feat: add multi-video tutorial support with dropdown menu and video management

Co-authored-by: Cursor <cursoragent@cursor.com>

app/(admin)/layout.tsx

@@ -1,16 +1,17 @@
 import { auth } from "@/app/(auth)/auth";
 import { TopNavbar } from "@/components/top-navbar";
-import { getSiteSettings, getNavLinks } from "@/lib/db/queries";
+import { getSiteSettings, getNavLinks, getTutorialVideos } from "@/lib/db/queries";
 
 export default async function AdminLayout({
   children,
 }: {
   children: React.ReactNode;
 }) {
-  const [session, siteSettings, navLinks] = await Promise.all([
+  const [session, siteSettings, navLinks, tutorialVideos] = await Promise.all([
     auth(),
     getSiteSettings(),
     getNavLinks(),
+    getTutorialVideos(),
   ]);
 
   return (
@@ -31,7 +32,14 @@ export default async function AdminLayout({
         toolbox1Enabled={siteSettings.toolbox1Enabled ?? true}
         toolbox2Name={siteSettings.toolbox2Name || "工具箱2"}
         toolbox2Enabled={siteSettings.toolbox2Enabled ?? false}
-        tutorialVideoUrl={siteSettings.tutorialVideoUrl}
+        tutorialVideos={tutorialVideos.map(v => ({
+          id: v.id,
+          title: v.title,
+          videoUrl: v.videoUrl,
+          coverUrl: v.coverUrl,
+          description: v.description,
+          order: v.order,
+        }))}
         tutorialEnabled={siteSettings.tutorialEnabled ?? false}
         rankingEnabled={siteSettings.rankingEnabled ?? true}
       />

app/(admin)/settings/admin-settings-client.tsx

@@ -51,6 +51,10 @@ import {
   Scissors,
   Expand,
   Move3D,
+  Upload,
+  Video,
+  Loader2,
+  Check,
 } from "lucide-react";
 import {
   Dialog,
@@ -173,6 +177,16 @@ type NavLink = {
   toolboxGroup: number; // 1 或 2
 };
 
+type TutorialVideo = {
+  id: string;
+  title: string;
+  videoUrl: string;
+  coverUrl: string | null;
+  description: string | null;
+  order: number;
+  isEnabled: boolean;
+};
+
 type DingTalkOrganization = {
   id: string;
   name: string;
@@ -317,6 +331,7 @@ export function AdminSettingsClient() {
   const { data: storageData, mutate: mutateStorage } = useSWR<{ configs: StorageConfig[] }>("/api/admin/storage", fetcher);
   const { data: siteSettingsData, mutate: mutateSiteSettings } = useSWR<SiteSettings>("/api/site-settings", fetcher);
   const { data: navLinksData, mutate: mutateNavLinks } = useSWR<{ links: NavLink[] }>("/api/nav-links", fetcher);
+  const { data: tutorialVideosData, mutate: mutateTutorialVideos } = useSWR<{ videos: TutorialVideo[] }>("/api/tutorial-videos", fetcher);
   const { data: authSettingsData, mutate: mutateAuthSettings } = useSWR<any>(
     "/api/auth-settings",
     fetcher,
@@ -562,6 +577,23 @@ export function AdminSettingsClient() {
   const [showNavLinkDialog, setShowNavLinkDialog] = useState(false);
   const [editingNavLink, setEditingNavLink] = useState<string | null>(null);
 
+  // 视频上传状态
+  const [videoUploading, setVideoUploading] = useState(false);
+  const [videoUploadProgress, setVideoUploadProgress] = useState("");
+  const [videoQuality, setVideoQuality] = useState<"low" | "medium" | "high">("medium");
+
+  // 视频教程管理状态
+  const [showTutorialVideoDialog, setShowTutorialVideoDialog] = useState(false);
+  const [editingTutorialVideo, setEditingTutorialVideo] = useState<string | null>(null);
+  const [tutorialVideoForm, setTutorialVideoForm] = useState({
+    title: "",
+    videoUrl: "",
+    coverUrl: "",
+    description: "",
+    order: 0,
+    isEnabled: true,
+  });
+
   // 快捷短语状态
   const [questions, setQuestions] = useState<string[]>([]);
   const { data: questionsData, mutate: mutateQuestions } = useSWR<string[]>("/api/starter-questions", fetcher);
@@ -1069,6 +1101,54 @@ export function AdminSettingsClient() {
     }
   };
 
+  // --- 视频教程管理逻辑 ---
+  const resetTutorialVideoForm = () => {
+    setTutorialVideoForm({
+      title: "",
+      videoUrl: "",
+      coverUrl: "",
+      description: "",
+      order: 0,
+      isEnabled: true,
+    });
+    setEditingTutorialVideo(null);
+  };
+
+  const handleSaveTutorialVideo = async () => {
+    try {
+      const method = editingTutorialVideo ? "PUT" : "POST";
+      const body = editingTutorialVideo
+        ? { ...tutorialVideoForm, id: editingTutorialVideo }
+        : tutorialVideoForm;
+
+      const response = await fetch("/api/tutorial-videos", {
+        method,
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify(body),
+      });
+
+      if (!response.ok) throw new Error("保存失败");
+      toast.success(editingTutorialVideo ? "视频更新成功" : "视频创建成功");
+      mutateTutorialVideos();
+      setShowTutorialVideoDialog(false);
+      resetTutorialVideoForm();
+    } catch (error) {
+      toast.error("保存视频失败");
+    }
+  };
+
+  const handleDeleteTutorialVideo = async (id: string) => {
+    if (!confirm("确定要删除此视频吗？")) return;
+    try {
+      const response = await fetch(`/api/tutorial-videos?id=${id}`, { method: "DELETE" });
+      if (!response.ok) throw new Error("删除失败");
+      toast.success("视频删除成功");
+      mutateTutorialVideos();
+    } catch (error) {
+      toast.error("删除视频失败");
+    }
+  };
+
   // --- 认证设置逻辑 ---
   const handleSaveAuthSettings = async () => {
     try {
@@ -2561,32 +2641,17 @@ export function AdminSettingsClient() {
               </div>
 
