clauth 0.7.4

Manage multiple Claude Code accounts, monitor 5h/7d usage with configurable auto-switch and delegation with an MCP plugin. CLI + TUI.
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//! `fallback_flow_lines`'s all-exhausted "resumes: <name> in ~<eta>" caption
//! (issue #10 follow-up) — the sibling of the "switching to <name> in ~<eta>"
//! projection line, driven by `crate::fallback::soonest_resume`.

use super::*;
use crate::profile::{AppState, ProfileName};
use crate::usage::{UsageInfo, epoch_secs_to_iso, now_epoch_secs};
use std::collections::BTreeMap;

/// ISO reset `secs` in the future.
fn reset_in(secs: i64) -> String {
    epoch_secs_to_iso(now_epoch_secs() + secs)
}

/// A chain-eligible OAuth profile with a live 5h window at `util`%, resetting
/// in `reset_secs`.
fn profile(name: &str, threshold: f64, util: f64, reset_secs: i64) -> Profile {
    Profile {
        name: name.into(),
        base_url: None,
        api_key: None,
        auto_start: false,
        env: BTreeMap::new(),
        models: Default::default(),
        fallback_threshold: Some(threshold),
        last_resort: false,
        bell_threshold: None,
        credentials: None,
        usage: Some(UsageInfo {
            five_hour: Some(UsageWindow {
                utilization: util,
                resets_at: Some(reset_in(reset_secs)),
            }),
            ..UsageInfo::default()
        }),
        fetch_status: None,
        provider: None,
        third_party_usage: None,
    }
}

fn config_with(profiles: Vec<Profile>, active: Option<&str>, chain: Vec<&str>) -> AppConfig {
    let names: Vec<ProfileName> = profiles.iter().map(|p| p.name.clone()).collect();
    AppConfig {
        state: AppState {
            active_profile: active.map(Into::into),
            profiles: names,
            fallback_chain: chain.into_iter().map(Into::into).collect(),
            ..AppState::default()
        },
        profiles,
    }
}

/// Flattens a line's spans to plain text for substring assertions.
fn line_text(line: &Line<'static>) -> String {
    line.spans.iter().map(|s| s.content.as_ref()).collect()
}

fn resumes_line(lines: &[Line<'static>]) -> Option<String> {
    lines.iter().map(line_text).find(|t| t.contains("resumes:"))
}

// Wrap mode: the active profile itself is exhausted and stays put (no sink,
// `next_target` returns `None`) — previously silent. b resets sooner than a.
#[test]
fn all_exhausted_wrap_mode_shows_resumes_hint() {
    let a = profile("a", 95.0, 100.0, 3600);
    let b = profile("b", 95.0, 100.0, 1800);
    let config = config_with(vec![a, b], Some("a"), vec!["a", "b"]);
    let app = App::new(config);
    let lines = fallback_flow_lines(&app, 60, 20);
    let hint =
        resumes_line(&lines).expect("resumes hint must render when the whole chain is exhausted");
    assert!(
        hint.contains("resumes: b in ~"),
        "names the soonest-resuming member: {hint}"
    );
}

// Wrap-off: switch-off-all already cleared the active profile. The hint must
// not depend on an active profile being set at all.
#[test]
fn all_exhausted_wrap_off_active_cleared_shows_resumes_hint() {
    let a = profile("a", 95.0, 100.0, 900);
    let b = profile("b", 95.0, 100.0, 3600);
    let mut config = config_with(vec![a, b], None, vec!["a", "b"]);
    config.state.wrap_off = true;
    let app = App::new(config);
    let lines = fallback_flow_lines(&app, 60, 20);
    let hint = resumes_line(&lines)
        .expect("resumes hint must render even with no active profile (wrap-off cleared it)");
    assert!(hint.contains("resumes: a in ~"), "{hint}");
}

// b still has headroom — the chain is not all-exhausted, so the caption must
// stay hidden (recovery would relink b on the next tick regardless).
#[test]
fn partially_exhausted_chain_hides_resumes_hint() {
    let a = profile("a", 95.0, 100.0, 3600);
    let b = profile("b", 95.0, 20.0, 3600);
    let config = config_with(vec![a, b], Some("a"), vec!["a", "b"]);
    let app = App::new(config);
    let lines = fallback_flow_lines(&app, 60, 20);
    assert!(
        resumes_line(&lines).is_none(),
        "must not show when the chain isn't fully exhausted"
    );
}

// Nobody near their threshold at all — the ordinary healthy-chain case.
#[test]
fn healthy_chain_hides_resumes_hint() {
    let a = profile("a", 95.0, 10.0, 3600);
    let b = profile("b", 95.0, 5.0, 3600);
    let config = config_with(vec![a, b], Some("a"), vec!["a", "b"]);
    let app = App::new(config);
    let lines = fallback_flow_lines(&app, 60, 20);
    assert!(resumes_line(&lines).is_none());
}