/**
 * @file Artifacts.tsx
 * @description `/artifacts` — the Artifacts hub (`/api/artifacts`,
 * server/lib/artifacts.js): claude.ai pages sessions published, pinned
 * workspace files (or one uploaded from the computer), skills (picked,
 * uploaded as a file/folder/zip, or written — `ArtifactAddPanels.tsx`) and
 * plugins (read from a marketplace link, or typed). **My library** lists the caller's
 * own; in server mode the **Hub** tab lists what every user shared, and a
 * shared skill or plugin is installed into the viewer's own account from
 * there (after a confirmation that lists what will be written or run). An
 * admin's switch in Settings → AI tools (`ArtifactsHubSettings`) turns Hub
 * installs off for everyone. Previews of a file are
 * the server's sandboxed `raw` route in a sandboxed iframe, so nothing a
 * shared HTML file carries runs on the dashboard's origin. Right-clicking a
 * card offers the same actions as its buttons, plus copying a page's link.
 * Preview is offered only for what a browser shows inside that sandbox (text,
 * images, HTML, audio/video); an Office file, a zip or a PDF is downloaded —
 * the sandbox blocks both a download and the PDF viewer, so it would be blank.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

import { useCallback, useEffect, useRef, useState } from "react";
import { useTranslation } from "react-i18next";
import {
  Download,
  ExternalLink,
  Eye,
  FileText,
  Globe,
  Package,
  Pencil,
  Plus,
  Share2,
  Sparkles,
  Trash2,
  X,
} from "lucide-react";
import {
  api,
  type Artifact,
  type ArtifactCandidate,
  type ArtifactKind,
  type ArtifactSettings,
} from "../lib/api";
import type { Lane } from "../lib/types";
import { eventBus } from "../lib/eventBus";
import { toast } from "../lib/toast";
import { confirmDialog } from "../lib/confirm";
import { useDialog } from "../hooks/useDialog";
import { copyText } from "../lib/clipboard";
import { ContextMenu, MenuItem, MenuSeparator, useContextMenu } from "../components/ContextMenu";
import {
  FileUploadPanel,
  PluginAddPanel,
  SkillAddPanel,
} from "../components/artifacts/ArtifactAddPanels";

const KIND_ICON = { page: Globe, file: FileText, skill: Sparkles, plugin: Package } as const;
const KINDS: ArtifactKind[] = ["page", "file", "skill", "plugin"];

function fmtBytes(n: number | null): string {
  if (!n) return "";
  if (n < 1024) return `${n} B`;
  if (n < 1024 * 1024) return `${Math.round(n / 1024)} KB`;
  return `${(n / 1024 / 1024).toFixed(1)} MB`;
}

const IMAGE = /\.(png|jpe?g|gif|webp|svg)$/i;
// What the sandboxed preview can show: the server's typed list minus PDF.
const PREVIEWABLE =
  /\.(html?|md|markdown|txt|log|csv|tsv|json|ya?ml|sh|py|js|ts|png|jpe?g|gif|webp|svg|mp4|webm|mp3|wav)$/i;

export function Artifacts() {
  const { t } = useTranslation("artifacts");
  const [settings, setSettings] = useState<ArtifactSettings | null>(null);
  const [tab, setTab] = useState<"mine" | "hub">("mine");
  const [kind, setKind] = useState<ArtifactKind | "">("");
  const [q, setQ] = useState("");
  const [items, setItems] = useState<Artifact[] | null>(null);
  const [adding, setAdding] = useState<ArtifactKind | null>(null);
  const [addMenu, setAddMenu] = useState(false);
  const addMenuRef = useRef<HTMLDivElement>(null);
  const [preview, setPreview] = useState<{ item: Artifact; path: string } | null>(null);

  useEffect(() => {
    api.artifacts
      .settings()
      .then(setSettings)
      .catch(() => setSettings(null));
  }, []);

  const load = useCallback(() => {
    api.artifacts
      .list({ scope: tab, kind: kind || undefined, q: q.trim() || undefined })
      .then((r) => setItems(r.items))
      .catch((err) => {
        setItems([]);
        toast.error(err);
      });
  }, [tab, kind, q]);

  useEffect(() => {
    const id = window.setTimeout(load, q ? 250 : 0);
    return () => window.clearTimeout(id);
  }, [load, q]);

  useEffect(
    () =>
      eventBus.subscribe((msg) => {
        if (msg.type === "artifact_changed") load();
      }),
    [load]
  );

