import { describe, test, expect } from "vitest";
import { normalizeSearchText, matchesSearchQuery } from "./search-match";

describe("normalizeSearchText", () => {
  test("lowercases and transliterates umlauts to their ASCII equivalent", () => {
    expect(normalizeSearchText("Frühtracht")).toBe("fruehtracht");
    expect(normalizeSearchText("kräftig")).toBe("kraeftig");
    expect(normalizeSearchText("Altenmünster")).toBe("altenmuenster");
    expect(normalizeSearchText("rußarm")).toBe("russarm");
  });

  test("leaves already-ASCII text unchanged apart from casing", () => {
    expect(normalizeSearchText("Honig")).toBe("honig");
  });
});

describe("matchesSearchQuery", () => {
  test("matches when the query uses real umlauts and the haystack does too", () => {
    expect(matchesSearchQuery("Frühtracht 2026", "Früh")).toBe(true);
  });

  test("matches when the query uses the ASCII transliteration of an umlaut", () => {
    expect(matchesSearchQuery("Frühtracht 2026", "fruehtracht")).toBe(true);
  });

  test("matches when the haystack uses the ASCII transliteration and the query the real umlaut", () => {
    expect(matchesSearchQuery("kraeftiger Sommerhonig", "kräftig")).toBe(true);
  });

  test("is case-insensitive", () => {
    expect(matchesSearchQuery("Blütenhonig", "BLUETE")).toBe(true);
  });

  test("requires every word of a multi-word query to match", () => {
    expect(matchesSearchQuery("kräftiger Sommerhonig aus Altenmünster", "kraeftig honig")).toBe(true);
    expect(matchesSearchQuery("kräftiger Sommerhonig aus Altenmünster", "kraeftig kerze")).toBe(false);
  });

  test("returns false when no word matches", () => {
    expect(matchesSearchQuery("Bienenwachskerze", "propolis")).toBe(false);
  });

  test("returns true for an empty query (no filter applied)", () => {
    expect(matchesSearchQuery("Bienenwachskerze", "")).toBe(true);
  });
});