import { describe, expect, it } from "@suaveplan/testing/runner";
import { LoudnessMeter } from "../src/index.js";
import { buildDoc, sine } from "./helpers/build-doc.js";

describe("LoudnessMeter integration", () => {
    it("full round-trip on a 48 kHz stereo 5 s fixture", {
        timeout: 60000,
    }, async () => {
        const sr = 48000;
        const left = sine(0.5, 1000, sr, 5);
        const right = sine(0.5, 1000, sr, 5);
        const doc = buildDoc([left, right], sr);
        const result = await new LoudnessMeter().analyze(doc);
        expect(result.op).toBe("loudness-meter");
        expect(result.sampleRate).toBe(sr);
        expect(result.dcOffset.length).toBe(2);
        expect(result.truePeak).toBeGreaterThanOrEqual(result.peak - 1e-3);
    });

    it("44.1 kHz mono is handled with rate-adapted K-weighting", {
        timeout: 30000,
    }, async () => {
        const sr = 44100;
        const doc = buildDoc([sine(0.25, 1000, sr, 4)], sr);
        const r = await new LoudnessMeter().analyze(doc);
        expect(Number.isFinite(r.lufs)).toBe(true);
        expect(Number.isFinite(r.truePeak)).toBe(true);
    });
});