// frontend\src\aiLabels.ts

export type AiLabelGroup =
  | 'people'
  | 'position'
  | 'body'
  | 'object'
  | 'clothing'
  | 'unknown'

const NO_POSITION_LABELS = new Set(['', 'keine'])

export const AI_POSITION_LABELS = [
  'keine',
  'missionary',
  'doggy',
  'doggystyle',
  'cowgirl',
  'reverse_cowgirl',
  'cunnilingus',
  'prone_bone',
  'standing',
  'standing_doggy',
  'spooning',
  'facesitting',
  'handjob',
  'blowjob',
  'boobjob',
  'toy_play',
  'fingering',
  '69',
] as const

export const AI_BODY_LABELS = [
  'anus',
  'ass',
  'breasts',
  'penis',
  'tongue',
  'pussy',
  'vulva',
  'buttocks',
] as const

export const AI_OBJECT_LABELS = [
  'blindfold',
  'buttplug',
  'collar',
  'dildo',
  'handcuffs',
  'shower',
  'strapon',
  'towel',
  'vibrator',
] as const

export const AI_CLOTHING_LABELS = [
  'bikini',
  'bra',
  'dress',
  'heels',
  'hotpants',
  'lingerie',
  'panties',
  'skirt',
  'stockings',
  'croptop',
] as const

export const AI_PERSON_LABELS = [
  'person',
  'person_unknown',
  'person_male',
  'person_female',
  'male_person',
  'female_person',
  'people_male',
  'people_female',
  'frau',
  'mann',
] as const

export const AI_LABEL_FALLBACKS: Record<string, string> = {
  vulva: 'Vagina',
  pussy: 'Vagina',
  penis: 'Penis',
  anus: 'Anus',
  ass: 'Hintern',
  buttocks: 'Hintern',
  breasts: 'Brüste',
  tongue: 'Zunge',

  blindfold: 'Augenbinde',
  buttplug: 'Buttplug',
  collar: 'Halsband',
  dildo: 'Dildo',
  handcuffs: 'Handschellen',
  shower: 'Dusche',
  strapon: 'Strapon',
  towel: 'Handtuch',
  vibrator: 'Vibrator',

  bikini: 'Bikini',
  bra: 'BH',
  dress: 'Kleid',
  heels: 'High Heels',
  hotpants: 'Hotpants',
  lingerie: 'Lingerie',
  panties: 'Slip',
  skirt: 'Rock',
  stockings: 'Strümpfe',
  croptop: 'Crop Top',

  keine: 'Keine',
  missionary: 'Missionary',
  doggy: 'Doggy',
  doggystyle: 'Doggy',
  cowgirl: 'Cowgirl',
  reverse_cowgirl: 'Reverse Cowgirl',
  cunnilingus: 'Cunnilingus',
  prone_bone: 'Prone Bone',
  standing: 'Stehend',
  standing_doggy: 'Standing Doggy',
  spooning: 'Spooning',
  facesitting: 'Facesitting',
  handjob: 'Handjob',
  blowjob: 'Blowjob',
  boobjob: 'Boobjob',
  toy_play: 'Toy Play',
  fingering: 'Fingering',
  '69': '69',

  person: 'Person',
  person_unknown: 'Person',
  person_male: 'Mann',
  person_female: 'Frau',
}

export const RATING_VALUE_LABELS: Record<string, string> = {
  stars: 'Sterne',
  score: 'Score',
  actionScore: 'Action',
  bestPosition: 'Top-Position',
  bestPositionRank: 'Positionsrang',
  bestClothing: 'Top-Kleidung',
  bestClothingRank: 'Kleidungsrang',
  positionScore: 'Position',
  clothingScore: 'Kleidung',
  durationScore: 'Dauer',
  strengthScore: 'Stärke',
  coverageScore: 'Abdeckung',
  contextScore: 'Kontext',
  varietyScore: 'Vielfalt',
  confidence: 'Konfidenz',
  probability: 'Wahrscheinlichkeit',
  nsfw: 'NSFW',
  adult: 'Adult',
  explicit: 'Explizit',
  explicitness: 'Explizitheit',
  nudity: 'Nacktheit',
  sexual: 'Sexuell',
  sexualActivity: 'Sexuelle Aktivität',
  visibility: 'Sichtbarkeit',
  quality: 'Qualität',
  reason: 'Begründung',
  summary: 'Zusammenfassung',
  label: 'Label',
  category: 'Kategorie',
  model: 'Modell',
  version: 'Version',
}

