Files
usenet-indexer/lib/nzb/build.ts
T
Daan MeijerandClaude Opus 5.5 be8a3d4580 Spotnet import, header backfill, staging and counter grouping, faster search
Spotnet (CONCEPT D29):
- Index free.pt fully and import spots with their descriptions, categories
  and NZBs; a spot renames its release, since Spotnet names are more
  trustworthy than names derived from subjects.
- Find passwords in spot descriptions too, and tell "needs a password we
  have" from "needs a password we don't have".

Content inspection:
- List the contents of 7z (.7z.001) archives, SFV sets, nicovideo uploads
  and other archive-like files; mark yEncBin .bin containers as encrypted.
- Take real names from yEnc headers for randomly named files, and merge
  uploads that were split across posts.

Storage (D31, D32):
- Store segment lists zstd-compressed behind the FileStore accessor.
- group:backfill indexes older headers at low priority and pauses when
  the NVMe or HDD part of the database gets too large.

Grouping (D35, D36):
- Lone header segments wait in staged_segments until a second segment of
  their file arrives, which drops the per-article junk binaries.
- Counter grouping joins random-subject uploads by poster, [i/M] counter,
  part count and day.

Search and maintenance (D33, D34):
- A trigram-indexed search_text column, smaller indexes, estimated stats.
- Passes that clean up nonsense names; weekly index maintenance; GC budgets
  per kind.
- Web UI: grey out stale results while a search runs and cancel superseded
  requests. Count only up to 1,000 matches for the page, which made filter
  clicks take seconds (Newznab keeps the 10,000 cap).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-03 19:59:23 +02:00

52 lines
1.8 KiB
TypeScript

import { create } from 'xmlbuilder2'
import type { Segment } from './segments.js'
export interface NzbFile {
/** Name the downloader should use; the real name when it is known. */
name: string
poster: string
/** Posting time in milliseconds. */
date: number
groups: string[]
segments: Segment[]
}
export interface NzbOptions {
/** Shown by downloaders as the job name. */
title?: string
/** Archive password, when known. */
password?: string
}
/**
* Builds an NZB 1.1 document (newzbin DTD). The subject follows the common
* `"name" yEnc (1/N)` form, which downloaders use to name the file.
*/
export function buildNzb(files: NzbFile[], options: NzbOptions = {}): string {
const root = create({ version: '1.0', encoding: 'UTF-8' })
.dtd({ pubID: '-//newzBin//DTD NZB 1.1//EN', sysID: 'http://www.newzbin.com/DTD/nzb/nzb-1.1.dtd' })
.ele('nzb', { xmlns: 'http://www.newzbin.com/DTD/2003/nzb' })
if (options.title || options.password) {
const head = root.ele('head')
if (options.title) head.ele('meta', { type: 'name' }).txt(options.title)
if (options.password) head.ele('meta', { type: 'password' }).txt(options.password)
}
for (const file of files) {
const sorted = [...file.segments].sort((a, b) => a.number - b.number)
const element = root.ele('file', {
poster: file.poster,
date: String(Math.floor(file.date / 1000)),
subject: `"${file.name}" yEnc (1/${sorted.length})`,
})
const groups = element.ele('groups')
for (const group of file.groups) groups.ele('group').txt(group)
const segments = element.ele('segments')
for (const segment of sorted) {
segments.ele('segment', { bytes: String(segment.size), number: String(segment.number) }).txt(segment.id)
}
}
return root.end({ prettyPrint: true })
}