'use client'

import { Fragment, useState, useEffect } from 'react'
import { Dialog, Transition, Listbox } from '@headlessui/react'
import {
  XMarkIcon,
  UserIcon,
  DocumentTextIcon,
  ShieldCheckIcon,
  CalendarIcon,
  EnvelopeIcon,
  PhoneIcon,
  MapPinIcon,
  BuildingOfficeIcon,
  IdentificationIcon,
  CheckCircleIcon,
  XCircleIcon,
  ChevronUpDownIcon,
  CheckIcon
} from '@heroicons/react/24/outline'
import { AdminAPI, DetailedUserInfo } from '../utils/api'
import useAuthStore from '../store/authStore'

interface UserDetailModalProps {
  isOpen: boolean
  onClose: () => void
  userId: string | null
  onUserUpdated?: () => void
}

type UserStatus = 'inactive' | 'pending' | 'active' | 'suspended' | 'archived'

type ContractFileItem = {
  key: string
  filename: string
  documentId?: number | null
  contract_type?: 'contract' | 'gdpr' | string | null
}

const STATUS_OPTIONS: { value: UserStatus; label: string; color: string }[] = [
  { value: 'pending', label: 'Pending', color: 'amber' },
  { value: 'active', label: 'Active', color: 'green' },
  { value: 'suspended', label: 'Suspended', color: 'rose' },
  { value: 'archived', label: 'Archived', color: 'gray' },
  { value: 'inactive', label: 'Inactive', color: 'gray' }
]

export default function UserDetailModal({ isOpen, onClose, userId, onUserUpdated }: UserDetailModalProps) {
  const [userDetails, setUserDetails] = useState<DetailedUserInfo | null>(null)
  const [loading, setLoading] = useState(false)
  const [error, setError] = useState<string | null>(null)
  const [saving, setSaving] = useState(false)
  const [selectedStatus, setSelectedStatus] = useState<UserStatus>('pending')
  const token = useAuthStore(state => state.accessToken)

  // Contract preview state (lazy-loaded, per contract type)
  const [activePreviewTab, setActivePreviewTab] = useState<'contract' | 'gdpr'>('contract')
  const [previewState, setPreviewState] = useState({
    contract: { loading: false, html: null as string | null, error: null as string | null, warning: null as string | null },
    gdpr: { loading: false, html: null as string | null, error: null as string | null, warning: null as string | null },
  })

  const [contractFiles, setContractFiles] = useState<{ contract: ContractFileItem[]; gdpr: ContractFileItem[] }>({
    contract: [],
    gdpr: []
  })
  const [docsLoading, setDocsLoading] = useState(false)
  const [moveLoading, setMoveLoading] = useState<Record<string, boolean>>({})
  const [selectedFile, setSelectedFile] = useState<{ contract?: string; gdpr?: string }>({})

  const missingIdOrContract = !!userDetails?.userStatus && (
    userDetails.userStatus.documents_uploaded !== 1 ||
    userDetails.userStatus.contract_signed !== 1
  )
  const storageMissing = !!userDetails?.storageStatus && (
    userDetails.storageStatus.idDocumentsPresent === false ||
    userDetails.storageStatus.contractPresent === false
  )
  const canVerifyByStatus = !!(userDetails?.userStatus
    && userDetails.userStatus.email_verified === 1
    && userDetails.userStatus.profile_completed === 1
    && userDetails.userStatus.documents_uploaded === 1
    && userDetails.userStatus.contract_signed === 1)
  const canVerify = storageMissing ? (canVerifyByStatus && !storageMissing) : canVerifyByStatus

  useEffect(() => {
    if (isOpen && userId && token) {
      fetchUserDetails()
      loadContractFiles()
    }
  }, [isOpen, userId, token])
  useEffect(() => {
    if (!isOpen || !userId || !token || !userDetails) return
    loadContractFiles()
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [userDetails])

  useEffect(() => {
    if (!isOpen) return
    setActivePreviewTab('contract')
    setPreviewState({
      contract: { loading: false, html: null, error: null, warning: null },
      gdpr: { loading: false, html: null, error: null, warning: null }
    })
    setContractFiles({ contract: [], gdpr: [] })
    setSelectedFile({})
  }, [isOpen, userId])

  useEffect(() => {
    if (userDetails?.userStatus?.status) {
      setSelectedStatus(userDetails.userStatus.status as UserStatus)
    }
  }, [userDetails])

  const fetchUserDetails = async () => {
    if (!userId || !token) return
    
    setLoading(true)
    setError(null)
    
