diff --git a/app/(root)/page.tsx b/app/(root)/page.tsx index 6b484a3..ff0c27b 100644 --- a/app/(root)/page.tsx +++ b/app/(root)/page.tsx @@ -1,14 +1,17 @@ import BookCard from "@/components/BookCard"; import HeroSection from "@/components/HeroSection"; -import { sampleBooks } from "@/lib/constants"; +import { getAllBooks } from "@/lib/actions/book.actions"; + +export default async function Page() { + const bookResult = await getAllBooks(); + const books = bookResult.success ? bookResult.data ?? [] : []; -export default function Page() { return ( -
+
- {sampleBooks.map((book) => ( + {books.map((book) => ( ))}
-
+ ); } diff --git a/app/api/upload/route.ts b/app/api/upload/route.ts new file mode 100644 index 0000000..bcbfb14 --- /dev/null +++ b/app/api/upload/route.ts @@ -0,0 +1,52 @@ +import { MAX_FILE_SIZE } from "@/lib/constants"; +import { auth } from "@clerk/nextjs/server"; +import { handleUpload, HandleUploadBody } from "@vercel/blob/client"; +import { NextRequest, NextResponse } from "next/server"; + +export async function POST(request: NextRequest): Promise { + const body = (await request.json()) as HandleUploadBody; + + try { + // 处理上传请求 + const jsonResponse = await handleUpload({ + token: process.env.BLOB_READ_WRITE_TOKEN, + body, + request, + // 在生成上传令牌之前执行的函数 + onBeforeGenerateToken: async () => { + // 检查用户是否登录 + const { userId } = await auth(); + if (!userId) { + throw new Error("Unauthorized: 用户未登录"); + } + + return { + allowedContentTypes: [ + "application/pdf", + "image/jpeg", + "image/png", + "image/webp", + ], + addRandomSuffix: true, + maximumSizeInBytes: MAX_FILE_SIZE, + tokenPayload: JSON.stringify({ userId }), + }; + }, + // 上传完成后的回调 + onUploadCompleted: async ({ blob, tokenPayload }) => { + console.log("文件已上传至 Blob", blob.url); + + const payload = tokenPayload ? JSON.parse(tokenPayload) : null; + const userId = payload?.userId; + + // TODO: 上报PostHog + }, + }); + + return NextResponse.json(jsonResponse); + } catch (e) { + const message = e instanceof Error ? e.message : "未知错误"; + const status = message.includes("Unauthorized") ? 401 : 500; + return NextResponse.json({ error: message }, { status }); + } +} diff --git a/app/layout.tsx b/app/layout.tsx index bc83904..b8b4682 100644 --- a/app/layout.tsx +++ b/app/layout.tsx @@ -4,7 +4,7 @@ import { ClerkProvider } from "@clerk/nextjs"; import "./globals.css"; import NavBar from "@/components/NavBar"; import { CLERK_AUTH_APPEARANCE_OVERRIDE } from "@/lib/constants"; - +import { Toaster } from "@/components/ui/sonner" const ibmPlexSerif = IBM_Plex_Serif({ variable: "--font-ibm-plex-serif", @@ -40,6 +40,7 @@ export default function RootLayout({ {children} + diff --git a/components/UploadForm.tsx b/components/UploadForm.tsx index 0554dc6..fb953f8 100644 --- a/components/UploadForm.tsx +++ b/components/UploadForm.tsx @@ -5,8 +5,13 @@ import { useForm } from "react-hook-form"; import { zodResolver } from "@hookform/resolvers/zod"; import * as z from "zod"; import { Upload, Image as ImageIcon, X } from "lucide-react"; -import { cn } from "@/lib/utils"; - +import { cn, parsePDFFile } from "@/lib/utils"; +import { + MAX_FILE_SIZE, + ACCEPTED_PDF_TYPES, + MAX_IMAGE_SIZE, + ACCEPTED_IMAGE_TYPES, +} from "@/lib/constants"; import { Form, FormControl, @@ -16,6 +21,11 @@ import { FormMessage, } from "@/components/ui/form"; import { Input } from "@/components/ui/input"; +import { useAuth } from "@clerk/nextjs"; +import { toast } from "sonner"; +import { useRouter } from "next/navigation"; +import { checkBookExists, createBook, saveBookSegments } from "@/lib/actions/book.actions"; +import { upload } from "@vercel/blob/client"; const VOICES = { male: [ @@ -42,17 +52,29 @@ const VOICES = { }; const formSchema = z.object({ - pdfFile: z.any().refine((file) => file, "请选择一本 PDF 文件"), - coverImage: z.any().optional(), - title: z.string().min(1, "标题是必填项"), - author: z.string().min(1, "作者是必填项"), + title: z.string().min(1, "标题是必填项").max(100, "标题不能超过 100 个字符"), + author: z.string().min(1, "作者是必填项").max(100, "作者名不能超过 100 个字符"), voice: z.string().min(1, "请选择一个语音"), + pdfFile: z + .instanceof(File, { message: "请选择一本 PDF 文件" }) + .refine((file) => file.size <= MAX_FILE_SIZE, "文件大小不能超过 50MB") + .refine((file) => ACCEPTED_PDF_TYPES.includes(file.type), "仅支持 PDF 格式的文件"), + coverImage: z + .instanceof(File) + .optional() + .refine((file) => !file || file.size <= MAX_IMAGE_SIZE, "图片大小不能超过 10MB") + .refine( + (file) => !file || ACCEPTED_IMAGE_TYPES.includes(file.type), + "仅支持 .jpg、.jpeg、.png 和 .webp 格式的图片", + ), }); export default function UploadForm() { const [isLoading, setIsLoading] = useState(false); const [pdfFilename, setPdfFilename] = useState(null); const [coverFilename, setCoverFilename] = useState(null); + const { userId } = useAuth(); + const router = useRouter(); const form = useForm>({ resolver: zodResolver(formSchema), @@ -60,16 +82,125 @@ export default function UploadForm() { title: "", author: "", voice: "", + pdfFile: undefined, + coverImage: undefined, }, }); - function onSubmit(values: z.infer) { + async function onSubmit(data: z.infer) { + // 检查用户是否登录 + if (!userId) { + return toast.error("上传图书前请先登录！"); + } + setIsLoading(true); - // Simulate API call - setTimeout(() => { + + // PostHog -> Track Book Uploads ... + + try { + // 检查图书是否已存在 + const existsCheck = await checkBookExists(data.title); + if (existsCheck.exists && existsCheck.book) { + toast.info("同名的图书已存在！"); + // 清空表单 + form.reset(); + // 已存在就跳转到该图书的详情页面 + router.push(`/books/${existsCheck.book.slug}`); + return; + } + + // 格式化文件名 + const fileTitle = data.title.replace(/\s+/g, "-").toLowerCase(); + // 解析 PDF 文件 + const pdfFile = data.pdfFile; + const parsedPdf = await parsePDFFile(pdfFile); + if (parsedPdf.content.length === 0) { + toast.error("无法解析 PDF 文件，请上传有效的 PDF 文件！"); + return; + } + + // 上传pdf + const uploadedPdfBlob = await upload(fileTitle, pdfFile, { + access: "public", + handleUploadUrl: "/api/upload", + contentType: "application/pdf", + }) + + // 上传封面 + let coverUrl: string; + + if (data.coverImage) { + const coverFile = data.coverImage; + const uploadedCoverBlob = await upload(`${fileTitle}_cover.png`, coverFile, { + access: "public", + handleUploadUrl: "/api/upload", + contentType: coverFile.type, + }) + coverUrl = uploadedCoverBlob.url; + } else { + const response = await fetch(parsedPdf.cover); + const blob = await response.blob(); + + const uploadedCoverBlob = await upload(`${fileTitle}_cover.png`, blob, { + access: "public", + handleUploadUrl: "/api/upload", + contentType: "image/png", + }) + coverUrl = uploadedCoverBlob.url; + } + + // 创建图书 + const book = await createBook({ + clerkId: userId, + title: data.title, + author: data.author, + persona: data.voice, + fileURL: uploadedPdfBlob.url, + fileBlobKey: uploadedPdfBlob.pathname, + coverURL: coverUrl, + fileSize: pdfFile.size, + }) + + // 创建失败 + if (!book.success) { + throw new Error("创建图书失败"); + } + + // 创建的图书已存在 + if (book.alreadyExists) { + toast.info("同名的图书已存在！"); + // 清空表单 + form.reset(); + // 已存在就跳转到该图书的详情页面 + router.push(`/books/${book.data.slug}`); + return; + } + + // 创建成功 + // 保存图书片段 + const segments = await saveBookSegments( + book.data._id, + userId, + parsedPdf.content, + ) + + if (!segments.success) { + toast.error("保存图书片段失败"); + throw new Error("保存图书片段失败"); + } + + toast.success("图书创建成功！"); + // 清空表单 + form.reset(); + // 创建新书成功跳转到首页 + router.push(`/`); + + } catch (e) { + console.error(e); + toast.error("上传图书失败，请稍后重试！"); + } finally { setIsLoading(false); - console.log("Form Submitted:", values); - }, 2000); + } } return ( diff --git a/components/ui/sonner.tsx b/components/ui/sonner.tsx new file mode 100644 index 0000000..9280ee5 --- /dev/null +++ b/components/ui/sonner.tsx @@ -0,0 +1,49 @@ +"use client" + +import { useTheme } from "next-themes" +import { Toaster as Sonner, type ToasterProps } from "sonner" +import { CircleCheckIcon, InfoIcon, TriangleAlertIcon, OctagonXIcon, Loader2Icon } from "lucide-react" + +const Toaster = ({ ...props }: ToasterProps) => { + const { theme = "system" } = useTheme() + + return ( + + ), + info: ( + + ), + warning: ( + + ), + error: ( + + ), + loading: ( + + ), + }} + style={ + { + "--normal-bg": "var(--popover)", + "--normal-text": "var(--popover-foreground)", + "--normal-border": "var(--border)", + "--border-radius": "var(--radius)", + } as React.CSSProperties + } + toastOptions={{ + classNames: { + toast: "cn-toast", + }, + }} + {...props} + /> + ) +} + +export { Toaster } diff --git a/database/models/book-segment.model.ts b/database/models/book-segment.model.ts new file mode 100644 index 0000000..7b445be --- /dev/null +++ b/database/models/book-segment.model.ts @@ -0,0 +1,23 @@ +import { IBookSegment } from "@/type"; +import { Schema, models, model } from "mongoose"; + +// 创建 BookSegmentSchema +const BookSegmentSchema = new Schema({ + clerkId: {type: String, required: true}, + bookId: {type: Schema.Types.ObjectId, ref: "Book", required: true, index: true}, + content: {type: String, required: true}, + segmentIndex: {type: Number, required: true, index: true}, + pageNumber: {type: Number, index: true}, + wordCount: {type: Number, required: true}, +}, {timestamps: true}) + +// 为常见查询场景创建复合字段索引，上面定义的"index: true"是单字段索引 +// 当 Vapi 朗读一本书时，它会按顺序获取段落。而这个复合索引可以让查找即时完成，而不是扫描数据集中的每个数据段。 +BookSegmentSchema.index({bookId: 1, segmentIndex: 1}, {unique: true}); +BookSegmentSchema.index({bookId: 1, pageNumber: 1}); +BookSegmentSchema.index({bookId: 1, content: 'text'}); + +// 防止每次 Next.js 开发环境热更时重复创建模型 +const BookSegment = models.BookSegment || model("BookSegment", BookSegmentSchema); + +export default BookSegment; diff --git a/database/models/book.model.ts b/database/models/book.model.ts new file mode 100644 index 0000000..d903b74 --- /dev/null +++ b/database/models/book.model.ts @@ -0,0 +1,22 @@ +import { IBook } from "@/type"; +import { Schema, models, model } from "mongoose"; + +// 创建 BookSchema +const BookSchema = new Schema({ + clerkId: {type: String, required: true}, + title: {type: String, required: true}, + slug: {type: String, required: true, unique: true, lowercase: true, trim: true}, + author: {type: String, required: true}, + persona: {type: String}, + fileURL: {type: String, required: true}, + fileBlobKey: {type: String, required: true}, + coverURL: {type: String}, + coverBlobKey: {type: String}, + fileSize: {type: Number, required: true}, + totalSegments: {type: Number, default: 0}, +}, {timestamps: true}) + +// 防止每次 Next.js 开发环境热更时重复创建模型 +const Book = models.Book || model("Book", BookSchema); + +export default Book; diff --git a/database/models/voice-session.model.ts b/database/models/voice-session.model.ts new file mode 100644 index 0000000..a158909 --- /dev/null +++ b/database/models/voice-session.model.ts @@ -0,0 +1,20 @@ +import { IVoiceSession } from "@/type"; +import { Schema, models, model } from "mongoose"; + +// 创建 VoiceSessionSchema +const VoiceSessionSchema = new Schema({ + clerkId: {type: String, required: true, index: true}, + bookId: {type: Schema.Types.ObjectId, ref: "Book", required: true}, + startedAt: {type: Date, required: true, default: Date.now}, + endedAt: {type: Date}, + durationSeconds: {type: Number, required: true, default: 0}, + billingPeriodStart: {type: Date, required: true, index: true}, +}, {timestamps: true}) + +// 按用户和计费周期查询创建复合索引，对订阅用户收费 +VoiceSessionSchema.index({clerkId: 1, billingPeriodStart: 1}); + +// 防止每次 Next.js 开发环境热更时重复创建模型 +const VoiceSession = models.VoiceSession || model("VoiceSession", VoiceSessionSchema); + +export default VoiceSession; diff --git a/database/mongoose.ts b/database/mongoose.ts new file mode 100644 index 0000000..8101bbd --- /dev/null +++ b/database/mongoose.ts @@ -0,0 +1,43 @@ +import mongoose from "mongoose"; + +const MONGODB_URI = process.env.MONGODB_URI; + +if (!MONGODB_URI) throw new Error("请配置MONGODB_URI 环境变量"); + +// 声明全局变量 mongooseCache +declare global { + var mongooseCache: { + conn: typeof mongoose | null; + promise: Promise | null; + }; +} + +// 获取全局 mongoose 缓存 +let cached = + global.mongooseCache || + (global.mongooseCache = { conn: null, promise: null }); + +// 连接数据库 +export const connectToDatabase = async () => { + // 如果已经连接，直接返回 + if (cached.conn) return cached.conn; + + // 如果没有连接，创建连接 + if (!cached.promise) { + cached.promise = mongoose.connect(MONGODB_URI, { + bufferCommands: false, + serverSelectionTimeoutMS: 30000, // 服务器选择超时 30 秒 + connectTimeoutMS: 30000, // 连接超时 30 秒 + }); + } + + try { + cached.conn = await cached.promise; + } catch (e) { + cached.promise = null; + console.error("数据库连接失败", e); + throw e; + } + console.info("数据库连接成功"); + return cached.conn; +}; diff --git a/lib/actions/book.actions.ts b/lib/actions/book.actions.ts new file mode 100644 index 0000000..2c77f7d --- /dev/null +++ b/lib/actions/book.actions.ts @@ -0,0 +1,142 @@ +"use server"; + +import { connectToDatabase } from "@/database/mongoose"; +import { generateSlug, serializeData } from "../utils"; +import { CreateBook, TextSegment } from "@/type"; +import Book from "@/database/models/book.model"; +import BookSegment from "@/database/models/book-segment.model"; + +export const getAllBooks = async () => { + try { + await connectToDatabase(); + + const books = await Book.find().sort({createdAt: -1}).lean(); + + return { + success: true, + data: serializeData(books), + }; + } catch (e) { + console.error("获取所有图书失败", e); + return { + success: false, + error: e, + }; + } +}; + +// 检查图书是否已存在 +export const checkBookExists = async (title: string) => { + try { + await connectToDatabase(); + + const slug = generateSlug(title); + + const existingBook = await Book.findOne({ slug }).lean(); + + if (existingBook) { + return { + exists: true, + book: serializeData(existingBook), + }; + } + + return { + exists: false, + }; + } catch (e) { + console.error("图书已存在", e); + return { + exists: false, + error: e, + }; + } +}; + +// 创建图书 +export const createBook = async (data: CreateBook) => { + try { + await connectToDatabase(); + + const slug = generateSlug(data.title); + + // 创建图书之前，先检查是否有相同标题的图书已经存在 + const existingBook = await Book.findOne({ slug }).lean(); + if (existingBook) { + return { + success: true, + // 从服务器操作中传递大型或复杂对象时，必须将数据序列化为纯 JSON 对象 + // data: JSON.parse(JSON.stringify(existingBook)), + data: serializeData(existingBook), // 序列化为纯 JSON 对象 + alreadyExists: true, + }; + } + + // Todo: 创建图书前先检查订阅限制 + + const book = await Book.create({ ...data, slug, totalSegments: 0 }); + + return { + success: true, + data: serializeData(book), + }; + } catch (e) { + console.error("创建图书失败", e); + return { + success: false, + error: e, + }; + } +}; + +// 保存图书段落 +export const saveBookSegments = async ( + bookId: string, + clerkId: string, + segments: TextSegment[], +) => { + try { + await connectToDatabase(); + + console.log("正在保存图书段落..."); + + // 准备要插入的段落数据 + const segmentsToInsert = segments.map( + ({ text, segmentIndex, pageNumber, wordCount }) => ({ + clerkId, + bookId, + content: text, + segmentIndex, + pageNumber, + wordCount, + }), + ); + + // 批量插入段落 + await BookSegment.insertMany(segmentsToInsert); + + // 更新图书的总段落数 + await Book.findByIdAndUpdate(bookId, { totalSegments: segments.length }); + + console.log("图书段落保存成功"); + + return { + success: true, + data: { + segmentsCreated: segments.length, + }, + }; + } catch (e) { + console.error("保存图书段落失败", e); + // 保存失败前可能已经存储了一些图书段落，需要删除 + await BookSegment.deleteMany({ bookId }); + // 删除该图书 + await Book.findByIdAndDelete({_id: bookId}); + console.log("由于保存段落失败，已删除该图书和所有图书段落"); + + return { + success: false, + error: e, + }; + } +}; diff --git a/lib/constants.ts b/lib/constants.ts index 27093c5..c1c81da 100644 --- a/lib/constants.ts +++ b/lib/constants.ts @@ -1,8 +1,8 @@ -// Brand color - used in JS files where CSS variables aren't available -export const BRAND_COLOR = '#212a3b'; // Dark blue-gray -export const BRAND_COLOR_HOVER = '#3d485e'; // Medium blue-gray +// 品牌色 - 用于 JS 文件中无法使用 CSS 变量的场景 +export const BRAND_COLOR = '#212a3b'; // 深蓝灰色 +export const BRAND_COLOR_HOVER = '#3d485e'; // 中蓝灰色 -// Sample books for the homepage (using Open Library covers) +// 首页示例书籍（使用 Open Library 封面） export const sampleBooks = [ { _id: '1', @@ -86,54 +86,54 @@ export const sampleBooks = [ }, ]; -// File validation helpers +// 文件校验辅助常量 export const MAX_FILE_SIZE = 50 * 1024 * 1024; // 50MB export const ACCEPTED_PDF_TYPES = ['application/pdf']; export const MAX_IMAGE_SIZE = 10 * 1024 * 1024; // 10MB export const ACCEPTED_IMAGE_TYPES = ['image/jpeg', 'image/jpg', 'image/png', 'image/webp']; -// Pre-configured VAPI assistant ID (hardcoded for this app) -const assistantId = process.env.NEXT_PUBLIC_ASSISTANT_ID; -if (!assistantId || assistantId.trim() === '') { - throw new Error('NEXT_PUBLIC_ASSISTANT_ID environment variable is required but not set. Please configure it in your .env file.'); -} -export const ASSISTANT_ID = assistantId; +// 预配置的 VAPI 助手 ID（在此应用中硬编码） +// const assistantId = process.env.NEXT_PUBLIC_ASSISTANT_ID; +// if (!assistantId || assistantId.trim() === '') { +// throw new Error('NEXT_PUBLIC_ASSISTANT_ID 环境变量是必需的但未设置。请在 .env 文件中配置。'); +// } +// export const ASSISTANT_ID = assistantId; -// 11Labs Voice IDs - Optimized for conversational AI -// Voices selected for natural, engaging book conversations +// 11Labs 语音 ID - 针对对话式 AI 优化 +// 精选适合自然、引人入胜的书籍对话的语音 export const voiceOptions = { - // Male voices - dave: { id: 'CYw3kZ02Hs0563khs1Fj', name: 'Dave', description: 'Young male, British-Essex, casual & conversational' }, - daniel: { id: 'onwK4e9ZLuTAKqWW03F9', name: 'Daniel', description: 'Middle-aged male, British, authoritative but warm' }, - chris: { id: 'iP95p4xoKVk53GoZ742B', name: 'Chris', description: 'Male, casual & easy-going' }, - // Female voices - rachel: { id: '21m00Tcm4TlvDq8ikWAM', name: 'Rachel', description: 'Young female, American, calm & clear' }, - sarah: { id: 'EXAVITQu4vr4xnSDxMaL', name: 'Sarah', description: 'Young female, American, soft & approachable' }, + // 男声 + dave: { id: 