import { test } from '@japa/runner'
import { fileStem, releaseIdentity, subjectRemainder } from '#lib/release/index'
import { looksLikeFilename, weakFileKey } from '#lib/headers/index'

test.group('release / fileStem', () => {
  test('reduces all files of a set to the same stem', ({ assert }) => {
    const names = [
      '1790546808_nicovideo_jp_watch_sm26679715.tar.zst',
      '1790546808_nicovideo_jp_watch_sm26679715.tar.zst.par2',
      '1790546808_nicovideo_jp_watch_sm26679715.tar.zst.vol03+04.par2',
    ]
    assert.deepEqual(new Set(names.map(fileStem)), new Set(['1790546808_nicovideo_jp_watch_sm26679715']))
  })

  test('handles rar, split and par2 volume naming', ({ assert }) => {
    assert.equal(fileStem('lJzuoIKA3T8xjzAD3vqtw0.part036.rar'), 'lJzuoIKA3T8xjzAD3vqtw0')
    assert.equal(fileStem('Some.Movie.2024.r07'), 'Some.Movie.2024')
    assert.equal(fileStem('Some.Movie.2024.mkv.001'), 'Some.Movie.2024')
    assert.equal(fileStem('Some.Movie.2024.2160p.WEB-DL.H.265.mkv'), 'Some.Movie.2024.2160p.WEB-DL.H.265')
    assert.equal(fileStem('Some.Movie.2024.H.264.nzb'), 'Some.Movie.2024.H.264')
    assert.equal(fileStem('Some.Movie.2024.vol127-128.par2'), 'Some.Movie.2024')
    assert.equal(fileStem('Some.Movie.2024.nfo'), 'Some.Movie.2024')
    assert.equal(fileStem('00-artist-album-web-2026.m3u'), '00-artist-album-web-2026')
    assert.equal(fileStem('f6dd6b156692a52b.bin'), 'f6dd6b156692a52b')
  })

  test('never reduces a name to nothing', ({ assert }) => {
    assert.equal(fileStem('.par2'), '.par2')
  })
})

test.group('release / subjectRemainder', () => {
  test('is empty when the subject only has counters, filename and size', ({ assert }) => {
    assert.equal(subjectRemainder('[1/4] - "x.tar.zst" yEnc 15411409'), '')
    assert.equal(subjectRemainder('. - [00/88] - "60SHkTQSvn5RZGExwju2.nzb" yEnc'), '')
  })

  test('keeps a release name written outside the quotes', ({ assert }) => {
    assert.equal(
      subjectRemainder('Some.Show.S01E02.1080p [03/40] - "abc.part02.rar" yEnc'),
      'Some Show S01E02 1080p'
    )
  })
})

test.group('release / releaseIdentity', () => {
  test('groups a par2 set with its archive by stem, per poster', ({ assert }) => {
    const base = { poster: 'p', weak: false }
    const a = releaseIdentity({ ...base, subject: '[1/4] - "x.tar.zst" yEnc 1', name: 'x.tar.zst' })!
    const b = releaseIdentity({ ...base, subject: '[3/4] - "x.tar.zst.vol01+02.par2" yEnc 2', name: 'x.tar.zst.vol01+02.par2' })!
    assert.equal(a.key, b.key)
    assert.equal(a.name, 'x')
    assert.equal(a.fileTotal, 4)
    const other = releaseIdentity({ ...base, poster: 'q', subject: '[1/4] - "x.tar.zst" yEnc 1', name: 'x.tar.zst' })!
    assert.notEqual(a.key, other.key)
  })

  test('a par2 index posted without [i/M] counter joins its release', ({ assert }) => {
    const base = { poster: 'nicovideo_archiver', weak: false }
    const archive = releaseIdentity({ ...base, subject: '[1/6] - "x.tar.zst" yEnc 105054576', name: 'x.tar.zst' })!
    const index = releaseIdentity({ ...base, subject: '"x.tar.zst.par2" yEnc 3100', name: 'x.tar.zst.par2' })!
    assert.equal(index.key, archive.key)
    assert.equal(archive.fileTotal, 6)
    assert.isUndefined(index.fileTotal)
  })

