import type { ConsignmentSpecField, ConsignmentSpecValues } from '../types/consignment'

export type ConsignmentSpecDisplayItem = {
  key: string
  label: string
  value: string
}

/** 旧版内置规格字段（没有动态规格配置的历史分类才会用到）。 */
export type ConsignmentLegacySpecRecord = {
  system?: string
  serverZone?: string
  series?: string
  diamondLevel?: number | null
  brillianceCount?: number | null
}

/** 动态规格字段按模板顺序展示时的标签配色。 */
export const CONSIGNMENT_SPEC_TAG_COLORS = [
  'geekblue',
  'cyan',
  'orange',
  'gold',
  'magenta',
  'green',
]

/** 选项值统一按字符串匹配（配置里 value 是字符串，历史数据可能是数字）。 */
function formatSpecValue(field: ConsignmentSpecField, raw: unknown): string {
  if (raw === undefined || raw === null) return ''
  const text = String(raw).trim()
  if (!text) return ''
  if (field.type === 'select' || field.type === 'radio') {
    const option = field.options?.find((item) => String(item.value) === text)
    return option?.label || text
  }
  return text
}

/**
 * 按寄卖分类模板把 specValues 转成可展示的 {label, value}。
 *
 * 顺序与后端 buildConsignmentSpecText 保持一致（sortOrder 升序，其次 key），
 * 选项型字段把存储的选项值映射回选项名称（如 product=15 → 碎梦浮光珍宝礼盒）。
 */
export function resolveConsignmentSpecDisplayItems(
  specs: ConsignmentSpecField[] | null | undefined,
  values: ConsignmentSpecValues | null | undefined,
): ConsignmentSpecDisplayItem[] {
  if (!specs || specs.length === 0) return []
  return [...specs]
    .sort((a, b) => (a.sortOrder ?? 0) - (b.sortOrder ?? 0) || a.key.localeCompare(b.key))
    .map((field) => ({
      key: field.key,
      label: field.label,
      value: formatSpecValue(field, values?.[field.key]),
    }))
    .filter((item) => item.value !== '')
}

/** 旧版内置字段拼成一行（历史分类 & 历史数据兜底）。 */
export function formatLegacyConsignmentSpec(record: ConsignmentLegacySpecRecord): string {
  const parts = [
    record.system,
    record.serverZone,
    record.series,
    record.diamondLevel ? `${record.diamondLevel}钻` : '',
    record.brillianceCount ? `${record.brillianceCount}璀璨` : '',
  ]
    .map((part) => String(part ?? '').trim())
    .filter(Boolean)
  return parts.join(' / ')
}

/**
 * 详情页规格文本：后端 specText 优先（已含选项名称），其次按模板现拼，最后回退旧字段。
 */
export function resolveConsignmentSpecText(
  input: {
    specText?: string
    specs?: ConsignmentSpecField[] | null
    specValues?: ConsignmentSpecValues | null
  } & ConsignmentLegacySpecRecord,
): string {
  const specText = String(input.specText ?? '').trim()
  if (specText) return specText
  const items = resolveConsignmentSpecDisplayItems(input.specs, input.specValues)
  if (items.length > 0) return items.map((item) => `${item.label} ${item.value}`).join(' / ')
  return formatLegacyConsignmentSpec(input) || '-'
}