               {/* 功能教程设置 */}
-              <div className="rounded-lg border p-4 space-y-4">
-                <div className="flex items-center justify-between">
-                  <div className="flex-1 space-y-1">
-                    <Label className="text-base">功能教程</Label>
-                    <div className="text-sm text-muted-foreground">
-                      启用后在导航栏显示功能教程按钮，点击后弹窗播放视频
-                    </div>
+              <div className="flex items-center justify-between rounded-lg border p-4">
+                <div className="flex-1 space-y-1">
+                  <Label className="text-base">功能教程</Label>
+                  <div className="text-sm text-muted-foreground">
+                    启用后在导航栏显示功能教程按钮，点击后下拉显示视频列表
                   </div>
-                  <Switch
-                    checked={siteSettings.tutorialEnabled}
-                    onCheckedChange={(checked) => setSiteSettings({ ...siteSettings, tutorialEnabled: checked })}
-                  />
                 </div>
-                {siteSettings.tutorialEnabled && (
-                  <div className="space-y-2">
-                    <Label>视频链接</Label>
-                    <Input
-                      value={siteSettings.tutorialVideoUrl || ""}
-                      onChange={(e) => setSiteSettings({ ...siteSettings, tutorialVideoUrl: e.target.value || null })}
-                      placeholder="输入视频播放链接，支持 MP4、YouTube、Bilibili 等"
-                    />
-                    <div className="text-xs text-muted-foreground">
-                      支持直接视频链接（如 .mp4）或嵌入式播放链接
-                    </div>
-                  </div>
-                )}
+                <Switch
+                  checked={siteSettings.tutorialEnabled}
+                  onCheckedChange={(checked) => setSiteSettings({ ...siteSettings, tutorialEnabled: checked })}
+                />
               </div>
 
               <Button onClick={handleSaveSiteSettings}>
@@ -2595,6 +2660,295 @@ export function AdminSettingsClient() {
             </CardContent>
           </Card>
 