  // The Add menu closes on Escape or a click anywhere outside it.
  useEffect(() => {
    if (!addMenu) return;
    const onDown = (e: MouseEvent) => {
      if (!addMenuRef.current?.contains(e.target as Node)) setAddMenu(false);
    };
    const onKey = (e: KeyboardEvent) => {
      if (e.key === "Escape") setAddMenu(false);
    };
    document.addEventListener("mousedown", onDown);
    document.addEventListener("keydown", onKey);
    return () => {
      document.removeEventListener("mousedown", onDown);
      document.removeEventListener("keydown", onKey);
    };
  }, [addMenu]);

  const server = !!settings?.serverMode;

  const share = async (a: Artifact) => {
    try {
      await api.artifacts.update(a.id, { shared: !a.shared });
      toast.success(t(a.shared ? "unshareDone" : "shareDone"));
      load();
    } catch (err) {
      toast.error(err);
    }
  };

  const [renaming, setRenaming] = useState<Artifact | null>(null);

  const remove = async (a: Artifact) => {
    if (
      !(await confirmDialog({
        title: t("deleteTitle", { title: a.title }),
        message: t("deleteBody"),
        confirmLabel: t("deleteConfirm"),
      }))
    )
      return;
    try {
      await api.artifacts.remove(a.id);
      load();
    } catch (err) {
      toast.error(err);
    }
  };

  const install = async (a: Artifact) => {
    const message =
      a.kind === "skill"
        ? `${t("installSkillBody", { name: a.source })} ${a.files.map((f) => f.path).join(", ")}`
        : t("installPluginBody", { market: a.market, name: a.source });
    if (
      !(await confirmDialog({
        title: t("installTitle", { title: a.title }),
        message,
        confirmLabel: t("installConfirm"),
        destructive: false,
      }))
    )
      return;
    const done = (r: { installed: string }) =>
      toast.success(
        a.kind === "skill"
          ? t("installed", { path: r.installed })
          : t("installedPlugin", { name: r.installed })
      );
    try {
      done(await api.artifacts.install(a.id));
    } catch (err) {
      const code = (err as { code?: string }).code;
      if (code !== "EEXISTS") return toast.error(err);
      if (
        !(await confirmDialog({
          title: t("replaceTitle", { name: a.source }),
          message: t("replaceBody"),
          confirmLabel: t("replaceConfirm"),
        }))
      )
        return;
      try {
        done(await api.artifacts.install(a.id, true));
      } catch (e) {
        toast.error(e);
      }
    }
    load();
  };

  return (
    <div className="space-y-4" data-testid="artifacts-page">
      <header className="flex flex-wrap items-start justify-between gap-3">
        <div>
          <h1 className="text-lg font-semibold text-fg-primary">{t("title")}</h1>
          <p className="text-sm text-fg-muted">{t(server ? "subtitleServer" : "subtitle")}</p>
        </div>
        <div className="flex items-center gap-3">
          <div className="relative" ref={addMenuRef}>
            <button
              type="button"
              className="btn-primary flex items-center gap-1.5 text-sm"
              data-testid="artifacts-add"
              aria-haspopup="menu"
              aria-expanded={addMenu}
              onClick={() => setAddMenu((v) => !v)}
            >
              <Plus className="h-4 w-4" />
              {t("add")}
            </button>
            {addMenu && (
              <div className="absolute right-0 z-20 mt-1 w-56 rounded-lg border border-border bg-surface-1 p-1 shadow-xl">
                {KINDS.map((k) => {
                  const Icon = KIND_ICON[k];
                  return (
                    <button
                      key={k}
                      type="button"
                      onClick={() => {
                        setAdding(k);
                        setAddMenu(false);
                      }}
                      className="flex w-full items-center gap-2 rounded px-2 py-1.5 text-left text-sm text-fg-secondary hover:bg-surface-3 hover:text-fg-primary"
                    >
                      <Icon className="h-4 w-4" />
                      {t(`add.${k}`)}
                    </button>
                  );
                })}
              </div>
            )}
          </div>
        </div>
      </header>