  test('uses the subject text when it names the release', ({ assert }) => {
    const base = { poster: 'p', weak: false }
    const a = releaseIdentity({ ...base, subject: 'My.Release [01/40] - "abc.part01.rar" yEnc', name: 'abc.part01.rar' })!
    const b = releaseIdentity({ ...base, subject: 'My.Release [40/40] - "abc.par2" yEnc', name: 'abc.par2' })!
    assert.equal(a.key, b.key)
    assert.equal(a.name, 'My Release')
  })

  test('obfuscated volumes group by stem regardless of the random poster', ({ assert }) => {
    const a = releaseIdentity({ poster: '3Uzx7TTSFpLzz@ngPost.com', subject: '"lJzu.part033.rar" yEnc', name: 'lJzu.part033.rar', weak: true })!
    const b = releaseIdentity({ poster: 'bGLd1oaXRdrK1@ngPost.com', subject: '"lJzu.part034.rar" yEnc', name: 'lJzu.part034.rar', weak: true })!
    assert.equal(a.key, b.key)
  })

  test('capitals and digits switching all over a token are random', async ({ assert }) => {
    const { looksRandom } = await import('#lib/release/index')
    assert.isTrue(looksRandom('51294P1CUKR2R35X'))
    assert.isTrue(looksRandom('51294P1CUKR2R35X.part01.rar'.replace(/\.part01\.rar$/, '')))
    assert.isFalse(looksRandom('COD4MW2REMASTERED'))
    assert.isFalse(looksRandom('BEATLES1964REMASTER'))
    assert.isFalse(looksRandom('HDTV1080P'))
  })

  test('random extensionless names cannot be grouped by name', ({ assert }) => {
    const name = '204b914a977e5f891590ff1099c7a8caf1a0be537bfa5bf7f3a8b1213231'
    assert.isNull(releaseIdentity({ poster: 'x', subject: `"${name}" yEnc`, name, weak: true }))
  })
})

test.group('subject / weakFileKey', () => {
  test('ignores random per-article names, keeps real filenames', ({ assert }) => {
    assert.isFalse(looksLikeFilename('204b914a977e5f891590ff1099c7a8caf1a0be537bfa5bf7f3a8b1213231'))
    assert.isTrue(looksLikeFilename('lJzuoIKA3T8xjzAD3vqtw0.part033.rar'))
    // Same file, different random names per article: same key.
    assert.equal(weakFileKey('aaaa1111', 5000, 7), weakFileKey('bbbb2222', 5000, 7))
    // Equal-sized volumes with real names: different keys.
    assert.notEqual(weakFileKey('x.part01.rar', 5000, 7), weakFileKey('x.part02.rar', 5000, 7))
    assert.notEqual(weakFileKey('aaaa1111', 5000, 7), weakFileKey('aaaa1111', 5001, 7))
  })
})

test.group('release / rarReleaseIdentity', () => {
  test('groups volumes by the shared top-level directory', async ({ assert }) => {
    const { rarReleaseIdentity } = await import('#lib/release/index')
    const first = rarReleaseIdentity([
      { name: 'LASZR_-_DYING_ALIVE-(PRO094)-WEB-2026-DIM/00-cover.jpg', size: 589382 },
      { name: 'LASZR_-_DYING_ALIVE-(PRO094)-WEB-2026-DIM/01-track.flac', size: 30_000_000 },
    ])!
    const later = rarReleaseIdentity([{ name: 'LASZR_-_DYING_ALIVE-(PRO094)-WEB-2026-DIM/03-track.flac', size: 29_000_000 }])!
    assert.equal(first.key, later.key)
    assert.equal(first.name, 'LASZR_-_DYING_ALIVE-(PRO094)-WEB-2026-DIM')
    assert.equal(first.source, 'rar')
  })

  test('without a directory, volumes of one file share its first entry', async ({ assert }) => {
    const { rarReleaseIdentity } = await import('#lib/release/index')
    const a = rarReleaseIdentity([{ name: 'Some.Show.S01E01.1080p.mkv', size: 3_000_000_000 }])!
    const b = rarReleaseIdentity([{ name: 'Some.Show.S01E01.1080p.mkv', size: 3_000_000_000 }])!
    assert.equal(a.key, b.key)
    assert.equal(a.name, 'Some.Show.S01E01.1080p')
    assert.isNull(rarReleaseIdentity([]))
  })
})

