2025-09-16

deploy.sh

@@ -0,0 +1,208 @@
+#!/bin/bash
+
+# Next.js 项目部署脚本
+set -e  # 遇到任何错误立即退出
+
+# ===== 配置区域 =====
+SERVER_IP="43.156.84.214"
+SERVER_USER="ubuntu"
+PROJECT_NAME="learn-languages"
+LOCAL_PROJECT_DIR="/home/goddonebianu/Code/learn-languages"
+REMOTE_PROJECT_DIR="/home/$SERVER_USER/$PROJECT_NAME"
+BRANCH="main"  # 要部署的分支
+NODE_ENV="production"
+PORT="3000"  # 应用运行端口
+# ===================
+
+# 颜色输出函数
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+log_info() {
+    echo -e "${GREEN}[INFO]${NC} $1"
+}
+
+log_warn() {
+    echo -e "${YELLOW}[WARN]${NC} $1"
+}
+
+log_error() {
+    echo -e "${RED}[ERROR]${NC} $1"
+}
+
+# 检查本地更改
+check_local_changes() {
+    log_info "检查本地更改..."
+    if ! git diff --quiet; then
+        log_warn "发现未提交的更改，建议先提交更改"
+        read -p "继续部署？(y/N): " -n 1 -r
+        echo
+        if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+            exit 1
+        fi
+    fi
+}
+
+# 构建项目
+build_project() {
+    log_info "开始构建项目..."
+    cd "$LOCAL_PROJECT_DIR"
+    
+    # 安装依赖
+    if ! npm ci --only=production; then
+        log_error "npm install 失败"
+        exit 1
+    fi
+    
+    # 构建项目
+    if ! npm run build; then
+        log_error "构建失败"
+        exit 1
+    fi
+    
+    log_info "项目构建成功"
+}
+
+# 创建部署包
+create_deployment_package() {
+    log_info "创建部署包..."
+    local temp_dir=$(mktemp -d)
+    local package_name="${PROJECT_NAME}-$(date +%Y%m%d-%H%M%S).tar.gz"
+    
+    # 复制需要的文件
+    cp -r package.json package-lock.json next.config.js* .next public "$temp_dir/"
+    
+    # 如果有环境文件也复制
+    if [ -f .env.production ]; then
+        cp .env.production "$temp_dir/"
+    fi
+    
+    # 创建压缩包
+    cd "$temp_dir"
+    tar -czf "/tmp/$package_name" .
+    
+    echo "$package_name"
+}
+
+# 部署到服务器
+deploy_to_server() {
+    local package_name=$1
+    
+    log_info "开始部署到服务器..."
+    
+    # 上传部署包
+    if ! scp "/tmp/$package_name" $SERVER_USER@$SERVER_IP:/tmp/; then
+        log_error "文件上传失败"
+        exit 1
+    fi
+    
+    # 执行远程部署命令
+    ssh $SERVER_USER@$SERVER_IP << EOF
+        set -e
+        
+        echo "在服务器上执行部署..."
+        
+        # 创建备份目录
+        BACKUP_DIR="$REMOTE_PROJECT_DIR-backup-\$(date +%Y%m%d-%H%M%S)"
+        if [ -d "$REMOTE_PROJECT_DIR" ]; then
+            mkdir -p "\$BACKUP_DIR"
+            cp -r "$REMOTE_PROJECT_DIR"/* "\$BACKUP_DIR/" || true
+        fi
+        
+        # 创建项目目录
+        mkdir -p "$REMOTE_PROJECT_DIR"
+        
+        # 解压新版本
+        tar -xzf "/tmp/$package_name" -C "$REMOTE_PROJECT_DIR"
+        
+        # 清理临时文件
+        rm -f "/tmp/$package_name"
+        
+        # 安装生产依赖
+        cd "$REMOTE_PROJECT_DIR"
+        npm ci --only=production
+        
+        echo "部署文件准备完成"
+EOF
+    
+    log_info "文件部署完成"
+}
+
+# 重启服务
+restart_service() {
+    log_info "重启服务..."
+    
+    ssh $SERVER_USER@$SERVER_IP << EOF
+        set -e
+        
+        cd "$REMOTE_PROJECT_DIR"
+        
+        # 使用 PM2 重启应用
+        if command -v pm2 &> /dev/null; then
+            # 如果应用已经在运行，重新加载
+            if pm2 list | grep -q "$PROJECT_NAME"; then
+                pm2 reload $PROJECT_NAME --update-env
+            else
+                # 第一次启动
+                export PORT=$PORT
+                pm2 start npm --name "$PROJECT_NAME" -- start
+                pm2 save
+                pm2 startup 2>/dev/null || true
+            fi
+        else
+            # 如果没有 PM2，直接启动（不推荐生产环境）
+            echo "警告: 未找到 PM2，直接启动进程"
+            export PORT=$PORT
+            npm start &
+        fi
+        
+        echo "等待服务启动..."
+        sleep 5
+        
+        # 检查服务是否正常运行
+        if curl -f http://localhost:$PORT > /dev/null 2>&1; then
+            echo "服务启动成功!"
+        else
+            echo "服务启动可能有问题，请检查日志"
+            exit 1
+        fi
+EOF
+    
+    log_info "服务重启完成"
+}
+
+# 清理工作
+cleanup() {
+    log_info "清理临时文件..."
+    rm -f "/tmp/${PROJECT_NAME}-*.tar.gz" 2>/dev/null || true
+}
+
+# 主部署流程
+main() {
+    log_info "开始部署 $PROJECT_NAME 到 $SERVER_IP"
+    
+    # 检查是否在项目目录
+    if [ ! -f "$LOCAL_PROJECT_DIR/package.json" ]; then
+        log_error "请在正确的 Next.js 项目目录中运行"
+        exit 1
+    fi
+    
+    check_local_changes
+    build_project
+    local package_name=$(create_deployment_package)
+    deploy_to_server "$package_name"
+    restart_service
+    cleanup
+    
+    log_info "${GREEN}部署成功完成!${NC}"
+    log_info "应用地址: http://$SERVER_IP:$PORT"
+}
+
+# 错误处理
+trap 'log_error "部署过程中断"; cleanup; exit 1' INT TERM
+trap 'cleanup' EXIT
+
+# 执行主函数
+main "$@"

