/**
 * 统一业务 code → 中文展示入口。
 * 图表/Tag/列表禁止直接把英文枚举抛给用户；未知 code 显示「未知(code)」。
 */

export type StatusDictType =
  | 'batchStatus'
  | 'flowStage'
  | 'personnelStatus'
  | 'insuranceMatch'
  | 'alertHandleStatus'
  | 'alertType'
  | 'alertLevel'
  | 'specialBizType'

const BATCH_STATUS: Record<string, string> = {
  DRAFT: '草稿',
  PENDING_TOWN_APPROVE: '待镇经发初审',
  PENDING_INSURANCE_MATCH: '待居保匹配',
  PENDING_STATUS_MAINTAIN: '待状态维护',
  PENDING_LEADER_APPROVE: '待分管领导审批',
  READY_EXPORT: '可出盘',
  EXPORTED: '已出盘',
  RETURNED: '已回盘',
  ARCHIVED: '已归档',
  REJECTED: '已驳回',
}

/** 流程阶段（与业务状态语义分离；EXPORTED 在流程上多为「回盘信息确认」） */
const FLOW_STAGE: Record<string, string> = {
  STAGE1_PERSONNEL_INPUT: '人员新增录入',
  STAGE2_TOWN_PRECHECK: '镇经发中心初审',
  STAGE3_INSURANCE_MATCH: '居保状态匹配',
  STAGE4_MONTHLY_LIST: '生成月补贴清单',
  STAGE5_LEADER_ONLINE_APPROVE: '分管领导审批',
  STAGE6_COMPARE_FILE: '生成对照文件',
  STAGE7_OFFLINE_SIGN_PAY: '待线下发放',
  STAGE8_RETURN_CONFIRM: '回盘信息确认',
  DRAFT: '人员新增录入',
  PENDING_TOWN_APPROVE: '镇经发中心初审',
  PENDING_INSURANCE_MATCH: '居保状态匹配',
  PENDING_STATUS_MAINTAIN: '比对结果已生成',
  PENDING_LEADER_APPROVE: '分管领导审批',
  READY_EXPORT: '待线下发放',
  EXPORTED: '回盘信息确认',
  RETURNED: '已回盘确认',
  ARCHIVED: '已归档',
  REJECTED: '退回修改',
}

const PERSONNEL_STATUS: Record<string, string> = {
  DRAFT: '草稿',
  PENDING_TOWN_APPROVE: '待镇初审',
  PENDING_INSURANCE_MATCH: '待居保匹配',
  NORMAL: '正常在库',
  PAUSED: '暂停',
  STOPPED: '停止',
  FUNERAL: '死亡丧葬',
  ABNORMAL: '异常待处理',
  ARCHIVED: '已归档',
}

const INSURANCE_MATCH: Record<string, string> = {
  PENDING: '未匹配',
  SUCCESS: '匹配通过',
  LOSE_ELIGIBILITY: '丧失资格',
  FAIL: '匹配失败',
  MANUAL_PASS: '匹配通过',
}

const ALERT_HANDLE: Record<string, string> = {
  PENDING: '待处理',
  PROCESSING: '处理中',
  CLOSED: '已关闭',
}

const ALERT_TYPE: Record<string, string> = {
  BANK_CARD_ABNORMAL: '银行卡异常',
  NAME_MISMATCH: '姓名不一致',
  INSURANCE_MATCH_FAIL: '居保匹配失败',
  AMOUNT_ABNORMAL: '金额异常',
  DEATH_STATUS: '死亡停发预警',
  MATERIAL_PENDING: '材料待补',
  RETURN_FAIL: '回盘失败',
  LAND_MATCH_FAIL: '土地匹配不符合',
  民政死亡比对: '死亡停发预警',
  回盘发放失败: '回盘失败',
}

const ALERT_LEVEL: Record<string, string> = {
  HIGH: '高',
  MEDIUM: '中',
  LOW: '低',
}

const SPECIAL_BIZ: Record<string, string> = {
  FUNERAL: '丧葬补贴',
  PAUSE: '暂停发放',
  STOP: '停止发放',
  RESUME: '恢复发放',
  STANDARD_ADJUST: '调标差额补发',
  SUPPLEMENT: '纳入下月补发',
  REFUND: '多发退款',
  HEIR_UPDATE: '继承人信息变更',
  /** 流程留痕 bizType（非特殊业务单，但时间线会展示） */
  INSURANCE_MATCH: '居保匹配',
  PERSONNEL_STATUS: '人员状态变更',
}

const DICTS: Record<StatusDictType, Record<string, string>> = {
  batchStatus: BATCH_STATUS,
  flowStage: FLOW_STAGE,
  personnelStatus: PERSONNEL_STATUS,
  insuranceMatch: INSURANCE_MATCH,
  alertHandleStatus: ALERT_HANDLE,
  alertType: ALERT_TYPE,
  alertLevel: ALERT_LEVEL,
  specialBizType: SPECIAL_BIZ,
}

/** 是否像未翻译的英文枚举 code */
function looksLikeCode(s: string) {
  return /^[A-Z][A-Z0-9_]*$/.test(s)
}

/** 命中字典或已是中文则返回；未知英文 code 返回 null */
export function tryLabelOf(dictType: StatusDictType, code?: string | null): string | null {
  if (code == null || code === '') return null
  const raw = String(code).trim()
  const table = DICTS[dictType]
  if (table[raw]) return table[raw]
  const upper = raw.toUpperCase()
  if (table[upper]) return table[upper]
  if (!looksLikeCode(raw)) return raw
  return null
}

/**
 * @param dictType 字典册
 * @param code 后端枚举或已是中文的文案
 */
export function labelOf(dictType: StatusDictType, code?: string | null): string {
  if (code == null || code === '') return ''
  const hit = tryLabelOf(dictType, code)
  if (hit != null) return hit
  const raw = String(code).trim()
  if (import.meta.env.DEV) {
    // eslint-disable-next-line no-console
    console.warn(`[statusLabels] 未知 ${dictType} code:`, raw)
  }
  return `未知(${raw})`
}

export function batchStatusLabel(code?: string | null) {
  return labelOf('batchStatus', code)
}

export function flowStageLabelOf(code?: string | null) {
  return labelOf('flowStage', code)
}

export function personnelStatusLabel(code?: string | null) {
  return labelOf('personnelStatus', code)
}