+          {/* 视频教程管理 */}
+          {siteSettings.tutorialEnabled && (
+            <Card>
+              <CardHeader>
+                <div className="flex items-center justify-between">
+                  <div>
+                    <CardTitle className="flex items-center gap-2">
+                      <Video className="h-5 w-5" />
+                      视频教程管理
+                    </CardTitle>
+                    <CardDescription>添加和管理功能教程视频，用户可以在导航栏查看</CardDescription>
+                  </div>
+                  <Dialog open={showTutorialVideoDialog} onOpenChange={setShowTutorialVideoDialog}>
+                    <DialogTrigger asChild>
+                      <Button onClick={() => { resetTutorialVideoForm(); setShowTutorialVideoDialog(true); }}>
+                        <Plus className="mr-2 h-4 w-4" /> 添加视频
+                      </Button>
+                    </DialogTrigger>
+                    <DialogContent className="max-w-2xl">
+                      <DialogHeader>
+                        <DialogTitle>{editingTutorialVideo ? "编辑视频" : "添加视频"}</DialogTitle>
+                      </DialogHeader>
+                      <div className="space-y-4">
+                        <div className="space-y-2">
+                          <Label>视频标题 *</Label>
+                          <Input
+                            value={tutorialVideoForm.title}
+                            onChange={(e) => setTutorialVideoForm({ ...tutorialVideoForm, title: e.target.value })}
+                            placeholder="例如：快速入门教程"
+                          />
+                        </div>
+
+                        {/* 视频上传或链接 */}
+                        <div className="space-y-3">
+                          <Label>视频文件</Label>
+                          <div className="flex items-center gap-3">
+                            <Select
+                              value={videoQuality}
+                              onValueChange={(v) => setVideoQuality(v as "low" | "medium" | "high")}
+                            >
+                              <SelectTrigger className="w-[140px]">
+                                <SelectValue placeholder="压缩质量" />
+                              </SelectTrigger>
+                              <SelectContent>
+                                <SelectItem value="low">低质量 (小)</SelectItem>
+                                <SelectItem value="medium">中等 (推荐)</SelectItem>
+                                <SelectItem value="high">高质量 (大)</SelectItem>
+                              </SelectContent>
+                            </Select>
+                            <label className="flex-1">
+                              <input
+                                type="file"
+                                accept="video/*"
+                                className="hidden"
+                                onChange={async (e) => {
+                                  const file = e.target.files?.[0];
+                                  if (!file) return;
+                                  
+                                  setVideoUploading(true);
+                                  setVideoUploadProgress("上传中...");
+                                  
+                                  try {
+                                    const formData = new FormData();
+                                    formData.append("file", file);
+                                    formData.append("quality", videoQuality);
+                                    formData.append("compress", "true");
+                                    
+                                    const response = await fetch("/api/video/upload", {
+                                      method: "POST",
+                                      body: formData,
+                                    });
+                                    
+                                    const result = await response.json();
+                                    
+                                    if (!response.ok) {
+                                      throw new Error(result.error || "上传失败");
+                                    }
+                                    
+                                    setTutorialVideoForm({ ...tutorialVideoForm, videoUrl: result.url });
+                                    
+                                    if (result.compression?.compressed) {
+                                      toast.success(`压缩率: ${result.compression.ratio}%`);
+                                    } else {
+                                      toast.success("上传成功！");
+                                    }
+                                  } catch (error) {
+                                    toast.error(error instanceof Error ? error.message : "上传失败");
+                                  } finally {
+                                    setVideoUploading(false);
+                                    setVideoUploadProgress("");
+                                    e.target.value = "";
+                                  }
+                                }}
+                                disabled={videoUploading}
+                              />
+                              <Button
+                                type="button"
+                                variant="outline"
+                                className="w-full cursor-pointer"
+                                disabled={videoUploading}
+                                asChild
+                              >
+                                <span>
+                                  {videoUploading ? (
+                                    <>
+                                      <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+                                      {videoUploadProgress}
+                                    </>
+                                  ) : (
+                                    <>
+                                      <Upload className="mr-2 h-4 w-4" />
+                                      上传视频
+                                    </>
+                                  )}
+                                </span>
+                              </Button>
+                            </label>
+                          </div>
+                        </div>
+
+                        <div className="space-y-2">
+                          <Label>视频链接 *</Label>
+                          <Input
+                            value={tutorialVideoForm.videoUrl}
+                            onChange={(e) => setTutorialVideoForm({ ...tutorialVideoForm, videoUrl: e.target.value })}
+                            placeholder="视频URL（上传后自动填充或手动输入）"
+                          />
+                        </div>
+
+                        {/* 封面上传或链接 */}
+                        <div className="space-y-2">
+                          <Label>封面图片</Label>
+                          <div className="flex items-center gap-2">
+                            <Input
+                              value={tutorialVideoForm.coverUrl}
+                              onChange={(e) => setTutorialVideoForm({ ...tutorialVideoForm, coverUrl: e.target.value })}
+                              placeholder="封面图片URL（可选）"
+                              className="flex-1"
+                            />
+                            <label>
+                              <input
+                                type="file"
+                                accept="image/*"
