"use client"

import { useEffect, useMemo, useState } from "react"
import { Icon } from "@iconify/react"
import {
  Building2,
  Copy,
  Eye,
  Link2,
  Loader2,
  Mail,
  Pencil,
  RefreshCw,
  Shield,
  SlidersHorizontal,
  Trash2,
  UserRound,
  Users,
} from "lucide-react"
import { toast } from "sonner"
import { Button } from "@/components/ui/button"
import { Checkbox } from "@/components/ui/checkbox"
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"
import { Textarea } from "@/components/ui/textarea"
import { useSearchContacts } from "@/lib/api/hooks/use-contact-queries"
import { useDriveShares, useDriveMutations } from "@/lib/api/hooks/use-drive-queries"
import type { DriveFileInfo, DriveShare } from "@/lib/api/types"
import { displayFileName } from "@/lib/drive/display-file-name"
import {
  FOLDER_SHARE_PERMISSION_OPTIONS,
  folderPermissionsFromRole,
  folderPermissionsToBitmask,
  type FolderSharePermissionId,
  type FolderSharePermissions,
} from "@/lib/drive/drive-share-permissions"
import {
  NC_SHARE_TYPE,
  SHARE_SECTION_LABELS,
  groupSharesBySection,
  shareAccessLabel,
  shareLinkForCopy,
  shareMetaLine,
  shareOwnerLabel,
  shareRecipientLabel,
  type DriveShareMode,
  type ShareListSection,
} from "@/lib/drive/drive-share-types"
import { DriveFileTypeIcon } from "@/lib/drive/drive-file-icon"
import { useDriveUIStore } from "@/lib/stores/drive-ui-store"
import {
  DRIVE_BTN_GHOST,
  DRIVE_BTN_PRIMARY,
  DRIVE_CARD_ACTIVE,
  DRIVE_CARD_IDLE,
  DRIVE_DIALOG_CONTENT,
  DRIVE_DIALOG_DIVIDER,
  DRIVE_DIALOG_FOOTER,
  DRIVE_DIALOG_HEADER,
  DRIVE_DIALOG_OVERLAY,
  DRIVE_FIELD_CLASS,
  DRIVE_LABEL_CLASS,
  DRIVE_PANEL_MUTED,
  DRIVE_TEXT_PRIMARY,
  DRIVE_TEXT_SECONDARY,
  DRIVE_TEXT_TITLE,
  DRIVE_TEXTAREA_CLASS,
} from "@/lib/drive/drive-dialog-styles"
import { cn } from "@/lib/utils"

function shareItemLabel(path: string) {
  const trimmed = path.replace(/\/+$/, "")
  const base = trimmed.slice(trimmed.lastIndexOf("/") + 1)
  return displayFileName(base || path)
}

type SharePermissionMode = "viewer" | "editor" | "advanced"

const PERMISSION_MODE_OPTIONS: {
  id: SharePermissionMode
  label: string
  description: string
  icon: typeof Eye
  folderOnly?: boolean
}[] = [
  {
    id: "viewer",
    label: "Lecteur",
    description: "Consultation uniquement",
    icon: Eye,
  },
  {
    id: "editor",
    label: "Éditeur",
    description: "Peut modifier le contenu",
    icon: Pencil,
  },
  {
    id: "advanced",
    label: "Avancé",
    description: "Définir chaque autorisation",
    icon: SlidersHorizontal,
    folderOnly: true,
  },
]

const MODE_OPTIONS: {
  id: DriveShareMode
  label: string
  description: string
  icon: typeof Link2
}[] = [
  {
    id: "contact",
    label: "Personne",
    description: "Partage direct par e-mail ou compte",
    icon: UserRound,
  },
  {
    id: "internal",
    label: "Lien interne",
    description: "Réservé aux utilisateurs inscrits connectés",
    icon: Users,
  },
  {
    id: "public",
    label: "Lien public",
    description: "Accessible à toute personne disposant du lien",
    icon: Link2,
  },
]