    try {
      const response = await AdminAPI.getDetailedUserInfo(token, userId)
      if (response.success) {
        setUserDetails(response)
      } else {
        throw new Error(response.message || 'Failed to fetch user details')
      }
    } catch (err) {
      const errorMessage = err instanceof Error ? err.message : 'Failed to fetch user details'
      setError(errorMessage)
      console.error('UserDetailModal.fetchUserDetails error:', err)
    } finally {
      setLoading(false)
    }
  }

  const handleStatusChange = async (newStatus: UserStatus) => {
    if (!userId || !token || newStatus === selectedStatus) return
    
    setSaving(true)
    setError(null)
    
    try {
      const response = await AdminAPI.updateUserStatus(token, userId, newStatus)
      if (response.success) {
        setSelectedStatus(newStatus)
        await fetchUserDetails()
        if (onUserUpdated) {
          onUserUpdated()
        }
      } else {
        throw new Error(response.message || 'Failed to update user status')
      }
    } catch (err) {
      const errorMessage = err instanceof Error ? err.message : 'Failed to update user status'
      setError(errorMessage)
      console.error('UserDetailModal.handleStatusChange error:', err)
    } finally {
      setSaving(false)
    }
  }

  const handleToggleAdminVerification = async () => {
    if (!userId || !token || !userDetails?.userStatus) return
    
    setSaving(true)
    setError(null)
    
    try {
      const newValue = userDetails.userStatus.is_admin_verified === 1 ? 0 : 1
      const response = await AdminAPI.updateUserVerification(token, userId, newValue)
      
      if (response.success) {
        await fetchUserDetails()
        if (onUserUpdated) {
          onUserUpdated()
        }
      } else {
        throw new Error(response.message || 'Failed to update verification status')
      }
    } catch (err) {
      const errorMessage = err instanceof Error ? err.message : 'Failed to update verification status'
      setError(errorMessage)
      console.error('UserDetailModal.handleToggleAdminVerification error:', err)
    } finally {
      setSaving(false)
    }
  }

  const loadContractPreview = async (contractType: 'contract' | 'gdpr', documentId?: number, objectKey?: string) => {
    if (!userId || !token || !userDetails) return
    setPreviewState((prev) => ({
      ...prev,
      [contractType]: { ...prev[contractType], loading: true, error: null, warning: null }
    }))
    try {
      const result = await AdminAPI.getContractPreviewHtml(token, String(userId), userDetails.user.user_type, contractType, documentId, objectKey)
      setPreviewState((prev) => ({
        ...prev,
        [contractType]: { loading: false, html: result.html, error: null, warning: result.warning || null }
      }))
    } catch (e: any) {
      console.error('UserDetailModal.loadContractPreview error:', e)
      setPreviewState((prev) => ({
        ...prev,
        [contractType]: { loading: false, html: null, error: e?.message || 'Failed to load contract preview', warning: e?.warning || null }
      }))
    }
  }

  const loadContractFiles = async () => {
    if (!userId || !token) return
    setDocsLoading(true)
    try {
      const result = await AdminAPI.listContractFiles(token, String(userId), userDetails?.user?.user_type)
      const contract = Array.isArray(result?.contract) ? result.contract : []
      const gdpr = Array.isArray(result?.gdpr) ? result.gdpr : []
      setContractFiles({ contract, gdpr })
      setSelectedFile((prev) => ({
        contract: prev.contract || contract[0]?.key || undefined,
        gdpr: prev.gdpr || gdpr[0]?.key || undefined
      }))
    } catch (e) {
      console.error('UserDetailModal.loadContractFiles error:', e)
      setContractFiles({ contract: [], gdpr: [] })
    } finally {
      setDocsLoading(false)
    }
  }

  const moveContractDoc = async (documentId: number | undefined, targetType: 'contract' | 'gdpr', filename?: string | null, objectKey?: string) => {
    if (!userId || !token) return
    const label = targetType === 'gdpr' ? 'GDPR' : 'Contract'
    const name = filename ? `\n\nFile: ${filename}` : ''
    const ok = window.confirm(`Move this document to ${label}?${name}`)
    if (!ok) return
    const loadingKey = objectKey || String(documentId || '')
    setMoveLoading((prev) => ({ ...prev, [loadingKey]: true }))
    try {
      await AdminAPI.moveContractDocument(token, String(userId), documentId, targetType, objectKey)
      await loadContractFiles()
    } catch (e) {
      console.error('UserDetailModal.moveContractDoc error:', e)
    } finally {
      setMoveLoading((prev) => ({ ...prev, [loadingKey]: false }))
    }
  }

