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index.mjs
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import { player } from './player.mjs';
import { humanTime, serializeSrt, lookForSpeaker, setSubtitleSpeaker, reassignSpeakerIndices, splitText } from './subtitles.mjs';
import { alertDialog, joinDialog, splitDialog, editDialog, tweakTimesDialog } from './dialogs.mjs';
import { computeStats } from './stats.mjs';
const IS_EDITING = ['127.0.0.1', 'localhost'].includes(location.hostname);
function updateFile(name, ext, content) {
if (!IS_EDITING) return;
return fetch(
`http://${location.hostname}:9091/${name}.${ext}`,
{
method: 'POST',
mode: 'cors',
body: content,
}
);
}
function parseHash() {
if (!location.hash) return ['', 0];
let [name, time] = location.hash.slice(1).split('/');
time = parseFloat(time);
if (isNaN(time)) time = 0;
return [name, time];
}
function updateHash(name, time = 0) {
location.hash = `${name}/${time}`;
}
export function main() {
const listEl = document.getElementById('list');
const uiEl = document.getElementById('ui');
const searchEl = document.getElementById('search');
const timeEl = document.getElementById('time');
const durationEl = document.getElementById('duration');
const togglePlayEl = document.getElementById('toggle-play');
const toMenuEl = document.getElementById('to-menu');
const rew15El = document.getElementById('rew-15');
const ffw15El = document.getElementById('ffw-15');
const progressEl = document.getElementById('progress');
const contentEl = document.getElementById('content');
let subEls, audio, subtitles, metadata;
let currentSubIndex = -1;
{
const name = parseHash()[0];
if (name) run(name);
}
const highlightSub = (idx) => {
subEls.forEach((subEl, i) => subEl.classList.toggle('highlight', i === idx));
subEls[idx]?.scrollIntoView({ behavior: 'auto', block: 'center', inline: 'center' });
}
const onClickContentEl = (el) => {
const idx = subEls.indexOf(el);
const sub = subtitles[idx];
if (!sub) return;
currentSubIndex = idx;
audio.currentTime = sub.start;
highlightSub(currentSubIndex);
if (audio.paused) audio.play();
togglePlayEl.focus();
}
contentEl.addEventListener('click', (ev) => onClickContentEl(ev.target));
async function run(name) {
const saveSubs = () => updateFile(name, 'srt', serializeSrt(subtitles));
const saveMeta = () => updateFile(name, 'json', JSON.stringify(metadata, null, 4));
const saveBoth = () => Promise.all([saveSubs(), saveMeta()]);
listEl.style.display = 'none';
searchEl.style.display = 'none';
uiEl.style.display = 'block';
if (audio) audio.pause();
const p = (await player(name));
({ audio, subtitles, metadata } = p);
//audio.playbackRate = 0.8; // optional
//audio.playbackRate = 1.3; // optional
const colorizeSub = (divEl) => {
const index = Number(divEl.dataset.srtIndex);
const speaker = lookForSpeaker(metadata, index);
if (speaker) {
const color = metadata.speakers[speaker].color;
divEl.style.borderLeft = `4px solid ${color}`;
} else {
divEl.style.borderLeft = ``;
}
}
const updateList = () => {
contentEl.innerHTML = '';
subEls = [];
for (const { srtIndex, content } of subtitles) {
const divEl = document.createElement('div');
subEls.push(divEl);
divEl.appendChild(document.createTextNode(content));
divEl.dataset.srtIndex = srtIndex;
colorizeSub(divEl);
contentEl.appendChild(divEl);
}
}
updateList();
const onDuration = () => {
const d = audio.duration;
durationEl.innerHTML = humanTime(d);
progressEl.max = Math.ceil(d);
}
const move = (deltaSecs) => {
audio.currentTime = audio.currentTime + deltaSecs;
if (audio.paused) audio.play();
togglePlayEl.focus();
}
if (audio.duration) onDuration();
audio.addEventListener('loadedmetadata', onDuration);
audio.addEventListener('timeupdate', () => {
const t = audio.currentTime;
updateHash(name, t.toFixed(1));
const ti = Math.round(t);
const ts = humanTime(ti);
if (timeEl.innerHTML != ts) timeEl.innerHTML = ts;
if (ti != progressEl.value) progressEl.value = ti;
const sub = subtitles[currentSubIndex];
if (!sub || t < sub.start || t > sub.end) {
const newIndex = subtitles.findIndex((s) => s && t >= s.start && t <= s.end);
if (newIndex !== -1) {
currentSubIndex = newIndex;
highlightSub(currentSubIndex);
