), "mycodex\nn\n");
    assert_eq!(c, 0, "{o}");
    let (ls, _e, _c) = run(root.path(), &["ls"]);
    assert!(
        ls.contains("mycodex"),
        "setup should save the account: {ls}"
    );
}

// The wizard re-prompts on an invalid name instead of skipping it.
#[test]
fn setup_reprompts_on_an_invalid_name() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    let (o, c) = run_setup(root.path(), "bad/name\ngood\nn\n");
    assert_eq!(c, 0);
    assert!(
        o.contains("can't be a name"),
        "should reject the invalid name: {o}"
    );
    let (ls, _e, _c) = run(root.path(), &["ls"]);
    assert!(ls.contains("good"), "should save the valid retry: {ls}");
}

// login --tool claude: with Claude already logged in (or its CLI absent) it
// guides the `swapdex add` step rather than spawning an interactive session.
#[test]
fn login_claude_guides_the_add_step() {
    let root = tempfile::tempdir().unwrap();
    // Seed a live Claude login so the "already logged in" guidance path runs and
    // it never spawns `claude` (which would hang the test).
    seed_claude(root.path(), "uuid-A", "a@x.com");
    let (o, _e, c) = run(root.path(), &["login", "work", "--tool", "claude"]);
    assert_eq!(c, 0);
    assert!(o.contains("swapdex add work --tool claude"), "{o}");
}

// C3: a profile name must not escape the store.
#[test]
fn profile_name_traversal_is_rejected() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    let (_o, _e, c) = run(root.path(), &["add", "../escape", "--tool", "codex"]);
    assert_eq!(c, 2, "traversal name must be rejected");
    assert!(!root.path().join(".local/share/escape").exists());
    let (_o, _e, c2) = run(root.path(), &["rm", "../escape", "--yes"]);
    assert_eq!(c2, 2);
}

// H1/BUG3: switching to the already-active account writes nothing and appends no
// timeline event.
#[test]
fn use_already_active_is_a_noop() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    run(root.path(), &["add", "work", "--tool", "codex"]);
    let (o, _e, c) = run(root.path(), &["use", "work", "--tool", "codex"]);
    assert_eq!(c, 0);
    assert!(o.contains("already active"), "{o}");
    let tl = std::fs::read_to_string(root.path().join(".local/share/swapdex/timeline.jsonl"))
        .unwrap_or_default();
    assert!(
        !tl.contains("\"account\":\"work\""),
        "no-op must not append a timeline event: {tl}"
    );
}

// rename moves the profile and ls reflects the new name.
#[test]
fn rename_moves_the_profile() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    run(root.path(), &["add", "work", "--tool", "codex"]);
    let (_o, e, c) = run(root.path(), &["rename", "work", "job"]);
    assert_eq!(c, 0, "rename failed: {e}");
    let (o, _e, _c) = run(root.path(), &["ls"]);
    assert!(o.contains("job"), "ls should show renamed profile: {o}");
}

// Mixed cross-tool live state: ls --json marks each profile active per-tool, not
// a flat bool that stars both.
#[test]
fn ls_json_reports_active_per_tool_in_mixed_state() {
    let root = tempfile::tempdir().unwrap();
    // claude live = uuid-A (profile work); codex live = acct-B (profile home)
    seed_claude(root.path(), "uuid-A", "a@x.com");
    seed_codex_tok(root.path(), "acct-A", "AT", "2026-07-04T00:00:00Z");
    run(root.path(), &["add", "work"]);
    seed_codex_tok(root.path(), "acct-B", "AT2", "2026-07-04T00:00:00Z");
    run(root.path(), &["add", "home", "--tool", "codex"]);
    let (o, _e, c) = run(root.path(), &["ls", "--json"]);
    assert_eq!(c, 0);
    let rows: serde_json::Value = serde_json::from_str(o.trim()).unwrap();
    let get = |name: &str| -> Vec<String> {
        rows.as_array()
            .unwrap()
            .iter()
            .find(|r| r["name"] == name)
            .unwrap()["active_tools"]
            .as_array()
            .unwrap()
            .iter()
            .map(|t| t.as_str().unwrap().to_string())
            .collect()
    };
    assert_eq!(
        get("work"),
        vec!["claude-code"],
        "work is active only for claude"
    );
    assert_eq!(get("home"), vec!["codex"], "home is active only for codex");
}