+                                className="hidden"
+                                onChange={async (e) => {
+                                  const file = e.target.files?.[0];
+                                  if (!file) return;
+                                  
+                                  try {
+                                    const formData = new FormData();
+                                    formData.append("file", file);
+                                    
+                                    const response = await fetch("/api/files/upload", {
+                                      method: "POST",
+                                      body: formData,
+                                    });
+                                    
+                                    const result = await response.json();
+                                    if (result.url) {
+                                      setTutorialVideoForm({ ...tutorialVideoForm, coverUrl: result.url });
+                                      toast.success("封面上传成功");
+                                    }
+                                  } catch (error) {
+                                    toast.error("封面上传失败");
+                                  }
+                                  e.target.value = "";
+                                }}
+                              />
+                              <Button type="button" variant="outline" size="sm" asChild>
+                                <span>
+                                  <Upload className="h-4 w-4" />
+                                </span>
+                              </Button>
+                            </label>
+                          </div>
+                        </div>
+
+                        <div className="space-y-2">
+                          <Label>视频描述</Label>
+                          <Input
+                            value={tutorialVideoForm.description}
+                            onChange={(e) => setTutorialVideoForm({ ...tutorialVideoForm, description: e.target.value })}
+                            placeholder="简短描述（可选）"
+                          />
+                        </div>
+
+                        <div className="grid grid-cols-2 gap-4">
+                          <div className="space-y-2">
+                            <Label>排序</Label>
+                            <Input
+                              type="number"
+                              value={tutorialVideoForm.order}
+                              onChange={(e) => setTutorialVideoForm({ ...tutorialVideoForm, order: parseInt(e.target.value) || 0 })}
+                            />
+                          </div>
+                          <div className="flex items-center gap-2 pt-6">
+                            <Switch
+                              checked={tutorialVideoForm.isEnabled}
+                              onCheckedChange={(checked) => setTutorialVideoForm({ ...tutorialVideoForm, isEnabled: checked })}
+                            />
+                            <Label>启用</Label>
+                          </div>
+                        </div>
+
+                        {/* 预览 */}
+                        {tutorialVideoForm.videoUrl && (
+                          <div className="space-y-2">
+                            <Label>预览</Label>
+                            <div className="relative aspect-video bg-black rounded-lg overflow-hidden max-h-[200px]">
+                              <video
+                                src={tutorialVideoForm.videoUrl}
+                                className="w-full h-full object-contain"
+                                controls
+                              />
+                            </div>
+                          </div>
+                        )}
+                      </div>
+                      <DialogFooter>
+                        <Button variant="outline" onClick={() => setShowTutorialVideoDialog(false)}>取消</Button>
+                        <Button onClick={handleSaveTutorialVideo} disabled={!tutorialVideoForm.title || !tutorialVideoForm.videoUrl}>
+                          保存
+                        </Button>
+                      </DialogFooter>
+                    </DialogContent>
+                  </Dialog>
+                </div>
+              </CardHeader>
+              <CardContent>
+                <div className="space-y-3">
+                  {tutorialVideosData?.videos?.map((video) => (
+                    <div key={video.id} className="flex items-center gap-4 p-3 border rounded-lg">
+                      {/* 封面 */}
+                      <div className="w-24 h-16 bg-muted rounded overflow-hidden flex-shrink-0">
+                        {video.coverUrl ? (
+                          <img src={video.coverUrl} alt={video.title} className="w-full h-full object-cover" />
+                        ) : (
+                          <div className="w-full h-full flex items-center justify-center">
+                            <Video className="h-6 w-6 text-muted-foreground" />
+                          </div>
+                        )}
+                      </div>
+                      {/* 信息 */}
+                      <div className="flex-1 min-w-0">
+                        <div className="font-medium flex items-center gap-2">
+                          {video.title}
+                          {!video.isEnabled && <span className="text-xs bg-gray-200 px-2 py-0.5 rounded">已禁用</span>}
+                        </div>
+                        {video.description && (
+                          <div className="text-sm text-muted-foreground truncate">{video.description}</div>
+                        )}
+                        <div className="text-xs text-muted-foreground">排序: {video.order}</div>
+                      </div>
+                      {/* 操作 */}
+                      <div className="flex items-center gap-2">
+                        <Button
+                          variant="outline"
+                          size="sm"
+                          onClick={() => {
+                            setTutorialVideoForm({
+                              title: video.title,
+                              videoUrl: video.videoUrl,
+                              coverUrl: video.coverUrl || "",
+                              description: video.description || "",
+                              order: video.order,
+                              isEnabled: video.isEnabled,
+                            });
+                            setEditingTutorialVideo(video.id);
+                            setShowTutorialVideoDialog(true);
+                          }}
+                        >
+                          <Edit className="h-4 w-4" />
+                        </Button>
+                        <Button variant="destructive" size="sm" onClick={() => handleDeleteTutorialVideo(video.id)}>
+                          <Trash2 className="h-4 w-4" />
+                        </Button>
+                      </div>
+                    </div>
+                  ))}
+                  {(!tutorialVideosData?.videos?.length) && (
+                    <div className="text-center text-muted-foreground py-8">
+                      暂无视频教程，点击上方按钮添加
+                    </div>
+                  )}
+                </div>
+              </CardContent>
+            </Card>
+          )}
+
           {/* 导航链接列表 */}
           <Card>
             <CardHeader>