      <div className="flex flex-wrap items-center gap-2">
        {server && (
          <div className="flex items-center rounded border border-border bg-surface-2 p-0.5">
            {(["mine", "hub"] as const).map((v) => (
              <button
                key={v}
                type="button"
                aria-pressed={tab === v}
                onClick={() => setTab(v)}
                className={`rounded px-3 py-1 text-xs font-medium ${
                  tab === v
                    ? "bg-accent-solid text-white"
                    : "text-fg-secondary hover:bg-surface-3 hover:text-fg-primary"
                }`}
              >
                {t(`tab.${v}`)}
              </button>
            ))}
          </div>
        )}
        <div className="flex items-center rounded border border-border bg-surface-2 p-0.5">
          {(["", ...KINDS] as const).map((k) => (
            <button
              key={k || "all"}
              type="button"
              aria-pressed={kind === k}
              onClick={() => setKind(k)}
              className={`rounded px-2.5 py-1 text-xs ${
                kind === k
                  ? "bg-surface-4 text-fg-primary"
                  : "text-fg-secondary hover:bg-surface-3 hover:text-fg-primary"
              }`}
            >
              {t(k ? `kind.${k}` : "kind.all")}
            </button>
          ))}
        </div>
        <input
          value={q}
          onChange={(e) => setQ(e.target.value)}
          placeholder={t("search")}
          aria-label={t("search")}
          className="ml-auto w-56 rounded border border-border bg-surface-1 px-2 py-1 text-sm text-fg-primary"
        />
      </div>

      {items === null ? (
        <p className="text-sm text-fg-muted">{t("loading")}</p>
      ) : items.length === 0 ? (
        <p className="rounded-lg border border-dashed border-border px-4 py-10 text-center text-sm text-fg-muted">
          {t(tab === "hub" ? "empty.hub" : "empty.mine")}
        </p>
      ) : (
        <ul className="grid gap-3 sm:grid-cols-2 xl:grid-cols-3" data-testid="artifacts-list">
          {items.map((a) => (
            <ArtifactCard
              key={a.id}
              item={a}
              server={server}
              canInstall={!!settings?.installsEnabled}
              onShare={() => void share(a)}
              onRename={() => setRenaming(a)}
              onDelete={() => void remove(a)}
              onInstall={() => void install(a)}
              onPreview={(path) => setPreview({ item: a, path })}
            />
          ))}
        </ul>
      )}

      {adding && <AddDialog kind={adding} onClose={() => setAdding(null)} onAdded={load} />}
      {preview && <PreviewDialog {...preview} onClose={() => setPreview(null)} />}
      {renaming && (
        <RenameDialog
          item={renaming}
          onClose={() => setRenaming(null)}
          onSaved={() => {
            setRenaming(null);
            load();
          }}
        />
      )}
    </div>
  );
}