src/app/page.tsx

@@ -1,103 +1,16 @@
-import Image from "next/image";
+function Link(
+  {href, label}: {href: string, label: string}
+) {
+  return (
+    <a className="border-2 border-black m-1 p-5 rounded font-bold hover:bg-gray-200" href={href}>{label}</a>
+  )
+}
 
 export default function Home() {
   return (
-    <div className="font-sans grid grid-rows-[20px_1fr_20px] items-center justify-items-center min-h-screen p-8 pb-20 gap-16 sm:p-20">
+    <div className="w-[500px] m-auto mt-[100px] h-[300px]">
-      <main className="flex flex-col gap-[32px] row-start-2 items-center sm:items-start">
+      <Link href="/srt-player" label="srt-player"></Link>
-        <Image
+      <Link href="/word-board" label="word-board"></Link>
-          className="dark:invert"
-          src="/next.svg"
-          alt="Next.js logo"
-          width={180}
-          height={38}
-          priority
-        />
-        <ol className="font-mono list-inside list-decimal text-sm/6 text-center sm:text-left">
-          <li className="mb-2 tracking-[-.01em]">
-            Get started by editing{" "}
-            <code className="bg-black/[.05] dark:bg-white/[.06] font-mono font-semibold px-1 py-0.5 rounded">
-              src/app/page.tsx
-            </code>
-            .
-          </li>
-          <li className="tracking-[-.01em]">
-            Save and see your changes instantly.
-          </li>
-        </ol>
-
-        <div className="flex gap-4 items-center flex-col sm:flex-row">
-          <a
-            className="rounded-full border border-solid border-transparent transition-colors flex items-center justify-center bg-foreground text-background gap-2 hover:bg-[#383838] dark:hover:bg-[#ccc] font-medium text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5 sm:w-auto"
-            href="https://vercel.com/new?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            <Image
-              className="dark:invert"
-              src="/vercel.svg"
-              alt="Vercel logomark"
-              width={20}
-              height={20}
-            />
-            Deploy now
-          </a>
-          <a
-            className="rounded-full border border-solid border-black/[.08] dark:border-white/[.145] transition-colors flex items-center justify-center hover:bg-[#f2f2f2] dark:hover:bg-[#1a1a1a] hover:border-transparent font-medium text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5 w-full sm:w-auto md:w-[158px]"
-            href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            Read our docs
-          </a>
-        </div>
-      </main>
-      <footer className="row-start-3 flex gap-[24px] flex-wrap items-center justify-center">
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/file.svg"
-            alt="File icon"
-            width={16}
-            height={16}
-          />
-          Learn
-        </a>
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/window.svg"
-            alt="Window icon"
-            width={16}
-            height={16}
-          />
-          Examples
-        </a>
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://nextjs.org?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/globe.svg"
-            alt="Globe icon"
-            width={16}
-            height={16}
-          />
-          Go to nextjs.org →
-        </a>
-      </footer>
     </div>
   );
 }

