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frontend/components/PostActions.tsx

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+"use client";
+
+import { useState, useEffect } from "react";
+import { useRouter } from "next/navigation";
+import Link from "next/link";
+import { Pencil, Trash2, Pin, Star } from "lucide-react";
+import { apiMe, apiDeletePost, apiTogglePin, apiToggleRecommend, type User } from "@/lib/api";
+
+interface PostActionsProps {
+  postId: string;
+  authorId: number;
+  pinned: number;
+  recommended: boolean;
+}
+
+export default function PostActions({ postId, authorId, pinned, recommended }: PostActionsProps) {
+  const router = useRouter();
+  const [user, setUser] = useState<User | null>(null);
+  const [deleting, setDeleting] = useState(false);
+  const [isPinned, setIsPinned] = useState(pinned > 0);
+  const [isRecommended, setIsRecommended] = useState(recommended);
+  const [acting, setActing] = useState("");
+
+  useEffect(() => {
+    apiMe()
+      .then((res) => setUser(res.user || null))
+      .catch(() => setUser(null));
+  }, []);
+
+  // 仅作者本人或管理员可编辑/删除；置顶/推荐仅管理员
+  const canManage = user && (user.id === authorId || user.role === "admin");
+  const isAdmin = user?.role === "admin";
+  if (!canManage) return null;
+
+  const handleDelete = async () => {
+    if (!confirm("确定要删除这篇帖子吗？此操作不可恢复。")) return;
+    setDeleting(true);
+    try {
+      const res = await apiDeletePost(postId);
+      if (res.message) {
+        router.push("/");
+      } else {
+        alert(res.error || "删除失败");
+      }
+    } finally {
+      setDeleting(false);
+    }
+  };
+
+  const handlePin = async () => {
+    setActing("pin");
+    try {
+      const res = await apiTogglePin(postId);
+      setIsPinned(res.pinned > 0);
+      router.refresh();
+    } finally {
+      setActing("");
+    }
+  };
+
+  const handleRecommend = async () => {
+    setActing("recommend");
+    try {
+      const res = await apiToggleRecommend(postId);
+      setIsRecommended(res.recommended);
+      router.refresh();
+    } finally {
+      setActing("");
+    }
+  };
+
+  return (
+    <div className="flex items-center gap-2 flex-wrap justify-end">
+      {isAdmin && (
+        <>
+          <button
+            onClick={handlePin}
+            disabled={acting !== ""}
+            className="flex items-center gap-1 text-sm px-3 py-1.5 rounded-lg hover:opacity-80 disabled:opacity-50"
+            style={{
+              background: isPinned ? "var(--primary)" : "var(--bg-secondary)",
+              color: isPinned ? "white" : "var(--text)",
+            }}
+          >
+            <Pin size={14} /> {isPinned ? "取消置顶" : "置顶"}
+          </button>
+          <button
+            onClick={handleRecommend}
+            disabled={acting !== ""}
+            className="flex items-center gap-1 text-sm px-3 py-1.5 rounded-lg hover:opacity-80 disabled:opacity-50"
+            style={{
+              background: isRecommended ? "#e11d48" : "var(--bg-secondary)",
+              color: isRecommended ? "white" : "var(--text)",
+            }}
+          >
+            <Star size={14} /> {isRecommended ? "取消推荐" : "推荐"}
+          </button>
+        </>
+      )}
+      <Link
+        href={`/post/${postId}/edit`}
+        className="flex items-center gap-1 text-sm px-3 py-1.5 rounded-lg hover:opacity-80"
+        style={{ background: "var(--bg-secondary)", color: "var(--text)" }}
+      >
+        <Pencil size={14} /> 编辑
+      </Link>
+      <button
+        onClick={handleDelete}
+        disabled={deleting}
+        className="flex items-center gap-1 text-sm px-3 py-1.5 rounded-lg text-red-600 hover:bg-red-50 disabled:opacity-50"
+        style={{ background: "var(--bg-secondary)" }}
+      >
+        <Trash2 size={14} /> {deleting ? "删除中..." : "删除"}
+      </button>
+    </div>
+  );
+}