function shareSectionIcon(section: ShareListSection) {
  if (section === "people") return UserRound
  if (section === "groups") return Building2
  return Link2
}

function ShareEntryRow({
  share,
  onDelete,
  deleting,
}: {
  share: DriveShare
  onDelete: () => void
  deleting: boolean
}) {
  const url = shareLinkForCopy(share)
  const recipient = shareRecipientLabel(share)
  const owner = shareOwnerLabel(share)
  const meta = shareMetaLine(share)
  const accessLabel = shareAccessLabel(share)
  const isLink = share.share_type === NC_SHARE_TYPE.LINK

  const copy = async () => {
    if (!url) return
    try {
      await navigator.clipboard.writeText(url)
      toast.success("Lien copié")
    } catch {
      toast.error("Impossible de copier le lien")
    }
  }

  const primaryLine = recipient ?? (url && isLink ? url : accessLabel)

  return (
    <div className={cn(DRIVE_PANEL_MUTED, "rounded-xl px-3 py-3")}>
      <div className="flex items-start gap-3">
        <div className="min-w-0 flex-1 space-y-1.5">
          <div className="flex flex-wrap items-center gap-2">
            <span className="inline-flex items-center rounded-md bg-[#e8f0fe] px-2 py-0.5 text-[11px] font-medium text-[#1967d2] dark:bg-[#1a377a]/50 dark:text-[#8ab4f8]">
              {accessLabel}
            </span>
            {share.has_password ? (
              <span className="inline-flex items-center gap-1 text-[11px] text-[#5f6368] dark:text-[#9aa0a6]">
                <Shield className="h-3 w-3" aria-hidden />
                Mot de passe
              </span>
            ) : null}
          </div>

          <p className={cn("text-sm font-medium leading-snug", DRIVE_TEXT_PRIMARY)}>
            {primaryLine}
          </p>

          {url && isLink && recipient ? (
            <p className={cn("truncate text-xs", DRIVE_TEXT_SECONDARY)}>{url}</p>
          ) : null}

          {owner ? (
            <p className={cn("text-xs", DRIVE_TEXT_SECONDARY)}>
              Propriétaire · {owner}
            </p>
          ) : null}

          <p className={cn("text-xs capitalize", DRIVE_TEXT_SECONDARY)}>{meta}</p>

          {share.note?.trim() ? (
            <p className={cn("border-t pt-1.5 text-xs italic", DRIVE_DIALOG_DIVIDER, DRIVE_TEXT_SECONDARY)}>
              « {share.note.trim()} »
            </p>
          ) : null}
        </div>

        <div className="flex shrink-0 items-start gap-0.5">
          {url ? (
            <Button
              type="button"
              variant="ghost"
              size="icon-sm"
              className={DRIVE_BTN_GHOST}
              aria-label="Copier le lien"
              onClick={() => void copy()}
            >
              <Copy className="h-4 w-4" />
            </Button>
          ) : null}
          <Button
            type="button"
            variant="ghost"
            size="icon-sm"
            className={cn(DRIVE_TEXT_SECONDARY, "hover:bg-[#fce8e6] hover:text-[#d93025] dark:hover:bg-[#5c2b29]/50")}
            aria-label="Supprimer le partage"
            disabled={deleting}
            onClick={onDelete}
          >
            {deleting ? <Loader2 className="h-4 w-4 animate-spin" /> : <Trash2 className="h-4 w-4" />}
          </Button>
        </div>
      </div>
    </div>
  )
}

function ActiveSharesPanel({
  shares,
  loading,
  error,
  onRetry,
  deletingShareId,
  onDeleteShare,
}: {
  shares: DriveShare[]
  loading: boolean
  error: boolean
  onRetry: () => void
  deletingShareId: string | null
  onDeleteShare: (shareId: string) => void
}) {
  const grouped = useMemo(() => groupSharesBySection(shares), [shares])
  const sectionOrder: ShareListSection[] = ["links", "people", "groups"]
  const hasShares = shares.length > 0