const POSITION_SET = new Set<string>(AI_POSITION_LABELS)
const BODY_SET = new Set<string>(AI_BODY_LABELS)
const OBJECT_SET = new Set<string>(AI_OBJECT_LABELS)
const CLOTHING_SET = new Set<string>(AI_CLOTHING_LABELS)
const PERSON_SET = new Set<string>(AI_PERSON_LABELS)

export function normalizeAiLabel(value: unknown): string {
  return String(value ?? '')
    .trim()
    .toLowerCase()
    .replace(/^detector:/, '')
    .replace(/^position:/, '')
    .replace(/^body:/, '')
    .replace(/^object:/, '')
    .replace(/^clothing:/, '')
}

export function titleCaseLabel(value: string): string {
  return value
    .replace(/[_-]+/g, ' ')
    .replace(/\s+/g, ' ')
    .trim()
    .replace(/\b\w/g, (m) => m.toUpperCase())
}

export function prettyAiLabel(value: unknown): string {
  const raw = String(value ?? '').trim()
  if (!raw) return ''

  const key = raw.toLowerCase()

  if (key.startsWith('position:')) {
    return prettyAiLabel(key.slice('position:'.length))
  }

  if (key.startsWith('object:')) {
    return prettyAiLabel(key.slice('object:'.length))
  }

  if (key.startsWith('clothing:')) {
    return prettyAiLabel(key.slice('clothing:'.length))
  }

  if (key.startsWith('body:')) {
    return prettyAiLabel(key.slice('body:'.length))
  }

  if (key.startsWith('detector:')) {
    return prettyAiLabel(key.slice('detector:'.length))
  }

  if (key.startsWith('combo:')) {
    const rest = key.slice('combo:'.length)
    return rest
      .split('+')
      .map((part) => prettyAiLabel(part))
      .filter(Boolean)
      .join(' + ')
  }

  const direct = AI_LABEL_FALLBACKS[key]
  if (direct) return direct

  return isAiLikeLabel(raw) ? titleCaseLabel(raw) : raw
}

export function aiLabelGroup(value: unknown): AiLabelGroup {
  const label = normalizeAiLabel(value)

  if (NO_POSITION_LABELS.has(label)) return 'unknown'
  if (PERSON_SET.has(label)) return 'people'
  if (POSITION_SET.has(label)) return 'position'
  if (BODY_SET.has(label)) return 'body'
  if (OBJECT_SET.has(label)) return 'object'
  if (CLOTHING_SET.has(label)) return 'clothing'

  return 'unknown'
}

export function isKnownFrontendPositionLabel(value: unknown): boolean {
  const label = normalizeAiLabel(value)
  return !NO_POSITION_LABELS.has(label) && POSITION_SET.has(label)
}

export function isKnownAiContentLabel(value: unknown): boolean {
  const group = aiLabelGroup(value)
  return (
    group === 'position' ||
    group === 'body' ||
    group === 'object' ||
    group === 'clothing'
  )
}

export function isPersonSegmentLabel(value: unknown): boolean {
  return PERSON_SET.has(normalizeAiLabel(value))
}

export function splitAiComboOrList(value: unknown): string[] {
  return String(value ?? '')
    .split(/[+,;|]+/g)
    .map((part) => part.trim())
    .filter(Boolean)
}

export function rawAiLabelParts(value: unknown): string[] {
  const raw = String(value ?? '').trim().toLowerCase()
  if (!raw) return []

  if (raw.startsWith('combo:')) {
    return raw
      .slice('combo:'.length)
      .split('+')
      .map((part) => part.trim())
      .filter(Boolean)
  }

  return [raw]
}

export function isAiLikeLabel(value: string): boolean {
  const s = value.trim()
  if (!s) return false

  return (
    s.toLowerCase() in AI_LABEL_FALLBACKS ||
    /^[a-z0-9]+(?:_[a-z0-9]+)+$/i.test(s) ||
    /^[a-z0-9]+(?:-[a-z0-9]+)+$/i.test(s)
  )
}

