/**
 * 用途:用户列表表格(多选、行内启用/禁用开关、详情/编辑/重置密码/删除入口)+ 分页底栏
 * 必需 props:users / loading / total / page / pageSize / selectedIds / allSelected 及各事件回调
 * 已知限制:仅 loading 且列表为空时显示加载态;空态「清除筛选条件」由 showClearFilters 控制显隐
 */

import {
  CheckSquare, Square, Search, Eye, Edit2, Trash2, KeyRound,
  ChevronLeft, ChevronRight,
} from 'lucide-react';
import { Card, CardContent } from '@/components/ui/card';
import { roleNameMap, roleTagStyle } from '../constants';
import type { UserItem } from '../types';

interface UserTableProps {
  users: UserItem[];
  loading: boolean;
  total: number;
  page: number;
  pageSize: number;
  selectedIds: Set<number>;
  allSelected: boolean;
  showClearFilters: boolean;
  onToggleSelectAll: () => void;
  onToggleSelect: (id: number) => void;
  onShowDetail: (user: UserItem) => void;
  onShowEdit: (user: UserItem) => void;
  onShowResetPassword: (user: UserItem) => void;
  onToggleActive: (user: UserItem) => void;
  onDelete: (id: number) => void;
  onClearFilters: () => void;
  onPageChange: (page: number) => void;
}

