/** 海报 side：1=男方(/hb-n)，2=女方(/hb-nv) */

export const POSTER_SIDES = [
  { key: 1, keyStr: '1', route: '/hb-n', label: '男方', short: 'n' },
  { key: 2, keyStr: '2', route: '/hb-nv', label: '女方', short: 'nv' },
]

export const POSTER_TEMPLATES = [
  { value: 'classic', label: '经典竖版', desc: '顶图 + 正文逐行出现' },
  { value: 'split', label: '左图右文', desc: '竖排书法 + 右侧宴席信息' },
]

/** 手机端布局：仅影响窄屏；PC 仍按模板本身版式 */
export const MOBILE_LAYOUTS = [
  { value: 'auto', label: '自动布局', desc: '按屏幕宽度自动切换（当前默认）' },
  { value: 'portrait', label: '竖向展示', desc: '手机端强制上下排布' },
  { value: 'landscape', label: '横屏展示', desc: '手机端强制左右分栏' },
]

/** 解析为 1 | 2，无法识别返回 0 */
export function resolvePosterSide(input) {
  if (input === 1 || input === '1') return 1
  if (input === 2 || input === '2') return 2
  const v = String(input || '').trim().toLowerCase()
  if (v === 'female' || v === 'nv' || v === 'f' || v === 'bride') return 2
  if (v === 'male' || v === 'n' || v === 'm' || v === 'groom') return 1
  return 0
}

export function sideKey(side) {
  const s = resolvePosterSide(side) || 1
  return String(s)
}

function baseFields(side) {
  return {
    side: resolvePosterSide(side) || 1,
    template: 'classic',
    mobileLayout: 'auto',
    enabled: true,
    heroImg: '',
    /** 二维码中心图；空则显示圆圈大囍 */
    qrCenterImg: '',
    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: '/',
    // split 模板字段
    verticalSlogan: '吾家有喜',
    subSlogan1: '佳偶天成',
    subSlogan2: '百年好合',
    greeting: '尊敬的各位亲朋好友',
    groomName: '',
    brideName: '',
    dateText: '2026年10月3日 星期日',
    lunarText: '农历九月初八',
    venueText: '幸福大酒店二楼宴会厅',
    loveFooter: 'Love you',
  }
}

/** 男方(1) 默认 */
export function defaultSide1PosterConfig() {
  return {
    ...baseFields(1),
    side: 1,
    sonLabel: '儿子：',
    sonName: '张浩强',
    daughterInLawLabel: '儿媳：',
    daughterInLawName: '刘佳怡',
    groomName: '张浩强',
    brideName: '刘佳怡',
    verticalSlogan: '吾家有喜',
    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(2) 默认 */
export function defaultSide2PosterConfig() {
  return {
    ...baseFields(2),
    side: 2,
    sonLabel: '女儿：',
    sonName: '刘佳怡',
    daughterInLawLabel: '女婿：',
    daughterInLawName: '张浩强',
    groomName: '张浩强',
    brideName: '刘佳怡',
    verticalSlogan: '小女出阁',
    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',
    ],
  }
}

export function defaultMalePosterConfig() {
  return defaultSide1PosterConfig()
}
export function defaultFemalePosterConfig() {
  return defaultSide2PosterConfig()
}
export function defaultPosterConfig() {
  return defaultSide1PosterConfig()
}

export function defaultPosterBundle() {
  return {
    '1': defaultSide1PosterConfig(),
    '2': defaultSide2PosterConfig(),
  }
}

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' },
]

function isLegacyFlatPoster(raw) {
  if (!raw || typeof raw !== 'object') return false
  if (raw['1'] || raw['2'] || raw[1] || raw[2] || raw.male || raw.female) return false
  return 'title' in raw || 'lines' in raw || 'heroImg' in raw || 'sonName' in raw || 'template' in raw
}

function pickSideSource(loaded, side) {
  const k = sideKey(side)
  if (loaded[k] && typeof loaded[k] === 'object') return loaded[k]
  if (side === 1 && loaded.male && typeof loaded.male === 'object') return loaded.male
  if (side === 2 && loaded.female && typeof loaded.female === 'object') return loaded.female
  return null
}

export function normalizePosterConfig(raw, side = 1) {
  const s = resolvePosterSide(side) || 1
  const base = s === 2 ? defaultSide2PosterConfig() : defaultSide1PosterConfig()
  const loaded = raw && typeof raw === 'object' ? raw : {}
  const lines = Array.isArray(loaded.lines)
    ? loaded.lines.map((l) => String(l ?? ''))
    : base.lines
  const template = POSTER_TEMPLATES.some((t) => t.value === loaded.template)
    ? loaded.template
    : base.template
  const mobileLayout = MOBILE_LAYOUTS.some((t) => t.value === loaded.mobileLayout)
    ? loaded.mobileLayout
    : base.mobileLayout

  const groomName = loaded.groomName || loaded.sonName || base.groomName
  const brideName = loaded.brideName || loaded.daughterInLawName || base.brideName

  return {
    ...base,
    ...loaded,
    side: s,
    template,
    mobileLayout,
    lines: lines.length ? lines : base.lines,
    groomName,
    brideName,
    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,
    qrCenterImg: loaded.qrCenterImg || '',
    verticalSlogan: loaded.verticalSlogan || base.verticalSlogan,
    subSlogan1: loaded.subSlogan1 || base.subSlogan1,
    subSlogan2: loaded.subSlogan2 || base.subSlogan2,
    greeting: loaded.greeting || base.greeting,
    dateText: loaded.dateText || base.dateText,
    lunarText: loaded.lunarText || base.lunarText,
    venueText: loaded.venueText || base.venueText,
    loveFooter: loaded.loveFooter || base.loveFooter,
  }
}

/** 归一化为 { 1, 2 }；兼容旧 male/female 与扁平数据 */
export function normalizePosterBundle(raw) {
  const loaded = raw && typeof raw === 'object' ? raw : {}
  if (isLegacyFlatPoster(loaded)) {
    return {
      '1': normalizePosterConfig(loaded, 1),
      '2': defaultSide2PosterConfig(),
    }
  }
  return {
    '1': normalizePosterConfig(pickSideSource(loaded, 1) || {}, 1),
    '2': normalizePosterConfig(pickSideSource(loaded, 2) || {}, 2),
  }
}

export function pickPosterSide(bundle, side) {
  const normalized = normalizePosterBundle(bundle)
  const s = sideKey(side)
  return normalized[s]
}