  const formatDate = (dateString: string | undefined | null) => {
    if (!dateString) return 'N/A'
    return new Date(dateString).toLocaleDateString('en-US', {
      year: 'numeric',
      month: 'long',
      day: 'numeric'
    })
  }

  const getStatusColor = (status: UserStatus) => {
    const option = STATUS_OPTIONS.find(opt => opt.value === status)
    return option?.color || 'gray'
  }

  const getStatusBadgeClass = (color: string) => {
    const colorMap: Record<string, string> = {
      amber: 'bg-amber-100 text-amber-800 border-amber-200',
      green: 'bg-green-100 text-green-800 border-green-200',
      rose: 'bg-rose-100 text-rose-800 border-rose-200',
      gray: 'bg-gray-100 text-gray-800 border-gray-200'
    }
    return colorMap[color] || colorMap.gray
  }

  if (!isOpen) return null

  return (
    <Transition.Root show={isOpen} as={Fragment}>
      <Dialog as="div" className="relative z-50" onClose={onClose}>
        <Transition.Child
          as={Fragment}
          enter="ease-out duration-300"
          enterFrom="opacity-0"
          enterTo="opacity-100"
          leave="ease-in duration-200"
          leaveFrom="opacity-100"
          leaveTo="opacity-0"
        >
          <div className="fixed inset-0 bg-black/30 backdrop-blur-sm transition-opacity" />
        </Transition.Child>

        <div className="fixed inset-0 z-10 overflow-y-auto">
          <div className="flex min-h-full items-center justify-center p-4 text-center sm:p-6">
            <Transition.Child
              as={Fragment}
              enter="ease-out duration-300"
              enterFrom="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
              enterTo="opacity-100 translate-y-0 sm:scale-100"
              leave="ease-in duration-200"
              leaveFrom="opacity-100 translate-y-0 sm:scale-100"
              leaveTo="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
            >
              <Dialog.Panel className="relative transform overflow-hidden rounded-lg bg-white shadow-xl transition-all w-full max-w-5xl max-h-[85vh] flex flex-col">
                {/* Close Button */}
                <div className="absolute right-0 top-0 z-10 pr-4 pt-4">
                  <button
                    type="button"
                    className="rounded-md bg-white text-gray-400 hover:text-gray-500 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                    onClick={onClose}
                  >
                    <span className="sr-only">Close</span>
                    <XMarkIcon className="h-6 w-6" aria-hidden="true" />
                  </button>
                </div>

                {/* Scrollable Content Area */}
                <div className="overflow-y-auto px-4 pb-4 pt-5 sm:p-6">
                  <div className="w-full">
                    {loading ? (
                      <div className="flex justify-center items-center py-12">
                        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-indigo-600"></div>
                      </div>
                    ) : error ? (
                      <div className="rounded-md bg-red-50 p-4">
                        <div className="flex">
                          <XCircleIcon className="h-5 w-5 text-red-400" aria-hidden="true" />
                          <div className="ml-3">
                            <h3 className="text-sm font-medium text-red-800">Error</h3>
                            <div className="mt-2 text-sm text-red-700">{error}</div>
                          </div>
                        </div>
                      </div>
                    ) : userDetails ? (
                      <div className="space-y-6">
                        {/* Header Section with User Info & Status */}
                        <div className="bg-gradient-to-r from-indigo-500 to-purple-600 rounded-lg px-6 py-8 text-white">
                          <div className="flex items-start justify-between">
                            <div className="flex items-start gap-4">
                              <div className="bg-white/20 backdrop-blur-sm p-4 rounded-full">
                                {userDetails.user.user_type === 'company' ? (
                                  <BuildingOfficeIcon className="h-10 w-10 text-white" />
                                ) : (
                                  <UserIcon className="h-10 w-10 text-white" />
                                )}
                              </div>
                              <div className="text-left">
                                <h2 className="text-2xl font-bold">
                                  {userDetails.user.user_type === 'personal' 
                                    ? `${userDetails.personalProfile?.first_name || ''} ${userDetails.personalProfile?.last_name || ''}`.trim()
                                    : userDetails.companyProfile?.company_name || 'Unknown'}
                                </h2>
                                <p className="text-indigo-100 mt-1">{userDetails.user.email}</p>
                                <div className="flex items-center gap-2 mt-3">
                                  <span className={`inline-flex items-center px-3 py-1 rounded-full text-xs font-medium ${
                                    userDetails.user.user_type === 'personal' 
                                      ? 'bg-blue-100 text-blue-800' 
                                      : 'bg-purple-100 text-purple-800'
                                  }`}>
                                    {userDetails.user.user_type === 'personal' ? 'Personal' : 'Company'}
                                  </span>
                                  <span className={`inline-flex items-center px-3 py-1 rounded-full text-xs font-medium ${
                                    userDetails.user.role === 'admin' || userDetails.user.role === 'super_admin'
                                      ? 'bg-yellow-100 text-yellow-800'
                                      : 'bg-gray-100 text-gray-800'
                                  }`}>
                                    {userDetails.user.role === 'super_admin' ? 'Super Admin' : userDetails.user.role}
                                  </span>
                                </div>
                              </div>
                            </div>
                            
