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泰额版/Food Labeling Management App UniApp/src/utils/labelPreview/printInputOffset.ts 12.1 KB
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  /**
   * 与 Web 管理端 labelFormDatePreview 一致：templateProductDefaults 中日期/时间/时长存 JSON
   * `{"unit":"Days","value":"2"}`，预览与打印时按 BaseTime 解析为 config.text。
   */
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  import type { SystemLabelTemplate, SystemTemplateElementBase } from '../print/types/printer'
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  const OFFSET_UNITS = new Set([
    'Minutes',
    'Hours',
    'Days',
    'Weeks',
    'Months (30 Day)',
    'Years',
  ])
  
  export function applyOffsetToDate (base: Date, amount: number, unit: string): Date {
    const d = new Date(base.getTime())
    const u = String(unit ?? '').trim()
    switch (u) {
      case 'Minutes':
        d.setMinutes(d.getMinutes() + amount)
        break
      case 'Hours':
        d.setHours(d.getHours() + amount)
        break
      case 'Days':
        d.setDate(d.getDate() + amount)
        break
      case 'Weeks':
        d.setDate(d.getDate() + amount * 7)
        break
      case 'Months (30 Day)':
        d.setDate(d.getDate() + amount * 30)
        break
      case 'Years':
        d.setFullYear(d.getFullYear() + amount)
        break
      default:
        d.setDate(d.getDate() + amount)
    }
    return d
  }
  
  function formatDateByPreset (format: string, date: Date): string {
    const yyyy = String(date.getFullYear())
    const yy = yyyy.slice(-2)
    const mm = String(date.getMonth() + 1).padStart(2, '0')
    const dd = String(date.getDate()).padStart(2, '0')
    const hh = String(date.getHours()).padStart(2, '0')
    const min = String(date.getMinutes()).padStart(2, '0')
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    const monthLong = date.toLocaleString('en-US', { month: 'long' }).toUpperCase()
    const dayLong = date.toLocaleString('en-US', { weekday: 'long' }).toUpperCase()
    const dayShort = date.toLocaleString('en-US', { weekday: 'short' }).toUpperCase()
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    switch (format) {
      case 'DD/MM/YYYY':
        return `${dd}/${mm}/${yyyy}`
      case 'MM/DD/YYYY':
        return `${mm}/${dd}/${yyyy}`
      case 'DD/MM/YY':
        return `${dd}/${mm}/${yy}`
      case 'MM/DD/YY':
        return `${mm}/${dd}/${yy}`
      case 'MM/YY':
        return `${mm}/${yy}`
      case 'MM/DD':
        return `${mm}/${dd}`
      case 'MM':
        return mm
      case 'DD':
        return dd
      case 'YY':
        return yy
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      case 'FULLY DAY(WEDNESDAY)':
        return dayLong
      case 'DAY (WED)':
        return dayShort
      case 'MONTH (DECEMBER)':
        return monthLong
      case 'YEAR (2025)':
        return yyyy
      case 'DD MONTH YEAR (25 DECEMBER 2025)':
        return `${dd} ${monthLong} ${yyyy}`
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      case 'YYYY-MM-DD':
        return `${yyyy}-${mm}-${dd}`
      case 'YYYY-MM-DD HH:mm':
        return `${yyyy}-${mm}-${dd} ${hh}:${min}`
      case 'HH:mm':
        return `${hh}:${min}`
      default:
        return String(format || '')
          .replace(/YYYY/g, yyyy)
          .replace(/YY/g, yy)
          .replace(/MM/g, mm)
          .replace(/DD/g, dd)
          .replace(/HH/g, hh)
          .replace(/mm/g, min)
    }
  }
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  /** 已算好的日期/时间展示串（非 format 预设名、非 JSON 偏移） */
  export function isLikelyResolvedDateTimeLiteral (raw: string | null | undefined): boolean {
    const t = String(raw ?? '').trim()
    if (!t || t.startsWith('{')) return false
    if (OFFSET_UNITS.has(t)) return false
    if (/^\d{4}-\d{2}-\d{2}/.test(t)) return true
    if (/^\d{4}-\d{2}-\d{2}\s+\d{1,2}:\d{2}/.test(t)) return true
    if (/^\d{1,2}\/\d{1,2}\/\d{2,4}/.test(t)) return true
    if (/^\d{1,2}:\d{2}(:\d{2})?$/.test(t)) return true
    return false
  }
  
  function applyElementPrefix (cfg: Record<string, unknown>, body: string): string {
    const prefix = String(cfg.prefix ?? cfg.Prefix ?? '')
    if (!prefix) return body
    if (body.startsWith(prefix)) return body
    return `${prefix}${body}`
  }
  
  function normalizeOffsetAmount (valueRaw: string): number | null {
    const t = String(valueRaw ?? '').trim()
    if (t === '') return 0
    const n = Number(t)
    return Number.isFinite(n) ? n : null
  }
  
