437 lines
16 KiB
JavaScript
437 lines
16 KiB
JavaScript
// Usenet Indexer web interface. No framework; all Usenet-derived text is
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// rendered with textContent, never as HTML.
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const $ = (selector) => document.querySelector(selector)
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const FILTERS = ['readable', 'complete', 'hide_encrypted', 'par2_only']
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const SOURCE_LABELS = {
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stem: 'Filename',
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subject: 'Subject',
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post: 'Post id',
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par2: 'par2 contents',
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rar: 'RAR headers',
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'weak-stem': 'Obfuscated filename',
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nzb: 'Posted NZB',
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spot: 'Spotnet',
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}
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const state = {
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q: '',
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sort: 'newest',
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source: '',
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poster: '',
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readable: false,
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complete: false,
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hide_encrypted: false,
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par2_only: false,
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page: 1,
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release: null,
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}
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let requestId = 0
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// --- Formatting ------------------------------------------------------------
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function formatSize(bytes) {
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if (!bytes) return '–'
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const units = ['B', 'KB', 'MB', 'GB', 'TB']
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let value = bytes
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let unit = 0
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while (value >= 1000 && unit < units.length - 1) {
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value /= 1000
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unit++
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}
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return `${value >= 100 || unit === 0 ? Math.round(value) : value.toFixed(1)} ${units[unit]}`
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}
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const number = new Intl.NumberFormat()
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function formatAge(date) {
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if (!date) return ''
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const seconds = (Date.now() - new Date(date).getTime()) / 1000
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if (seconds < 90) return 'just now'
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const steps = [
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[60, 'minute'],
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[3600, 'hour'],
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[86400, 'day'],
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[2592000, 'month'],
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[31536000, 'year'],
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]
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let [size, name] = steps[0]
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for (const step of steps) if (seconds >= step[0]) [size, name] = step
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const n = Math.floor(seconds / size)
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return `${n} ${name}${n === 1 ? '' : 's'} ago`
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}
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function el(tag, props = {}, ...children) {
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const node = document.createElement(tag)
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for (const [key, value] of Object.entries(props)) {
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if (value === undefined || value === null || value === false) continue
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if (key === 'class') node.className = value
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else if (key === 'text') node.textContent = value
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else if (key.startsWith('on')) node.addEventListener(key.slice(2), value)
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else node.setAttribute(key, value === true ? '' : value)
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}
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for (const child of children.flat()) {
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if (child === null || child === undefined || child === false) continue
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node.append(child instanceof Node ? child : document.createTextNode(String(child)))
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}
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return node
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}
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function badge(text, tone = '', title) {
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return el('span', { class: `badge${tone ? ` badge-${tone}` : ''}`, text, title })
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}
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// --- URL state -------------------------------------------------------------
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function readUrl() {
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const params = new URLSearchParams(location.search)
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state.q = params.get('q') ?? ''
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state.sort = params.get('sort') ?? 'newest'
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state.source = params.get('source') ?? ''
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state.poster = params.get('poster') ?? ''
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for (const f of FILTERS) state[f] = params.get(f) === '1'
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state.release = params.get('release') ? Number(params.get('release')) : null
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}
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function writeUrl(push = false) {
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const params = new URLSearchParams()
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if (state.q) params.set('q', state.q)
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if (state.sort !== 'newest') params.set('sort', state.sort)
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if (state.source) params.set('source', state.source)
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if (state.poster) params.set('poster', state.poster)
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for (const f of FILTERS) if (state[f]) params.set(f, '1')
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if (state.release) params.set('release', String(state.release))
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const url = `${location.pathname}${params.size ? `?${params}` : ''}`
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history[push ? 'pushState' : 'replaceState'](null, '', url)
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}
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function syncControls() {
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$('#q').value = state.q
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$('#sort').value = state.sort
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$('#source').value = state.source
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for (const f of FILTERS) {
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document.querySelector(`[data-filter="${f}"]`).setAttribute('aria-pressed', String(state[f]))
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}
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$('#poster-filter').hidden = !state.poster
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$('#poster-filter-label').textContent = `Poster: ${state.poster}`
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}
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// --- API -------------------------------------------------------------------
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async function api(path) {
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const response = await fetch(path, { headers: { accept: 'application/json' } })
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if (!response.ok) throw new Error(`${response.status} ${response.statusText}`)
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return response.json()
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}
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function searchParams(page) {
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const params = new URLSearchParams({ sort: state.sort, page: String(page), per_page: '50' })
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if (state.q) params.set('q', state.q)
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if (state.source) params.set('source', state.source)
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if (state.poster) params.set('poster', state.poster)
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for (const f of FILTERS) if (state[f]) params.set(f, '1')
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return params
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}
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// --- Stats -----------------------------------------------------------------
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async function loadStats() {
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try {
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const stats = await api('/api/v1/stats')
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const readable = stats.releases ? Math.round((100 * stats.readableReleases) / stats.releases) : 0
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const items = [
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['Releases', number.format(stats.releases)],
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['Readable', `${readable}%`],
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['Files', number.format(stats.files)],
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['Size', formatSize(stats.size)],
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['Indexed', formatAge(stats.lastIndexedAt) || '–'],
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]
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$('#stats').replaceChildren(...items.map(([dt, dd]) => el('div', {}, el('dt', { text: dt }), el('dd', { text: dd }))))
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} catch {
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// Stats are decoration; the page works without them.