test.group('release / namesRelease', () => {
  test('random per-file tags and poster ids are not a release name', async ({ assert }) => {
    const { namesRelease, subjectRemainder, releaseIdentity } = await import('#lib/release/index')
    const subject = 'elys-de81bcabef5faf6a - [Nyh5Q07Y] "JkpNIFg7En50zU1U" yEnc'
    assert.isFalse(namesRelease(subjectRemainder(subject)))
    const a = releaseIdentity({ poster: 'elys', subject, name: 'JkpNIFg7En50zU1U', weak: false })!
    assert.equal(a.source, 'stem')
    assert.isTrue(namesRelease(subjectRemainder('Some.Show.S01E02.1080p [03/40] - "abc.part02.rar" yEnc')))
    assert.isTrue(namesRelease('My Release'))
  })
})

test.group('release / post id', () => {
  test('groups random-named files of one post by poster, post id and file count', async ({ assert }) => {
    const { releaseIdentity, isPostToken } = await import('#lib/release/index')
    const base = { poster: 'jW344UtC8R2bZEegrVLz@x', weak: false }
    const a = releaseIdentity({ ...base, subject: '83110629-n [10/18] - "eiae6fulpolas2adfts6o8643n3e6j6ct8d3219aau0jc33ol9r50tohncgr46evpl0dqoqktfb7k" yEnc', name: 'eiae6fulpolas2adfts6o8643n3e6j6ct8d3219aau0jc33ol9r50tohncgr46evpl0dqoqktfb7k' })!
    const b = releaseIdentity({ ...base, subject: '83110629-n [01/18] - "2ef0vm4kb618nv17kn0qsb0j1ofh7pgqtk5a3v5lkqqf1f7g6ed0" yEnc', name: '2ef0vm4kb618nv17kn0qsb0j1ofh7pgqtk5a3v5lkqqf1f7g6ed0' })!
    assert.equal(a.key, b.key)
    assert.equal(a.source, 'post')
    assert.equal(a.fileTotal, 18)
    const other = releaseIdentity({ ...base, subject: '83110630-n [01/18] - "x" yEnc', name: 'x' })!
    assert.notEqual(a.key, other.key)

    assert.isTrue(isPostToken('83110629 n'))
    assert.isFalse(isPostToken('PRiVATE'))
    assert.isFalse(isPostToken(''))
    // Without a counter there is nothing to bound the post: fall back to the stem.
    assert.equal(releaseIdentity({ ...base, subject: '83110629-n - "x.bin" yEnc', name: 'x.bin' })!.source, 'stem')
  })
})