  return (
    <div className="space-y-3 border-t pt-4">
      <div className="flex items-center justify-between gap-2">
        <p className={cn("text-sm font-medium", DRIVE_TEXT_PRIMARY)}>Accès existants</p>
        {!loading ? (
          <Button
            type="button"
            variant="ghost"
            size="sm"
            className={cn(DRIVE_BTN_GHOST, "h-8 px-2 text-xs")}
            onClick={onRetry}
          >
            <RefreshCw className="h-3.5 w-3.5" aria-hidden />
            Actualiser
          </Button>
        ) : null}
      </div>

      {loading ? (
        <div className={cn("flex items-center gap-2 text-sm", DRIVE_TEXT_SECONDARY)}>
          <Loader2 className="h-4 w-4 animate-spin" aria-hidden />
          Chargement des partages…
        </div>
      ) : error ? (
        <div className={cn(DRIVE_PANEL_MUTED, "space-y-2 rounded-xl px-3 py-3")}>
          <p className={cn("text-sm", DRIVE_TEXT_PRIMARY)}>Impossible de charger les partages existants.</p>
          <Button
            type="button"
            variant="ghost"
            size="sm"
            className={cn(DRIVE_BTN_GHOST, "h-8 px-2 text-xs")}
            onClick={onRetry}
          >
            <RefreshCw className="h-3.5 w-3.5" aria-hidden />
            Réessayer
          </Button>
        </div>
      ) : !hasShares ? (
        <p className={cn("text-sm", DRIVE_TEXT_SECONDARY)}>
          Aucun partage actif pour cet élément. Créez un lien ou invitez une personne ci-dessus.
        </p>
      ) : (
        <div className="max-h-52 space-y-4 overflow-y-auto pr-0.5">
          {sectionOrder.map((section) => {
            const items = grouped[section]
            if (items.length === 0) return null
            const SectionIcon = shareSectionIcon(section)
            return (
              <div key={section} className="space-y-2">
                <p className={cn("flex items-center gap-1.5 text-xs font-medium uppercase tracking-wide", DRIVE_TEXT_SECONDARY)}>
                  <SectionIcon className="h-3.5 w-3.5" aria-hidden />
                  {SHARE_SECTION_LABELS[section]}
                  <span className="font-normal normal-case tracking-normal">({items.length})</span>
                </p>
                <div className="space-y-2">
                  {items.map((share) => (
                    <ShareEntryRow
                      key={share.id}
                      share={share}
                      deleting={deletingShareId === share.id}
                      onDelete={() => onDeleteShare(share.id)}
                    />
                  ))}
                </div>
              </div>
            )
          })}
        </div>
      )}
    </div>
  )
}

function SharePermissionsPanel({
  isFolder,
  permissionMode,
  folderPermissions,
  onPermissionModeChange,
  onFolderPermissionChange,
}: {
  isFolder: boolean
  permissionMode: SharePermissionMode
  folderPermissions: FolderSharePermissions
  onPermissionModeChange: (mode: SharePermissionMode) => void
  onFolderPermissionChange: (id: FolderSharePermissionId, checked: boolean) => void
}) {
  const advancedPermissionBits = folderPermissionsToBitmask(folderPermissions)
  const modeOptions = PERMISSION_MODE_OPTIONS.filter((option) => isFolder || !option.folderOnly)