src/app/srt-player/components/AppCard.tsx

@@ -0,0 +1,25 @@
+'use client'
+
+import { useRef, useState } from "react";
+import UploadArea from "./UploadArea";
+import VideoPanel from "./VideoPlayer/VideoPanel";
+
+export default function AppCard() {
+    const videoRef = useRef<HTMLVideoElement>(null);
+
+    const [videoUrl, setVideoUrl] = useState<string | null>(null);
+    const [srtUrl, setSrtUrl] = useState<string | null>(null);
+
+    return (
+        <div className="min-w-[410px] max-h-[1000px] max-w-[1400px] flex items-center flex-col bg-gray-200 rounded shadow-2xl w-8/12 py-12">
+            <p className="text-4xl font-extrabold">SRT Video Player</p>
+            <VideoPanel
+                videoUrl={videoUrl}
+                srtUrl={srtUrl}
+                ref={videoRef} />
+            <UploadArea
+                setVideoUrl={setVideoUrl}
+                setSrtUrl={setSrtUrl} />
+        </div>
+    );
+}

src/app/srt-player/components/Button.tsx

@@ -0,0 +1,7 @@
+export default function Button({ label, onClick }: { label: string, onClick?: () => void }) {
+  return (
+    <button onClick={onClick} className="m-1 px-2 py-1 rounded bg-white shadow-2xs font-bold hover:bg-gray-300">
+      {label}
+    </button>
+  );
+}

src/app/srt-player/components/UploadArea.tsx

@@ -0,0 +1,75 @@
+import { useRef, useState } from "react";
+import Button from "./Button";
+
+export default function UploadArea(
+  {
+    setVideoUrl,
+    setSrtUrl
+  }: {
+    setVideoUrl: (url: string | null) => void;
+    setSrtUrl: (url: string | null) => void;
+  }
+) {
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  const [videoFile, setVideoFile] = useState<File | null>(null);
+  const [SrtFile, setSrtFile] = useState<File | null>(null);
+
+  const uploadVideo = () => {
+    const input = inputRef.current;
+    if (input) {
+      input.setAttribute('accept', 'video/*');
+      input.click();
+      input.onchange = () => {
+        const file = input.files?.[0];
+        if (file) {
+          setVideoFile(file);
+          setVideoUrl(URL.createObjectURL(file));
+        }
+      };
+    }
+  }
+  const uploadSRT = () => {
+    const input = inputRef.current;
+    if (input) {
+      input.setAttribute('accept', '.srt');
+      input.click();
+      input.onchange = () => {
+        const file = input.files?.[0];
+        if (file) {
+          setSrtFile(file);
+          setSrtUrl(URL.createObjectURL(file));
+        }
+      };
+    }
+  }
+  return (
+    <div className="flex flex-col">
+      <table className="border border-black border-collapse">
+        <thead>
+          <tr className="divide-x divide-black">
+            <th className="border border-black px-2 py-1">File Name</th>
+            <th className="border border-black px-2 py-1">Type</th>
+            <th className="border border-black px-2 py-1">Size</th>
+            <th className="border border-black px-2 py-1">Actions</th>
+          </tr>
+        </thead>
+        <tbody className="divide-y divide-black">
+          <tr className="divide-x divide-black">
+            <td className="px-2 py-1">{videoFile?.name}</td>
+            <td className="px-2 py-1">Video</td>
+            <td className="px-2 py-1">{videoFile ? (videoFile.size / 1024 / 1024).toFixed(2) + 'MB' : null}</td>
+            <td className="px-2 py-1"><Button label="Upload" onClick={uploadVideo} /></td>
+          </tr>
+          <tr className="divide-x divide-black">
+            <td className="px-2 py-1">{SrtFile?.name}</td>
+            <td className="px-2 py-1">SRT</td>
+            <td className="px-2 py-1">{SrtFile ? (SrtFile.size / 1024 / 1024).toFixed(2) + 'MB' : null}</td>
+            <td className="px-2 py-1"><Button label="Upload" onClick={uploadSRT} /></td>
+          </tr>
+        </tbody>
+      </table>
+      <input type="file" className="hidden" ref={inputRef} />
+    </div>
+  )
+}