function ArtifactCard({
  item: a,
  server,
  canInstall,
  onShare,
  onRename,
  onDelete,
  onInstall,
  onPreview,
}: {
  item: Artifact;
  server: boolean;
  canInstall: boolean;
  onShare: () => void;
  onRename: () => void;
  onDelete: () => void;
  onInstall: () => void;
  onPreview: (path: string) => void;
}) {
  const { t } = useTranslation("artifacts");
  const Icon = KIND_ICON[a.kind];
  const menu = useContextMenu<null>();
  const pick = (fn: () => void) => () => {
    menu.close();
    fn();
  };
  const previewPath = a.kind === "skill" ? "SKILL.md" : (a.files[0]?.path ?? "");
  const canPreview =
    a.files.length > 0 &&
    (a.kind === "skill" || (a.kind === "file" && PREVIEWABLE.test(previewPath)));
  const btn =
    "flex items-center gap-1 rounded px-1.5 py-0.5 text-[11px] text-fg-secondary hover:bg-surface-3 hover:text-fg-primary";
  return (
    <li
      className="flex flex-col gap-2 rounded-lg border border-border bg-surface-1 p-3"
      data-testid={`artifact-${a.id}`}
      onContextMenu={(e) => menu.open(e, null)}
    >
      <div className="flex items-start gap-2">
        <Icon className="mt-0.5 h-4 w-4 shrink-0 text-fg-muted" />
        <div className="min-w-0 flex-1">
          <p className="truncate text-sm font-medium text-fg-primary" title={a.title}>
            {a.title}
          </p>
          <p className="truncate text-[11px] text-fg-muted" title={a.source || a.url || ""}>
            {t(`kindOne.${a.kind}`)}
            {a.source ? ` · ${a.source}` : ""}
            {a.size ? ` · ${fmtBytes(a.size)}` : ""}
          </p>
        </div>
        {a.shared && (
          <span className="shrink-0 rounded bg-surface-3 px-1.5 py-0.5 text-[10px] text-fg-secondary">
            {t("shared")}
          </span>
        )}
      </div>
      {a.description && <p className="line-clamp-2 text-xs text-fg-secondary">{a.description}</p>}
      <p className="text-[11px] text-fg-muted">
        {server && a.owner && !a.mine ? `${t("by", { name: a.owner })} · ` : ""}
        {new Date(a.createdAt).toLocaleString()}
        {a.installs > 0 ? ` · ${t("installs", { count: a.installs })}` : ""}
      </p>
      <div className="mt-auto flex flex-wrap items-center gap-1 border-t border-border-light pt-2">
        {a.kind === "page" && a.url && (
          <a href={a.url} target="_blank" rel="noopener noreferrer" className={btn}>
            <ExternalLink className="h-3 w-3" />
            {t("open")}
          </a>
        )}
        {canPreview && (
          <button type="button" className={btn} onClick={() => onPreview(previewPath)}>
            <Eye className="h-3 w-3" />
            {t("preview")}
          </button>
        )}
        {a.kind === "file" && a.files.length > 0 && (
          <a href={api.artifacts.rawUrl(a.id, a.files[0]?.path, true)} className={btn}>
            <Download className="h-3 w-3" />
            {t("download")}
          </a>
        )}
        {(a.kind === "skill" || a.kind === "plugin") && (
          <button
            type="button"
            className={btn}
            disabled={!canInstall}
            title={canInstall ? undefined : t("installsOff")}
            onClick={onInstall}
          >
            <Download className="h-3 w-3" />
            {t("install")}
          </button>
        )}
        <span className="ml-auto flex items-center gap-1">
          {server && a.canChange && (
            <button type="button" className={btn} onClick={onShare}>
              <Share2 className="h-3 w-3" />
              {t(a.shared ? "unshare" : "share")}
            </button>
          )}
          {a.canChange && (
            <>
              <button type="button" className={btn} aria-label={t("rename")} onClick={onRename}>
                <Pencil className="h-3 w-3" />
              </button>
              <button type="button" className={btn} aria-label={t("delete")} onClick={onDelete}>
                <Trash2 className="h-3 w-3" />
              </button>
            </>
          )}
        </span>
      </div>
      {menu.menu && (
        <ContextMenu x={menu.menu.x} y={menu.menu.y} onClose={menu.close} testId="artifact-menu">
          {a.kind === "page" && a.url && (
            <>
              <MenuItem onSelect={pick(() => window.open(a.url!, "_blank", "noopener,noreferrer"))}>
                {t("open")}
              </MenuItem>
              <MenuItem onSelect={pick(() => void copyText(a.url!))}>{t("copyLink")}</MenuItem>
            </>
          )}
          {canPreview && (
            <MenuItem onSelect={pick(() => onPreview(previewPath))}>{t("preview")}</MenuItem>
          )}
          {a.kind === "file" && a.files.length > 0 && (
            <MenuItem
              onSelect={pick(() => {
                window.location.href = api.artifacts.rawUrl(a.id, a.files[0]?.path, true);
              })}
            >
              {t("download")}
            </MenuItem>
          )}
          {(a.kind === "skill" || a.kind === "plugin") && (
            <MenuItem disabled={!canInstall} onSelect={pick(onInstall)}>
              {t("install")}
            </MenuItem>
          )}
          {a.canChange && (
            <>
              <MenuSeparator />
              {server && (
                <MenuItem onSelect={pick(onShare)}>{t(a.shared ? "unshare" : "share")}</MenuItem>
              )}
              <MenuItem onSelect={pick(onRename)}>{t("rename")}</MenuItem>
              <MenuItem danger onSelect={pick(onDelete)}>
                {t("delete")}
              </MenuItem>
            </>
          )}
        </ContextMenu>
      )}
    </li>
  );
}