                            {/* Status Badge */}
                            {userDetails.userStatus && (
                              <div className="bg-white rounded-lg px-4 py-3 text-gray-900">
                                <div className="text-xs text-gray-500 mb-1">Current Status</div>
                                <div className={`inline-flex items-center px-3 py-1.5 rounded-full text-sm font-semibold border ${
                                  getStatusBadgeClass(getStatusColor(userDetails.userStatus.status as UserStatus))
                                }`}>
                                  {userDetails.userStatus.status.charAt(0).toUpperCase() + userDetails.userStatus.status.slice(1)}
                                </div>
                              </div>
                            )}
                          </div>
                        </div>

                        {/* Admin Controls Section */}
                        <div className="bg-gray-50 rounded-lg p-6 border border-gray-200">
                          <h3 className="text-lg font-semibold text-gray-900 mb-4 flex items-center gap-2">
                            <ShieldCheckIcon className="h-5 w-5 text-indigo-600" />
                            Admin Controls
                          </h3>

                          {missingIdOrContract && (
                            <div className="rounded-md border border-amber-200 bg-amber-50 px-4 py-3 text-sm text-amber-800 mb-4">
                              ID documents or a signed contract are missing for this user. The user’s verification status should be checked.
                            </div>
                          )}

                          {storageMissing && (
                            <div className="rounded-md border border-amber-200 bg-amber-50 px-4 py-3 text-sm text-amber-800 mb-4">
                              ID documents or a signed contract are missing from object storage. The user’s verification status should be checked.
                            </div>
                          )}

                          {missingIdOrContract && (
                            <div className="rounded-md border border-amber-200 bg-amber-50 px-4 py-3 text-sm text-amber-800 mb-4">
                              ID documents or a signed contract are missing for this user. The user’s verification status should be checked.
                            </div>
                          )}
                          
                          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                            {/* Status Dropdown */}
                            <div>
                              <label className="block text-sm font-medium text-gray-700 mb-2">
                                Change Status
                              </label>
                              <Listbox value={selectedStatus} onChange={handleStatusChange} disabled={saving}>
                                <div className="relative">
                                  <Listbox.Button className="relative w-full cursor-pointer rounded-lg bg-white py-2.5 pl-3 pr-10 text-left border border-gray-300 hover:border-indigo-500 focus:outline-none focus:ring-2 focus:ring-indigo-500 disabled:opacity-50 disabled:cursor-not-allowed text-black">
                                    <span className="block truncate font-medium text-black">
                                      {STATUS_OPTIONS.find(opt => opt.value === selectedStatus)?.label || selectedStatus}
                                    </span>
                                    <span className="pointer-events-none absolute inset-y-0 right-0 flex items-center pr-2">
                                      <ChevronUpDownIcon className="h-5 w-5 text-gray-400" aria-hidden="true" />
                                    </span>
                                  </Listbox.Button>
                                  <Transition
                                    as={Fragment}
                                    leave="transition ease-in duration-100"
                                    leaveFrom="opacity-100"
                                    leaveTo="opacity-0"
                                  >
                                    <Listbox.Options className="absolute z-10 mt-1 max-h-60 w-full overflow-auto rounded-md bg-white py-1 text-base shadow-lg ring-1 ring-black ring-opacity-5 focus:outline-none sm:text-sm">
                                      {STATUS_OPTIONS.map((option) => (
                                        <Listbox.Option
                                          key={option.value}
                                          className={({ active }) =>
                                            `relative cursor-pointer select-none py-2 pl-10 pr-4 ${
                                              active ? 'bg-indigo-100 text-indigo-900' : 'text-gray-900'
                                            }`
                                          }
                                          value={option.value}
                                        >
                                          {({ selected }) => (
                                            <>
                                              <span className={`block truncate ${selected ? 'font-semibold' : 'font-normal'}`}>
                                                {option.label}
                                              </span>
                                              {selected && (
                                                <span className="absolute inset-y-0 left-0 flex items-center pl-3 text-indigo-600">
                                                  <CheckIcon className="h-5 w-5" aria-hidden="true" />
                                                </span>
                                              )}
                                            </>
                                          )}
                                        </Listbox.Option>
                                      ))}
                                    </Listbox.Options>
                                  </Transition>
                                </div>
                              </Listbox>
                            </div>