}
}
});
progressEl.addEventListener('change', () => {
audio.currentTime = progressEl.value;
togglePlayEl.focus();
});
togglePlayEl.addEventListener('click', () => {
audio.paused ? audio.play() : audio.pause();
});
togglePlayEl.addEventListener('keydown', async (ev) => {
const sub = subtitles[currentSubIndex];
let deltaSecs = 0;
let deltaIndex = 0;
if (ev.key === 'ArrowLeft') deltaSecs = -15;
else if (ev.key === 'ArrowRight') deltaSecs = 15;
else if (ev.key === 'ArrowUp') deltaIndex = -1;
else if (ev.key === 'ArrowDown') deltaIndex = 1;
else if (IS_EDITING && sub && ['j', 's', 'e', 't', 'x', 'f', '1', '2', '3', '4', '5', '6', '7', '8', '9', '§'].includes(ev.key)) {
if (ev.key === 'j') {
audio.pause();
const mode = await joinDialog();
if (mode === '') { return togglePlayEl.focus();
} else if (mode === 'with previous') {
const prevSub = subtitles[currentSubIndex - 1];
sub.start = prevSub.start;
sub.content = prevSub.content + ' ' + sub.content;
subtitles.splice(currentSubIndex - 1, 1);
--currentSubIndex;
} else if (mode === 'with next') {
const nextSub = subtitles[currentSubIndex + 1];
sub.end = nextSub.end;
sub.content = sub.content + ' ' + nextSub.content;
subtitles.splice(currentSubIndex + 1, 1);
}
const decreaseFrom = currentSubIndex;
reassignSpeakerIndices(metadata, (idx) => idx > decreaseFrom ? idx - 1 : idx);
updateList();
saveBoth();
} else if (ev.key === 's') {
const sub = subtitles[currentSubIndex];
if (!sub) return togglePlayEl.focus();
audio.pause();
// preview
const ratios = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9];
for (const ratio of ratios) {
try {
const [a, b] = splitText(sub.content, ratio);
console.log(`${ratio}`);
console.log(` [${a}]`);
console.log(` [${b}]`);
} catch (_) {}
}
const result = await splitDialog(ratios);
if (result === '') return togglePlayEl.focus();
const ratio = parseFloat(result);
let content0, content1;
try {
[content0, content1] = splitText(sub.content, ratio);
} catch (err) {
return alertDialog(err.message || err);
}
const tCut = sub.start + ratio * (sub.end - sub.start);
const nextSub = {
srtIndex: currentSubIndex + 1,
start: tCut,
end: sub.end,
content: content1,
}
sub.end = tCut;
sub.content = content0;
subtitles.splice(currentSubIndex + 1, 0, nextSub);
const increaseFrom = currentSubIndex;
reassignSpeakerIndices(metadata, (idx) => idx > increaseFrom ? idx + 1 : idx);
updateList();
saveBoth();
} else if (ev.key === 'e') {
audio.pause();
const content = await editDialog(sub.content);
if (!content) return togglePlayEl.focus();
sub.content = content;
updateList();
saveSubs();
} else if (ev.key === 't') {
audio.pause();
await tweakTimesDialog(subtitles, metadata, currentSubIndex, audio);
saveSubs();
} else if (ev.key === 'x') {
if (currentSubIndex === -1) return togglePlayEl.focus();
subtitles.splice(currentSubIndex, 1);
reassignSpeakerIndices(metadata, (idx) => idx >= currentSubIndex ? idx - 1 : idx);
updateList();
saveBoth();
} else if (ev.key === 'f') {
if (currentSubIndex < 1) return togglePlayEl.focus();
const prevSub = subtitles[currentSubIndex - 1];
const currSub = subtitles[currentSubIndex];
const newSub = {
srtIndex: currentSubIndex,
start: prevSub.end,
end: currSub.start,
content: 'TODO',
};
subtitles.splice(currentSubIndex, 0, newSub);
reassignSpeakerIndices(metadata, (idx) => idx >= currentSubIndex ? idx + 1 : idx);
updateList();
saveBoth();
} else if (['1', '2', '3', '4', '5', '6', '7', '8', '9', '§'].includes(ev.key)) {
if (currentSubIndex === -1) return togglePlayEl.focus();
const speaker = metadata.bindings[Number(ev.key) - 1];
setSubtitleSpeaker(metadata, currentSubIndex + 1, speaker);
colorizeSub(subEls[currentSubIndex]);
saveMeta();
}
}
if (deltaSecs || deltaIndex) {
ev.preventDefault();
ev.stopPropagation();
if (deltaSecs) {
move(deltaSecs);
} else {
const el = subEls[currentSubIndex + deltaIndex];
if (el) onClickContentEl(el);
}
}
togglePlayEl.focus();
});
rew15El.addEventListener('click', () => move(-15));
ffw15El.addEventListener('click', () => move( 15));
toMenuEl.addEventListener('click', () => location.href = '');
const t = parseHash()[1];
if (t) audio.currentTime = t;
audio.play();
togglePlayEl.focus();
}
return run;
}