function Modal({
  title,
  onClose,
  children,
  wide = false,
}: {
  title: string;
  onClose: () => void;
  children: React.ReactNode;
  wide?: boolean;
}) {
  const { t } = useTranslation("artifacts");
  const panel = useRef<HTMLDivElement>(null);
  useDialog(true, panel, onClose);
  return (
    <div
      className="fixed inset-0 z-40 flex items-center justify-center bg-black/60 p-4"
      role="presentation"
      onClick={onClose}
    >
      <div
        ref={panel}
        role="dialog"
        aria-modal="true"
        aria-label={title}
        onClick={(e) => e.stopPropagation()}
        className={`flex max-h-[85vh] w-full ${wide ? "max-w-5xl" : "max-w-lg"} flex-col rounded-xl border border-border bg-surface-1 p-5 shadow-xl`}
      >
        <div className="mb-3 flex shrink-0 items-center justify-between gap-2">
          <h2 className="truncate text-sm font-semibold text-fg-primary">{title}</h2>
          <button
            type="button"
            aria-label={t("close")}
            onClick={onClose}
            className="text-fg-muted hover:text-fg-primary"
          >
            <X className="h-4 w-4" />
          </button>
        </div>
        <div className="min-h-0 flex-1 overflow-auto">{children}</div>
      </div>
    </div>
  );
}

function RenameDialog({
  item,
  onClose,
  onSaved,
}: {
  item: Artifact;
  onClose: () => void;
  onSaved: () => void;
}) {
  const { t } = useTranslation("artifacts");
  const [title, setTitle] = useState(item.title);
  const [description, setDescription] = useState(item.description);
  const [source, setSource] = useState(item.source ?? "");
  const [market, setMarket] = useState(item.market ?? "");
  const plugin = item.kind === "plugin";
  const field =
    "w-full rounded border border-border bg-surface-1 px-2 py-1 text-sm text-fg-primary";
  return (
    <Modal title={t("rename")} onClose={onClose}>
      <form
        className="space-y-2"
        onSubmit={async (e) => {
          e.preventDefault();
          try {
            await api.artifacts.update(item.id, {
              title,
              description,
              ...(plugin && source.trim() !== item.source ? { source: source.trim() } : {}),
              ...(plugin && market.trim() !== item.market ? { market: market.trim() } : {}),
            });
            onSaved();
          } catch (err) {
            toast.error(err);
          }
        }}
      >
        <input
          className={field}
          aria-label={t("form.title")}
          value={title}
          autoFocus
          onChange={(e) => setTitle(e.target.value)}
        />
        <textarea
          className={field}
          rows={3}
          aria-label={t("form.description")}
          value={description}
          onChange={(e) => setDescription(e.target.value)}
        />
        {plugin && (
          <>
            <input
              className={field}
              aria-label={t("form.pluginKey")}
              placeholder="my-plugin@my-marketplace"
              value={source}
              onChange={(e) => setSource(e.target.value)}
            />
            <input
              className={field}
              aria-label={t("form.market")}
              placeholder="owner/repo · https://…"
              value={market}
              onChange={(e) => setMarket(e.target.value)}
            />
          </>
        )}
        <div className="flex justify-end">
          <button
            type="submit"
            className="btn-primary text-sm"
            disabled={!title.trim() || (plugin && (!source.trim() || !market.trim()))}
          >
            {t("form.saveEdit")}
          </button>
        </div>
      </form>
    </Modal>
  );
}