'CYw3kZ02Hs0563khs1Fj', name: 'Dave', description: '年轻男性，英式埃塞克斯口音，休闲对话风格' }, + daniel: { id: 'onwK4e9ZLuTAKqWW03F9', name: 'Daniel', description: '中年男性，英式口音，权威而温暖' }, + chris: { id: 'iP95p4xoKVk53GoZ742B', name: 'Chris', description: '男性，休闲随和风格' }, + // 女声 + rachel: { id: '21m00Tcm4TlvDq8ikWAM', name: 'Rachel', description: '年轻女性，美式口音，沉稳清晰' }, + sarah: { id: 'EXAVITQu4vr4xnSDxMaL', name: 'Sarah', description: '年轻女性，美式口音，柔和亲切' }, }; -// Voice categories for the selector UI +// 语音选择器 UI 的分类 export const voiceCategories = { male: ['dave', 'daniel', 'chris'], female: ['rachel', 'sarah'], }; -// Default voice +// 默认语音 export const DEFAULT_VOICE = 'rachel'; -// ElevenLabs voice settings optimized for conversational AI +// ElevenLabs 语音设置，针对对话式 AI 优化 export const VOICE_SETTINGS = { - stability: 0.45, // Lower for more emotional, dynamic delivery (0.30-0.50 is natural) - similarityBoost: 0.75, // Enhances clarity without distortion - style: 0, // Keep at 0 for conversational AI (higher = more latency, less stable) - useSpeakerBoost: true, // Improves voice quality - speed: 1.0, // Natural conversation speed + stability: 0.45, // 较低值使语音更富情感和动态（0.30-0.50 较自然） + similarityBoost: 0.75, // 增强清晰度且不失真 + style: 0, // 对话式 AI 保持为 0（越高延迟越大，越不稳定） + useSpeakerBoost: true, // 提升语音质量 + speed: 1.0, // 自然对话速度 }; -// VAPI configuration for natural conversation -// NOTE: These settings should be configured in the VAPI Dashboard for the assistant -// They are kept here for reference and documentation purposes +// VAPI 自然对话配置 +// 注意：这些设置应在 VAPI 控制台中为助手进行配置 +// 此处保留仅供参考和文档记录 export const VAPI_DASHBOARD_CONFIG = { - // Turn-taking settings + // 轮流发言设置 startSpeakingPlan: { smartEndpointingEnabled: true, waitSeconds: 0.4, @@ -143,18 +143,18 @@ export const VAPI_DASHBOARD_CONFIG = { voiceSeconds: 0.2, backoffSeconds: 1.0, }, - // Timing settings + // 时间设置 silenceTimeoutSeconds: 30, responseDelaySeconds: 0.4, llmRequestDelaySeconds: 0.1, - // Conversation features + // 对话功能 backgroundDenoisingEnabled: true, backchannelingEnabled: true, fillerInjectionEnabled: false, }; -// Clerk appearance overrides - Warm Literary Style -// Note: Tailwind requires static class names at build time, so we hardcode color values here +// Clerk 外观覆盖 - 温暖文艺风格 +// 注意：Tailwind 在构建时需要静态类名，因此这里硬编码颜色值 export const CLERK_AUTH_APPEARANCE_OVERRIDE = { rootBox: 'mx-auto', card: 'shadow-none border-none rounded-xl bg-transparent', diff --git a/lib/utils.ts b/lib/utils.ts index bd0c391..0d1eb9d 100644 --- a/lib/utils.ts +++ b/lib/utils.ts @@ -1,6 +1,202 @@ -import { clsx, type ClassValue } from "clsx" -import { twMerge } from "tailwind-merge" +import { TextSegment } from '@/type'; +import { clsx, type ClassValue } from 'clsx'; +import { twMerge } from 'tailwind-merge'; +import { DEFAULT_VOICE, voiceOptions } from './constants'; + export function cn(...inputs: ClassValue[]) { - return twMerge(clsx(inputs)) + return twMerge(clsx(inputs)); +} + +// 将 Mongoose 文档序列化为纯 JSON 对象（去除 ObjectId、Date 等特殊类型） +export const serializeData = (data: T): T => JSON.parse(JSON.stringify(data)); + +// 自动生成书籍文件名称的 slug 标识 +// 比如 generateSlug("The Three-Body Problem.pdf") → "the-three-body-problem" +// 支持中文/日文/韩文等 Unicode 字符 +export function generateSlug(text: string): string { + return text + .replace(/\.[^/.]+$/, '') // 移除文件扩展名（.pdf、.txt 等） + .toLowerCase() // 转换为小写 + .trim() // 去除首尾空白 + .replace(/[^\p{L}\p{N}\s-]/gu, '') // 移除特殊字符（保留 Unicode 字母、数字、空格和连字符） + .replace(/[\s_]+/g, '-') // 将空格和下划线替换为连字符 + .replace(/^-+|-+$/g, ''); // 去除首尾多余的连字符 +} + +// 转义正则表达式特殊字符，防止 ReDoS 攻击 +export const escapeRegex = (str: string): string => { + return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); +}; + +// CJK 统一表意文字的 Unicode 范围正则，用于检测和拆分中日韩文本 +const CJK_RANGE = + /[\u2E80-\u2FFF\u3040-\u309F\u30A0-\u30FF\u3400-\u4DBF\u4E00-\u9FFF\uF900-\uFAFF\u{20000}-\u{2A6DF}\u{2A700}-\u{2B73F}\u{2B740}-\u{2B81F}]/u; + +/** + * 将文本分词为 token 数组。 + * - 对于空格分隔的语言（英文等），按空白符拆分。 + * - 对于 CJK 文本，将每个 CJK 字符视为独立 token， + * 连续的非 CJK 文本（如英文单词、数字）作为整体 token 保留。 + */ +function tokenize(text: string): string[] { + // 如果文本中不包含 CJK 字符，直接按空白符拆分（兼容原逻辑） + if (!CJK_RANGE.test(text)) { + return text.split(/\s+/).filter((w) => w.length > 0); + } + + // 匹配：单个 CJK 字符 | 连续非 CJK 非空白字符 | （跳过空白） + const tokenRegex = + /([\u2E80-\u2FFF\u3040-\u309F\u30A0-\u30FF\u3400-\u4DBF\u4E00-\u9FFF\uF900-\uFAFF\u{20000}-\u{2A6DF}\u{2A700}-\u{2B73F}\u{2B740}-\u{2B81F}])|([^\s\u2E80-\u2FFF\u3040-\u309F\u30A0-\u30FF\u3400-\u4DBF\u4E00-\u9FFF\uF900-\uFAFF\u{20000}-\u{2A6DF}\u{2A700}-\u{2B73F}\u{2B740}-\u{2B81F}]+)/gu; + + const tokens: string[] = []; + let match: RegExpExecArray | null; + while ((match = tokenRegex.exec(text)) !== null) { + tokens.push(match[0]); + } + return tokens; } + +// 将文本内容分割为段落，用于 MongoDB 存储和搜索 +// 支持 CJK 语言：每个 CJK 字符计为一个 token +export const splitIntoSegments = ( + text: string, + segmentSize: number = 500, // 每个段落的最大 token 数 + overlapSize: number = 50, // 段落之间重叠的 token 数，用于保持上下文连贯 +): TextSegment[] => { + // 校验参数，防止死循环 + if (segmentSize <= 0) { + throw new Error('segmentSize must be greater than 0'); + } + if (overlapSize < 0 || overlapSize >= segmentSize) { + throw new Error('overlapSize must be >= 0 and < segmentSize'); + } + + const tokens = tokenize(text); + const segments: TextSegment[] = []; + + let segmentIndex = 0; + let startIndex = 0; + + while (startIndex < tokens.length) { + const endIndex = Math.min(startIndex + segmentSize, tokens.length); + const segmentTokens = tokens.slice(startIndex, endIndex); + // CJK token 之间不加空格，非 CJK token 之间用空格连接 + const segmentText = segmentTokens.reduce((acc, token, i) => { + if (i === 0) return token; + const prevIsCJK = CJK_RANGE.test(segmentTokens[i - 1]); + const currIsCJK = CJK_RANGE.test(token); + // 两个 CJK 字符之间、CJK 字符与非 CJK 之间不加空格 + return acc + (prevIsCJK || currIsCJK ? '' : ' ') + token; + }, ''); + + segments.push({ + text: segmentText, + segmentIndex, + wordCount: segmentTokens.length, + }); + + segmentIndex++; + + if (endIndex >= tokens.length) break; + startIndex = endIndex - overlapSize; + } + + return segments; +}; + +// 根据角色标识或语音 ID 获取语音数据 +export const getVoice = (persona?: string) => { + if (!persona) return voiceOptions[DEFAULT_VOICE]; + + // 按语音 ID 查找 + const voiceEntry = Object.values(voiceOptions).find((v) => v.id === persona); + if (voiceEntry) return voiceEntry; + + // 按 key 查找 + const voiceByKey = voiceOptions[persona as keyof typeof voiceOptions]; + if (voiceByKey) return voiceByKey; + + // 默认回退 + return voiceOptions[DEFAULT_VOICE]; +}; + +// 将秒数格式化为 MM:SS 格式 +export const formatDuration = (seconds: number): string => { + const mins = Math.floor(seconds / 60); + const secs = seconds % 60; + return `${mins}:${secs.toString().padStart(2, '0')}`; +}; + +export async function parsePDFFile(file: File) { + // eslint-disable-next-line @typescript-eslint/no-explicit-any -- pdfjs-dist 动态导入，类型推导复杂 + let pdfDocument: any = null; + + try { + const pdfjsLib = await import('pdfjs-dist'); + + if (typeof window !