/**
 * EmployeeProfileShell — 员工档案壳组件
 * 提供统一的员工详情页布局：摘要头部 + 标签导航 + 内容区域
 * 可被 Roster、Termination、SocialInsurance 等页面复用
 */
import { useState, ReactNode } from 'react'
import { X, Phone, Mail, MapPin, Calendar, Briefcase, DollarSign, AlertTriangle } from 'lucide-react'
import { fmt, DetailTab, TAB_GROUPS } from './shared'

interface EmployeeSummary {
  id: string
  name: string
  department: string
  status: string
  position?: string
  hireDate?: string
  monthlySalary?: number
  phone?: string
  email?: string
  city?: string
  idCardNumber?: string
  probationInfo?: {
    isProbation: boolean
    isExpiring: boolean
    daysToConfirm: number
  }
  contractStatus?: string
  latestContract?: {
    contractType?: string
    endDate?: string
  }
  hasTermination?: boolean
  latestTerminationStatus?: string
  latestTerminationType?: string
}

interface EmployeeProfileShellProps {
  /** 员工摘要数据 */
  profile: EmployeeSummary
  /** 返回按钮回调 */
  onBack: () => void
  /** 标签计数获取函数 */
  getTabCount?: (key: DetailTab) => number
  /** 当前激活标签 */
  activeTab?: DetailTab
  /** 标签切换回调 */
  onTabChange?: (tab: DetailTab) => void
  /** 是否为在职状态 */
  isActive?: boolean
  /** 隐藏的标签列表（如离职员工隐藏考勤绩效） */
  hiddenTabs?: DetailTab[]
  /** 自定义标签渲染（覆盖默认 TAB_GROUPS） */
  tabGroups?: typeof TAB_GROUPS
  /** 内容区域渲染函数 */
  children?: (tab: DetailTab) => ReactNode
}

/** 合同类型标签映射 */
const CONTRACT_TYPE_LABELS: Record<string, { label: string; style: string }> = {
  FIXED: { label: '固定期限', style: 'bg-blue-50 text-blue-700 border border-blue-200' },
  UNFIXED: { label: '无固定期', style: 'bg-purple-50 text-purple-700 border border-purple-200' },
  LABOR: { label: '劳务协议', style: 'bg-amber-50 text-amber-700 border border-amber-200' },
  INTERNSHIP: { label: '实习协议', style: 'bg-teal-50 text-teal-700 border border-teal-200' },
  DISPATCH: { label: '劳务派遣', style: 'bg-cyan-50 text-cyan-700 border border-cyan-200' },
  OUTSOURCING: { label: '业务外包', style: 'bg-slate-50 text-slate-700 border border-slate-200' },
  PARTTIME: { label: '兼职协议', style: 'bg-indigo-50 text-indigo-700 border border-indigo-200' },
  UNSIGNED: { label: '未签合同', style: 'bg-gray-100 text-gray-500 border border-gray-200' },
}

/** 合同状态标签映射 */
const CONTRACT_STATUS_LABELS: Record<string, { label: string; style: string }> = {
  expired: { label: '已过期', style: 'bg-red-50 text-rose-700' },
  unsigned_over_year: { label: '未签署(超1年)', style: 'bg-red-50 text-rose-700' },
  unsigned_over_30: { label: '未签署(超30天)', style: 'bg-red-50 text-rose-700' },
  unsigned: { label: '未签署', style: 'bg-yellow-50 text-amber-700' },
  expiring: { label: '即将到期', style: 'bg-yellow-50 text-amber-700' },
  active: { label: '正常', style: 'bg-green-50 text-emerald-700' },
  unfixed: { label: '正常', style: 'bg-green-50 text-emerald-700' },
}

export default function EmployeeProfileShell({
  profile,
  onBack,
  getTabCount,
  activeTab: controlledTab,
  onTabChange,
  isActive = true,
  hiddenTabs = [],
  tabGroups = TAB_GROUPS,
  children,
}: EmployeeProfileShellProps) {
  const [internalTab, setInternalTab] = useState<DetailTab>('basic')
  const tab = controlledTab ?? internalTab
  const setTab = onTabChange ?? setInternalTab

  const contractType = profile.latestContract?.contractType
  const contractTypeCfg = CONTRACT_TYPE_LABELS[contractType || ''] || CONTRACT_TYPE_LABELS.UNSIGNED
  const contractStatusCfg = CONTRACT_STATUS_LABELS[profile.contractStatus || ''] || { label: '无合同', style: 'bg-gray-100 text-gray-500' }

  return (
    <div className="flex flex-col h-[calc(100vh-120px)]">
      {/* 头部：返回按钮 + 员工摘要卡片 */}
      <div className="shrink-0 pb-3">
        <div className="flex items-center gap-3 mb-3">
          <button onClick={onBack} className="text-gray-400 hover:text-gray-600 transition-colors" aria-label="返回列表">
            <X className="w-5 h-5" />
          </button>
          <h1 className="text-sm font-semibold">{profile.name} — 完整档案</h1>
        </div>