src/app/srt-player/components/VideoPlayer/SubtitleDisplay.tsx

@@ -0,0 +1,28 @@
+export default function SubtitleDisplay({ subtitle }: { subtitle: string }) {
+    const words = subtitle.match(/\b[\w']+(?:-[\w']+)*\b/g) || [];
+    const goto = (url: string) => {
+        window.open(url, '_blank');
+    }
+    const inspect = (word: string) => {
+        return () => {
+            word = word.toLowerCase();
+            goto(`https://www.youdao.com/result?word=${word}&lang=en`);
+        }
+    }
+    let i = 0;
+    return (
+        <div className="subtitle overflow-y-auto h-16 mt-2 break-words bg-black/50 font-sans text-white text-center text-2xl">
+            {
+                words.map((v) => (
+                    <span
+                        onClick={inspect(v)}
+                        key={i++}
+                        className="hover:bg-gray-700 hover:underline hover:cursor-pointer"
+                    >
+                        {v + ' '}
+                    </span>
+                ))
+            }
+        </div>
+    );
+}

src/app/srt-player/components/VideoPlayer/VideoPanel.tsx

@@ -0,0 +1,177 @@
+import { useState, useRef, forwardRef, useEffect, KeyboardEvent, useCallback } from "react";
+import Button from "../Button";
+import { getIndex, getNearistIndex, parseSrt } from "../../subtitle";
+import SubtitleDisplay from "./SubtitleDisplay";
+
+type VideoPanelProps = {
+    videoUrl: string | null;
+    srtUrl: string | null;
+};
+
+const VideoPanel = forwardRef<HTMLVideoElement, VideoPanelProps>((
+    { videoUrl, srtUrl }, videoRef
+) => {
+    videoRef = videoRef as React.RefObject<HTMLVideoElement>;
+    const [isPlaying, setIsPlaying] = useState<boolean>(false);
+    const [srtLength, setSrtLength] = useState<number>(0);
+    const [progress, setProgress] = useState<number>(-1);
+    const [autoPause, setAutoPause] = useState<boolean>(true);
+    const [spanText, setSpanText] = useState<string>('');
+    const [subtitle, setSubtitle] = useState<string>('');
+    const parsedSrtRef = useRef<{ start: number; end: number; text: string; }[] | null>(null);
+    const rafldRef = useRef<number>(0);
+    const ready = useRef({
+        'vid': false,
+        'sub': false,
+        'all': function () { return this.vid && this.sub }
+    });
+
+    const togglePlayPause = useCallback(() => {
+        if (!videoUrl) return;
+
+        const video = videoRef.current;
+        if (!video) return;
+        if (video.paused || video.currentTime === 0) {
+            video.play();
+        } else {
+            video.pause();
+        }
+        setIsPlaying(!video.paused);
+    }, [videoRef, videoUrl]);
+
+    useEffect(() => {
+        const cb = () => {
+            if (ready.current.all()) {
+                if (!parsedSrtRef.current) {
+                    ;
+                } else if (isPlaying) {
+                    // 这里负责显示当前时间的字幕与自动暂停
+                    const srt = parsedSrtRef.current;
+                    const ct = videoRef.current?.currentTime as number;
+                    const index = getIndex(srt, ct);
+                    if (index !== null) {
+                        setSubtitle(srt[index].text)
+                        if (autoPause && ct >= (srt[index].end - 0.05) && ct < srt[index].end) {
+                            videoRef.current!.currentTime = srt[index].start;
+                            togglePlayPause();
+                        }
+                    } else {
+                        setSubtitle('');
+                    }
+                } else {
+                    ;
+                }
+            }
+            rafldRef.current = requestAnimationFrame(cb);
+        }
+        rafldRef.current = requestAnimationFrame(cb);
+        return () => {
+            cancelAnimationFrame(rafldRef.current);
+        }
+    }, [autoPause, isPlaying, togglePlayPause, videoRef]);
+
+    useEffect(() => {
+        if (videoUrl && videoRef.current) {