test.group('release / par2 names', () => {
  test('names a season pack after what its episodes share', async ({ assert }) => {
    const { par2ReleaseName } = await import('#lib/release/index')
    const eps = Array.from({ length: 20 }, (_, i) =>
      `SEAL.Team.S03E${String(i + 1).padStart(2, '0')}.1080p.AMZN.WEB-DL.AAC2.0.H.265.DUAL-nitrato.mkv`)
    assert.equal(par2ReleaseName(eps), 'SEAL.Team.S03.1080p.AMZN.WEB-DL.AAC2.0.H.265.DUAL-nitrato')
    // Movie plus sample and nfo: the movie's (longest) name.
    assert.equal(
      par2ReleaseName(['Some.Movie.2024.1080p.BluRay.x264-GRP.mkv', 'Some.Movie.2024.1080p.BluRay.x264-GRP.nfo', 'sample.mkv']),
      'Some.Movie.2024.1080p.BluRay.x264-GRP'
    )
    // Numbered parts: the shared name without the part number.
    assert.equal(par2ReleaseName(['Album.Name-2024-GRP.part01.rar', 'Album.Name-2024-GRP.part02.rar']), 'Album.Name-2024-GRP')
    assert.equal(par2ReleaseName(['only.one.file.2024.mkv']), 'only.one.file.2024')
  })
  test('a random poster per file is no part of the key; a real poster is', async ({ assert }) => {
    const { randomPoster } = await import('#lib/release/identity')
    const ftd = '-Alight_Upon_the_Lake_(Live_at_the_Jazz_Showcase_Jun_1975)-WEB-2026-FTD'
    const a = releaseIdentity({ poster: 'N9vplIaavBCz@aCTVoAsk.JSE', subject: `[1/6] - "Yusef_Lateef${ftd}.par2" yEnc 1744`, name: `Yusef_Lateef${ftd}.par2`, weak: false })!
    const b = releaseIdentity({ poster: 'FVWWHku0fGAg@QfaTz0g0.RVH', subject: `[3/6] - "Yusef_Lateef${ftd}.part2.rar" yEnc 104857600`, name: `Yusef_Lateef${ftd}.part2.rar`, weak: false })!
    assert.equal(a.key, b.key)
    assert.isTrue(randomPoster('N9vplIaavBCz@aCTVoAsk.JSE'))
    assert.isFalse(randomPoster('Captain Salvo <Capt@Salvo.com>'))
    assert.isFalse(randomPoster('Poster49118 <Poster49118@generic.mail>'))
    assert.isFalse(randomPoster('w.merklein@freenet.de (muffin)'))
  })

  test('album tracks with unquoted names are one release per disc', async ({ assert }) => {
    const { parseSubject } = await import('#lib/headers/index')
    const id = (subject: string) => releaseIdentity({ poster: 'Hannah_Qe@hotmail.com (Spidey)', subject: subject.replace(/ \(\d+\/\d+\)$/, ''), name: parseSubject(subject)!.name, weak: false })!
    const album = 'A Strange Light from the East - Eastern Influenced Western Music (1965-72) - CD2'
    assert.equal(id(`${album} - 07 - Rascals - Sattva.mp3 (1/43)`).key, id(`${album} - 08 - Incredible String Band - Koeeoaddi There.mp3 (1/47)`).key)
  })

  test('more splits from the re-index: spaces in unquoted names, audio tracks, sizes before yEnc, posters with separators', async ({ assert }) => {
    const { parseSubject } = await import('#lib/headers/index')
    const { randomPoster } = await import('#lib/release/identity')
    // As the edge worker: the subject without its counter and with collapsed spaces, the name as parsed.
    const id = (poster: string, subject: string) => {
      const name = parseSubject(subject)!.name
      const base = subject.replace(/\(\d+\/\d+\)\s*$/, '').replace(/\s+/g, ' ').trim()
      return releaseIdentity({ poster, subject: base, name, weak: false })!
    }
    const makz = 'Makz@BlueRadiance.uni (makz)'
    assert.equal(id(makz, 'G:\\posting\\thegoodnudes\\lara_bath  15of19 larabath_2.5.jpg (1/1)').key, id(makz, 'G:\\posting\\thegoodnudes\\lara_bath  16of19 larabath_2.6.jpg (1/1)').key)
    const mara = 'Mara <guest@cox.net>'
    assert.equal(id(mara, 'RP - File 268 of 295 - yEnc "Elizabeth Peters - (Peabody 09) Seeing A Large Cat - D11.16-22.mp3" (1/3)').key, id(mara, 'RP - File 269 of 295 - yEnc "Elizabeth Peters - (Peabody 09) Seeing A Large Cat - D11.17-22.mp3" (1/3)').key)
    const mb = 'misterb@sure.com (MisterB)'
    assert.equal(id(mb, 'Herb Ernst@256 - NMR -[07/17] "Herb Ernst - Dreamflight II - 05 - The Light of Forever.mp3" - 8123 yEnc (1/9)').key, id(mb, 'Herb Ernst@256 - NMR -[08/17] "Herb Ernst - Dreamflight II - 06 - Other.mp3" - 9001 yEnc (1/9)').key)
    assert.isTrue(randomPoster('SOFZRw1-OTEd@EEFUbh.srG'))
    assert.isTrue(randomPoster('vMgGYlZB9ZcTNk8WxYFGV_OOW@x6YR.abc'))
    assert.isFalse(randomPoster('w.merklein@freenet.de (muffin)'))
  })