  function dateFormatPatternForElement (
    el: SystemTemplateElementBase,
    cfg: Record<string, unknown>,
  ): string {
    const type = String(el.type || '').toUpperCase()
    if (type === 'TIME') return 'HH:mm'
    const it = String(cfg.inputType ?? cfg.InputType ?? '').toLowerCase()
    const raw =
      (typeof cfg.format === 'string' && cfg.format.trim()
        ? cfg.format
        : typeof cfg.Format === 'string' && cfg.Format.trim()
          ? cfg.Format
          : it === 'datetime'
            ? 'YYYY-MM-DD HH:mm'
            : 'DD/MM/YYYY') || 'DD/MM/YYYY'
    if (isLikelyResolvedDateTimeLiteral(raw) || OFFSET_UNITS.has(raw)) {
      return it === 'datetime' ? 'YYYY-MM-DD HH:mm' : 'DD/MM/YYYY'
    }
    return raw
  }
  
  function readOffsetFromElementConfig (
    el: SystemTemplateElementBase,
  ): { amount: number; unit: string } | null {
    const type = String(el.type || '').toUpperCase()
    const cfg = (el.config || {}) as Record<string, unknown>
    if (type === 'DURATION') {
      const unit = String(cfg.format ?? cfg.Format ?? 'Days').trim() || 'Days'
      const u = OFFSET_UNITS.has(unit) ? unit : 'Days'
      const rawV =
        cfg.durationValue ??
        cfg.value ??
        cfg.offsetDays ??
        cfg.DurationValue ??
        cfg.Value ??
        cfg.OffsetDays
      const val = Number(rawV)
      return { amount: Number.isFinite(val) ? val : 0, unit: u }
    }
    const od = cfg.offsetDays ?? cfg.OffsetDays
    if (od != null && String(od).trim() !== '') {
      const n = Number(od)
      if (Number.isFinite(n)) return { amount: n, unit: 'Days' }
    }
    const fmt = String(cfg.format ?? cfg.Format ?? '').trim()
    if (fmt && OFFSET_UNITS.has(fmt)) {
      const rawV = cfg.durationValue ?? cfg.value ?? cfg.DurationValue ?? cfg.Value ?? 0
      const val = Number(rawV)
      return { amount: Number.isFinite(val) ? val : 0, unit: fmt }
    }
    return null
  }
  
  function resolveFromOffsetAmount (
    el: SystemTemplateElementBase,
    amount: number,
    unit: string,
    base: Date,
  ): string {
    const type = String(el.type || '').toUpperCase()
    const cfg = (el.config || {}) as Record<string, unknown>
    const d = applyOffsetToDate(base, amount, unit)
    if (type === 'DATE') {
      return applyElementPrefix(cfg, formatDateByPreset(dateFormatPatternForElement(el, cfg), d))
    }
    if (type === 'TIME') {
      return applyElementPrefix(cfg, formatDateByPreset('HH:mm', d))
    }
    return applyElementPrefix(cfg, `${amount} ${unit}`.trim())
  }
  
  /**
   * 画布预览 / 原生打印：按基准时刻解析 DATE/TIME/DURATION，忽略 AUTO_DB 上已过期的 text/format。
   */
  export function resolveElementDateTimeDisplay (
    el: SystemTemplateElementBase,
    base: Date = new Date(),
  ): string | null {
    const type = String(el.type || '').toUpperCase()
    if (type !== 'DATE' && type !== 'TIME' && type !== 'DURATION') return null
  
    const cfg = (el.config || {}) as Record<string, unknown>
    const vst = String(el.valueSourceType ?? '').toUpperCase()
    const inputType = String(cfg.inputType ?? cfg.InputType ?? '').toLowerCase()
    const rawText = String(cfg.text ?? cfg.Text ?? '').trim()
  
    const fromOffsetJson = (raw: string): string | null => {
      const p = tryParsePrintInputOffsetStored(raw)
      if (!p) return null
      const amount = normalizeOffsetAmount(p.value)
      if (amount === null) return null
      return resolveFromOffsetAmount(el, amount, p.unit || 'Days', base)
    }
  
    const jsonResolved = (rawText ? fromOffsetJson(rawText) : null)
      ?? fromOffsetJson(String(cfg.format ?? cfg.Format ?? ''))
    if (jsonResolved) return jsonResolved
  
    if (vst === 'PRINT_INPUT') {
      /** 保质期/Prep 等相对偏移字段：须按 base 重算，勿用接口首屏写入的过期 literal */
      if (
        rawText &&
        !tryParsePrintInputOffsetStored(rawText) &&
        !isUniAppDateTimeOffsetField(el)
      ) {
        return applyElementPrefix(cfg, rawText)
      }
      if (
        isUniAppDateTimeOffsetField(el) ||
        inputType === 'date' ||
        inputType === 'datetime' ||
        type === 'TIME'
      ) {
        const off = readOffsetFromElementConfig(el)
        if (off) return resolveFromOffsetAmount(el, off.amount, off.unit, base)
        /** 默认值已展开为字面日期时仍保留，避免丢失 durationdate 等 +N Days */
        if (
          rawText &&
          !tryParsePrintInputOffsetStored(rawText) &&
          isLikelyResolvedDateTimeLiteral(rawText) &&
          !isUniAppDateTimeOffsetField(el)
        ) {
          return applyElementPrefix(cfg, rawText)
        }
        return resolveFromOffsetAmount(el, 0, 'Days', base)
      }
      return null
    }
  