export function UserTable({
  users,
  loading,
  total,
  page,
  pageSize,
  selectedIds,
  allSelected,
  showClearFilters,
  onToggleSelectAll,
  onToggleSelect,
  onShowDetail,
  onShowEdit,
  onShowResetPassword,
  onToggleActive,
  onDelete,
  onClearFilters,
  onPageChange,
}: UserTableProps) {
  return (
    <Card className="dg-card">
      <CardContent className="p-0">
        {loading && users.length === 0 ? (
          <div className="p-10 text-center text-[var(--dg-text-muted)]">
            <div className="w-6 h-6 border-2 border-blue-400 border-t-transparent rounded-full animate-spin mx-auto mb-3" />
            加载中...
          </div>
        ) : users.length === 0 ? (
          <div className="p-10 text-center text-[var(--dg-text-muted)]">
            <Search className="w-10 h-10 mx-auto mb-3 opacity-30" />
            <p className="text-sm">没有找到匹配的用户</p>
            {showClearFilters && (
              <button
                onClick={onClearFilters}
                className="text-xs text-blue-400 hover:text-blue-300 mt-2 transition-colors"
              >
                清除筛选条件
              </button>
            )}
          </div>
        ) : (
          <>
            <div className="overflow-x-auto">
              <table className="w-full text-sm">
                <thead>
                  <tr className="border-b border-[var(--dg-border)] bg-[var(--dg-bg-tertiary)]">
                    <th className="text-left px-3 py-3 w-10">
                      <button onClick={onToggleSelectAll} className="hover:opacity-70 transition-opacity">
                        {allSelected ? <CheckSquare className="w-4 h-4 text-blue-400" /> : <Square className="w-4 h-4 text-[var(--dg-text-muted)]" />}
                      </button>
                    </th>
                    <th className="text-left px-4 py-3 font-semibold">用户</th>
                    <th className="text-left px-4 py-3 font-semibold">角色</th>
                    <th className="text-left px-4 py-3 font-semibold">邮箱</th>
                    <th className="text-left px-4 py-3 font-semibold">最后登录</th>
                    <th className="text-left px-4 py-3 font-semibold">状态</th>
                    <th className="text-left px-4 py-3 font-semibold">来源</th>
                    <th className="text-left px-4 py-3 font-semibold">操作</th>
                  </tr>
                </thead>
                <tbody>
                  {users.map(user => {
                    const isSelected = selectedIds.has(user.id);
                    return (
                      <tr
                        key={user.id}
                        className={`border-b border-[var(--dg-border-light)] transition-colors ${
                          isSelected ? 'bg-blue-500/5' : 'hover:bg-[var(--dg-bg-hover)]'
                        }`}
                      >
                        <td className="px-3 py-3.5">
                          <button onClick={() => onToggleSelect(user.id)} className="hover:opacity-70 transition-opacity">
                            {isSelected ? <CheckSquare className="w-4 h-4 text-blue-400" /> : <Square className="w-4 h-4 text-[var(--dg-text-muted)]" />}
                          </button>
                        </td>
                        <td className="px-4 py-3.5">
                          <div className="flex items-center gap-3 cursor-pointer" onClick={() => onShowDetail(user)}>
                            <div>
                              <div className="font-medium hover:text-blue-400 transition-colors">{user.display_name || user.username}</div>
                              <div className="text-xs text-[var(--dg-text-muted)]">@{user.username}</div>
                            </div>
                          </div>
                        </td>
                        <td className="px-4 py-3.5">
                          <span className={`inline-flex px-2.5 py-1 rounded-md text-xs font-medium ${roleTagStyle[user.role] || 'bg-[var(--dg-text-muted)]/15 text-[var(--dg-text-muted)]'}`}>
                            {roleNameMap[user.role] || user.role}
                          </span>
                        </td>
                        <td className="px-4 py-3.5 text-[var(--dg-text-secondary)]">{user.email || '-'}</td>
                        <td className="px-4 py-3.5 text-[var(--dg-text-secondary)] text-xs">
                          {user.last_login
                            ? new Date(user.last_login).toLocaleString('zh-CN', { month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit' })
                            : '-'}
                        </td>
                        <td className="px-4 py-3.5">
                          <button
                            onClick={() => onToggleActive(user)}
                            className={`relative w-11 h-6 rounded-full transition-colors ${user.is_active ? 'bg-green-500' : 'bg-[var(--dg-bg-hover)]'}`}
                            title={user.is_active ? '点击禁用' : '点击启用'}
                            aria-label={user.is_active ? '禁用用户' : '启用用户'}
                          >
                            <div
                              className="absolute top-0.5 w-5 h-5 rounded-full bg-white shadow transition-all"
                              style={{ transform: user.is_active ? 'translateX(20px)' : 'translateX(2px)' }}
                            />
                          </button>
                        </td>
                        <td className="px-4 py-3.5">
                          <span className={`inline-flex px-2 py-0.5 rounded text-xs font-medium ${
                            user.auth_source === 'ldap'
                              ? 'bg-blue-500/15 text-blue-400'
                              : 'bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-muted)]'
                          }`}>
                            {user.auth_source === 'ldap' ? 'LDAP' : '本地'}
                          </span>
                        </td>
                        <td className="px-4 py-3.5">
                          <div className="flex gap-1.5">
                            <button
                              onClick={() => onShowDetail(user)}
                              className="p-1.5 rounded-md hover:bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-muted)] hover:text-blue-400 transition-colors"
                              title="查看详情"
                            >
                              <Eye className="w-4 h-4" />
                            </button>
                            <button
                              onClick={() => onShowEdit(user)}
                              className="p-1.5 rounded-md hover:bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-muted)] hover:text-blue-400 transition-colors"
                              title="编辑"
                            >
                              <Edit2 className="w-4 h-4" />
                            </button>
                            <button
                              onClick={() => user.auth_source !== 'ldap' && onShowResetPassword(user)}
                              className={`p-1.5 rounded-md transition-colors ${user.auth_source === 'ldap' ? 'opacity-30 cursor-not-allowed' : 'hover:bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-muted)] hover:text-yellow-400'}`}
                              title={user.auth_source === 'ldap' ? 'LDAP 用户密码由 LDAP 服务器管理' : '重置密码'}
                              disabled={user.auth_source === 'ldap'}
                            >
                              <KeyRound className="w-4 h-4" />
                            </button>
                            <button
                              className="p-1.5 rounded-md hover:bg-red-500/10 text-[var(--dg-text-muted)] hover:text-red-400 transition-colors"
                              onClick={() => onDelete(user.id)}
                              title="删除"
                            >
                              <Trash2 className="w-4 h-4" />
                            </button>
                          </div>
                        </td>
                      </tr>
                    );
                  })}
                </tbody>
              </table>
            </div>
            <div className="flex items-center justify-between px-5 py-4 border-t border-[var(--dg-border)]">
              <span className="text-sm text-[var(--dg-text-muted)]">
                共 <strong className="text-[var(--dg-text-primary)]">{total}</strong> 条
                {selectedIds.size > 0 && `，已选择 ${selectedIds.size} 项`}
              </span>
              {total > pageSize && (
                <div className="flex items-center gap-1">
                  <button
                    onClick={() => onPageChange(Math.max(1, page - 1))}
                    disabled={page <= 1}
                    className="p-1.5 rounded hover:bg-[var(--dg-bg-hover)] disabled:opacity-30 disabled:cursor-not-allowed"
                  >
                    <ChevronLeft className="w-4 h-4" />
                  </button>
                  <span className="text-sm text-[var(--dg-text-secondary)] px-2">
                    {page} / {Math.ceil(total / pageSize)}
                  </span>
                  <button
                    onClick={() => onPageChange(Math.min(Math.ceil(total / pageSize), page + 1))}
                    disabled={page >= Math.ceil(total / pageSize)}
                    className="p-1.5 rounded hover:bg-[var(--dg-bg-hover)] disabled:opacity-30 disabled:cursor-not-allowed"
                  >
                    <ChevronRight className="w-4 h-4" />
                  </button>
                </div>
              )}
            </div>
          </>
        )}
      </CardContent>
    </Card>
  );
}