== 'undefined') { + pdfjsLib.GlobalWorkerOptions.workerSrc = new URL( + 'pdfjs-dist/build/pdf.worker.min.mjs', + import.meta.url, + ).toString(); + } + + // 将文件读取为 ArrayBuffer + const arrayBuffer = await file.arrayBuffer(); + + // 加载 PDF 文档 + const loadingTask = pdfjsLib.getDocument({ data: arrayBuffer }); + pdfDocument = await loadingTask.promise; + + // 渲染第一页作为封面图片 + const firstPage = await pdfDocument.getPage(1); + const viewport = firstPage.getViewport({ scale: 2 }); // 2 倍缩放以获得更高画质 + + const canvas = document.createElement('canvas'); + canvas.width = viewport.width; + canvas.height = viewport.height; + const context = canvas.getContext('2d'); + + if (!context) { + throw new Error('Could not get canvas context'); + } + + await firstPage.render({ + canvasContext: context, + viewport: viewport, + }).promise; + + // 将 Canvas 转换为 Data URL + const coverDataURL = canvas.toDataURL('image/png'); + + // 从所有页面提取文本 + let fullText = ''; + + for (let pageNum = 1; pageNum <= pdfDocument.numPages; pageNum++) { + const page = await pdfDocument.getPage(pageNum); + const textContent = await page.getTextContent(); + const pageText = textContent.items + .filter((item: any) => 'str' in item) + .map((item: { str: string; }) => (item as { str: string }).str) + .join(' '); + fullText += pageText + '\n'; + } + + // 将文本分割为段落，用于搜索 + const segments = splitIntoSegments(fullText); + + return { + content: segments, + cover: coverDataURL, + }; + } catch (error) { + console.error('PDF 解析失败:', error); + throw new Error(`PDF 文件解析失败: ${error instanceof Error ? error.message : String(error)}`); + } finally { + // 无论成功或失败，始终清理 PDF 文档资源，防止内存泄漏 + if (pdfDocument) { + await pdfDocument.destroy(); + } + } +} \ No newline at end of file diff --git a/next.config.ts b/next.config.ts index ce7ab18..033493f 100644 --- a/next.config.ts +++ 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"node": ">=18" + }, + "funding": { + "url": "https://github.com/sponsors/sindresorhus" + } + }, "node_modules/tiny-invariant": { "version": "1.3.3", "resolved": "https://registry.npmjs.org/tiny-invariant/-/tiny-invariant-1.3.3.tgz", @@ -11120,6 +11645,18 @@ "node": ">=16" } }, + "node_modules/tr46": { + "version": "5.1.1", + "resolved": "https://registry.npmjs.org/tr46/-/tr46-5.1.1.tgz", + "integrity": "sha512-hdF5ZgjTqgAntKkklYw0R03MG2x/bSzTtkxmIRw/sTNV8YXsCJ1tfLAX23lhxhHJlEf3CRCOCGGWw3vI3GaSPw==", + "license": "MIT", + "dependencies": { + "punycode": "^2.3.1" + }, + "engines": { + "node": ">=18" + } + }, "node_modules/ts-api-utils": { "version": "2.5.0", "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.5.0.tgz", @@ -11361,6 +11898,15 @@ "url": "https://github.com/sponsors/ljharb" } }, + "node_modules/undici": { + "version": "6.24.1", + "resolved": "https://registry.npmjs.org/undici/-/undici-6.24.1.tgz", + "integrity": 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"webidl-conversions": "^7.0.0" + }, + "engines": { + "node": ">=18" + } + }, "node_modules/which": { "version": "2.0.2", "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz", diff --git a/package.json b/package.json index 38a7dc8..4d64c15 100644 --- a/package.json +++ b/package.json @@ -14,15 +14,21 @@ "@hookform/resolvers": "^5.2.2", "@radix-ui/react-label": "^2.1.8", "@radix-ui/react-slot": "^1.2.4", + "@vercel/blob": "^2.3.3", "class-variance-authority": "^0.7.1", "clsx": "^2.1.1", "lucide-react": "^0.577.0", + "mongodb": "^7.1.1", + "mongoose": "^9.3.3", "next": "16.2.1", + "next-themes": "^0.4.6", + "pdfjs-dist": "^5.6.205", "radix-ui": "^1.4.3", "react": "19.2.4", "react-dom": "19.2.4", "react-hook-form": "^7.72.0", "shadcn": "^4.1.0", + "sonner": "^2.0.7", "tailwind-merge": "^3.5.0", "tw-animate-css": "^1.4.0", "zod": "^4.3.6" @@ -37,4 +43,4 @@ "tailwindcss": "^4", "typescript": "^5" } -} \ No newline at end of file +}