  return (
    <div className="space-y-2.5">
      <div className={cn("grid gap-2", isFolder ? "grid-cols-3" : "grid-cols-2")}>
        {modeOptions.map((option) => {
          const IconComponent = option.icon
          const selected = permissionMode === option.id
          return (
            <button
              key={option.id}
              type="button"
              onClick={() => onPermissionModeChange(option.id)}
              className={cn(
                "flex cursor-pointer flex-col items-start gap-1 rounded-xl border px-3 py-3 text-left transition-colors",
                selected ? DRIVE_CARD_ACTIVE : DRIVE_CARD_IDLE
              )}
            >
              <span className="flex items-center gap-2">
                <IconComponent
                  className={cn(
                    "h-4 w-4",
                    selected ? "text-[#1967d2] dark:text-[#8ab4f8]" : DRIVE_TEXT_SECONDARY
                  )}
                  aria-hidden
                />
                <span
                  className={cn(
                    "text-sm font-medium",
                    selected ? "text-[#1967d2] dark:text-[#8ab4f8]" : DRIVE_TEXT_PRIMARY
                  )}
                >
                  {option.label}
                </span>
              </span>
              <span className={cn("text-xs", DRIVE_TEXT_SECONDARY)}>{option.description}</span>
            </button>
          )
        })}
      </div>

      {isFolder && permissionMode === "advanced" ? (
        <div className={cn(DRIVE_PANEL_MUTED, "space-y-2 px-3 py-3")}>
          {FOLDER_SHARE_PERMISSION_OPTIONS.map((option) => {
            const checked = folderPermissions[option.id]
            const checkboxId = `drive-share-perm-${option.id}`
            return (
              <div key={option.id} className="flex items-center gap-3 rounded-lg py-1">
                <Checkbox
                  id={checkboxId}
                  checked={checked}
                  onCheckedChange={(value) =>
                    onFolderPermissionChange(option.id, value === true)
                  }
                />
                <Label
                  htmlFor={checkboxId}
                  className={cn("cursor-pointer text-sm font-normal", DRIVE_TEXT_PRIMARY)}
                >
                  {option.label}
                </Label>
              </div>
            )
          })}
          {!folderPermissions.viewContent && folderPermissions.addFiles ? (
            <p className={cn("border-t pt-2 text-xs leading-relaxed", DRIVE_DIALOG_DIVIDER, DRIVE_TEXT_SECONDARY)}>
              Dépôt uniquement : les visiteurs pourront ajouter des fichiers sans voir le contenu
              existant du dossier.
            </p>
          ) : null}
          {advancedPermissionBits === 0 ? (
            <p className="text-xs text-[#d93025]" role="alert">
              Sélectionnez au moins une autorisation.
            </p>
          ) : null}
        </div>
      ) : null}
    </div>
  )
}

export function ShareDialog() {
  const path = useDriveUIStore((s) => s.sharePath)
  const shareItemType = useDriveUIStore((s) => s.shareItemType)
  const setSharePath = useDriveUIStore((s) => s.setSharePath)
  const [mode, setMode] = useState<DriveShareMode>("public")
  const [permissionMode, setPermissionMode] = useState<SharePermissionMode>("viewer")
  const [folderPermissions, setFolderPermissions] = useState<FolderSharePermissions>(
    () => folderPermissionsFromRole("viewer")
  )
  const [contactEmail, setContactEmail] = useState("")
  const [contactQuery, setContactQuery] = useState("")
  const [contactNote, setContactNote] = useState("")
  const [recipientRegistered, setRecipientRegistered] = useState<boolean | null>(null)
  const [deletingShareId, setDeletingShareId] = useState<string | null>(null)

  const { data, isLoading: sharesLoading, isError: sharesError, refetch: refetchShares } = useDriveShares(
    path ?? "",
    Boolean(path)
  )
  const { createShare, deleteShare, lookupShareRecipient } = useDriveMutations()
  const lookupRecipientEmail = lookupShareRecipient.mutateAsync
  const { data: contactResults = [] } = useSearchContacts(contactQuery)

  const itemLabel = useMemo(() => (path ? shareItemLabel(path) : ""), [path])
  const isFolder = shareItemType === "directory"
  const selectedMode = MODE_OPTIONS.find((m) => m.id === mode) ?? MODE_OPTIONS[0]