        {/* 员工摘要卡片 */}
        <div className="rounded-lg border border-gray-200 bg-white p-4">
          <div className="flex items-start justify-between gap-4 flex-wrap">
            {/* 左侧：基本信息 */}
            <div className="flex items-center gap-4">
              {/* 头像占位 */}
              <div className="w-12 h-12 rounded-full bg-primary/10 flex items-center justify-center text-primary font-medium text-lg shrink-0">
                {profile.name?.charAt(0) || '?'}
              </div>
              <div className="space-y-1">
                <div className="flex items-center gap-2 flex-wrap">
                  <span className="font-medium text-sm">{profile.name}</span>
                  <span className={`px-2 py-0.5 rounded text-xs ${profile.status === 'ACTIVE' ? 'bg-green-50 text-emerald-700' : 'bg-gray-100 text-gray-500'}`}>
                    {profile.status === 'ACTIVE' ? '在职' : profile.status === 'PRE_HIRE' ? '预入职' : '离职'}
                  </span>
                  {profile.probationInfo?.isProbation && (
                    <span className={`px-2 py-0.5 rounded text-xs ${
                      profile.probationInfo.isExpiring
                        ? 'bg-orange-50 text-orange-700 border border-orange-200'
                        : 'bg-amber-50 text-amber-700 border border-amber-200'
                    }`}>
                      试用期{profile.probationInfo.isExpiring ? `即将到期(${profile.probationInfo.daysToConfirm}天)` : `剩${profile.probationInfo.daysToConfirm}天`}
                    </span>
                  )}
                  {profile.hasTermination && profile.status === 'ACTIVE' && profile.latestTerminationStatus !== 'CANCELLED' && profile.latestTerminationStatus !== 'COMPLETED' && (
                    <span className={`px-2 py-0.5 rounded text-xs ${profile.latestTerminationType === 'RESIGNATION' ? 'bg-blue-50 text-blue-700' : 'bg-amber-50 text-amber-700'}`}>
                      {profile.latestTerminationType === 'RESIGNATION' ? '待离职' : '待解聘'}
                    </span>
                  )}
                </div>
                <div className="flex items-center gap-3 text-xs text-gray-500 flex-wrap">
                  {profile.department && (
                    <span className="flex items-center gap-1">
                      <Briefcase className="w-3 h-3" />{profile.department}
                    </span>
                  )}
                  {profile.position && (
                    <span className="text-gray-400">{profile.position}</span>
                  )}
                  {profile.hireDate && (
                    <span className="flex items-center gap-1">
                      <Calendar className="w-3 h-3" />入职 {profile.hireDate.toString().slice(0, 10)}
                    </span>
                  )}
                  {profile.monthlySalary != null && (
                    <span className="flex items-center gap-1">
                      <DollarSign className="w-3 h-3" />¥{fmt(profile.monthlySalary)}/月
                    </span>
                  )}
                </div>
                {/* 联系方式 */}
                <div className="flex items-center gap-3 text-xs text-gray-400 flex-wrap">
                  {profile.phone && (
                    <span className="flex items-center gap-1">
                      <Phone className="w-3 h-3" />{profile.phone}
                    </span>
                  )}
                  {profile.email && (
                    <span className="flex items-center gap-1">
                      <Mail className="w-3 h-3" />{profile.email}
                    </span>
                  )}
                  {profile.city && (
                    <span className="flex items-center gap-1">
                      <MapPin className="w-3 h-3" />{profile.city}
                    </span>
                  )}
                  {profile.idCardNumber && (
                    <span className="font-mono">{profile.idCardNumber}</span>
                  )}
                </div>
              </div>
            </div>

            {/* 右侧：合同状态 */}
            <div className="flex items-center gap-2 flex-wrap">
              <span className={`px-2 py-0.5 rounded text-xs ${contractTypeCfg.style}`}>
                {contractTypeCfg.label}
              </span>
              <span className={`px-2 py-0.5 rounded text-xs ${contractStatusCfg.style}`}>
                {contractStatusCfg.label}
              </span>
              {(profile.contractStatus === 'expired' || profile.contractStatus === 'unsigned_over_year' || profile.contractStatus === 'unsigned_over_30') && (
                <span className="flex items-center gap-1 text-xs text-rose-600">
                  <AlertTriangle className="w-3 h-3" />需处理
                </span>
              )}
            </div>
          </div>
        </div>
      </div>

      {/* 标签导航 */}
      <div className="flex gap-1 border-b overflow-x-auto shrink-0">
        {tabGroups.map((group) => (
          <div key={group.group} className="flex items-center">
            {group.tabs
              .filter((t) => isActive || !hiddenTabs.includes(t.key))
              .map((t) => {
                const count = getTabCount?.(t.key) ?? 0
                return (
                  <button
                    key={t.key}
                    onClick={() => setTab(t.key)}
                    className={`px-4 py-2 text-sm font-medium border-b-2 transition-colors whitespace-nowrap flex items-center gap-1 ${
                      tab === t.key ? 'border-primary text-primary' : 'border-transparent text-gray-500 hover:text-gray-700'
                    }`}
                  >
                    {t.label}
                    {count > 0 && (
                      <span className={`ml-0.5 px-1.5 py-0.5 rounded-full text-[10px] leading-none ${
                        tab === t.key ? 'bg-primary/10 text-primary' : 'bg-gray-100 text-gray-500'
                      }`}>
                        {count}
                      </span>
                    )}
                  </button>
                )
              })}
          </div>
        ))}
      </div>

      {/* 内容区域 */}
      <div className="flex-1 overflow-y-auto pt-3">
        {children?.(tab)}
      </div>
    </div>
  )
}