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}
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}
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// --- Results ---------------------------------------------------------------
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function releaseRow(release) {
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const row = $('#row-template').content.firstElementChild.cloneNode(true)
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row.dataset.id = release.id
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if (release.id === state.release) row.classList.add('selected')
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const name = row.querySelector('.release-name')
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name.textContent = release.name
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if (!release.readable) name.classList.add('obfuscated')
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const meta = [
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formatAge(release.postedAt),
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release.poster ? release.poster.replace(/\s*<.*>$/, '') : 'obfuscated poster',
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release.groups?.length ? release.groups[0] + (release.groups.length > 1 ? ` +${release.groups.length - 1}` : '') : '',
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].filter(Boolean)
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row.querySelector('.release-meta').textContent = meta.join(' · ')
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const badges = row.querySelector('.badges')
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if (release.par2Only) badges.append(badge('par2 only', 'warn', 'Only the par2 files arrived; the data they describe is missing'))
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if (release.container === 'nzbe') badges.append(badge('Encrypted NZB', 'bad', 'An encrypted NZB container: unusable without its key'))
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else if (release.container === 'rclone') badges.append(badge('Encrypted (rclone)', 'bad', 'rclone crypt: names and contents encrypted, unusable without the key'))
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else if (release.encrypted) badges.append(badge('Password', 'bad', 'Password-protected archive'))
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const files = `${release.fileCount} ${release.fileCount === 1 ? 'file' : 'files'}`
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if (release.complete) badges.append(badge(files, 'good', 'Complete'))
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else if (release.fileTotal) badges.append(badge(`${release.fileCount}/${release.fileTotal}`, 'warn', 'Files present / announced'))
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else if (release.listedFiles) {
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badges.append(badge(`${release.listedPresent}/${release.listedFiles} listed`, 'warn', 'Files the par2 set lists: present / total'))
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} else badges.append(badge(files))
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if (release.source && release.source !== 'stem' && release.source !== 'subject') {
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badges.append(badge(SOURCE_LABELS[release.source] ?? release.source, 'accent', 'How this release was recognised'))
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}
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row.querySelector('.release-size').textContent = formatSize(release.size)
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const nzb = row.querySelector('.nzb')
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nzb.href = `/api/v1/releases/${release.id}/nzb`
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row.querySelector('.release-main').addEventListener('click', () => openRelease(release.id, true))
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return row
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}
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async function loadResults({ append = false } = {}) {
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const id = ++requestId
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if (!append) state.page = 1
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$('#more').hidden = true
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if (!append) $('#summary').textContent = 'Searching…'
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try {
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const result = await api(`/api/v1/releases?${searchParams(state.page)}`)
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if (id !== requestId) return // a newer search superseded this one
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const rows = result.releases.map(releaseRow)
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if (append) $('#list').append(...rows)
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else $('#list').replaceChildren(...rows)
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const shown = $('#list').children.length
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$('#summary').textContent =
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result.total === 0 ? '' : `${number.format(result.total)} ${result.total === 1 ? 'release' : 'releases'}` +
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(shown < result.total ? ` · showing ${number.format(shown)}` : '')
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$('#empty').hidden = result.total !== 0
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$('#more').hidden = shown >= result.total
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} catch (error) {
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if (id !== requestId) return
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$('#summary').textContent = `Search failed: ${error.message}`
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}
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}
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let debounce
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function scheduleSearch() {
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clearTimeout(debounce)
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debounce = setTimeout(() => {
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writeUrl()
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loadResults()
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}, 220)
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}
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// --- Detail drawer ---------------------------------------------------------
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function fact(label, value) {
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if (value === null || value === undefined || value === '') return null
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return el('div', {}, el('dt', { text: label }), el('dd', {}, value))
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}
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function section(title, note, content) {
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return [el('h3', { class: 'section-title' }, title, note ? el('small', { text: note }) : null), content]
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}
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function renderDetail(release) {
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$('#detail-name').textContent = release.name
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$('#detail-source').textContent = `Recognised by ${SOURCE_LABELS[release.source] ?? release.source ?? 'filename'}`
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const actions = el(