  test('image sets by their numbered name, digits kept; names without numbers name no set', ({ assert }) => {
    const silver = (n: string) => releaseIdentity({ poster: 'p', subject: `The excellent STIRILING SILVER - Always popular - "${n}" yEnc 320794 bytes`, name: n, weak: false })!
    assert.equal(silver('stp250x001.jpg').key, silver('stp250x002.jpg').key)
    assert.notEqual(silver('stp250x001.jpg').key, silver('stp305x001.jpg').key)
    const mint = (n: string) => releaseIdentity({ poster: 'Cert', subject: `I'm not a breath mint, but I am not all there either. [${n}" yEnc]`, name: n, weak: false })!
    assert.equal(mint('JimAndJoey Kindly Husband-to-Be.JPG').key, mint('Oops OnlyOneMore.JPG').key)
  })

  test("an image's set: suffixes that don't count the images go first", async ({ assert }) => {
    const { imageSet } = await import('#lib/release/identity')
    for (const [stem, set] of [
      ['stp250x001', 'stp250x'],
      ['cutie-071-032', 'cutie-071-'],
      ['katelg010_10', 'katelg'],
      ['kate112lg035_35', 'kate112lg'],
      ['!!hgrscans1097_2009', '!!hgrscans'],
      ['pj02kristina_24of40_1600', 'pj02kristina_'],
      ['keira_s04_l keira_s04_0040_l', 'keira_s04_l keira_s04_'],
      ['IMG_2676', 'IMG_'],
      ['2877-041', '2877-'],
      ['051 - White leather kate054001_1_1', '051 - White leather kate'],
      ['108 - Schoolwall kate108lg029_28', '108 - Schoolwall kate108lg'],
      ['kurozo-2006-7-26-15-21', ''],
      ['bwp2_037_5', 'bwp2_'],
      ['Set 008  10of63  new0464', 'Set 008  '],
      ['202/430  princess-079-058', ''],
      ['( 098 /500)  002 148', ''],
      ['New Folder (17)  sexypattycake_0903040445[1]', 'New Folder ('],
      ['092_081_2000x1500', '092_'],
      ['KP0027_197_00', 'KP'],
      ['01079-106-2048px', '01079-'],
      ['diana-050-052[1][1]', 'diana-050-'],
      ['sss-70556-3474182-23-10825418-pc', ''],
      ['Alena p 26663_alena-p-2-8323_123_39lo', ''],
      ['she has sensual legs 172 _ 172', 'she has sensual legs '],
      ['jamie.lee.curtis_the.tailor.of.panama_17_123_244lo', 'jamie.lee.curtis_the.tailor.of.panama_'],
      ['JimAndJoey Kindly Husband-to-Be', ''],
    ]) assert.equal(imageSet(stem), set, stem)
  })

  test("a set's number before the closing yEnc is no size", ({ assert }) => {
    const id = (subject: string, name: string) => releaseIdentity({ poster: 'p', subject, name, weak: false })!
    const destiny = (set: number, i: number) => {
      const name = `destiny-${String(set).padStart(3, '0')}-${String(i).padStart(3, '0')}.jpg`
      return id(`Newstar Destiny I set ${set} [${i} of 60] "${name}" yEnc`, name)
    }
    assert.equal(destiny(1, 1).key, destiny(1, 2).key)
    assert.notEqual(destiny(1, 1).key, destiny(63, 34).key)
    assert.equal(destiny(63, 34).name, 'Newstar Destiny I set 63')
  })

  test('other quoted text and text separators name the release', ({ assert }) => {
    const id = (subject: string, name: string) => releaseIdentity({ poster: 'p', subject, name, weak: false })!
    const cc = (name: string, n: string) =>
      id(`>>> CREATIVE COMMONS NZB <<< "${name} " - File 1 of 9: "creative_commons_nzb_${n}.rar" yEnc`, `creative_commons_nzb_${n}.rar`)
    assert.notEqual(cc('0190 alarm 5.0', '0190_alarm_5.0_').key, cc('portable irfanview 4.22', 'portable_irfanview_4.22').key)
    const vlad = (dir: string, total: number, n: string) =>
      id(`Posting & deleting, read 0 file "E:\\VladModels\\y038_Irina\\${dir}" Day 5/6 [01/${total}] - ${n} yEnc`, n)
    assert.equal(vlad('185', 77, 'P8250001.JPG').source, 'subject')
    assert.notEqual(vlad('185', 77, 'P8250001.JPG').key, vlad('234', 77, 'P5300085.JPG').key)
  })