export function isNonPersonHighlightLabel(value: unknown): boolean {
  const parts = splitAiComboOrList(value)

  for (const part of parts) {
    const normalized = normalizeAiLabel(part)
    if (!normalized) continue

    if (!isPersonSegmentLabel(normalized)) {
      return true
    }
  }

  return false
}

export function segmentObjectHasNonPersonContext(
  obj: Record<string, unknown>
): boolean {
  const values: unknown[] = [
    obj.tags,
    obj.labels,
    obj.classes,
    obj.flags,
    obj.summary,
    obj.reason,
    obj.description,
    obj.text,
    obj.caption,
    obj.note,
  ]

  for (const value of values) {
    if (Array.isArray(value)) {
      if (value.some((item) => isNonPersonHighlightLabel(item))) {
        return true
      }
      continue
    }

    if (typeof value === 'string' && isNonPersonHighlightLabel(value)) {
      return true
    }
  }

  return false
}

export function isPersonSegmentObject(obj: Record<string, unknown>): boolean {
  const rawLabel =
    obj.label ??
    obj.title ??
    obj.category ??
    obj.type ??
    obj.kind ??
    obj.name ??
    ''

  if (!isPersonSegmentLabel(rawLabel)) {
    return false
  }

  if (segmentObjectHasNonPersonContext(obj)) {
    return false
  }

  return true
}

export function tagsFromAiLabel(
  value: unknown,
  opts?: {
    prefixPositions?: boolean
  }
): string[] {
  const out: string[] = []
  const prefixPositions = opts?.prefixPositions ?? true

  for (const part of rawAiLabelParts(value)) {
    const clean = part.trim()
    if (!clean) continue

    const normalized = normalizeAiLabel(clean)

    if (clean.startsWith('position:') || isKnownFrontendPositionLabel(normalized)) {
      const label = prettyAiLabel(clean)
      if (label) out.push(prefixPositions ? `Position: ${label}` : label)
      continue
    }

    if (
      clean.startsWith('body:') ||
      clean.startsWith('object:') ||
      clean.startsWith('clothing:') ||
      clean.startsWith('detector:')
    ) {
      const label = prettyAiLabel(clean)
      if (label) out.push(label)
      continue
    }

    const label = prettyAiLabel(clean)
    if (label) out.push(label)
  }

  return out
}

export function segmentTitleFromLabel(raw: string): string {
  const parts = rawAiLabelParts(raw)

  if (parts.length <= 1) {
    return prettyAiLabel(raw)
  }

  const positionPart = parts.find((part) => {
    const clean = normalizeAiLabel(part)
    return part.startsWith('position:') || isKnownFrontendPositionLabel(clean)
  })

  if (positionPart) return prettyAiLabel(positionPart)

  const objectPart = parts.find((part) => part.startsWith('object:'))
  if (objectPart) return prettyAiLabel(objectPart)

  const bodyPart = parts.find((part) => part.startsWith('body:'))
  if (bodyPart) return prettyAiLabel(bodyPart)

  const clothingPart = parts.find((part) => part.startsWith('clothing:'))
  if (clothingPart) return prettyAiLabel(clothingPart)

  return prettyAiLabel(parts[0])
}

export function normalizedPlainTagKey(tag: unknown): string {
  return String(tag ?? '')
    .trim()
    .toLowerCase()
    .replace(/^detector:/, '')
    .replace(/^position:/, '')
    .replace(/^body:/, '')
    .replace(/^object:/, '')
    .replace(/^clothing:/, '')
    .replace(/[_-]+/g, ' ')
    .replace(/\s+/g, ' ')
    .trim()
}

export function isDerivedFilterTag(tag: unknown): boolean {
  const key = normalizedPlainTagKey(tag)

  if (!key) return true

  if (/^[1-5]\s*sterne?$/.test(key)) return true
  if (/^[1-5]\s*stars?$/.test(key)) return true
  if (/^[1-5]\s*\/\s*5$/.test(key)) return true

  return [
    'high rating',
    'low rating',
    '4k',
    'full hd',
    'hd',
    'sd',
    'kurz',
    'lang',
  ].includes(key)
}