import { readFileSync } from 'node:fs';
import { uploadVideo } from '../lib/projects.mjs';
import { MAKE_OBJECT, pickAssetType } from './lib/scaffold.mjs';

/**
 * Videos (#402). A WebM goes up and the worker turns it into an MP4 (in CI beside the PHP server,
 * on stein2 in the container game-maker-video). "+ → Video" offers it with what it is; Use makes
 * the asset and opens its tab, which shows the picture. A drag in the clip strip spans a clip, one
 * undo step. A sprite wearing the clip plays only that stretch, over and over, without sound in the
 * editor; Play starts it over from the clip's start and lets it be heard, Esc makes it quiet again.
 *
 * The test video is 2 s at 30 fps, a quarter each red, green, blue and white, with a tone. Colours
 * are read from the video the tab holds and from the screen.
 *
 * Everything it adds carries a `vd66` id or is the asset it made, and goes again at the end.
 */
const SPRITE = 'vd66-sprite';
const OBJECT = 'vd66-object';
const COLORS = { red: '#fe0000', green: '#00ff01', blue: '#0000ff', white: '#ffffff' };

export async function video(t) {
  const { check, sleep, json, mutate, click, clickText, drag, shot, showTab, play, stop } = t;
  const waitFor = async (read, done, tries = 40) => {
    let value = await read();
    for (let i = 0; i < tries && !done(value); i++) {
      await sleep(150);
      value = await read();
    }
    return value;
  };

  // 66a. Converted on the server: the asked size, length and frame rate, as an MP4 with a poster.
  const uploaded = await uploadVideo(
    t.baseUrl,
    readFileSync(new URL('./fixtures/colors.webm', import.meta.url)),
    'colors.webm',
  );
  check(
    'an uploaded WebM is converted to an MP4 with its size, length, frame rate and sound',
    uploaded.status === 'ready' &&
      /^[a-f0-9]{12}\/[a-f0-9]{64}\.mp4$/.test(uploaded.file) &&
      uploaded.width === 320 &&
      uploaded.height === 180 &&
      Math.abs(uploaded.duration - 2) < 0.05 &&
      uploaded.fps === 30 &&
      uploaded.audio === true &&
      uploaded.poster === uploaded.file.replace(/\.mp4$/, '.jpg'),
    JSON.stringify(uploaded),
  );

  // 66b. "+ → Video" offers it with what it is, Use makes the asset and opens the tab.
  await showTab('scene');
  await clickText('+');
  await pickAssetType(t, 'Video');
  const picker = await waitFor(
    () => json('__gm.videoPicker()'),
    (p) => p?.files.includes(uploaded.file),
  );
  check(
    'the + menu opens the video picker on what the server holds',
    Boolean(picker?.files.includes(uploaded.file)),
    JSON.stringify(picker),
  );
  const row = await json(`__gm.videoPickerRow(${JSON.stringify(uploaded.file)})`);
  await click(row.x, row.y);
  const picked = await json('__gm.videoPicker()');
  check(
    'a ready video says its size, length, frame rate and sound',
    picked.detail.includes('320 × 180 · 2 s · 30 fps · with sound'),
    picked.detail,
  );
  await shot('66-video-picker');
  await clickText('Use video');
  const assetId = await waitFor(
    () => json('__gm.videoTab.current()'),
    (id) => Boolean(id),
  );
  const asset = await json(`__gm.state.project.assets.find((a) => a.id === ${JSON.stringify(assetId)})`);
  check(
    'Use makes a video asset of it and opens its tab',
    asset?.type === 'video' &&
      asset.file === uploaded.file &&
      asset.width === 320 &&
      asset.fps === 30 &&
      asset.name === 'colors',
    JSON.stringify(asset),
  );

  // 66c. The tab shows the picture: red at the start, read from the video and from the screen.
  const preview = await waitFor(
    () => json('__gm.videoTab.preview()'),
    (p) => p?.shown && p.pixel?.[0] > 200,
  );
  const shownColor = (p) => json(`__gm.pixelAt(${Math.round(p.x + p.w / 2)}, ${Math.round(p.y + p.h / 2)})`);
  check(
    'the tab shows the video, its first frame red',
    preview?.shown &&
      preview.pixel[0] > 200 &&
      preview.pixel[1] < 50 &&
      (await shownColor(preview)) === COLORS.red,
    JSON.stringify({ preview, screen: await shownColor(preview) }),
  );

  // 66d. A drag in the strip spans a clip from 0.6 s to 1.4 s, which is then picked; one undo step.
  const from = await json('__gm.videoTab.stripAt(0.6)');
  const to = await json('__gm.videoTab.stripAt(1.4)');
  await drag(from.x, from.y, to.x, to.y);
  await sleep(300);
  const clips = await json('__gm.videoTab.clips()');
  const clip = clips[0];
  check(
    'a drag in the strip spans a clip, which is picked',
    clips.length === 1 &&
      Math.abs(clip.props.start - 0.6) < 0.02 &&
      Math.abs(clip.props.end - 1.4) < 0.02 &&
      (await json('__gm.videoTab.pickedClip()')) === clip.id,
    JSON.stringify({ clips, picked: await json('__gm.videoTab.pickedClip()') }),
  );
  const atClip = await waitFor(
    () => json('__gm.videoTab.preview()'),
    (p) => p?.pixel?.[1] > 200 && p.pixel[0] < 50,
  );
  check(
    'the tab stands at the picked clip’s start, green',
    atClip.pixel[1] > 200 && atClip.pixel[0] < 50,
    JSON.stringify(atClip),
  );
  await t.undo();
  const undone = await json('__gm.videoTab.clips()');
  await t.redo();
  check(
    'the clip is one undo step',
    undone.length === 0 && (await json('__gm.videoTab.clips()')).length === 1,
    JSON.stringify(undone),
  );