                            {/* Admin Verification Toggle */}
                            <div>
                              <label className="block text-sm font-medium text-gray-700 mb-2">
                                Admin Verification
                              </label>
                              {userDetails?.userStatus && (
                                <p className="text-xs text-gray-500 mb-2">
                                  {canVerify
                                    ? 'All steps completed. You can verify this user.'
                                    : 'User has not yet completed all required steps.'}
                                </p>
                              )}
                              <button
                                type="button"
                                onClick={handleToggleAdminVerification}
                                disabled={saving || !canVerify}
                                title={!canVerify ? 'Complete all steps and ensure files are present in object storage before admin verification' : undefined}
                                className={`w-full inline-flex items-center justify-center gap-2 rounded-lg px-4 py-2.5 text-sm font-semibold shadow-sm focus-visible:outline focus-visible:outline-offset-2 disabled:opacity-50 disabled:cursor-not-allowed ${
                                  userDetails.userStatus?.is_admin_verified === 1
                                    ? 'bg-amber-600 hover:bg-amber-500 text-white focus-visible:outline-amber-600'
                                    : 'bg-green-600 hover:bg-green-500 text-white focus-visible:outline-green-600'
                                }`}
                              >
                                {saving ? (
                                  <>
                                    <div className="h-4 w-4 border-2 border-white border-b-transparent rounded-full animate-spin" />
                                    Updating...
                                  </>
                                ) : (
                                  <>
                                    <ShieldCheckIcon className="h-4 w-4" />
                                    {userDetails.userStatus?.is_admin_verified === 1 ? 'Unverify User' : 'Verify User'}
                                  </>
                                )}
                              </button>
                            </div>
                          </div>
                        </div>

                        {/* Contract Preview (admin verify flow) */}
                        <div className="bg-white rounded-lg border border-gray-200 overflow-hidden">
                          <div className="bg-gray-50 px-6 py-4 border-b border-gray-200 flex items-center justify-between">
                            <div className="flex items-center gap-3">
                              <DocumentTextIcon className="h-5 w-5 text-gray-600" />
                              <div className="flex items-center gap-2">
                                <span className="text-lg font-semibold text-gray-900">Contract Preview</span>
                                <div className="flex items-center gap-1 rounded-full border border-gray-200 bg-white px-1">
                                  {(['contract','gdpr'] as const).map((tab) => (
                                    <button
                                      key={tab}
                                      type="button"
                                      onClick={() => setActivePreviewTab(tab)}
                                      className={`px-2.5 py-1 text-xs rounded-full transition ${activePreviewTab === tab ? 'bg-indigo-600 text-white shadow' : 'text-gray-700 hover:bg-gray-100'}`}
                                    >
                                      {tab === 'contract' ? 'Contract' : 'GDPR'}
                                    </button>
                                  ))}
                                </div>
                              </div>
                            </div>
                            <div className="flex items-center gap-2">
                              <button
                                type="button"
                                onClick={() => {
                                  const files = contractFiles[activePreviewTab] || []
                                  const selectedKey = selectedFile[activePreviewTab] || files[0]?.key
                                  const item = files.find((f) => f.key === selectedKey) || files[0]
                                  loadContractPreview(activePreviewTab, item?.documentId || undefined, item?.key)
                                }}
                                disabled={previewState[activePreviewTab].loading}
                                className="inline-flex items-center justify-center rounded-md bg-indigo-600 hover:bg-indigo-500 text-white px-3 py-2 text-sm disabled:opacity-60"
                              >
                                {previewState[activePreviewTab].loading ? 'Loading…' : 'Preview'}
                              </button>
                              <button
                                type="button"
                                onClick={() => {
                                  const current = previewState[activePreviewTab];
                                  if (!current?.html) return;
                                  const blob = new Blob([current.html], { type: 'text/html' });
                                  const url = URL.createObjectURL(blob);
                                  window.open(url, '_blank', 'noopener,noreferrer');
                                }}
                                disabled={!previewState[activePreviewTab]?.html}
                                className="inline-flex items-center justify-center rounded-md bg-gray-100 hover:bg-gray-200 text-gray-900 px-3 py-2 text-sm disabled:opacity-60"
                              >
                                Open in new tab
                              </button>
                            </div>
                          </div>
                          <div className="px-6 py-5">
                            {(() => {
                              const files = contractFiles[activePreviewTab] || []
                              const selectedKey = selectedFile[activePreviewTab] || files[0]?.key
                              const selectedItem = files.find((f) => f.key === selectedKey) || files[0]
                              const moveTarget = activePreviewTab === 'contract' ? 'gdpr' : 'contract'
                              const isMoving = selectedItem?.key ? !!moveLoading[selectedItem.key] : false
                              return (
                                <div className="mb-4">
                                  <div className="flex items-center justify-between gap-2">
                                    <div className="text-sm font-semibold text-gray-900">Files in {activePreviewTab.toUpperCase()}</div>
                                    <button
                                      type="button"
                                      onClick={() => loadContractFiles()}
                                      disabled={docsLoading}
                                      className="inline-flex items-center justify-center rounded-md bg-gray-100 hover:bg-gray-200 text-gray-900 px-3 py-1.5 text-xs disabled:opacity-60"
                                    >
                                      {docsLoading ? 'Refreshing…' : 'Refresh'}
                                    </button>
                                  </div>