app/(chat)/layout.tsx

@@ -6,7 +6,7 @@ import { DataStreamProvider } from "@/components/data-stream-provider";
 import { SidebarInset, SidebarProvider } from "@/components/ui/sidebar";
 import { auth } from "../(auth)/auth";
 import { TopNavbar } from "@/components/top-navbar";
-import { getSiteSettings, getNavLinks } from "@/lib/db/queries";
+import { getSiteSettings, getNavLinks, getTutorialVideos } from "@/lib/db/queries";
 
 export default function Layout({ children }: { children: React.ReactNode }) {
   return (
@@ -25,11 +25,12 @@ export default function Layout({ children }: { children: React.ReactNode }) {
 }
 
 async function SidebarWrapper({ children }: { children: React.ReactNode }) {
-  const [session, cookieStore, siteSettings, navLinks] = await Promise.all([
+  const [session, cookieStore, siteSettings, navLinks, tutorialVideos] = await Promise.all([
     auth(),
     cookies(),
     getSiteSettings(),
     getNavLinks(),
+    getTutorialVideos(),
   ]);
   const isCollapsed = cookieStore.get("sidebar_state")?.value !== "true";
 
@@ -51,7 +52,14 @@ async function SidebarWrapper({ children }: { children: React.ReactNode }) {
         toolbox1Enabled={siteSettings.toolbox1Enabled ?? true}
         toolbox2Name={siteSettings.toolbox2Name || "工具箱2"}
         toolbox2Enabled={siteSettings.toolbox2Enabled ?? false}
-        tutorialVideoUrl={siteSettings.tutorialVideoUrl}
+        tutorialVideos={tutorialVideos.map(v => ({
+          id: v.id,
+          title: v.title,
+          videoUrl: v.videoUrl,
+          coverUrl: v.coverUrl,
+          description: v.description,
+          order: v.order,
+        }))}
         tutorialEnabled={siteSettings.tutorialEnabled ?? false}
         rankingEnabled={siteSettings.rankingEnabled ?? true}
       />

app/api/tutorial-videos/route.ts

@@ -0,0 +1,167 @@
+import { NextRequest, NextResponse } from "next/server";
+import { z } from "zod";
+import { db } from "@/lib/db";
+import { tutorialVideos } from "@/lib/db/schema";
+import { eq, asc } from "drizzle-orm";
+import { auth } from "@/app/(auth)/auth";
+
+// GET /api/tutorial-videos - 获取所有视频教程 (公开)
+export async function GET() {
+  try {
+    const videos = await db
+      .select()
+      .from(tutorialVideos)
+      .where(eq(tutorialVideos.isEnabled, true))
+      .orderBy(asc(tutorialVideos.order));
+    
+    return NextResponse.json({ videos });
+  } catch (error) {
+    console.error("[Tutorial Videos API] Get error:", error);
+    return NextResponse.json(
+      { error: "Failed to fetch tutorial videos" },
+      { status: 500 }
+    );
+  }
+}
+
+const createSchema = z.object({
+  title: z.string().min(1).max(128),
+  videoUrl: z.string().url(),
+  coverUrl: z.string().url().nullable().optional(),
+  description: z.string().nullable().optional(),
+  order: z.number().int().default(0),
+  isEnabled: z.boolean().default(true),
+});
+
+// POST /api/tutorial-videos - 创建视频教程（仅管理员）
+export async function POST(request: NextRequest) {
+  try {
+    const session = await auth();
+    
+    if (!session?.user) {
+      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+    }
+    
+    if (session.user.type !== "admin") {
+      return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+    }
+    
+    const body = await request.json();
+    const data = createSchema.parse(body);
+    
+    const [created] = await db
+      .insert(tutorialVideos)
+      .values({
+        ...data,
+        coverUrl: data.coverUrl || null,
+        description: data.description || null,
+        createdBy: session.user.id,
+      })
+      .returning();
+    
+    return NextResponse.json(created);
+  } catch (error) {
+    console.error("[Tutorial Videos API] Create error:", error);
+    
+    if (error instanceof z.ZodError) {
+      return NextResponse.json(
+        { error: "Invalid request data", details: error.errors },
+        { status: 400 }
+      );
+    }
+    
+    return NextResponse.json(
+      { error: "Failed to create tutorial video" },
+      { status: 500 }
+    );
+  }
+}
+
+const updateSchema = z.object({
+  id: z.string().uuid(),
+  title: z.string().min(1).max(128).optional(),
+  videoUrl: z.string().url().optional(),
+  coverUrl: z.string().url().nullable().optional(),
+  description: z.string().nullable().optional(),
+  order: z.number().int().optional(),
+  isEnabled: z.boolean().optional(),
+});
+
+// PUT /api/tutorial-videos - 更新视频教程（仅管理员）
+export async function PUT(request: NextRequest) {
+  try {
+    const session = await auth();
+    
+    if (!session?.user) {
+      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+    }
+    
+    if (session.user.type !== "admin") {
+      return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+    }
+    
+    const body = await request.json();
+    const { id, ...data } = updateSchema.parse(body);
+    
+    const [updated] = await db
+      .update(tutorialVideos)
+      .set({
+        ...data,
+        updatedAt: new Date(),
+      })
+      .where(eq(tutorialVideos.id, id))
+      .returning();
+    
+    if (!updated) {
+      return NextResponse.json({ error: "Tutorial video not found" }, { status: 404 });
+    }
+    
+    return NextResponse.json(updated);
+  } catch (error) {
+    console.error("[Tutorial Videos API] Update error:", error);
+    
+    if (error instanceof z.ZodError) {
+      return NextResponse.json(
+        { error: "Invalid request data", details: error.errors },
+        { status: 400 }
+      );
+    }
+    
+    return NextResponse.json(
+      { error: "Failed to update tutorial video" },
+      { status: 500 }
+    );
+  }
+}
+
+// DELETE /api/tutorial-videos - 删除视频教程（仅管理员）
+export async function DELETE(request: NextRequest) {
+  try {
+    const session = await auth();
+    
+    if (!session?.user) {
+      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+    }
+    
+    if (session.user.type !== "admin") {
+      return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+    }
+    
+    const { searchParams } = new URL(request.url);
+    const id = searchParams.get("id");
+    
+    if (!id) {
+      return NextResponse.json({ error: "ID is required" }, { status: 400 });
+    }
+    
+    await db.delete(tutorialVideos).where(eq(tutorialVideos.id, id));
+    
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error("[Tutorial Videos API] Delete error:", error);
+    return NextResponse.json(
+      { error: "Failed to delete tutorial video" },
+      { status: 500 }
+    );
+  }
+}