  const filePreview = useMemo((): DriveFileInfo | null => {
    if (!path) return null
    return {
      path,
      name: itemLabel,
      type: shareItemType ?? "file",
      size: 0,
      mime_type: "",
      last_modified: "",
      etag: "",
      is_favorite: false,
    }
  }, [path, itemLabel, shareItemType])

  useEffect(() => {
    if (path) {
      setMode("public")
      setPermissionMode("viewer")
      setFolderPermissions(folderPermissionsFromRole("viewer"))
      setContactEmail("")
      setContactQuery("")
      setContactNote("")
      setRecipientRegistered(null)
    }
  }, [path])

  useEffect(() => {
    const email = contactEmail.trim().toLowerCase()
    if (mode !== "contact" || !email.includes("@")) {
      setRecipientRegistered(null)
      return
    }
    const timer = window.setTimeout(() => {
      lookupRecipientEmail(email)
        .then((res) => setRecipientRegistered(res.registered))
        .catch(() => setRecipientRegistered(null))
    }, 350)
    return () => window.clearTimeout(timer)
  }, [contactEmail, mode, lookupRecipientEmail])

  const advancedPermissionBits = folderPermissionsToBitmask(folderPermissions)
  const canCreateShare =
    (mode !== "contact" || contactEmail.trim().includes("@")) &&
    (!isFolder || permissionMode !== "advanced" || advancedPermissionBits > 0)

  const setFolderPermission = (id: FolderSharePermissionId, checked: boolean) => {
    setFolderPermissions((prev) => ({ ...prev, [id]: checked }))
  }

  const onPermissionModeChange = (nextMode: SharePermissionMode) => {
    setPermissionMode(nextMode)
    if (nextMode === "advanced") {
      setFolderPermissions(folderPermissionsFromRole(permissionMode === "editor" ? "editor" : "viewer"))
    }
  }

  const close = () => setSharePath(null, null)

  const sharePayload = () => {
    const base =
      isFolder && permissionMode === "advanced"
        ? { path: path!, permissions: advancedPermissionBits }
        : { path: path!, role: permissionMode === "editor" ? "editor" : "viewer" }
    return base
  }

  const onShare = async () => {
    if (!path || !canCreateShare) return
    try {
      const payload = sharePayload()
      const share = await createShare.mutateAsync({
        ...payload,
        mode,
        ...(mode === "contact"
          ? {
              share_with: contactEmail.trim().toLowerCase(),
              note: contactNote.trim() || undefined,
              send_mail: true,
            }
          : {}),
      })

      if (mode === "contact") {
        if (share.access_mode === "user" || share.share_type === NC_SHARE_TYPE.USER) {
          toast.success("Partagé — visible dans « Partagés avec moi » du destinataire")
        } else {
          toast.success("Invitation envoyée par e-mail avec un lien public")
        }
        setContactEmail("")
        setContactNote("")
        setContactQuery("")
      } else {
        const link = shareLinkForCopy(share)
        if (link) {
          await navigator.clipboard.writeText(link)
          toast.success(
            mode === "internal"
              ? "Lien interne copié dans le presse-papiers"
              : "Lien public copié dans le presse-papiers"
          )
        } else {
          toast.success("Partage créé")
        }
      }
      void refetchShares()
    } catch {
      toast.error("Partage impossible")
    }
  }

  const onDeleteShare = async (shareId: string) => {
    setDeletingShareId(shareId)
    try {
      await deleteShare.mutateAsync(shareId)
      toast.success("Partage supprimé")
      void refetchShares()
    } catch {
      toast.error("Suppression impossible")
    } finally {
      setDeletingShareId(null)
    }
  }

  const existingShares = data?.shares ?? []

  const actionLabel =
    mode === "contact"
      ? "Partager"
      : mode === "internal"
        ? "Créer le lien interne"
        : "Créer le lien public"