+            videoRef.current.src = videoUrl;
+            videoRef.current.load();
+            setIsPlaying(false);
+            ready.current['vid'] = true;
+        }
+    }, [videoRef, videoUrl]);
+    useEffect(() => {
+        if (srtUrl) {
+            fetch(srtUrl)
+                .then(response => response.text())
+                .then(data => {
+                    parsedSrtRef.current = parseSrt(data);
+                    setSrtLength(parsedSrtRef.current.length);
+                    ready.current['sub'] = true;
+                });
+        }
+    }, [srtUrl]);
+
+    const timeUpdate = () => {
+        if (!parsedSrtRef.current || !videoRef.current) return;
+        const index = getIndex(parsedSrtRef.current, videoRef.current.currentTime);
+        if (!index) return;
+        setSpanText(`${index + 1}/${parsedSrtRef.current.length}`)
+    }
+
+    const handleSeek = (e: React.ChangeEvent<HTMLInputElement>) => {
+        if (videoRef.current && parsedSrtRef.current) {
+            const newProgress = parseInt(e.target.value);
+            videoRef.current.currentTime = parsedSrtRef.current[newProgress]?.start || 0;
+            setProgress(newProgress);
+        }
+    };
+
+    const handleAutoPauseToggle = () => {
+        setAutoPause(!autoPause);
+    };
+
+    const next = () => {
+        if (!parsedSrtRef.current || !videoRef.current) return;
+        const i = getNearistIndex(parsedSrtRef.current, videoRef.current.currentTime);
+        if (i != null && i + 1 < parsedSrtRef.current.length) {
+            videoRef.current.currentTime = parsedSrtRef.current[i + 1].start;
+            videoRef.current.play();
+            setIsPlaying(true);
+        }
+    }
+
+    const previous = () => {
+        if (!parsedSrtRef.current || !videoRef.current) return;
+        const i = getNearistIndex(parsedSrtRef.current, videoRef.current.currentTime);
+        if (i != null && i - 1 >= 0) {
+            videoRef.current.currentTime = parsedSrtRef.current[i - 1].start;
+            videoRef.current.play();
+            setIsPlaying(true);
+        }
+    }
+
+    const restart = () => {
+        if (!parsedSrtRef.current || !videoRef.current) return;
+        const i = getNearistIndex(parsedSrtRef.current, videoRef.current.currentTime);
+        if (i != null && i >= 0) {
+            videoRef.current.currentTime = parsedSrtRef.current[i].start;
+            videoRef.current.play();
+            setIsPlaying(true);
+        }
+    }
+
+    const handleKeyDownEvent = (e: KeyboardEvent<HTMLDivElement>) => {
+        if (e.key === 'n') {
+            next();
+        } else if (e.key === 'p') {
+            previous();
+        } else if (e.key === ' ') {
+            togglePlayPause();
+        } else if (e.key === 'r') {
+            restart();
+        } else if (e.key === 'a') {
+            ; handleAutoPauseToggle();
+        }
+    }
+
+    return (
+        <div className="flex flex-col w-9/12" onKeyDown={handleKeyDownEvent}>
+            <video className="max-h-80" ref={videoRef} onTimeUpdate={timeUpdate}></video>
+            <SubtitleDisplay subtitle={subtitle}></SubtitleDisplay>
+            <div className="buttons">
+                <ul className="">
+                    <Button label={isPlaying ? 'PAUSE' : 'PLAY'} onClick={togglePlayPause}></Button>
+                    <Button label="NEXT" onClick={next}></Button>
+                    <Button label="PREVIOUS" onClick={previous}></Button>
+                    <Button label="RESTART" onClick={restart}></Button>
+                    <Button label={`AUTOPAUSE(${autoPause ? 'Y' : 'N'})`} onClick={handleAutoPauseToggle}></Button>
+                </ul>
+            </div>
+            <input className="seekbar" type="range" min={0} max={srtLength} onChange={handleSeek} step={1} value={progress}></input>
+            <span>{spanText}</span>
+        </div>
+    );
+});
+
+VideoPanel.displayName = 'VideoPanel';
+
+export default VideoPanel;

