/**
 * The clips of a sound (#357): stretches of its file with a name and a cut of their own, named by a
 * sound field the way a frame is by a texture field. The sound itself is the whole file.
 */
import { describe, expect, it } from 'vitest';
import {
  CreateAssetCommand,
  CreateSoundCommand,
  DuplicateAssetCommand,
} from '../../src/core/commands/assetCommands';
import {
  AddClipCommand,
  RemoveClipCommand,
  RenameClipCommand,
  SetClipPropsCommand,
} from '../../src/core/commands/clipCommands';
import { SetSongCommand } from '../../src/core/commands/songCommands';
import type { SoundAsset } from '../../src/core/model/Asset';
import { findAsset, findAssetOf } from '../../src/core/model/Project';
import { clipsOf, findSound } from '../../src/core/model/sound';
import { embeddedCopy, embeddedUsedBy } from '../../src/core/music/embedded';
import { sequenceNeeds } from '../../src/core/music/needs';
import { itemFx, newItem, songSequence } from '../../src/core/music/song';
import { assetRefLabel, soundChoices } from '../../src/core/properties/assetRef';
import { playedSoundById } from '../../src/core/properties/playedSound';
import { referencedAssetId } from '../../src/core/properties/references';
import { END_KEY, START_KEY } from '../../src/core/properties/sounds';
import { deserializeProject, serializeProject } from '../../src/core/store/serialize';
import { clipAt } from '../../src/editor/sound/waveView';
import { makeProject } from '../helpers';

const FILE = `${'d5'.repeat(32)}.wav`;
const BAR = 1920;

/** A sound "Kick" with two clips, and a song with a take of its own that has one clip. */
function setup() {
  const f = makeProject();
  const kick = new CreateSoundCommand('Kick', FILE);
  f.stack.execute(kick);
  const first = new AddClipCommand(kick.asset.id, { [START_KEY]: 0.5, [END_KEY]: 0.75 });
  const second = new AddClipCommand(kick.asset.id, { [START_KEY]: 1 });
  f.stack.execute(first);
  f.stack.execute(second);
  const made = new CreateAssetCommand('song', 'Theme');
  f.stack.execute(made);
  const songId = made.asset.id;
  const song = () => findAssetOf(f.project, songId, 'song')!;
  const take = new CreateSoundCommand('Take 1', FILE, songId);
  f.stack.execute(take);
  const takeClip = new AddClipCommand(take.asset.id, { [START_KEY]: 2, [END_KEY]: 3 });
  f.stack.execute(takeClip);
  const track = song().tracks[0]!.id;
  const item = newItem({ track, kind: 'sound', asset: takeClip.clipId, tick: 0, length: BAR });
  f.stack.execute(new SetSongCommand(songId, { items: [item] }));
  return {
    f,
    song,
    songId,
    track,
    kick: () => findAssetOf(f.project, kick.asset.id, 'sound')!,
    firstId: first.clipId,
    secondId: second.clipId,
    takeId: take.asset.id,
    takeClipId: takeClip.clipId,
  };
}

describe('a clip of a sound (#357)', () => {
  it('is named "Clip 1", 2 … per sound, and resolves to its sound', () => {
    const { f, kick, firstId, secondId, takeId, takeClipId } = setup();
    expect(clipsOf(kick()).map((c) => c.name)).toEqual(['Clip 1', 'Clip 2']);
    expect(findSound(f.project, secondId)).toEqual({ asset: kick(), clip: clipsOf(kick())[1] });
    expect(findSound(f.project, kick().id)).toEqual({ asset: kick(), clip: null });
    expect(findSound(f.project, takeClipId)?.asset.id).toBe(takeId);
    expect(findSound(f.project, 'nothing')).toBeNull();
    expect(findSound(f.project, f.project.assets.find((a) => a.type === 'song')!.id)).toBeNull();
    expect(firstId).not.toBe(secondId);
  });