                                  {docsLoading && (
                                    <div className="mt-2 text-xs text-gray-500">Loading files…</div>
                                  )}

                                  {!docsLoading && files.length === 0 && (
                                    <div className="mt-2 text-xs text-gray-500">No files found in this folder.</div>
                                  )}

                                  {!docsLoading && files.length > 0 && (
                                    <>
                                      {files.length > 1 && (
                                        <div className="mt-2 flex flex-wrap gap-2">
                                          {files.map((f) => (
                                            <button
                                              key={f.key}
                                              type="button"
                                              onClick={() => {
                                                setSelectedFile((prev) => ({ ...prev, [activePreviewTab]: f.key }))
                                                loadContractPreview(activePreviewTab, f.documentId || undefined, f.key)
                                              }}
                                              className={`px-2.5 py-1 text-xs rounded-md border transition ${selectedKey === f.key ? 'bg-indigo-600 text-white border-indigo-600' : 'bg-white text-gray-700 border-gray-200 hover:bg-gray-50'}`}
                                            >
                                              {f.filename}
                                            </button>
                                          ))}
                                        </div>
                                      )}

                                      {selectedItem && (
                                        <div className="mt-2 flex flex-col sm:flex-row sm:items-center sm:justify-between gap-2 text-xs text-gray-600">
                                          <div className="truncate">Selected: {selectedItem.filename}</div>
                                          {files.length >= 1 && (
                                            <button
                                              type="button"
                                              onClick={() => moveContractDoc(selectedItem.documentId || undefined, moveTarget as 'contract' | 'gdpr', selectedItem.filename, selectedItem.key)}
                                              disabled={isMoving}
                                              className="inline-flex items-center justify-center rounded-md bg-gray-100 hover:bg-gray-200 text-gray-900 px-3 py-1.5 text-xs disabled:opacity-60"
                                            >
                                              {isMoving ? 'Moving…' : `Move to ${moveTarget.toUpperCase()}`}
                                            </button>
                                          )}
                                        </div>
                                      )}
                                    </>
                                  )}
                                </div>
                              )
                            })()}
                            {previewState[activePreviewTab].warning && (
                              <div className="rounded-md border border-amber-200 bg-amber-50 px-4 py-3 text-sm text-amber-800 mb-4">
                                {previewState[activePreviewTab].warning}
                              </div>
                            )}
                            {previewState[activePreviewTab].error && (
                              <div className="rounded-md border border-red-200 bg-red-50 px-4 py-3 text-sm text-red-700 mb-4">
                                {previewState[activePreviewTab].error}
                              </div>
                            )}
                            {previewState[activePreviewTab].loading && (
                              <div className="flex items-center justify-center h-40 text-sm text-gray-500">
                                Loading preview…
                              </div>
                            )}
                            {!previewState[activePreviewTab].loading && previewState[activePreviewTab].html && (
                              <div className="rounded-md border border-gray-200 overflow-hidden">
                                <iframe
                                  title={`Contract Preview ${activePreviewTab}`}
                                  className="w-full h-[600px] bg-white"
                                  srcDoc={previewState[activePreviewTab].html || ''}
                                />
                              </div>
                            )}
                            {!previewState[activePreviewTab].loading && !previewState[activePreviewTab].html && !previewState[activePreviewTab].error && (
                              <p className="text-sm text-gray-500">Click “Preview” to render the latest template for this user.</p>
                            )}
                          </div>
                        </div>