app/api/video/upload/route.ts

@@ -0,0 +1,264 @@
+import { NextRequest, NextResponse } from "next/server";
+import { auth } from "@/app/(auth)/auth";
+import { uploadFile } from "@/lib/storage/service";
+import { exec } from "child_process";
+import { promisify } from "util";
+import { writeFile, unlink, readFile, mkdir } from "fs/promises";
+import { existsSync } from "fs";
+import path from "path";
+import os from "os";
+
+const execAsync = promisify(exec);
+
+// 最大文件大小：500MB
+const MAX_FILE_SIZE = 500 * 1024 * 1024;
+
+// 支持的视频格式
+const SUPPORTED_FORMATS = [
+  "video/mp4",
+  "video/quicktime",
+  "video/x-msvideo",
+  "video/x-matroska",
+  "video/webm",
+  "video/mpeg",
+  "video/x-m4v",
+];
+
+// 检查 FFmpeg 是否可用
+async function checkFFmpeg(): Promise<boolean> {
+  try {
+    await execAsync("ffmpeg -version");
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+// 获取视频信息
+async function getVideoInfo(
+  inputPath: string
+): Promise<{ duration: number; width: number; height: number; bitrate: number }> {
+  try {
+    const { stdout } = await execAsync(
+      `ffprobe -v quiet -print_format json -show_format -show_streams "${inputPath}"`
+    );
+    const info = JSON.parse(stdout);
+    const videoStream = info.streams?.find((s: any) => s.codec_type === "video");
+    
+    return {
+      duration: parseFloat(info.format?.duration || "0"),
+      width: videoStream?.width || 0,
+      height: videoStream?.height || 0,
+      bitrate: parseInt(info.format?.bit_rate || "0"),
+    };
+  } catch (error) {
+    console.error("[Video Upload] Failed to get video info:", error);
+    return { duration: 0, width: 0, height: 0, bitrate: 0 };
+  }
+}
+
+// 使用 FFmpeg 压缩视频
+async function compressVideo(
+  inputPath: string,
+  outputPath: string,
+  options: {
+    targetWidth?: number;
+    crf?: number; // 质量因子，18-28 推荐，越低质量越高
+    preset?: string; // 编码速度预设
+    audioBitrate?: string;
+  } = {}
+): Promise<{ success: boolean; originalSize: number; compressedSize: number }> {
+  const {
+    targetWidth = 1280, // 默认 720p
+    crf = 23, // 默认质量
+    preset = "medium", // 编码速度
+    audioBitrate = "128k",
+  } = options;
+
+  const videoInfo = await getVideoInfo(inputPath);
+  const originalSize = (await readFile(inputPath)).length;
+
+  // 构建 FFmpeg 命令
+  // 使用 H.264 (libx264) 编码器 + AAC 音频
+  // -movflags +faststart 让视频可以边下载边播放
+  let scaleFilter = "";
+  if (videoInfo.width > targetWidth) {
+    scaleFilter = `-vf "scale=${targetWidth}:-2"`;
+  }
+
+  const ffmpegCmd = `ffmpeg -i "${inputPath}" \
+    -c:v libx264 \
+    -preset ${preset} \
+    -crf ${crf} \
+    ${scaleFilter} \
+    -c:a aac \
+    -b:a ${audioBitrate} \
+    -movflags +faststart \
+    -y \
+    "${outputPath}"`;
+
+  console.log("[Video Compress] Running FFmpeg:", ffmpegCmd);
+
+  try {
+    await execAsync(ffmpegCmd, { maxBuffer: 50 * 1024 * 1024 });
+    const compressedSize = (await readFile(outputPath)).length;
+    
+    console.log(
+      `[Video Compress] Original: ${(originalSize / 1024 / 1024).toFixed(2)}MB, ` +
+      `Compressed: ${(compressedSize / 1024 / 1024).toFixed(2)}MB, ` +
+      `Ratio: ${((1 - compressedSize / originalSize) * 100).toFixed(1)}%`
+    );
+
+    return { success: true, originalSize, compressedSize };
+  } catch (error) {
+    console.error("[Video Compress] FFmpeg error:", error);
+    return { success: false, originalSize, compressedSize: 0 };
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    // 验证用户身份
+    const session = await auth();
+    if (!session?.user) {
+      return NextResponse.json({ error: "未授权" }, { status: 401 });
+    }
+
+    // 只允许管理员上传教程视频
+    if (session.user.type !== "admin") {
+      return NextResponse.json({ error: "仅管理员可上传视频" }, { status: 403 });
+    }
+
+    // 检查 FFmpeg
+    const hasFFmpeg = await checkFFmpeg();
+    console.log("[Video Upload] FFmpeg available:", hasFFmpeg);
+
+    // 解析上传的文件
+    const formData = await request.formData();
+    const file = formData.get("file") as File | null;
+    const compress = formData.get("compress") !== "false"; // 默认压缩
+    const quality = formData.get("quality") as string || "medium"; // low, medium, high
+
+    if (!file) {
+      return NextResponse.json({ error: "未找到视频文件" }, { status: 400 });
+    }
+
+    // 验证文件类型
+    if (!SUPPORTED_FORMATS.includes(file.type)) {
+      return NextResponse.json(
+        { error: `不支持的视频格式: ${file.type}` },
+        { status: 400 }
+      );
+    }
+
+    // 验证文件大小
+    if (file.size > MAX_FILE_SIZE) {
+      return NextResponse.json(
+        { error: `文件过大，最大支持 ${MAX_FILE_SIZE / 1024 / 1024}MB` },
+        { status: 400 }
+      );
+    }
+
+    console.log(
+      `[Video Upload] Received file: ${file.name}, size: ${(file.size / 1024 / 1024).toFixed(2)}MB, type: ${file.type}`
+    );
+
+    // 创建临时目录
+    const tempDir = path.join(os.tmpdir(), "video-upload");
+    if (!existsSync(tempDir)) {
+      await mkdir(tempDir, { recursive: true });
+    }
+
+    const timestamp = Date.now();
+    const randomStr = Math.random().toString(36).slice(2, 8);
+    const inputPath = path.join(tempDir, `input-${timestamp}-${randomStr}.mp4`);
+    const outputPath = path.join(tempDir, `output-${timestamp}-${randomStr}.mp4`);
+
+    // 写入临时文件
+    const bytes = await file.arrayBuffer();
+    await writeFile(inputPath, Buffer.from(bytes));
+
+    let finalBuffer: Buffer;
+    let compressionInfo = {
+      compressed: false,
+      originalSize: file.size,
+      compressedSize: file.size,
+      ratio: 0,
+    };
+
+    // 如果有 FFmpeg 且需要压缩
+    if (hasFFmpeg && compress) {
+      // 根据质量选择 CRF 值
+      const crfMap: Record<string, number> = {
+        low: 28, // 较低质量，文件更小
+        medium: 23, // 中等质量（推荐）
+        high: 18, // 高质量，文件较大
+      };
+      const crf = crfMap[quality] || 23;
+
+      const result = await compressVideo(inputPath, outputPath, {
+        crf,
+        preset: quality === "low" ? "fast" : quality === "high" ? "slow" : "medium",
+        targetWidth: quality === "low" ? 720 : quality === "high" ? 1920 : 1280,
+      });
+
+      if (result.success) {
+        finalBuffer = await readFile(outputPath);
+        compressionInfo = {
+          compressed: true,
+          originalSize: result.originalSize,
+          compressedSize: result.compressedSize,
+          ratio: Math.round((1 - result.compressedSize / result.originalSize) * 100),
+        };
+      } else {
+        // 压缩失败，使用原文件
+        finalBuffer = Buffer.from(bytes);
+      }
+    } else {
+      // 不压缩，直接使用原文件
+      finalBuffer = Buffer.from(bytes);
+    }
+
+    // 上传到存储
+    const filename = `tutorial-${timestamp}-${randomStr}.mp4`;
+    // 将 Buffer 转换为 ArrayBuffer
+    const uint8Array = new Uint8Array(finalBuffer);
+    const arrayBuffer = uint8Array.buffer.slice(
+      uint8Array.byteOffset,
+      uint8Array.byteOffset + uint8Array.byteLength
+    ) as ArrayBuffer;
+    const uploadResult = await uploadFile(filename, arrayBuffer);
+
+    console.log(`[Video Upload] Uploaded to: ${uploadResult.url}`);
+
+    // 清理临时文件
+    try {
+      await unlink(inputPath);
+      if (existsSync(outputPath)) {
+        await unlink(outputPath);
+      }
+    } catch {
+      // 忽略清理错误
+    }
+
+    return NextResponse.json({
+      success: true,
+      url: uploadResult.url,
+      filename: filename,
+      compression: compressionInfo,
+    });
+  } catch (error) {
+    console.error("[Video Upload] Error:", error);
+    return NextResponse.json(
+      { error: error instanceof Error ? error.message : "上传失败" },
+      { status: 500 }
+    );
+  }
+}
+
+// 配置较大的请求体限制
+export const config = {
+  api: {
+    bodyParser: false,
+  },
+};

app/canvas/[id]/layout.tsx

@@ -3,7 +3,7 @@ import { Suspense } from "react";
 import { cookies } from "next/headers";
 import { auth } from "@/app/(auth)/auth";
 import { TopNavbar } from "@/components/top-navbar";
-import { getSiteSettings, getNavLinks } from "@/lib/db/queries";
+import { getSiteSettings, getNavLinks, getTutorialVideos } from "@/lib/db/queries";
 
