/**
 * Fork selector (`o` in the sessions pane, what pi's `/fork` shows): the title
 * and footer hints for the centered menu of user messages to fork before.
 *
 * Like ./restore-dialog.ts, this is only the wording for a ./select-dialog.ts
 * preset — the panel builds the item list from the session's fork points, the
 * confirmation (./confirm-dialog.ts) then guards the actual fork.
 *
 * fork 选择器只是通用选择菜单（SelectDialog，带滚动窗口）的一个预设：标题 + 提示。
 * 选项来自会话里的 user 消息（app 层从 data 拿），默认停在最后一条（pi 的默认）。
 */

import { t } from "../../i18n/index.ts";
import type { KeyHint } from "../../types.ts";

/** Title on the top border of the fork selector. */
export function forkDialogTitle(): string {
	return t("dialog.forkTitle");
}

/** Footer hints while the fork selector is open. */
export function forkDialogHints(): KeyHint[] {
	return [
		["j/k", t("hint.move")],
		["Enter", t("hint.select")],
		["Esc", t("hint.cancel")],
	];
}

/**
 * Title-bar subject of the confirmation: the picked message's position in the
 * list, not its text (the selector already showed it, and a 60-column box
 * would cut it to a meaningless "…"). Esc goes back to that same entry.
 */
export function forkDialogSubject(index: number, total: number): string {
	return `#${index + 1}/${total}`;
}