function PreviewDialog({
  item,
  path,
  onClose,
}: {
  item: Artifact;
  path: string;
  onClose: () => void;
}) {
  const { t } = useTranslation("artifacts");
  const [current, setCurrent] = useState(path);
  const url = api.artifacts.rawUrl(item.id, current);
  return (
    <Modal title={item.title} onClose={onClose} wide>
      <div className="flex h-[70vh] gap-3">
        {item.files.length > 1 && (
          <ul className="w-56 shrink-0 space-y-0.5 overflow-auto">
            {item.files.map((f) => (
              <li key={f.path}>
                <button
                  type="button"
                  onClick={() => setCurrent(f.path)}
                  className={`w-full truncate rounded px-1.5 py-0.5 text-left font-mono text-[11px] ${
                    f.path === current
                      ? "bg-surface-3 text-fg-primary"
                      : "text-fg-secondary hover:bg-surface-2"
                  }`}
                  title={f.path}
                >
                  {f.path}
                </button>
              </li>
            ))}
          </ul>
        )}
        <div className="min-w-0 flex-1 rounded border border-border bg-white">
          {!PREVIEWABLE.test(current) ? (
            <div className="flex h-full flex-col items-center justify-center gap-3 bg-surface-1 p-6 text-center">
              <p className="text-sm text-fg-secondary">{t("noPreview")}</p>
              <a
                href={api.artifacts.rawUrl(item.id, current, true)}
                className="btn-primary flex items-center gap-1.5 text-sm"
              >
                <Download className="h-4 w-4" />
                {t("download")}
              </a>
            </div>
          ) : IMAGE.test(current) && !/\.svg$/i.test(current) ? (
            <img src={url} alt={current} className="h-full w-full object-contain" />
          ) : (
            // No allow-* tokens: a shared page renders, nothing in it runs.
            <iframe
              title={current}
              src={url}
              sandbox=""
              className="h-full w-full"
              data-testid="artifact-preview"
            />
          )}
        </div>
      </div>
    </Modal>
  );
}

function AddDialog({
  kind,
  onClose,
  onAdded,
}: {
  kind: ArtifactKind;
  onClose: () => void;
  onAdded: () => void;
}) {
  const { t } = useTranslation("artifacts");
  const [busy, setBusy] = useState(false);
  const [title, setTitle] = useState("");
  const [description, setDescription] = useState("");
  const [url, setUrl] = useState("");
  const [lanes, setLanes] = useState<Lane[]>([]);
  const [laneId, setLaneId] = useState<number | null>(null);
  const [candidates, setCandidates] = useState<ArtifactCandidate[] | null>(null);

  useEffect(() => {
    if (kind !== "file" && kind !== "skill") return;
    api.lanes
      .list()
      .then((r) => setLanes(r.lanes))
      .catch(() => setLanes([]));
  }, [kind]);

  useEffect(() => {
    if (kind === "file") {
      setCandidates(null);
      if (laneId)
        api.artifacts
          .candidates(laneId)
          .then((r) => setCandidates(r.items))
          .catch((err) => {
            setCandidates([]);
            toast.error(err);
          });
    }
  }, [kind, laneId]);