  it('plays its stretch, the sound the whole file', () => {
    const { f, kick, firstId } = setup();
    expect(playedSoundById(f.project, kick().id)).toBe(FILE);
    expect(playedSoundById(f.project, firstId)).toBe(`${FILE}#0.5~0.75~0.005~0.005~linear~linear`);
  });

  it('reads "Sound / Clip" wherever a field names it, and is offered after its sound', () => {
    const { f, kick, firstId, secondId, takeClipId } = setup();
    expect(assetRefLabel(f.project, firstId)).toBe('Kick / Clip 1');
    expect(assetRefLabel(f.project, takeClipId)).toBe('• Take 1 / Clip 1');
    expect(assetRefLabel(f.project, 'gone')).toBe('gone?');
    // What a song keeps to itself is offered nowhere, nor are its clips.
    expect(soundChoices(f.project)).toEqual([
      { id: kick().id, label: 'Kick' },
      { id: firstId, label: 'Kick / Clip 1' },
      { id: secondId, label: 'Kick / Clip 2' },
    ]);
    expect(
      referencedAssetId(f.project, { key: 'sound', label: 'Sound', kind: 'sound', default: '' }, firstId),
    ).toBe(kick().id);
  });

  it('is set, renamed and deleted in steps an undo takes back', () => {
    const { f, kick, firstId, secondId } = setup();
    f.stack.execute(new SetClipPropsCommand(kick().id, firstId, { [START_KEY]: 0.25, [END_KEY]: 0.5 }));
    expect(clipsOf(kick())[0]!.props).toEqual({ [START_KEY]: 0.25, [END_KEY]: 0.5 });
    f.stack.undo();
    expect(clipsOf(kick())[0]!.props).toEqual({ [START_KEY]: 0.5, [END_KEY]: 0.75 });

    f.stack.execute(new RenameClipCommand(kick().id, secondId, 'Clip 1'));
    expect(clipsOf(kick())[1]!.name).toBe('Clip 1 2');
    f.stack.undo();

    f.stack.execute(new RemoveClipCommand(kick().id, firstId));
    expect(clipsOf(kick()).map((c) => c.id)).toEqual([secondId]);
    expect(playedSoundById(f.project, firstId)).toBe('');
    f.stack.undo();
    expect(clipsOf(kick()).map((c) => c.id)).toEqual([firstId, secondId]);
  });

  it('refuses a value a clip cannot hold', () => {
    const { f, kick, firstId } = setup();
    const before = structuredClone(clipsOf(kick()));
    const set = (values: Record<string, string | number>) => () =>
      f.stack.execute(new SetClipPropsCommand(kick().id, firstId, values));
    expect(set({ volume: 1 })).toThrow('A clip has no "volume"');
    expect(set({ [START_KEY]: -1 })).toThrow('Start (s) needs a number of at least 0');
    expect(set({ [START_KEY]: Number.NaN })).toThrow('Start (s) needs a number of at least 0');
    expect(set({ fadeInCurve: 'wobbly' })).toThrow('Fade in curve has no "wobbly"');
    expect(() => f.stack.execute(new RenameClipCommand(kick().id, firstId, '  '))).toThrow(
      'A clip needs a name',
    );
    expect(clipsOf(kick())).toEqual(before);
  });

  it('survives a round trip; a clip repeating an id the document has is dropped', () => {
    const { f, kick, firstId } = setup();
    expect(deserializeProject(serializeProject(f.project))).toEqual(f.project);
    const raw = serializeProject(f.project) as { assets: { id: string; clips?: unknown[] }[] };
    const stored = raw.assets.find((a) => a.id === kick().id)!;
    stored.clips = [
      ...stored.clips!,
      { id: firstId, name: 'Twin', props: {} },
      { id: kick().id, name: 'Sound', props: {} },
      { id: 'odd', name: 'Odd', props: { start: 1, volume: 0.5 } },
    ];
    const read = findAssetOf(deserializeProject(raw), kick().id, 'sound')!;
    expect(clipsOf(read).map((c) => c.name)).toEqual(['Clip 1', 'Clip 2', 'Odd']);
    expect(clipsOf(read)[2]!.props).toEqual({ start: 1 });
  });