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'div',
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{ class: 'actions' },
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el('a', { class: 'button button-primary', href: `/api/v1/releases/${release.id}/nzb` },
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el('span', { text: 'Download NZB' })),
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el('button', {
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class: 'button',
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type: 'button',
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text: 'Copy name',
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onclick: async (event) => {
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await navigator.clipboard?.writeText(release.name)
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event.target.textContent = 'Copied'
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setTimeout(() => (event.target.textContent = 'Copy name'), 1200)
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},
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})
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)
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const poster = release.poster
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? el('button', {
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class: 'link-button',
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type: 'button',
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text: release.poster.replace(/\s*<.*>$/, ''),
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title: 'Show releases by this poster',
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onclick: () => {
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state.poster = release.poster
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closeRelease()
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syncControls()
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writeUrl(true)
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loadResults()
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},
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})
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: 'Random per article (obfuscated)'
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const listedPresent = release.par2Files.filter((f) => f.present).length
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const facts = el(
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'dl',
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{ class: 'facts' },
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fact('Size', formatSize(release.size)),
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fact('Files', release.fileTotal ? `${release.fileCount} of ${release.fileTotal}` : `${release.fileCount} posted`),
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fact('par2 lists', release.par2Files.length ? `${listedPresent} of ${release.par2Files.length} present` : null),
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fact('Posted', release.postedAt ? `${new Date(release.postedAt).toLocaleString()} (${formatAge(release.postedAt)})` : null),
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fact('Poster', poster),
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fact('Groups', release.groups?.join(', '))
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)
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const notices = []
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if (release.container === 'nzbe') {
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notices.push(el('div', { class: 'notice notice-bad', text: 'Encrypted NZB container ("nzbe"): an encrypted download index for others, unreadable without its key.' }))
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} else if (release.container === 'rclone') {
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notices.push(el('div', { class: 'notice notice-bad', text: 'rclone crypt: file names and contents are encrypted with a password and salt that are not part of the post.' }))
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} else if (release.encrypted) {
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notices.push(el('div', { class: 'notice notice-bad', text: 'Password-protected: the archive needs a password that is not part of the post.' }))
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}
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if (release.pending.binaries > 0) {
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const pct = release.pending.partsTotal ? Math.round((100 * release.pending.partsHave) / release.pending.partsTotal) : 0
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notices.push(
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el('div', { class: 'notice notice-warn' },
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el('div', { style: 'flex:1' },
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`${release.pending.binaries} more ${release.pending.binaries === 1 ? 'file is' : 'files are'} still arriving (${pct}% of their parts seen).`,
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el('div', { class: 'progress' }, el('span', { style: `width:${pct}%` }))))
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)
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}
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const files = el('table', { class: 'file-table' },
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el('tbody', {}, release.files.map((f) =>
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el('tr', {},
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el('td', { class: 'name' }, f.name,
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f.realName && f.realName !== f.postedName ? el('span', { class: 'posted', text: `posted as ${f.postedName}` }) : null),
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el('td', { class: 'num', text: formatSize(f.size) }),
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el('td', { class: 'num', text: `${f.parts} ${f.parts === 1 ? 'part' : 'parts'}` })))))
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const par2 = release.par2Files.length
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? el('table', { class: 'file-table' },
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el('tbody', {}, release.par2Files.map((f) =>
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el('tr', {},
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el('td', { class: `state ${f.present ? 'ok' : 'missing'}`, text: f.present ? '✓' : '·', title: f.present ? 'Present' : 'Not seen yet' }),
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el('td', { class: 'name', text: f.name }),
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el('td', { class: 'num', text: formatSize(f.size) })))))
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: null
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const contents = release.contents.length
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? el('table', { class: 'file-table' },
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el('tbody', {}, release.contents.map((entry) =>
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el('tr', {},
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el('td', { class: 'name', text: entry.name + (entry.directory ? '/' : '') }),
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el('td', { class: 'num', text: entry.size === null ? '' : formatSize(entry.size) }),
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el('td', { class: 'state', text: entry.encrypted ? '🔒' : '', title: entry.encrypted ? 'Encrypted' : undefined })))))
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: null
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$('#detail').replaceChildren(
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actions,