  return (
    <Dialog open={Boolean(path)} onOpenChange={(open) => !open && close()}>
      <DialogContent
        overlayClassName={DRIVE_DIALOG_OVERLAY}
        className={cn(DRIVE_DIALOG_CONTENT, "sm:max-w-[520px]")}
      >
        <DialogHeader className={cn(DRIVE_DIALOG_HEADER, "space-y-4")}>
          <div className="flex items-start gap-3 pr-8">
            {filePreview ? (
              <div className="flex h-11 w-11 shrink-0 items-center justify-center rounded-xl bg-[#f1f3f4] dark:bg-[#35363a]">
                <DriveFileTypeIcon file={filePreview} size="md" />
              </div>
            ) : (
              <div className="flex h-11 w-11 shrink-0 items-center justify-center rounded-xl bg-[#e8f0fe] text-[#1967d2] dark:bg-[#1a377a]/50 dark:text-[#8ab4f8]">
                <Icon icon="mdi:link-variant" className="h-5 w-5" aria-hidden />
              </div>
            )}
            <div className="min-w-0 flex-1">
              <DialogTitle className={cn("text-base font-medium", DRIVE_TEXT_TITLE)}>
                {isFolder ? "Partager le dossier" : "Partager le fichier"}
              </DialogTitle>
              <DialogDescription className={cn("mt-1 truncate text-sm", DRIVE_TEXT_SECONDARY)}>
                {itemLabel}
              </DialogDescription>
            </div>
          </div>
        </DialogHeader>

        <div className="max-h-[min(70vh,560px)] space-y-5 overflow-y-auto px-6 py-5">
          <div className="grid grid-cols-3 gap-2">
            {MODE_OPTIONS.map((option) => {
              const IconComponent = option.icon
              const selected = mode === option.id
              return (
                <button
                  key={option.id}
                  type="button"
                  onClick={() => setMode(option.id)}
                  className={cn(
                    "flex cursor-pointer flex-col items-start gap-1 rounded-xl border px-2.5 py-2.5 text-left transition-colors",
                    selected ? DRIVE_CARD_ACTIVE : DRIVE_CARD_IDLE
                  )}
                >
                  <span className="flex items-center gap-1.5">
                    <IconComponent
                      className={cn(
                        "h-3.5 w-3.5",
                        selected ? "text-[#1967d2] dark:text-[#8ab4f8]" : DRIVE_TEXT_SECONDARY
                      )}
                      aria-hidden
                    />
                    <span
                      className={cn(
                        "text-xs font-medium",
                        selected ? "text-[#1967d2] dark:text-[#8ab4f8]" : DRIVE_TEXT_PRIMARY
                      )}
                    >
                      {option.label}
                    </span>
                  </span>
                </button>
              )
            })}
          </div>

          <div className="space-y-3">
            <div>
              <p className={cn("text-sm font-medium", DRIVE_TEXT_PRIMARY)}>{selectedMode.label}</p>
              <p className={cn("mt-1 text-xs leading-relaxed", DRIVE_TEXT_SECONDARY)}>
                {mode === "public"
                  ? `Toute personne disposant du lien pourra accéder à ${isFolder ? "ce dossier" : "ce fichier"} selon le rôle choisi.`
                  : mode === "internal"
                    ? `Seuls les utilisateurs inscrits et connectés pourront ouvrir ce lien vers ${isFolder ? "ce dossier" : "ce fichier"}.`
                    : "Si le destinataire possède un compte, le fichier apparaît dans ses « Partagés avec moi ». Sinon, il reçoit un e-mail avec un lien public."}
              </p>
            </div>