  it('gets a fresh id in a duplicate of its sound', () => {
    const { f, kick, firstId, secondId } = setup();
    const duplicate = new DuplicateAssetCommand(kick().id);
    f.stack.execute(duplicate);
    const copy = findAssetOf(f.project, duplicate.copyId, 'sound')!;
    expect(clipsOf(copy).map((c) => c.name)).toEqual(['Clip 1', 'Clip 2']);
    expect(clipsOf(copy).map((c) => c.id)).not.toContain(firstId);
    expect(clipsOf(copy).map((c) => c.id)).not.toContain(secondId);
    expect(findSound(f.project, firstId)?.asset.id).toBe(kick().id);
  });
});

describe('a clip in a song (#357)', () => {
  it('is played by its item, through the FX of its sound', () => {
    const { f, song, takeClipId } = setup();
    const take = findSound(f.project, takeClipId)!.asset;
    take.props.fx = 'some-fx';
    expect(songSequence(f.project, song()).clips?.map((c) => c.sound)).toEqual([takeClipId]);
    expect(sequenceNeeds(f.project, songSequence(f.project, song())).files).toEqual([
      `${FILE}#2~3~0.005~0.005~linear~linear`,
    ]);
    expect(itemFx(f.project, song().items[0]!)).toBe('some-fx');
  });

  it('keeps its take, which a second item shares, on the same clip or the whole take', () => {
    const { f, song, songId, track, takeId, takeClipId } = setup();
    expect(embeddedUsedBy(f.project, song().items).map((a) => a.id)).toEqual([takeId]);
    const before = f.project.assets.length;
    const [item] = song().items;
    const second = { ...item!, id: 'second', tick: BAR };
    f.stack.execute(new SetSongCommand(songId, { items: [item!, second] }));
    expect(song().items.map((i) => i.asset)).toEqual([takeClipId, takeClipId]);
    f.stack.execute(new SetSongCommand(songId, { items: [item!, { ...second, asset: takeId }] }));
    expect(song().items.map((i) => i.asset)).toEqual([takeClipId, takeId]);
    expect(f.project.assets.length).toBe(before);
    expect(song().items.map((i) => i.track)).toEqual([track, track]);
  });

  it('is copied along when an item is given a copy of the sound or the song is duplicated', () => {
    const { f, song, kick, secondId, takeClipId } = setup();
    const { copy, ids } = embeddedCopy(kick(), song());
    const copied = clipsOf(copy as SoundAsset);
    expect(ids.get(secondId)).toBe(copied[1]!.id);
    expect(ids.get(kick().id)).toBe(copy.id);

    const duplicate = new DuplicateAssetCommand(song().id);
    f.stack.execute(duplicate);
    const twin = findAssetOf(f.project, duplicate.copyId, 'song')!;
    const named = twin.items[0]!.asset;
    expect(named).not.toBe(takeClipId);
    const found = findSound(f.project, named)!;
    expect([found.asset.owner, found.clip?.name]).toEqual([twin.id, 'Clip 1']);
    expect(findAsset(f.project, found.asset.id)).toBe(found.asset);
  });
});

describe('the strip of the Sound tab (#357)', () => {
  it('picks the band under the pointer, the one drawn last where they lie over each other', () => {
    const view = { panX: 0, pxPerSecond: 100 };
    const bands = [
      { id: 'a', span: { start: 0, end: 1 } },
      { id: 'b', span: { start: 0.5, end: 2 } },
    ];
    expect([10, 60, 150, 250].map((x) => clipAt(view, bands, x))).toEqual(['a', 'b', 'b', null]);
  });
});