 export const metadata: Metadata = {
   title: "无限画布",
@@ -23,10 +23,11 @@ export default function CanvasEditorLayout({
 }
 
 async function CanvasLayoutWrapper({ children }: { children: React.ReactNode }) {
-  const [session, siteSettings, navLinks] = await Promise.all([
+  const [session, siteSettings, navLinks, tutorialVideos] = await Promise.all([
     auth(),
     getSiteSettings(),
     getNavLinks(),
+    getTutorialVideos(),
   ]);
 
   return (
@@ -47,7 +48,14 @@ async function CanvasLayoutWrapper({ children }: { children: React.ReactNode })
         toolbox1Enabled={siteSettings.toolbox1Enabled ?? true}
         toolbox2Name={siteSettings.toolbox2Name || "工具箱2"}
         toolbox2Enabled={siteSettings.toolbox2Enabled ?? false}
-        tutorialVideoUrl={siteSettings.tutorialVideoUrl}
+        tutorialVideos={tutorialVideos.map(v => ({
+          id: v.id,
+          title: v.title,
+          videoUrl: v.videoUrl,
+          coverUrl: v.coverUrl,
+          description: v.description,
+          order: v.order,
+        }))}
         tutorialEnabled={siteSettings.tutorialEnabled ?? false}
         rankingEnabled={siteSettings.rankingEnabled ?? true}
       />

components/top-navbar.tsx

@@ -30,6 +30,15 @@ type CustomLink = {
   toolboxGroup?: number; // 1 或 2
 };
 
+type TutorialVideo = {
+  id: string;
+  title: string;
+  videoUrl: string;
+  coverUrl: string | null;
+  description: string | null;
+  order: number;
+};
+
 type TopNavbarProps = {
   siteName?: string;
   siteLogo?: string;
@@ -40,7 +49,7 @@ type TopNavbarProps = {
   toolbox1Enabled?: boolean;
   toolbox2Name?: string;
   toolbox2Enabled?: boolean;
-  tutorialVideoUrl?: string | null;
+  tutorialVideos?: TutorialVideo[];
   tutorialEnabled?: boolean;
   rankingEnabled?: boolean;
 };
@@ -55,7 +64,7 @@ export function TopNavbar({
   toolbox1Enabled = true,
   toolbox2Name = "工具箱2",
   toolbox2Enabled = false,
-  tutorialVideoUrl,
+  tutorialVideos = [],
   tutorialEnabled = false,
   rankingEnabled = true,
 }: TopNavbarProps) {
@@ -64,7 +73,9 @@ export function TopNavbar({
   const [mounted, setMounted] = useState(false);
   const [ranking, setRanking] = useState<RankingItem[]>([]);
   const [rankingOpen, setRankingOpen] = useState(false);
+  const [tutorialMenuOpen, setTutorialMenuOpen] = useState(false);
   const [showTutorialModal, setShowTutorialModal] = useState(false);
+  const [currentTutorialVideo, setCurrentTutorialVideo] = useState<TutorialVideo | null>(null);
   const [showImageEditor, setShowImageEditor] = useState(false);
   const [editorImageUrl, setEditorImageUrl] = useState<string>("");
   // 移除 fileInputRef，不再需要外部上传
@@ -250,18 +261,64 @@ export function TopNavbar({
         </a>
 
         {/* 功能教程 */}
-        {tutorialEnabled && tutorialVideoUrl && (
-          <Button
-            variant="ghost"
-            size="sm"
-            className="flex items-center gap-1 h-8 px-3 text-white hover:bg-white/15 hover:text-white rounded-full transition-colors"
-            onClick={() => setShowTutorialModal(true)}
-            type="button"
-            title="功能教程"
-          >
-            <PlayCircle className="h-4 w-4 text-green-400" />
-            <span className="text-sm font-medium">功能教程</span>
-          </Button>
+        {tutorialEnabled && tutorialVideos.length > 0 && (
+          <DropdownMenu open={tutorialMenuOpen} onOpenChange={setTutorialMenuOpen}>
+            <DropdownMenuTrigger asChild>
+              <Button
+                variant="ghost"
+                size="sm"
+                className="flex items-center gap-1 h-8 px-3 text-white hover:bg-white/15 hover:text-white rounded-full transition-colors"
+                type="button"
+              >
+                <PlayCircle className="h-4 w-4 text-green-400" />
+                <span className="text-sm font-medium">功能教程</span>
+              </Button>
+            </DropdownMenuTrigger>
+            <DropdownMenuContent align="end" className="w-[320px] p-2">
+              <div className="text-sm font-medium text-muted-foreground mb-2 px-2">
+                选择教程视频
+              </div>
+              <div className="space-y-1 max-h-[400px] overflow-y-auto">
+                {tutorialVideos
+                  .sort((a, b) => a.order - b.order)
+                  .map((video) => (
+                    <DropdownMenuItem
+                      key={video.id}
+                      className="cursor-pointer p-0"
+                      onClick={() => {
+                        setCurrentTutorialVideo(video);
+                        setShowTutorialModal(true);
+                        setTutorialMenuOpen(false);
+                      }}
+                    >
+                      <div className="flex items-center gap-3 p-2 w-full hover:bg-accent rounded-md">
+                        {/* 封面 */}
+                        <div className="w-16 h-10 bg-muted rounded overflow-hidden flex-shrink-0">
+                          {video.coverUrl ? (
+                            <img 
+                              src={video.coverUrl} 
+                              alt={video.title} 
+                              className="w-full h-full object-cover"
+                            />
+                          ) : (
+                            <div className="w-full h-full flex items-center justify-center bg-gradient-to-br from-green-500/20 to-blue-500/20">
+                              <PlayCircle className="h-5 w-5 text-green-500" />
+                            </div>
+                          )}
+                        </div>
+                        {/* 标题和描述 */}
+                        <div className="flex-1 min-w-0">
+                          <div className="font-medium text-sm truncate">{video.title}</div>
+                          {video.description && (
+                            <div className="text-xs text-muted-foreground truncate">{video.description}</div>
+                          )}
+                        </div>
+                      </div>
+                    </DropdownMenuItem>
+                  ))}
+              </div>
+            </DropdownMenuContent>
+          </DropdownMenu>
         )}
 