    /** FIXED 的 durationdate/durationtime 等：config.text 可能已是平台录入的偏移 JSON */
    if (vst === 'FIXED' && isUniAppDateTimeOffsetField(el)) {
      const off = readOffsetFromElementConfig(el)
      if (off && (off.amount !== 0 || rawText)) {
        return resolveFromOffsetAmount(el, off.amount, off.unit, base)
      }
      if (
        rawText &&
        !tryParsePrintInputOffsetStored(rawText) &&
        isLikelyResolvedDateTimeLiteral(rawText)
      ) {
        return applyElementPrefix(cfg, rawText)
      }
      return resolveFromOffsetAmount(el, 0, 'Days', base)
    }
  
    const off = readOffsetFromElementConfig(el)
    if (off) return resolveFromOffsetAmount(el, off.amount, off.unit, base)
    if (
      rawText &&
      !tryParsePrintInputOffsetStored(rawText) &&
      isLikelyResolvedDateTimeLiteral(rawText) &&
      isUniAppDateTimeOffsetField(el)
    ) {
      return applyElementPrefix(cfg, rawText)
    }
    return resolveFromOffsetAmount(el, 0, 'Days', base)
  }
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  export function tryParsePrintInputOffsetStored (
    raw: string | null | undefined,
  ): { unit: string; value: string } | null {
    const t = String(raw ?? '').trim()
    if (!t.startsWith('{')) return null
    try {
      const o = JSON.parse(t) as unknown
      if (o == null || typeof o !== 'object' || Array.isArray(o)) return null
      const rec = o as Record<string, unknown>
      const unit = String(rec.unit ?? rec.Unit ?? '').trim()
      const value = String(rec.value ?? rec.Value ?? '')
      if (!unit || !OFFSET_UNITS.has(unit)) return null
      return { unit, value }
    } catch {
      return null
    }
  }
  
  /** 与 Web isDateTimeDataEntryField 对齐（App 侧元素无 typeAdd 时用命名兜底） */
  export function isUniAppDateTimeOffsetField (el: SystemTemplateElementBase): boolean {
    const type = String(el.type || '').toUpperCase()
    const cfg = (el.config || {}) as Record<string, unknown>
    if (type === 'TIME' || type === 'DURATION') return true
    if (type !== 'DATE') return false
    const it = String(cfg.inputType ?? cfg.InputType ?? '').toLowerCase()
    if (it === 'datetime' || it === 'date') return true
    const ta = String((el as { typeAdd?: string }).typeAdd ?? '').trim().toLowerCase().replace(/\s+/g, ' ')
    if (ta === 'label_duration date' || ta.includes('duration date')) return true
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    if (ta === 'auto_current date' || ta.includes('current date')) return true
    if (ta === 'auto_current time' || ta.includes('current time')) return true
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    const nameHint = `${el.elementName ?? ''} ${el.inputKey ?? ''}`.toLowerCase()
    if (/(durationdate|duration_date|duration\s*date)/.test(nameHint)) return true
    return false
  }
  
  /**
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   * 预览/出纸前：按同一基准时刻重算所有 DATE/TIME/DURATION 及偏移类字段，保证 Prep 与 Use By 一致。
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   */
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  export function applyLiveDateTimeFieldsToTemplate (
    template: SystemLabelTemplate,
    base: Date = new Date(),
  ): SystemLabelTemplate {
    const elements = (template.elements || []).map((el) => {
      const type = String(el.type || '').toUpperCase()
      const needsLive =
        type === 'DATE' ||
        type === 'TIME' ||
        type === 'DURATION' ||
        isUniAppDateTimeOffsetField(el)
      if (!needsLive) return el
      const live = resolveElementDateTimeDisplay(el, base)
      if (live == null || !String(live).trim()) return el
      const cfg = { ...(el.config || {}) } as Record<string, unknown>
      cfg.text = live
      cfg.Text = live
      return { ...el, config: cfg }
    })
    return { ...template, elements }
  }
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  export function resolveTemplateDefaultValueForElement (
    el: SystemTemplateElementBase,
    stored: string,
    now: Date,
  ): string {
    const s = String(stored ?? '').trim()
    if (!s) return ''
    if (!isUniAppDateTimeOffsetField(el)) return s
    const parsed = tryParsePrintInputOffsetStored(s)
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    if (parsed) {
      const amount = normalizeOffsetAmount(parsed.value)
      if (amount === null) return ''
      return resolveFromOffsetAmount(el, amount, parsed.unit || 'Days', now)
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    }
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    if (isLikelyResolvedDateTimeLiteral(s)) {
      const off = readOffsetFromElementConfig(el)
      return resolveFromOffsetAmount(el, off?.amount ?? 0, off?.unit ?? 'Days', now)
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    }
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    return s
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  }