/** 数字人版本列表加载模型（任务 132）：解析 /api/digital-human/versions 数组负载(camel)；纯逻辑。 */
import { unwrap } from '../../api/envelope.ts'
import { normalizeDigitalHumanStatus, type DigitalHumanVersion, type DigitalHumanVersionList } from './digitalhuman-dto.ts'

function text(value: unknown): string {
  return typeof value === 'string' ? value.trim() : ''
}

function numberOrNull(value: unknown): number | null {
  return typeof value === 'number' && Number.isFinite(value) ? Math.floor(value) : null
}

/** 解析单条数字人版本；缺 id 视为无效。 */
export function toDigitalHumanVersion(raw: unknown): DigitalHumanVersion | null {
  if (!raw || typeof raw !== 'object') return null
  const r = raw as Record<string, unknown>
  const id = numberOrNull(r.id)
  if (id === null) return null
  const version: DigitalHumanVersion = { id, version: text(r.version), status: normalizeDigitalHumanStatus(r.status) }
  const fileSize = numberOrNull(r.fileSize)
  if (fileSize !== null) version.fileSize = fileSize
  const md5 = text(r.md5)
  if (md5) version.md5 = md5
  const changelog = text(r.changelog)
  if (changelog) version.changelog = changelog
  const minClientVersion = text(r.minClientVersion)
  if (minClientVersion) version.minClientVersion = minClientVersion
  const downloadUrl = text(r.downloadUrl)
  if (downloadUrl) version.downloadUrl = downloadUrl
  const createdBy = text(r.createdBy)
  if (createdBy) version.createdBy = createdBy
  const createdAt = text(r.createdAt)
  if (createdAt) version.createdAt = createdAt
  const releasedAt = text(r.releasedAt)
  if (releasedAt) version.releasedAt = releasedAt
  if (typeof r.isLatest === 'boolean') version.isLatest = r.isLatest
  return version
}

/** 归一化版本列表负载(data 数组)为前端列表；缺省回空。 */
export function parseDigitalHumanVersions(payload: unknown): DigitalHumanVersionList {
  const data = unwrap<unknown>(payload)
  const list = Array.isArray(data) ? data : data && typeof data === 'object' ? (data as Record<string, unknown>).items : null
  if (!Array.isArray(list)) return { items: [] }
  return {
    items: list
      .map((raw) => toDigitalHumanVersion(raw))
      .filter((version): version is DigitalHumanVersion => version !== null),
  }
}