         {/* 精选榜单 */}
@@ -393,51 +450,65 @@ export function TopNavbar({
       )}
 
       {/* 功能教程弹窗 */}
-      {showTutorialModal && tutorialVideoUrl && (
+      {showTutorialModal && currentTutorialVideo && (
         <div 
           className="fixed inset-0 z-[100] flex items-center justify-center bg-black/80"
-          onClick={() => setShowTutorialModal(false)}
+          onClick={() => {
+            setShowTutorialModal(false);
+            setCurrentTutorialVideo(null);
+          }}
         >
           <div 
             className="relative w-full max-w-4xl mx-4"
             onClick={(e) => e.stopPropagation()}
           >
-            {/* 关闭按钮 */}
-            <button
-              onClick={() => setShowTutorialModal(false)}
-              className="absolute -top-12 right-0 text-white hover:text-gray-300 transition-colors"
-              title="关闭"
-            >
-              <X className="h-8 w-8" />
-            </button>
+            {/* 标题和关闭按钮 */}
+            <div className="flex items-center justify-between mb-4">
+              <h3 className="text-white text-lg font-medium">{currentTutorialVideo.title}</h3>
+              <button
+                onClick={() => {
+                  setShowTutorialModal(false);
+                  setCurrentTutorialVideo(null);
+                }}
+                className="text-white hover:text-gray-300 transition-colors"
+                title="关闭"
+              >
+                <X className="h-8 w-8" />
+              </button>
+            </div>
             
             {/* 视频播放器 */}
             <div className="relative w-full aspect-video bg-black rounded-lg overflow-hidden shadow-2xl">
-              {tutorialVideoUrl.includes('youtube.com') || tutorialVideoUrl.includes('youtu.be') ? (
+              {currentTutorialVideo.videoUrl.includes('youtube.com') || currentTutorialVideo.videoUrl.includes('youtu.be') ? (
                 // YouTube 嵌入
                 <iframe
-                  src={tutorialVideoUrl.replace('watch?v=', 'embed/').replace('youtu.be/', 'youtube.com/embed/')}
+                  src={currentTutorialVideo.videoUrl.replace('watch?v=', 'embed/').replace('youtu.be/', 'youtube.com/embed/')}
                   className="w-full h-full"
                   allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
                   allowFullScreen
                 />
-              ) : tutorialVideoUrl.includes('bilibili.com') ? (
+              ) : currentTutorialVideo.videoUrl.includes('bilibili.com') ? (
                 // Bilibili 嵌入
                 <iframe
-                  src={tutorialVideoUrl.replace('www.bilibili.com/video/', 'player.bilibili.com/player.html?bvid=')}
+                  src={currentTutorialVideo.videoUrl.replace('www.bilibili.com/video/', 'player.bilibili.com/player.html?bvid=')}
                   className="w-full h-full"
                   allowFullScreen
                 />
               ) : (
                 // 普通视频链接
                 <video
-                  src={tutorialVideoUrl}
+                  src={currentTutorialVideo.videoUrl}
                   className="w-full h-full"
                   controls
                   autoPlay
                 />
               )}
             </div>
+
+            {/* 视频描述 */}
+            {currentTutorialVideo.description && (
+              <p className="text-gray-300 text-sm mt-3">{currentTutorialVideo.description}</p>
+            )}
           </div>
         </div>
       )}

lib/db/queries.ts

@@ -1637,3 +1637,21 @@ export async function checkUserImageQuota(userId: string): Promise<{
     return { allowed: true, used: 0, limit: null, remaining: null };
   }
 }
+
+// 获取视频教程列表
+export async function getTutorialVideos() {
+  try {
+    const { tutorialVideos } = await import("./schema");
+    const { eq, asc } = await import("drizzle-orm");
+    
+    const videos = await db
+      .select()
+      .from(tutorialVideos)
+      .where(eq(tutorialVideos.isEnabled, true))
+      .orderBy(asc(tutorialVideos.order));
+    
+    return videos;
+  } catch (_error) {
+    return [];
+  }
+}

lib/db/schema.ts

@@ -327,6 +327,22 @@ export const navLinks = pgTable("NavLinks", {
 
 export type NavLink = InferSelectModel<typeof navLinks>;
 
+// 视频教程表
+export const tutorialVideos = pgTable("TutorialVideos", {
+  id: uuid("id").primaryKey().notNull().defaultRandom(),
+  title: varchar("title", { length: 128 }).notNull(), // 视频标题
+  videoUrl: text("videoUrl").notNull(), // 视频播放链接
+  coverUrl: text("coverUrl"), // 视频封面图片链接
+  description: text("description"), // 视频描述
+  order: integer("order").notNull().default(0), // 排序
+  isEnabled: boolean("isEnabled").notNull().default(true), // 是否启用
+  createdAt: timestamp("createdAt").notNull().defaultNow(),
+  updatedAt: timestamp("updatedAt").notNull().defaultNow(),
+  createdBy: uuid("createdBy").references(() => user.id),
+});
+
+export type TutorialVideo = InferSelectModel<typeof tutorialVideos>;
+
 // 认证配置表
 export const authSettings = pgTable("AuthSettings", {
   id: uuid("id").primaryKey().notNull().defaultRandom(),