/**
 * thinking-level.ts unit tests: the conversation-time picker's short-name lookup — the five
 * levels map to their localized names, while "" (no override yet) and session_meta's
 * "default" resolve to null (trigger shows a placeholder; the session tag hides).
 */
import { describe, expect, it } from "vitest";
import { THINKING_LEVELS, thinkingLevelLabel } from "../src/features/chat/thinking-level";

/** Mirrors the shape of S.chat.thinkingLevelNames. */
const NAMES: Readonly<Record<string, string>> = {
  none: "None",
  low: "Low",
  medium: "Medium",
  high: "High",
  xhigh: "Extreme High",
};

describe("thinkingLevelLabel", () => {
  it("maps each of the five levels to its localized short name (menu order preserved)", () => {
    expect(THINKING_LEVELS).toEqual(["none", "low", "medium", "high", "xhigh"]);
    expect(THINKING_LEVELS.map((l) => thinkingLevelLabel(NAMES, l))).toEqual([
      "None",
      "Low",
      "Medium",
      "High",
      "Extreme High",
    ]);
  });

  it("returns null for non-levels: '' (no override yet), session_meta's 'default', unknown, null", () => {
    expect(thinkingLevelLabel(NAMES, "")).toBeNull();
    expect(thinkingLevelLabel(NAMES, "default")).toBeNull();
    expect(thinkingLevelLabel(NAMES, "ultra")).toBeNull();
    expect(thinkingLevelLabel(NAMES, null)).toBeNull();
    expect(thinkingLevelLabel(NAMES, undefined)).toBeNull();
  });

  it("falls back to the raw value if the name table misses a level (defensive)", () => {
    expect(thinkingLevelLabel({}, "medium")).toBe("medium");
  });
});