import { test } from "node:test";
import assert from "node:assert/strict";

import { AVAILABILITY, isValidManifest } from "../../src/lib/preview/contracts.js";
import { buildArtistManifest, buildAlbumManifest, buildFixtureManifest } from "../../src/lib/preview/manifest.js";

const T0 = 1_700_000_000_000;

const catalogTrack = (id, over = {}) => ({
    id,
    title: `Track ${id}`,
    artist: "Röyksopp",
    album: "Melody A.M.",
    album_id: 9,
    cover: `cover-${id}`,
    duration_secs: 219,
    preview: `https://cdnt-preview.dzcdn.net/x-${id}.mp3?hdnea=exp=1784761537~hmac=aa`,
    track_no: 1,
    disk_number: 1,
    unreleased: false,
    ...over,
});

test("artist manifest: rank order kept, exact provider-id dupes collapse", () => {
    const m = buildArtistManifest({
        artist: { id: 480, name: "Röyksopp", picture: "pic" },
        popularTracks: [catalogTrack(1), catalogTrack(2), catalogTrack(1), catalogTrack(3)],
        createdAtMs: T0,
    });
    assert.equal(m.items.length, 3); // dupe of id 1 collapsed
    assert.deepEqual(m.items.map((i) => i.sources[0].providerTrackId), ["1", "2", "3"]);
    assert.deepEqual(m.items.map((i) => i.sourceOrdinal), [0, 1, 2]);
    assert.equal(m.context.kind, "artist");
    assert.equal(m.context.sourceTrackCount, 4); // source count is truthful
    assert.ok(isValidManifest(m));
});

test("artist manifest: same title, different provider ids do NOT collapse", () => {
    const m = buildArtistManifest({
        artist: { id: 480, name: "Röyksopp" },
        popularTracks: [catalogTrack(1, { title: "Same" }), catalogTrack(2, { title: "Same" })],
        createdAtMs: T0,
    });
    assert.equal(m.items.length, 2);
});

test("availability from catalog rows: preview/empty/unreleased", () => {
    const m = buildArtistManifest({
        artist: { id: 1, name: "A" },
        popularTracks: [
            catalogTrack(1),
            catalogTrack(2, { preview: "" }),
            catalogTrack(3, { preview: undefined }),
            catalogTrack(4, { unreleased: true }),
        ],
        createdAtMs: T0,
    });
    assert.deepEqual(
        m.items.map((i) => i.initialAvailability),
        [AVAILABILITY.AVAILABLE, AVAILABILITY.NOT_PROVIDED, AVAILABILITY.NOT_PROVIDED, AVAILABILITY.UNRELEASED]
    );
    // unreleased rows lose their mutating actions
    assert.equal(m.items[3].actions.playFull, false);
    assert.equal(m.items[3].actions.save, false);
});

test("no signed URL survives into the manifest", () => {
    const m = buildArtistManifest({
        artist: { id: 1, name: "A" },
        popularTracks: [catalogTrack(1)],
        createdAtMs: T0,
    });
    const json = JSON.stringify(m);
    assert.ok(!json.includes("hdnea"), "signed URL leaked into manifest");
    assert.ok(!json.includes("cdnt-preview"), "media host leaked into manifest");
});

test("album manifest: disc/track sort with stable fallback + context inheritance", () => {
    const m = buildAlbumManifest({
        album: { id: 77, title: "The Wall", artist: "Pink Floyd", cover: "wall.jpg" },
        tracks: [
            catalogTrack(21, { disk_number: 2, track_no: 1, album: "", album_id: null, cover: null }),
            catalogTrack(11, { disk_number: 1, track_no: 1 }),
            catalogTrack(12, { disk_number: 1, track_no: 2 }),
            catalogTrack(13, { disk_number: null, track_no: null }), // sorts by response order within disc 1
        ],
        createdAtMs: T0,
    });
    assert.deepEqual(m.items.map((i) => i.sources[0].providerTrackId), ["13", "11", "12", "21"]);
    const disc2 = m.items[3];
    assert.equal(disc2.album, "The Wall"); // inherited
    assert.equal(disc2.albumId, "77");
    assert.equal(disc2.artwork, "wall.jpg");
    assert.equal(m.context.sourceTrackCount, 4);
});

test("fixture manifest: playlist duplicates keep distinct sessionKeys, shared recordingKey", () => {
    const m = buildFixtureManifest({
        kind: "playlist",
        rows: [
            { providerTrackId: "9", title: "Song" },
            { providerTrackId: "8", title: "Other" },
            { providerTrackId: "9", title: "Song" }, // duplicate occurrence
        ],
        createdAtMs: T0,
    });
    assert.equal(m.items.length, 3);
    assert.notEqual(m.items[0].sessionKey, m.items[2].sessionKey);
    assert.equal(m.items[0].recordingKey, m.items[2].recordingKey);
    assert.ok(isValidManifest(m));
});

test("fixture manifest: apple identity is a first-class source ref", () => {
    const m = buildFixtureManifest({
        rows: [{ provider: "apple", providerTrackId: "ap-123", isrc: "USX9P1234567", matchConfidence: "isrc", title: "X" }],
        createdAtMs: T0,
    });
    const src = m.items[0].sources[0];
    assert.equal(src.provider, "apple");
    assert.equal(src.providerTrackId, "ap-123");
    assert.equal(src.matchConfidence, "isrc");
});