  // 66e. The undo left the video picked; a click on the band picks the clip again. Play in the tab
  //      runs the clip and moves the playhead; Stop holds it.
  const band = await json('__gm.videoTab.stripAt(1)');
  await click(band.x, band.y);
  check('a click on its band picks the clip', (await json('__gm.videoTab.pickedClip()')) === clip.id);
  const playButton = await json('__gm.videoTab.playButton()');
  await click(playButton.x, playButton.y);
  await sleep(500);
  const running = await json(
    '({ playing: __gm.videoTab.playing(), head: __gm.videoTab.playhead(), button: __gm.videoTab.playButton().text })',
  );
  check(
    'Play in the tab plays the picked clip from its start',
    running.playing && running.head > 0.6 && running.head < 1.4 && running.button === 'Stop',
    JSON.stringify(running),
  );
  await click(playButton.x, playButton.y);
  check('Stop holds it', (await json('__gm.videoTab.playing()')) === false);
  await shot('66-video-tab');

  // 66f. A sprite wearing the clip shows only its stretch, over and over: green and blue, never red
  //      or white, without sound in the editor.
  await showTab('scene');
  await mutate(`
    const p = __gm.state.project;
    const scene = __gm.state.activeScene;
    ${MAKE_OBJECT}
    p.assets.unshift({ id: '${SPRITE}', type: 'sprite', name: '${SPRITE}', props: { width: 320, height: 180, color: 0xffffff, texture: ${JSON.stringify(clip.id)}, shader: '' } });
    scene.objects.push(make('${OBJECT}', '${SPRITE}', '', 0, 'video'));
    __gm.state.select(null);
    __gm.lookAt(0, 0);`);
  await waitFor(
    () => json('__gm.videos()'),
    (players) => players.some((p) => p.ready),
  );
  const seen = new Set();
  for (let i = 0; i < 14; i++) {
    const r = await json(`__gm.objectRect('${OBJECT}')`);
    seen.add(await json(`__gm.pixelAt(${Math.round(r.x)}, ${Math.round(r.y)})`));
    await sleep(120);
  }
  const players = await json('__gm.videos()');
  check(
    'a sprite wearing the clip plays only its stretch, round and round',
    seen.has(COLORS.green) && seen.has(COLORS.blue) && !seen.has(COLORS.red) && !seen.has(COLORS.white),
    JSON.stringify([...seen]),
  );
  check(
    'the editor plays it without sound',
    players.length === 1 && players[0].muted && !players[0].paused && players[0].key.includes('#0.6~1.4~1~1'),
    JSON.stringify(players),
  );
  await shot('66-video-sprite');

  // 66g. Play starts it over from the clip's start and lets it be heard; Esc makes it quiet again.
  await play();
  await sleep(200);
  const heard = (await json('__gm.videos()'))[0];
  check(
    'Play starts the clip over and lets it be heard',
    heard && !heard.muted && !heard.paused && heard.time >= 0.6 && heard.time < 1.1,
    JSON.stringify(heard),
  );
  await stop();
  await sleep(200);
  const quiet = (await json('__gm.videos()'))[0];
  check('Esc makes it a quiet preview again', quiet && quiet.muted, JSON.stringify(quiet));

  // 66h. The sprite picked but not in the scene: only the inspector's preview wears the video. It
  //      asks for it every frame, so the player is not let go after 2 s; a let-go texture used to
  //      leave the preview drawing a destroyed one, and the batcher threw on every frame.
  await mutate(`
    const p = __gm.state.project;
    for (const holder of p.assets) if (holder.objects) holder.objects = holder.objects.filter((o) => o.id !== '${OBJECT}');
    __gm.state.select({ kind: 'asset', assetId: '${SPRITE}' });`);
  const logFrom = t.consoleLog.length;
  await sleep(4500);
  const inspected = await json('__gm.inspectorSpritePreview()');
  const thrown = t.consoleLog.slice(logFrom).filter((line) => /EXCEPTION|alphaMode/.test(line));
  const kept = await json('__gm.videos()');
  const inPreview = inspected && (await shownColor(inspected));
  check(
    'a sprite shown only in the inspector keeps its video playing there',
    thrown.length === 0 &&
      inspected?.animates === true &&
      kept.length === 1 &&
      kept[0].ready &&
      (inPreview === COLORS.green || inPreview === COLORS.blue),
    JSON.stringify({ thrown, inspected, kept, inPreview }),
  );

  await mutate(`
    const p = __gm.state.project;
    for (const holder of p.assets) if (holder.objects) holder.objects = holder.objects.filter((o) => o.id !== '${OBJECT}');
    p.assets = p.assets.filter((a) => a.id !== '${SPRITE}' && a.id !== ${JSON.stringify(assetId)});
    __gm.state.select(null);`);
}