feat: DSL 磁力聚合 — 搜索/解析/预览/投递 + cilisousuo 源 + 中英双语 + Docker 部署

2026-10-16 18:53:45 +08:00
commit d6999104bf
64 changed files with 16524 additions and 0 deletions
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+import { XMLParser } from 'fast-xml-parser'
+import { DEFAULT_TRACKERS } from '../torrent'
+import { DEFAULT_UA, httpText } from '../http'
+import type { ProviderContext, SearchProvider, SearchResult } from './types'
+
+const SIZE_UNITS: Record<string, number> = {
+  b: 1,
+  kb: 1024,
+  kib: 1024,
+  mb: 1024 ** 2,
+  mib: 1024 ** 2,
+  gb: 1024 ** 3,
+  gib: 1024 ** 3,
+  tb: 1024 ** 4,
+  tib: 1024 ** 4
+}
+
+/** "1.23 GiB" / "456 MB" → 字节数 */
+function parseSize(input: unknown): number {
+  if (typeof input === 'number') return input
+  const text = String(input || '').trim()
+  const m = text.match(/^([\d.]+)\s*([a-zA-Z]+)?$/)
+  if (!m) return 0
+  const value = Number(m[1]) || 0
+  const unit = (m[2] || 'b').toLowerCase()
+  return Math.round(value * (SIZE_UNITS[unit] ?? 1))
+}
+
+function nyaaBase() {
+  return (process.env.NYAA_BASE || 'https://nyaa.si').replace(/\/+$/, '')
+}
+
+function asArray<T>(value: T | T[] | undefined): T[] {
+  if (value === undefined || value === null) return []
+  return Array.isArray(value) ? value : [value]
+}
+
+function pickString(value: unknown): string {
+  if (value === undefined || value === null) return ''
+  if (typeof value === 'object' && '#text' in (value as Record<string, unknown>)) {
+    return String((value as Record<string, unknown>)['#text'] ?? '')
+  }
+  return String(value)
+}
+
+export const nyaaProvider: SearchProvider = {
+  id: 'nyaa',
+  label: 'Nyaa',
+  homepage: 'https://nyaa.si',
+
+  async search(query: string, ctx: ProviderContext): Promise<SearchResult[]> {
+    // c=0_0 全部分类；f=0 只过滤可信发布者之外的全部结果
+    const url = `${nyaaBase()}/?page=rss&q=${encodeURIComponent(query)}&c=0_0&f=0`
+    const xml = await httpText(url, {
+      proxy: ctx.proxy,
+      timeoutMs: ctx.timeoutMs,
+      headers: { accept: 'application/rss+xml, application/xml, text/xml', 'user-agent': DEFAULT_UA }
+    })
+
+    const parser = new XMLParser({ removeNSPrefix: true, trimValues: true, parseTagValue: false })
+    const doc = parser.parse(xml) as Record<string, any>
+    const items = asArray(doc?.rss?.channel?.item)
+
+    return items
+      .map((item: Record<string, any>) => {
+        const infoHash = pickString(item.infoHash).toLowerCase()
+        if (!/^[a-f0-9]{40}$/.test(infoHash)) return null
+        const name = pickString(item.title) || infoHash
+        const torrentUrl = pickString(item.guid) || pickString(item.link)
+        const category = pickString(item.category)
+        const pubDate = pickString(item.pubDate)
+        const added = pubDate ? new Date(pubDate) : null
+
+        return {
+          infoHash,
+          name,
+          size: parseSize(item.size),
+          seeders: Number(pickString(item.seeders)) || 0,
+          leechers: Number(pickString(item.leechers)) || 0,
+          fileCount: null,
+          category: category || null,
+          source: 'nyaa',
+          sourceLabel: 'Nyaa',
+          sourceId: pickString(item.link) || null,
+          sourceUrl: torrentUrl || null,
+          addedAt: added && !Number.isNaN(added.getTime()) ? added : null,
+          magnet: `magnet:?xt=urn:btih:${infoHash}&dn=${encodeURIComponent(name)}${DEFAULT_TRACKERS.map(
+            (t) => `&tr=${encodeURIComponent(t)}`
+          ).join('')}`
+        } satisfies SearchResult
+      })
+      .filter((item): item is SearchResult => item !== null)
+  }
+}