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...notices,
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facts,
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...section('Files', `${release.files.length} posted`, files),
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...(par2 ? section('par2 file list', `${listedPresent} of ${release.par2Files.length} present`, par2) : []),
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...(contents ? section('Archive contents', `${release.contents.length} entries`, contents) : [])
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)
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}
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async function openRelease(id, push = false) {
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state.release = id
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writeUrl(push)
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document.querySelectorAll('.release.selected').forEach((r) => r.classList.remove('selected'))
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document.querySelector(`.release[data-id="${id}"]`)?.classList.add('selected')
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$('#drawer').hidden = false
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$('#scrim').hidden = false
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$('#detail-name').textContent = ''
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$('#detail-source').textContent = ''
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$('#detail').replaceChildren(...Array.from({ length: 6 }, () => el('div', { class: 'skeleton' })))
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$('#close').focus()
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try {
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renderDetail(await api(`/api/v1/releases/${id}`))
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} catch (error) {
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$('#detail').replaceChildren(el('p', { class: 'empty', text: `Could not load this release (${error.message}).` }))
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}
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}
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function closeRelease(push = false) {
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if (!state.release) return
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const id = state.release
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state.release = null
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$('#drawer').hidden = true
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$('#scrim').hidden = true
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writeUrl(push)
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document.querySelector(`.release[data-id="${id}"] .release-main`)?.focus()
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}
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// --- Wiring ----------------------------------------------------------------
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$('#q').addEventListener('input', (event) => {
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state.q = event.target.value.trim()
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scheduleSearch()
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})
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$('#sort').addEventListener('change', (event) => {
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state.sort = event.target.value
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writeUrl()
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loadResults()
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})
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$('#source').addEventListener('change', (event) => {
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state.source = event.target.value
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writeUrl()
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loadResults()
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})
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for (const button of document.querySelectorAll('[data-filter]')) {
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button.addEventListener('click', () => {
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const f = button.dataset.filter
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state[f] = !state[f]
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button.setAttribute('aria-pressed', String(state[f]))
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writeUrl()
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loadResults()
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})
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}
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$('#poster-clear').addEventListener('click', () => {
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state.poster = ''
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syncControls()
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writeUrl()
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loadResults()
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})
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$('#more').addEventListener('click', () => {
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state.page++
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loadResults({ append: true })
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})
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$('#close').addEventListener('click', () => closeRelease(true))
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$('#scrim').addEventListener('click', () => closeRelease(true))
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document.addEventListener('keydown', (event) => {
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if (event.key === 'Escape') closeRelease(true)
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if (event.key === '/' && document.activeElement !== $('#q')) {
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event.preventDefault()
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$('#q').focus()
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$('#q').select()
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}
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})
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window.addEventListener('popstate', () => {
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const previous = { ...state }
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readUrl()
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syncControls()
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const searchChanged = ['q', 'sort', 'source', 'poster', ...FILTERS].some((k) => previous[k] !== state[k])
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if (searchChanged) loadResults()
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if (state.release && state.release !== previous.release) openRelease(state.release)
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if (!state.release && previous.release) {
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$('#drawer').hidden = true
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$('#scrim').hidden = true
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}
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})
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readUrl()
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syncControls()
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loadStats()
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loadResults()
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if (state.release) openRelease(state.release)
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