                        {/* Profile Information */}
                        {userDetails.user.user_type === 'personal' && userDetails.personalProfile && (
                          <div className="bg-white rounded-lg border border-gray-200 overflow-hidden">
                            <div className="bg-gray-50 px-6 py-4 border-b border-gray-200">
                              <h3 className="text-lg font-semibold text-gray-900 flex items-center gap-2">
                                <UserIcon className="h-5 w-5 text-gray-600" />
                                Personal Information
                              </h3>
                            </div>
                            <div className="px-6 py-5">
                              <dl className="grid grid-cols-1 md:grid-cols-2 gap-x-6 gap-y-5">
                                <div>
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">First Name</dt>
                                  <dd className="text-sm text-gray-900 font-medium">{userDetails.personalProfile.first_name || 'N/A'}</dd>
                                </div>
                                <div>
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">Last Name</dt>
                                  <dd className="text-sm text-gray-900 font-medium">{userDetails.personalProfile.last_name || 'N/A'}</dd>
                                </div>
                                <div>
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">
                                    <PhoneIcon className="h-4 w-4 inline mr-1.5" />
                                    Phone
                                  </dt>
                                  <dd className="text-sm text-gray-900 font-medium">{userDetails.personalProfile.phone || 'N/A'}</dd>
                                </div>
                                <div>
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">
                                    <CalendarIcon className="h-4 w-4 inline mr-1.5" />
                                    Date of Birth
                                  </dt>
                                  <dd className="text-sm text-gray-900 font-medium">{formatDate(userDetails.personalProfile.date_of_birth)}</dd>
                                </div>
                                <div className="md:col-span-2">
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">
                                    <MapPinIcon className="h-4 w-4 inline mr-1.5" />
                                    Address
                                  </dt>
                                  <dd className="text-sm text-gray-900 font-medium">
                                    {userDetails.personalProfile.address || 'N/A'}
                                    {userDetails.personalProfile.city && <>, {userDetails.personalProfile.city}</>}
                                    {userDetails.personalProfile.zip_code && <>, {userDetails.personalProfile.zip_code}</>}
                                    {userDetails.personalProfile.country && <>, {userDetails.personalProfile.country}</>}
                                  </dd>
                                </div>
                              </dl>
                            </div>
                          </div>
                        )}

                        {/* Company Profile Information */}
                        {userDetails.user.user_type === 'company' && userDetails.companyProfile && (
                          <div className="bg-white rounded-lg border border-gray-200 overflow-hidden">
                            <div className="bg-gray-50 px-6 py-4 border-b border-gray-200">
                              <h3 className="text-lg font-semibold text-gray-900 flex items-center gap-2">
                                <BuildingOfficeIcon className="h-5 w-5 text-gray-600" />
                                Company Information
                              </h3>
                            </div>
                            <div className="px-6 py-5">
                              <dl className="grid grid-cols-1 md:grid-cols-2 gap-x-6 gap-y-5">
                                <div>
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">Company Name</dt>
                                  <dd className="text-sm text-gray-900 font-medium">{userDetails.companyProfile.company_name || 'N/A'}</dd>
                                </div>
                                <div>
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">Registration Number</dt>
                                  <dd className="text-sm text-gray-900 font-medium">{userDetails.companyProfile.registration_number || 'N/A'}</dd>
                                </div>
                                <div>
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">Tax ID</dt>
                                  <dd className="text-sm text-gray-900 font-medium">{userDetails.companyProfile.tax_id || 'N/A'}</dd>
                                </div>
                                <div>
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">
                                    <PhoneIcon className="h-4 w-4 inline mr-1.5" />
                                    Phone
                                  </dt>
                                  <dd className="text-sm text-gray-900 font-medium">{userDetails.companyProfile.phone || 'N/A'}</dd>
                                </div>
                                <div className="md:col-span-2">
                                  <dt className="text-sm font-medium text-gray-500 mb-1.5">
                                    <MapPinIcon className="h-4 w-4 inline mr-1.5" />
                                    Address
                                  </dt>
                                  <dd className="text-sm text-gray-900 font-medium">
                                    {userDetails.companyProfile.address || 'N/A'}
                                    {userDetails.companyProfile.city && <>, {userDetails.companyProfile.city}</>}
                                    {userDetails.companyProfile.zip_code && <>, {userDetails.companyProfile.zip_code}</>}
                                    {userDetails.companyProfile.country && <>, {userDetails.companyProfile.country}</>}
                                  </dd>
                                </div>
                              </dl>
                            </div>
                          </div>
                        )}