  test('an image without words around it is keyed by its set', ({ assert }) => {
    const id = (name: string, counter: string) => releaseIdentity({ poster: 'p', subject: `##[ "${name}" (${counter})`, name, weak: false })!
    assert.equal(id('diana-040-001.jpg', '01/68').key, id('diana-040-002.jpg', '02/68').key)
    assert.notEqual(id('diana-040-001.jpg', '01/68').key, id('diana-407-081.jpg', '81/82').key)
  })

  test('an unquoted file name is no file counter', ({ assert }) => {
    const shy = (name: string) => releaseIdentity({ poster: 'p', subject: `${name} hardcore SHYLA STYLEZ & SHY LOVE`, name, weak: false })!
    assert.equal(shy('shyla-shy-09-0195.jpg').key, shy('shyla-shy-09-0766.jpg').key)
    assert.isUndefined(shy('shyla-shy-09-0195.jpg').fileTotal)
  })

  test('dates are no file counters', async ({ assert }) => {
    const { counterTotal } = await import('#lib/release/identity')
    assert.isUndefined(counterTotal('Avira AntiVir Rescue System 08-29-2011.rar'))
    assert.isUndefined(counterTotal('Android Apps and Games Pack 27-02-2011.rar'))
    assert.isUndefined(counterTotal('Supernova-clubbin (slamfm)-cable-18-08-2012-1king.rar'))
    assert.equal(counterTotal('Some.Album [03/12] - "x.mp3"'), 12)
    assert.equal(counterTotal('File 07390 of 19411 "x.epub"'), 19411)
  })

  test('split parts with two-digit numbers share a stem', ({ assert }) => {
    assert.equal(fileStem('Admiral.EP05.2008.720p.Rus.HDCLUB.mkv.21'), fileStem('Admiral.EP05.2008.720p.Rus.HDCLUB.mkv.22'))
    assert.equal(fileStem('Naslednica_po_prjamoy_DVDRip.avi.05'), 'Naslednica_po_prjamoy_DVDRip')
  })

  test('image sets: sizes in brackets and one-word set names', ({ assert }) => {
    const id = (subject: string, name: string) => releaseIdentity({ poster: 'p', subject, name, weak: false })!
    assert.equal(id('Aletta Ocean - "100628-035.jpg" yEnc [347K]', '100628-035.jpg').key, id('Aletta Ocean - "100628-036.jpg" yEnc [298K]', '100628-036.jpg').key)
    const corie = id('Corie - "2877-041.jpg" yEnc [290K]', '2877-041.jpg')
    assert.equal(corie.key, id('Corie - "2877-042.jpg" yEnc [301K]', '2877-042.jpg').key)
    assert.equal(corie.name, 'Corie')
  })

  test('numbered items of a set stay one release under the set name (a course, not a poster tag)', ({ assert }) => {
    const id = (subject: string, name: string) => releaseIdentity({ poster: 'Poster49118 <Poster49118@generic.mail>', subject, name, weak: false })!
    const a = id('ai-engineer-complete [401/465] - "003 Defining Tools with JSON Schema.mp4" yEnc', '003 Defining Tools with JSON Schema.mp4')
    const b = id('ai-engineer-complete [422/465] - "006 ai-lesson-4-5-web-search-tools.zip" yEnc', '006 ai-lesson-4-5-web-search-tools.zip')
    assert.equal(a.key, b.key)
    assert.equal(a.name, 'ai engineer complete')
    // Karaoke discs: a disc code before the track number.
    const sc = (track: string) => releaseIdentity({ poster: 'p', subject: `Spotlight - 83xx's [16/19] - "${track}.zip" yEnc`, name: `${track}.zip`, weak: false })!
    assert.equal(sc('SC8367-12 - Wynette, Tammy - Singing My Song').key, sc('SC8367-13 - Jones, George - He Stopped Loving Her Today').key)
  })