src/app/srt-player/layout.tsx

@@ -0,0 +1,34 @@
+import type { Metadata } from "next";
+import { Geist, Geist_Mono } from "next/font/google";
+import "../globals.css";
+
+const geistSans = Geist({
+  variable: "--font-geist-sans",
+  subsets: ["latin"],
+});
+
+const geistMono = Geist_Mono({
+  variable: "--font-geist-mono",
+  subsets: ["latin"],
+});
+
+export const metadata: Metadata = {
+  title: "SRT Video Player",
+  description: "Practice spoken English",
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <html lang="en">
+      <body
+        className={`${geistSans.variable} ${geistMono.variable} antialiased`}
+      >
+        {children}
+      </body>
+    </html>
+  );
+}

src/app/srt-player/page.tsx

@@ -0,0 +1,9 @@
+import AppCard from "./components/AppCard";
+
+export default function Home() {
+  return (
+    <div className="flex w-screen h-screen items-center justify-center">
+      <AppCard />
+    </div>
+  );
+}

src/app/srt-player/subtitle.ts

@@ -0,0 +1,52 @@
+export function parseSrt(data: string) {
+    const lines = data.split(/\r?\n/);
+    const result = [];
+    const re = new RegExp('(\\d{2}:\\d{2}:\\d{2},\\d{3})\\s*-->\\s*(\\d{2}:\\d{2}:\\d{2},\\d{3})');
+    let i = 0;
+    while (i < lines.length) {
+        if (!lines[i].trim()) { i++; continue; }
+        i++;
+        if (i >= lines.length) break;
+        const timeMatch = lines[i].match(re);
+        if (!timeMatch) { i++; continue; }
+        const start = toSeconds(timeMatch[1]);
+        const end = toSeconds(timeMatch[2]);
+        i++;
+        let text = '';
+        while (i < lines.length && lines[i].trim()) {
+            text += lines[i] + '\n';
+            i++;
+        }
+        result.push({ start, end, text: text.trim() });
+        i++;
+    }
+    return result;
+}
+
+export function getNearistIndex(srt: { start: number; end: number; text: string; }[], ct: number) {
+    for (let i = 0; i < srt.length; i++) {
+        const s = srt[i];
+        const l = ct - s.start >= 0;
+        const r = ct - s.end >= 0;
+        if (!(l || r)) return i - 1;
+        if (l && (!r)) return i;
+    }
+}
+
+export function getIndex(srt: { start: number; end: number; text: string; }[], ct: number) {
+    for (let i = 0; i < srt.length; i++) {
+        if (ct >= srt[i].start && ct <= srt[i].end) {
+            return i;
+        }
+    }
+    return null;
+}
+
+export function getSubtitle(srt: { start: number; end: number; text: string; }[], currentTime: number) {
+    return srt.find(sub => currentTime >= sub.start && currentTime <= sub.end) || null;
+}
+
+function toSeconds(timeStr: string): number {
+    const [h, m, s] = timeStr.replace(',', '.').split(':');
+    return parseFloat((parseInt(h) * 3600 + parseInt(m) * 60 + parseFloat(s)).toFixed(3));
+}

src/app/word-board/Button.tsx

@@ -0,0 +1,7 @@
+export default function Button({ label, onClick }: { label: string, onClick?: () => void }) {
+  return (
+    <button onClick={onClick} className="m-1 px-2 py-1 rounded bg-white shadow-2xs font-bold hover:bg-gray-300">
+      {label}
+    </button>
+  );
+}

src/app/word-board/WordBoard.tsx

@@ -0,0 +1,42 @@
+'use client';
+
+export default function WordBoard(
+    { words }: {
+        words: [
+            {
+                word: string,
+                x: number,
+                y: number
+            }
+        ]
+    }
+) {
+    const inspect = (word: string) => {
+        const goto = (url: string) => {
+            window.open(url, '_blank');
+        }
+        return () => {
+            word = word.toLowerCase();
+            goto(`https://www.youdao.com/result?word=${word}&lang=en`);
+        }
+    }
+    return (
+        <div className="relative rounded bg-white w-[1000px] h-[600px]">
+            {words.map(
+                (v: {
+                    word: string,
+                    x: number,
+                    y: number
+                }, i: number) => {
+                    return (<span
+                        style={{
+                            left: `${Math.floor(v.x * (1000 - 18 * v.word.length))}px`,
+                            top: `${Math.floor(v.y * (600 - 30))}px`,
+                        }}
+                        className={`select-none cursor-pointer absolute font-mono text-[30px] border-amber-100 border-1`}
+                        key={i}
+                        onClick={inspect(v.word)}>{v.word}</span>)
+                })}
+        </div>
+    )
+}

