/**
 * Pure pieces of Claude Code's turn-duration line ("✻ Cooked for 5m 12s"),
 * matched to CC's SystemTextMessage/TurnDurationMessage render
 * (`${verb} for ${duration}`, dim, led by the ✻ teardrop asterisk). CC shows
 * it after every response with no minimum-duration threshold; the optional
 * token-budget suffix is CC's separate /budget feature and is not replicated.
 */

import { countNoun, formatDuration } from "../lib/tui-render.ts";

/** CC's TEARDROP_ASTERISK (figures.ts), the mark leading the duration line. */
export const TURN_MARK = "✻";

/**
 * `<Verb> for <duration>` — duration formatted like the spinner's elapsed
 * clock — plus Claude Code's background-shell tail (`· 2 shells still
 * running`) when shells outlive the turn.
 */
export function turnDurationText(verb: string, durationMs: number, runningShells = 0): string {
	const shells = runningShells > 0 ? ` · ${countNoun(runningShells, "shell")} still running` : "";
	return `${verb} for ${formatDuration(0, durationMs)}${shells}`;
}