// A stray/legacy file in the store dir must not break a switch (swapdex derives
// the active account from the live login, not any stored hint).
#[test]
fn stray_file_in_store_is_ignored() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    run(root.path(), &["add", "work", "--tool", "codex"]);
    std::fs::write(
        root.path().join(".local/share/swapdex/active.json"),
        b"[1,2,3]",
    )
    .unwrap();
    seed_codex(root.path(), "acct-B"); // force a real switch
    let (_o, _e, c) = run(root.path(), &["use", "work", "--tool", "codex"]);
    assert_ne!(c, 101, "must not panic on a stray file");
    assert_eq!(c, 0);
}

// The bare `swapdex` prints the ASCII wordmark; piped output carries no ANSI.
#[test]
fn no_args_prints_ascii_banner_plain_when_piped() {
    let root = tempfile::tempdir().unwrap();
    let (o, _e, c) = run(root.path(), &[]);
    assert_eq!(c, 0);
    assert!(o.contains('\u{2588}'), "should print block ASCII art");
    assert!(
        !o.contains('\u{1b}'),
        "no ANSI colour codes when stdout is piped"
    );
}

// completions generate a shell script; status --json is valid JSON.
#[test]
fn completions_and_status_json() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    let (o, _e, c) = run(root.path(), &["completions", "bash"]);
    assert_eq!(c, 0);
    assert!(
        o.contains("swapdex"),
        "completion script should mention swapdex"
    );
    let (o2, _e, c2) = run(root.path(), &["status", "--json"]);
    assert_eq!(c2, 0);
    let v: serde_json::Value =
        serde_json::from_str(o2.trim()).expect("status --json must be valid JSON");
    assert!(v.is_array(), "status --json is an array of tools");
}

fn seed_codex_tok(root: &Path, account_id: &str, access: &str, last_refresh: &str) {
    let d = root.join(".codex");
    std::fs::create_dir_all(&d).unwrap();
    std::fs::write(
        d.join("auth.json"),
        serde_json::to_vec(&serde_json::json!({
            "auth_mode":"chatgpt","OPENAI_API_KEY":"sk-X",
            "tokens":{"id_token":"h.eyJlbWFpbCI6ImFAeC5jb20ifQ.s","access_token":access,
                      "refresh_token":"RT","account_id":account_id},
            "last_refresh":last_refresh}))
        .unwrap(),
    )
    .unwrap();
}

fn seed_claude(root: &Path, uuid: &str, email: &str) {
    let d = root.join(".claude");
    std::fs::create_dir_all(&d).unwrap();
    std::fs::write(
        d.join(".credentials.json"),
        serde_json::to_vec(&serde_json::json!({"claudeAiOauth":{
            "accessToken":"AT","refreshToken":"RT","expiresAt":9999999999999i64,
            "subscriptionType":"max"}}))
        .unwrap(),
    )
    .unwrap();
    std::fs::write(
        root.join(".claude.json"),
        serde_json::to_vec(&serde_json::json!({
            "oauthAccount":{"accountUuid":uuid,"emailAddress":email,"displayName":"X"}}))
        .unwrap(),
    )
    .unwrap();
}

// --tool must reject a typo instead of silently falling through to both.
#[test]
fn tool_typo_is_rejected_not_fail_open() {
    let root = tempfile::tempdir().unwrap();
    seed_codex(root.path(), "acct-A");
    let (_o, e, c) = run(root.path(), &["use", "x", "--tool", "cluade"]);
    assert_ne!(c, 0, "typo'd --tool must be rejected");
    assert!(e.contains("cluade") || e.contains("possible values"), "{e}");
}