src/app/word-board/layout.tsx

@@ -0,0 +1,34 @@
+import type { Metadata } from "next";
+import { Geist, Geist_Mono } from "next/font/google";
+import "../globals.css";
+
+const geistSans = Geist({
+  variable: "--font-geist-sans",
+  subsets: ["latin"],
+});
+
+const geistMono = Geist_Mono({
+  variable: "--font-geist-mono",
+  subsets: ["latin"],
+});
+
+export const metadata: Metadata = {
+  title: "Word Board",
+  description: "Word board page",
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <html lang="en">
+      <body
+        className={`${geistSans.variable} ${geistMono.variable} antialiased`}
+      >
+        {children}
+      </body>
+    </html>
+  );
+}

src/app/word-board/page.tsx

@@ -0,0 +1,94 @@
+'use client';
+import WordBoard from "@/app/word-board/WordBoard";
+import Button from "./Button";
+import { useRef, useState } from "react";
+
+interface Word {
+  word: string,
+  x: number,
+  y: number
+}
+
+export default function Home() {
+  const inputRef = useRef<HTMLInputElement>(null);
+  const inputFileRef = useRef<HTMLInputElement>(null);
+  const initialWords =
+    [
+      // 'apple',
+      // 'banana',
+      // 'cannon',
+      // 'desktop',
+      // 'kernel',
+      // 'system',
+      // 'programming',
+      // 'owe'
+    ] as Array<string>;
+  const [words, setWords] = useState(
+    initialWords.map((v: string) => ({
+      'word': v,
+      'x': Math.random(),
+      'y': Math.random()
+    }))
+  );
+  const generateNewWord = (word: string) => {
+    return {
+      word: word,
+      x: Math.random(),
+      y: Math.random()
+    } as Word;
+  }
+  const insertWord = () => {
+    if (!inputRef.current) return;
+    const word = inputRef.current.value.trim();
+    if (word === '') return;
+    setWords([...words, generateNewWord(word)]);
+    inputRef.current.value = '';
+  }
+  const deleteWord = () => {
+    if (!inputRef.current) return;
+    const word = inputRef.current.value.trim();
+    if (word === '') return;
+    setWords(words.filter((v) => v.word !== word));
+    inputRef.current.value = '';
+  };
+  const importWords = () => {
+    inputFileRef.current?.click();
+  }
+  const exportWords = () => {
+    const blob = new Blob([JSON.stringify(words)], {
+      type: 'application/json'
+    });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = `${Date.now()}.json`;
+    a.style.display = 'none';
+    a.click();
+    URL.revokeObjectURL(url);
+  }
+  const handleFileChange = () => {
+    const files = inputFileRef.current?.files;
+    if (files && files.length > 0) {
+      const reader = new FileReader();
+      reader.onload = () => {
+        if (reader.result && typeof reader.result === 'string')
+          setWords(JSON.parse(reader.result) as [Word]);
+      }
+      reader.readAsText(files[0]);
+    }
+  }
+  return (
+    <div className="p-5 my-10 mx-auto bg-gray-200 rounded shadow-2xl w-[1050px]">
+      <WordBoard words={words as [Word]} />
+      <div className="flex justify-center rounded mt-3 w-[1000px]">
+        <input ref={inputRef} placeholder="在此插入/删除单词" type="text" className="focus:outline-none border-b-2 border-black" />
+        <Button label="插入" onClick={insertWord}></Button>
+        <Button label="删除" onClick={deleteWord}></Button>
+        <Button label="导入" onClick={importWords}></Button>
+        <Button label="导出" onClick={exportWords}></Button>
+        <Button label="删光" onClick={()=>{setWords([] as Array<Word>)}}></Button>
+      </div>
+      <input type="file" ref={inputFileRef} className="hidden" accept="application/json" onChange={handleFileChange}></input>
+    </div>
+  );
+}