            {mode === "contact" ? (
              <div className="space-y-3">
                <div className="space-y-1.5">
                  <Label htmlFor="drive-share-contact-email" className={DRIVE_LABEL_CLASS}>
                    Adresse e-mail
                  </Label>
                  <Input
                    id="drive-share-contact-email"
                    type="email"
                    value={contactEmail}
                    onChange={(e) => {
                      setContactEmail(e.target.value)
                      setContactQuery(e.target.value)
                    }}
                    placeholder="nom@exemple.com"
                    autoComplete="off"
                    className={DRIVE_FIELD_CLASS}
                  />
                  {contactQuery.length >= 2 && contactResults.length > 0 ? (
                    <div className="max-h-32 overflow-y-auto rounded-lg border border-[#dadce0] bg-[#f8f9fa] dark:border-[#5f6368]/40 dark:bg-[#35363a]">
                      {contactResults.slice(0, 6).map((c) =>
                        c.email ? (
                          <button
                            key={c.uid}
                            type="button"
                            className="flex w-full flex-col items-start gap-0.5 px-3 py-2 text-left hover:bg-[#f1f3f4] dark:hover:bg-[#3c4043]/50"
                            onClick={() => {
                              setContactEmail(c.email!)
                              setContactQuery("")
                            }}
                          >
                            <span className={cn("text-sm font-medium", DRIVE_TEXT_PRIMARY)}>{c.full_name}</span>
                            <span className={cn("text-xs", DRIVE_TEXT_SECONDARY)}>{c.email}</span>
                          </button>
                        ) : null
                      )}
                    </div>
                  ) : null}
                  {recipientRegistered === true ? (
                    <p className="flex items-center gap-1.5 text-xs text-[#188038] dark:text-[#81c995]">
                      <UserRound className="h-3.5 w-3.5" aria-hidden />
                      Compte inscrit — partage direct dans « Partagés avec moi »
                    </p>
                  ) : null}
                  {recipientRegistered === false ? (
                    <p className={cn("flex items-center gap-1.5 text-xs", DRIVE_TEXT_SECONDARY)}>
                      <Mail className="h-3.5 w-3.5" aria-hidden />
                      Pas de compte — invitation par e-mail avec lien public
                    </p>
                  ) : null}
                </div>
                <div className="space-y-1.5">
                  <Label htmlFor="drive-share-contact-note" className={DRIVE_LABEL_CLASS}>
                    Message (optionnel)
                  </Label>
                  <Textarea
                    id="drive-share-contact-note"
                    value={contactNote}
                    onChange={(e) => setContactNote(e.target.value)}
                    placeholder="Ajouter un message pour le destinataire…"
                    rows={2}
                    className={DRIVE_TEXTAREA_CLASS}
                  />
                </div>
              </div>
            ) : null}

            <SharePermissionsPanel
              isFolder={isFolder}
              permissionMode={permissionMode}
              folderPermissions={folderPermissions}
              onPermissionModeChange={onPermissionModeChange}
              onFolderPermissionChange={setFolderPermission}
            />
          </div>

          <ActiveSharesPanel
            shares={existingShares}
            loading={sharesLoading}
            error={sharesError}
            onRetry={() => void refetchShares()}
            deletingShareId={deletingShareId}
            onDeleteShare={(shareId) => void onDeleteShare(shareId)}
          />
        </div>

        <DialogFooter className={DRIVE_DIALOG_FOOTER}>
          <Button
            type="button"
            variant="ghost"
            className={DRIVE_BTN_GHOST}
            onClick={close}
          >
            Annuler
          </Button>
          <Button
            type="button"
            className={DRIVE_BTN_PRIMARY}
            disabled={createShare.isPending || !canCreateShare}
            onClick={() => void onShare()}
          >
            {createShare.isPending ? (
              <>
                <Loader2 className="h-4 w-4 animate-spin" />
                {mode === "contact" ? "Envoi…" : "Création…"}
              </>
            ) : mode === "contact" ? (
              <>
                <Mail className="h-4 w-4" />
                {actionLabel}
              </>
            ) : (
              <>
                <Link2 className="h-4 w-4" />
                {actionLabel}
              </>
            )}
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  )
}