  test("a poster's constant tag doesn't make one release of all their uploads", ({ assert }) => {
    const id = (poster: string, subject: string, name: string) => releaseIdentity({ poster, subject, name, weak: false })!
    // [KiLL…] tag on every upload: each album by its stem, its nfo included.
    const kill = 'www.ggb.6x.to <darkness@earth.de>'
    const a = id(kill, '[KiLL.dA.FuCkIn.EaStErRaBbIt]---- (03/10) "Cephalgy.-.Weisses.Fleisch.2003[[g.6x.to]].r00" yEnc', 'Cephalgy.-.Weisses.Fleisch.2003[[g.6x.to]].r00')
    const aNfo = id(kill, '[KiLL.dA.FuCkIn.EaStErRaBbIt]---- (01/10) "Cephalgy.-.Weisses.Fleisch.2003[[g.6x.to]].nfo" yEnc', 'Cephalgy.-.Weisses.Fleisch.2003[[g.6x.to]].nfo')
    const b = id(kill, '[KiLL.dA.FuCkIn.EaStErRaBbIt]---- (03/10) "Shnarph.-.Lautlos.2008[[g.6x.to]].r00" yEnc', 'Shnarph.-.Lautlos.2008[[g.6x.to]].r00')
    assert.equal(a.key, aNfo.key)
    assert.notEqual(a.key, b.key)
    assert.equal(a.source, 'stem')
    // A tag taken for a post id: "(PowBeertje80 Posted)" with the same [i/M] on every album.
    const pow = (album: string) => id('pow', `(PowBeertje80 Posted) [01/026] - "${album}.part01.rar" yEnc`, `${album}.part01.rar`)
    assert.notEqual(pow('Bravo Hits Vol.14 2CD -1996-').key, pow('Bravo Hits Vol.33 2CD -2001-').key)
  })