  const run = async (fn: () => Promise<unknown>, close = true) => {
    setBusy(true);
    try {
      await fn();
      toast.success(t("added"));
      onAdded();
      if (close) onClose();
    } catch (err) {
      toast.error(err);
    } finally {
      setBusy(false);
    }
  };

  const field =
    "w-full rounded border border-border bg-surface-1 px-2 py-1 text-sm text-fg-primary";
  const meta = (
    <>
      <input
        className={field}
        placeholder={t("form.title")}
        aria-label={t("form.title")}
        value={title}
        onChange={(e) => setTitle(e.target.value)}
      />
      <textarea
        className={field}
        rows={2}
        placeholder={t("form.description")}
        aria-label={t("form.description")}
        value={description}
        onChange={(e) => setDescription(e.target.value)}
      />
    </>
  );
  const workspacePicker = (
    <select
      className={field}
      aria-label={t("form.workspace")}
      value={laneId ?? ""}
      onChange={(e) => setLaneId(e.target.value ? Number(e.target.value) : null)}
    >
      <option value="">{t("form.pickWorkspace")}</option>
      {lanes.map((l) => (
        <option key={l.id} value={l.id}>
          {l.title || l.cwd}
        </option>
      ))}
    </select>
  );

  return (
    <Modal title={t(`add.${kind}`)} onClose={onClose}>
      <div className="space-y-2" data-testid={`artifacts-add-${kind}`}>
        {kind === "page" && (
          <form
            className="space-y-2"
            onSubmit={(e) => {
              e.preventDefault();
              void run(() => api.artifacts.addPage({ url, title, description }));
            }}
          >
            <input
              className={field}
              placeholder="https://claude.ai/…"
              aria-label={t("form.url")}
              value={url}
              autoFocus
              onChange={(e) => setUrl(e.target.value)}
            />
            {meta}
            <div className="flex justify-end">
              <button type="submit" className="btn-primary text-sm" disabled={busy || !url.trim()}>
                {t("form.save")}
              </button>
            </div>
          </form>
        )}

        {kind === "file" && (
          <>
            <FileUploadPanel onAdded={onAdded} />
            <p className="border-t border-border-light pt-2 text-[11px] font-medium text-fg-secondary">
              {t("file.fromWorkspace")}
            </p>
            {workspacePicker}
            {laneId && candidates === null && (
              <p className="text-xs text-fg-muted">{t("loading")}</p>
            )}
            {candidates && candidates.length === 0 && (
              <p className="text-xs text-fg-muted">{t("form.noCandidates")}</p>
            )}
            {candidates && candidates.length > 0 && (
              <ul className="max-h-80 space-y-0.5 overflow-auto">
                {candidates.map((c) => (
                  <li key={c.path} className="flex items-center gap-2 text-xs">
                    <span
                      className="min-w-0 flex-1 truncate font-mono text-fg-secondary"
                      title={c.path}
                    >
                      {c.path}
                    </span>
                    {!c.exists ? (
                      <span className="text-fg-muted">{t("form.missing")}</span>
                    ) : c.pinned ? (
                      <span className="text-fg-muted">{t("form.pinned")}</span>
                    ) : (
                      <button
                        type="button"
                        className="btn-ghost text-xs"
                        disabled={busy}
                        onClick={() =>
                          void run(async () => {
                            await api.artifacts.pinFile({
                              laneId: laneId!,
                              path: c.path,
                              sessionId: c.sessionId,
                            });
                            setCandidates((list) =>
                              (list ?? []).map((x) =>
                                x.path === c.path ? { ...x, pinned: true } : x
                              )
                            );
                          }, false)
                        }
                      >
                        {t("form.pin")}
                      </button>
                    )}
                  </li>
                ))}
              </ul>
            )}
          </>
        )}

        {kind === "skill" && <SkillAddPanel lanes={lanes} onAdded={onAdded} onClose={onClose} />}

        {kind === "plugin" && <PluginAddPanel onAdded={onAdded} onClose={onClose} />}
      </div>
    </Modal>
  );
}