/** 海报 side：male=/hb-n 男方，female=/hb-nv 女方 */

export const POSTER_SIDES = [
  { key: 'male', route: '/hb-n', label: '男方', short: 'n' },
  { key: 'female', route: '/hb-nv', label: '女方', short: 'nv' },
]

export function resolvePosterSide(input) {
  const v = String(input || '').trim().toLowerCase()
  if (v === 'female' || v === 'nv' || v === 'f' || v === 'bride') return 'female'
  if (v === 'male' || v === 'n' || v === 'm' || v === 'groom') return 'male'
  return ''
}

function baseFields() {
  return {
    enabled: true,
    heroImg: '',
    title: '婚礼邀请函',
    footer: '—诚挚邀请 ♥ 恭请光临—',
    loadingEffect: 'redSeal',
    enterEffect: 'fadeUp',
    showInviteButton: true,
    inviteButtonText: '打开请柬',
    invitePath: '/',
  }
}

/** 男方默认文案 */
export function defaultMalePosterConfig() {
  return {
    ...baseFields(),
    sonLabel: '儿子：',
    sonName: '张浩强',
    daughterInLawLabel: '儿媳：',
    daughterInLawName: '刘佳怡',
    lines: [
      '各位亲朋好友',
      '吾家有喜 儿子结婚',
      '良辰已定 吉日待访',
      '兹定于2026年10月3日 星期日',
      '农历九月初八 中午11:08分',
      '为儿子儿媳举办结婚典礼',
      '敬备喜宴 诚邀您携家人光临',
      '地址：幸福大酒店二楼宴会厅',
      '张国栋 & 陈晓玲 夫 妇 敬邀',
    ],
  }
}

/** 女方默认文案 */
export function defaultFemalePosterConfig() {
  return {
    ...baseFields(),
    sonLabel: '女儿：',
    sonName: '刘佳怡',
    daughterInLawLabel: '女婿：',
    daughterInLawName: '张浩强',
    lines: [
      '各位亲朋好友',
      '吾家有喜 女儿出嫁',
      '良辰已定 吉日待访',
      '兹定于2026年10月3日 星期日',
      '农历九月初八 中午11:08分',
      '为女儿女婿举办结婚典礼',
      '敬备喜宴 诚邀您携家人光临',
      '地址：幸福大酒店二楼宴会厅',
      '刘建国 & 王秀兰 夫 妇 敬邀',
    ],
  }
}

/** @deprecated 兼容旧调用，等同男方默认 */
export function defaultPosterConfig() {
  return defaultMalePosterConfig()
}

export function defaultPosterBundle() {
  return {
    male: defaultMalePosterConfig(),
    female: defaultFemalePosterConfig(),
  }
}

export const LOADING_EFFECTS = [
  { value: 'fade', label: '淡入加载' },
  { value: 'redSeal', label: '红印囍字' },
  { value: 'goldShimmer', label: '金字微光' },
]

export const ENTER_EFFECTS = [
  { value: 'fadeUp', label: '上浮淡入' },
  { value: 'scaleIn', label: '缩放进入' },
  { value: 'curtain', label: '金幕拉开' },
]

/** 是否为旧版扁平配置（未分男女方） */
function isLegacyFlatPoster(raw) {
  if (!raw || typeof raw !== 'object') return false
  if (raw.male || raw.female) return false
  return 'title' in raw || 'lines' in raw || 'heroImg' in raw || 'sonName' in raw
}

export function normalizePosterConfig(raw, side = 'male') {
  const s = resolvePosterSide(side) || 'male'
  const base = s === 'female' ? defaultFemalePosterConfig() : defaultMalePosterConfig()
  const loaded = raw && typeof raw === 'object' ? raw : {}
  const lines = Array.isArray(loaded.lines)
    ? loaded.lines.map((l) => String(l ?? ''))
    : base.lines
  return {
    ...base,
    ...loaded,
    lines: lines.length ? lines : base.lines,
    enabled: loaded.enabled !== false,
    showInviteButton: loaded.showInviteButton !== false,
    loadingEffect: LOADING_EFFECTS.some((e) => e.value === loaded.loadingEffect)
      ? loaded.loadingEffect
      : base.loadingEffect,
    enterEffect: ENTER_EFFECTS.some((e) => e.value === loaded.enterEffect)
      ? loaded.enterEffect
      : base.enterEffect,
    invitePath: loaded.invitePath || '/',
    inviteButtonText: loaded.inviteButtonText || base.inviteButtonText,
  }
}

/** 归一化整包 { male, female }；兼容旧扁平数据迁入 male */
export function normalizePosterBundle(raw) {
  const loaded = raw && typeof raw === 'object' ? raw : {}
  if (isLegacyFlatPoster(loaded)) {
    return {
      male: normalizePosterConfig(loaded, 'male'),
      female: defaultFemalePosterConfig(),
    }
  }
  return {
    male: normalizePosterConfig(loaded.male, 'male'),
    female: normalizePosterConfig(loaded.female, 'female'),
  }
}

export function pickPosterSide(bundle, side) {
  const normalized = normalizePosterBundle(bundle)
  const s = resolvePosterSide(side) || 'male'
  return normalized[s]
}