  test('the text outside the quotes still groups when it describes the files, or is a per-post id', ({ assert }) => {
    const id = (subject: string, name: string) => releaseIdentity({ poster: 'p', subject, name, weak: false })!
    // A word in common ("ketchup"): one album of many track files.
    const t1 = id('!!!!! FTA www.ftaclub.net BodyCrew Presents VA-Ketchup_Dance2008 !!!!! [01/28] - "fta-01-a_track-2008.mp3" yEnc', 'fta-01-a_track-2008.mp3')
    const t2 = id('!!!!! FTA www.ftaclub.net BodyCrew Presents VA-Ketchup_Dance2008 !!!!! [02/28] - "fta-02-coyote-ketchup_mix.mp3" yEnc', 'fta-02-coyote-ketchup_mix.mp3')
    assert.equal(t1.key, t2.key)
    assert.equal(t1.source, 'subject')
    // A number in common ("35"), and a per-post id ("FTD769997").
    assert.equal(id('[Audiofiles_DIE_ZEIT_35] [01/24] - "35_China_dl.mp3" yEnc', '35_China_dl.mp3').key, id('[Audiofiles_DIE_ZEIT_35] [02/24] - "35_Bamberg_dl.mp3" yEnc', '35_Bamberg_dl.mp3').key)
    assert.equal(id('FTD769997 [01/23] - "Prison.Break.S04E02.720p.part01.rar" yEnc', 'Prison.Break.S04E02.720p.part01.rar').key, id('FTD769997 [23/23] - "Prison.Break.S04E02.720p.part.par2" yEnc', 'Prison.Break.S04E02.720p.part.par2').key)
    // A scene name with abbreviated file names, and a generically named sidecar.
    const scene = id('Some.Movie.2008.DVDRip.XviD-GRP [01/40] - "grp-sm.part01.rar" yEnc', 'grp-sm.part01.rar')
    assert.equal(scene.name, 'Some Movie 2008 DVDRip XviD GRP')
    assert.equal(id('Better.Jpeg.v2.0-DOA [02/10] - "file_id.diz" yEnc', 'file_id.diz').key, id('Better.Jpeg.v2.0-DOA [03/10] - "doa-bj20.zip" yEnc', 'doa-bj20.zip').key)
  })
  test('image sets: counters written out, sizes and the set by its counter or name', ({ assert }) => {
    const id = (subject: string, name: string, poster = 'p') => releaseIdentity({ poster, subject, name, weak: false })!
    // "File 027 of 132": one set, not a release per image; another set of the same title apart by its total.
    const a = id('What about this? - File 027 of 132: "DSC_027.jpg" yEnc', 'DSC_027.jpg')
    const b = id('What about this? - File 028 of 132: "DSC_028.jpg" yEnc', 'DSC_028.jpg')
    const other = id('What about this? - File 001 of 90: "DSC_001.jpg" yEnc', 'DSC_001.jpg')
    assert.equal(a.key, b.key)
    assert.notEqual(a.key, other.key)
    assert.equal(a.name, 'What about this?')
    // No counter: the image's name up to its last number.
    const k1 = id('Proud to be a poster "Kitchen Hottie 1 set233-76-lg.jpg" yEnc', 'Kitchen Hottie 1 set233-76-lg.jpg')
    const k2 = id('Proud to be a poster "Kitchen Hottie 1 set233-77-lg.jpg" yEnc', 'Kitchen Hottie 1 set233-77-lg.jpg')
    const k3 = id('Proud to be a poster "Office Chair set12-01-lg.jpg" yEnc', 'Office Chair set12-01-lg.jpg')
    assert.equal(k1.key, k2.key)
    assert.notEqual(k1.key, k3.key)
    // Per-file sizes and other counter forms don't split a post.
    assert.equal(subjectRemainder('Minutemen (001/104) "x.cbr" - 76.88 MB - yEnc'), 'Minutemen')
    assert.equal(subjectRemainder('Babes P A R T 3 ("Charlotte 03 16.jpg" 0097-1574 156.87 kB-273.03 MB) yEnc'), 'Babes P A R T 3')
    assert.equal(subjectRemainder('*MaryKate* - OfficeChair [23of61] - "OfficeChair023.jpg" yEnc 187924 bytes'), '*MaryKate* OfficeChair')
    assert.equal(subjectRemainder('Adventure Comics [1948-12] - "x.rar"'), 'Adventure Comics [1948 12]')
  })

  test('documents are a release each; audio tracks stay with their album', ({ assert }) => {
    const id = (subject: string, name: string) => releaseIdentity({ poster: 'p', subject, name, weak: false })!
    const c1 = id('cw-horror&mystery [10/28] "Vampirella Magazine 061.cbr" yEnc', 'Vampirella Magazine 061.cbr')
    const c2 = id('cw-horror&mystery [11/28] "Mystery Tales 12.cbr" yEnc', 'Mystery Tales 12.cbr')
    assert.notEqual(c1.key, c2.key)
    assert.equal(c2.name, 'Mystery Tales 12')
    const t1 = id('(Geisterjäger John Sinclair Hörspiele Vol. 2) [04/59] - "042 - 011 - Der unheimliche Bogenschütze.mp3 - by DeckaR" yEnc', '042 - 011 - Der unheimliche Bogenschütze.mp3 - by DeckaR')
    const t2 = id('(Geisterjäger John Sinclair Hörspiele Vol. 2) [34/59] - "072 - 027 - Die Teufelsuhr.MP3 - by DeckaR" yEnc', '072 - 027 - Die Teufelsuhr.MP3 - by DeckaR')
    const par2 = id('(Geisterjäger John Sinclair Hörspiele Vol. 2) [59/59] - "Hörspiele Vol. 2.par2" yEnc', 'Hörspiele Vol. 2.par2')
    assert.equal(t1.key, t2.key)
    assert.equal(t1.key, par2.key)
    // A cover without words around it joins its stem's archive.
    assert.equal(id('[2/6] - "x.jpg" yEnc', 'x.jpg').key, id('[1/6] - "x.part01.rar" yEnc', 'x.part01.rar').key)
  })
})