                        {/* Account Status */}
                        {userDetails.userStatus && (
                          <div className="bg-white rounded-lg border border-gray-200 overflow-hidden">
                            <div className="bg-gray-50 px-6 py-4 border-b border-gray-200">
                              <h3 className="text-lg font-semibold text-gray-900 flex items-center gap-2">
                                <CheckCircleIcon className="h-5 w-5 text-gray-600" />
                                Registration Progress
                              </h3>
                            </div>
                            <div className="px-6 py-5">
                              <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                                <div className="flex items-center gap-3">
                                  {userDetails.userStatus.email_verified === 1 ? (
                                    <CheckCircleIcon className="h-6 w-6 text-green-500" />
                                  ) : (
                                    <XCircleIcon className="h-6 w-6 text-gray-300" />
                                  )}
                                  <span className="text-sm font-medium text-gray-700">Email Verified</span>
                                </div>
                                <div className="flex items-center gap-3">
                                  {userDetails.userStatus.profile_completed === 1 ? (
                                    <CheckCircleIcon className="h-6 w-6 text-green-500" />
                                  ) : (
                                    <XCircleIcon className="h-6 w-6 text-gray-300" />
                                  )}
                                  <span className="text-sm font-medium text-gray-700">Profile Completed</span>
                                </div>
                                <div className="flex items-center gap-3">
                                  {userDetails.userStatus.documents_uploaded === 1 ? (
                                    <CheckCircleIcon className="h-6 w-6 text-green-500" />
                                  ) : (
                                    <XCircleIcon className="h-6 w-6 text-gray-300" />
                                  )}
                                  <span className="text-sm font-medium text-gray-700">Documents Uploaded</span>
                                </div>
                                <div className="flex items-center gap-3">
                                  {userDetails.userStatus.contract_signed === 1 ? (
                                    <CheckCircleIcon className="h-6 w-6 text-green-500" />
                                  ) : (
                                    <XCircleIcon className="h-6 w-6 text-gray-300" />
                                  )}
                                  <span className="text-sm font-medium text-gray-700">Contract Signed</span>
                                </div>
                              </div>
                            </div>
                          </div>
                        )}

                        {/* Permissions */}
                        {userDetails.permissions.length > 0 && (
                          <div className="bg-white rounded-lg border border-gray-200 overflow-hidden">
                            <div className="bg-gray-50 px-6 py-4 border-b border-gray-200">
                              <h3 className="text-lg font-semibold text-gray-900 flex items-center gap-2">
                                <ShieldCheckIcon className="h-5 w-5 text-gray-600" />
                                Permissions ({userDetails.permissions.length})
                              </h3>
                            </div>
                            <div className="px-6 py-5">
                              <div className="grid grid-cols-1 md:grid-cols-2 gap-3">
                                {userDetails.permissions.map((perm) => (
                                  <div
                                    key={perm.id}
                                    className={`flex items-center gap-3 p-3 rounded-lg border ${
                                      perm.is_active
                                        ? 'bg-green-50 border-green-200'
                                        : 'bg-gray-50 border-gray-200'
                                    }`}
                                  >
                                    {perm.is_active ? (
                                      <CheckCircleIcon className="h-5 w-5 text-green-600 flex-shrink-0" />
                                    ) : (
                                      <XCircleIcon className="h-5 w-5 text-gray-400 flex-shrink-0" />
                                    )}
                                    <div>
                                      <div className="text-sm font-medium text-gray-900">{perm.name}</div>
                                      {perm.description && (
                                        <div className="text-xs text-gray-500 mt-0.5">{perm.description}</div>
                                      )}
                                    </div>
                                  </div>
                                ))}
                              </div>
                            </div>
                          </div>
                        )}

                        {/* Action Buttons */}
                        <div className="flex justify-end gap-3 pt-4">
                          <button
                            type="button"
                            onClick={onClose}
                            className="inline-flex items-center justify-center gap-2 rounded-lg bg-gray-200 px-4 py-2.5 text-sm font-semibold text-gray-900 shadow-sm hover:bg-gray-300 focus-visible:outline focus-visible:outline-offset-2 focus-visible:outline-gray-500"
                          >
                            Close
                          </button>
                        </div>
                      </div>
                    ) : null}
                  </div>
                </div>
              </Dialog.Panel>
            </Transition.Child>
          </div>
        </div>
      </Dialog>
    </Transition.Root>
  )
}