// Two accounts with an EMPTY account_id must not compare 'already active' - the
// switch must actually write, never silently keep the wrong account.
#[test]
fn empty_account_id_still_switches() {
    let root = tempfile::tempdir().unwrap();
    seed_codex_tok(root.path(), "", "AAA", "2026-07-04T00:00:00Z");
    run(root.path(), &["add", "p1", "--tool", "codex"]);
    seed_codex_tok(root.path(), "", "BBB", "2026-07-04T00:00:00Z"); // different live login, same empty id
    let (o, _e, c) = run(root.path(), &["use", "p1", "--tool", "codex"]);
    assert_eq!(c, 0);
    assert!(
        !o.contains("already active"),
        "empty ids must not be 'already active': {o}"
    );
    let live: serde_json::Value =
        serde_json::from_slice(&std::fs::read(root.path().join(".codex/auth.json")).unwrap())
            .unwrap();
    assert_eq!(
        live["tokens"]["access_token"], "AAA",
        "must actually switch to p1"
    );
}

// A both-tool profile with a stale Codex snapshot must show (stale) in ls, even
// though claude-code sorts first.
#[test]
fn ls_shows_stale_codex_in_a_both_tool_profile() {
    let root = tempfile::tempdir().unwrap();
    seed_claude(root.path(), "uuid-A", "a@x.com");
    seed_codex_tok(root.path(), "acct-A", "AT", "2020-01-01T00:00:00Z"); // stale codex
    run(root.path(), &["add", "work"]); // both tools
    let (o, _e, c) = run(root.path(), &["ls"]);
    assert_eq!(c, 0);
    assert!(
        o.contains("(stale)"),
        "codex staleness must surface in a both-tool profile: {o}"
    );
}

// add <name> default-both attaches a newly-available tool without --update.
#[test]
fn add_default_both_attaches_missing_tool() {
    let root = tempfile::tempdir().unwrap();
    seed_claude(root.path(), "uuid-A", "a@x.com"); // only claude present
    run(root.path(), &["add", "work"]);
    seed_codex_tok(root.path(), "acct-A", "AT", "2026-07-04T00:00:00Z"); // now codex too
    let (o, _e, c) = run(root.path(), &["add", "work"]); // default both, no --update
    assert_eq!(c, 0, "should attach codex without --update: {o}");
    let (ls, _e, _c) = run(root.path(), &["ls"]);
    assert!(
        ls.contains("codex"),
        "codex should now be in the profile: {ls}"
    );
}

// ls marks a Codex profile whose login has not refreshed in a long time as
// stale (its refresh token may have rotated) - a cross-tool safety cue.
#[test]
fn ls_marks_a_stale_codex_profile() {
    let root = tempfile::tempdir().unwrap();
    let d = root.path().join(".codex");
    std::fs::create_dir_all(&d).unwrap();
    std::fs::write(
        d.join("auth.json"),
        serde_json::to_vec(&serde_json::json!({
            "auth_mode":"chatgpt","OPENAI_API_KEY":"sk-X",
            "tokens":{"id_token":"h.eyJlbWFpbCI6ImFAeC5jb20ifQ.s","access_token":"AT",
                      "refresh_token":"RT","account_id":"acct-A"},
            "last_refresh":"2020-01-01T00:00:00Z"}))
        .unwrap(),
    )
    .unwrap();
    run(root.path(), &["add", "old", "--tool", "codex"]);
    let (o, _e, c) = run(root.path(), &["ls"]);
    assert_eq!(c, 0);
    assert!(
        o.contains("(stale)"),
        "old codex login should be flagged stale: {o}"
    );
}

// BUG1: right after a fresh Claude login there is no ~/.claude.json yet; add must
// still work.
#[test]
fn add_works_without_claude_json() {
    let root = tempfile::tempdir().unwrap();
    let d = root.path().join(".claude");
    std::fs::create_dir_all(&d).unwrap();
    std::fs::write(
        d.join(".credentials.json"),
        serde_json::to_vec(&serde_json::json!({"claudeAiOauth":{
            "accessToken":"AT","refreshToken":"RT","expiresAt":9999999999999i64,
            "subscriptionType":"max"}}))
        .unwrap(),
    )
    .unwrap();
    let (_o, e, c) = run(root.path(), &["add", "work", "--tool", "claude"]);
    assert_eq!(c, 0, "add must work without .claude.json: {e}");
}