initial implementation

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# Project
## User Language
Simplified Chinese
## Project Status
Completed
# Cline's Memory Bank
I am Cline, an expert software engineer with a unique characteristic: my memory resets completely between sessions. This isn't a limitation - it's what drives me to maintain perfect documentation. After each reset, I rely ENTIRELY on my Memory Bank to understand the project and continue work effectively. I MUST read ALL memory bank files at the start of EVERY task - this is not optional.
## Memory Bank Structure
The Memory Bank consists of core files and optional context files, all in Markdown format. Files build upon each other in a clear hierarchy:
flowchart TD
PB[projectbrief.md] --> PC[productContext.md]
PB --> SP[systemPatterns.md]
PB --> TC[techContext.md]
PC --> AC[activeContext.md]
SP --> AC
TC --> AC
AC --> P[progress.md]
### Core Files (Required)
1. `projectbrief.md`
- Foundation document that shapes all other files
- Created at project start if it doesn't exist
- Defines core requirements and goals
- Source of truth for project scope
2. `productContext.md`
- Why this project exists
- Problems it solves
- How it should work
- User experience goals
3. `activeContext.md`
- Current work focus
- Recent changes
- Next steps
- Active decisions and considerations
- Important patterns and preferences
- Learnings and project insights
4. `systemPatterns.md`
- System architecture
- Key technical decisions
- Design patterns in use
- Component relationships
- Critical implementation paths
5. `techContext.md`
- Technologies used
- Development setup
- Technical constraints
- Dependencies
- Tool usage patterns
6. `progress.md`
- What works
- What's left to build
- Current status
- Known issues
- Evolution of project decisions
### Additional Context
Create additional files/folders within memory-bank/ when they help organize:
- Complex feature documentation
- Integration specifications
- API documentation
- Testing strategies
- Deployment procedures
## Core Workflows
### Plan Mode
flowchart TD
Start[Start] --> ReadFiles[Read Memory Bank]
ReadFiles --> CheckFiles{Files Complete?}
CheckFiles -->|No| Plan[Create Plan]
Plan --> Document[Document in Chat]
CheckFiles -->|Yes| Verify[Verify Context]
Verify --> Strategy[Develop Strategy]
Strategy --> Present[Present Approach]
### Act Mode
flowchart TD
Start[Start] --> Context[Check Memory Bank]
Context --> Update[Update Documentation]
Update --> Execute[Execute Task]
Execute --> Document[Document Changes]
## Documentation Updates
Memory Bank updates occur when:
1. Discovering new project patterns
2. After implementing significant changes
3. When user requests with **update memory bank** (MUST review ALL files)
4. When context needs clarification
flowchart TD
Start[Update Process]
subgraph Process
P1[Review ALL Files]
P2[Document Current State]
P3[Clarify Next Steps]
P4[Document Insights & Patterns]
P1 --> P2 --> P3 --> P4
end
Start --> Process
Note: When triggered by **update memory bank**, I MUST review every memory bank file, even if some don't require updates. Focus particularly on activeContext.md and progress.md as they track current state.
REMEMBER: After every memory reset, I begin completely fresh. The Memory Bank is my only link to previous work. It must be maintained with precision and clarity, as my effectiveness depends entirely on its accuracy.

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# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
pnpm-debug.log*
lerna-debug.log*
node_modules
dist
dist-ssr
*.local
# Editor directories and files
.vscode/*
!.vscode/extensions.json
.idea
.DS_Store
*.suo
*.ntvs*
*.njsproj
*.sln
*.sw?

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# 条码扫描器 PWA (人机协作项目)
这是一个作者为了练习与 AI 协作,而使用 AI 编写的渐进式 Web 应用 (PWA)。
在本项目中,作者负责提出需求、进行决策和提供指导,而 AI 助手 **Cline** 则根据指令完成具体的编码和文档撰写工作。这个项目旨在探索一种高效的人机协作模式。
## 项目简介
本项目是一个功能完整的条码扫描应用,旨在提供快速、便捷的条码扫描和管理体验,无需安装原生应用。它包含两个核心功能模块:
1. **实时扫描**: 通过设备摄像头实时捕捉和解析条码。
2. **历史记录**: 保存、查看、管理和导出扫描过的条码。
## 功能特性
- **实时扫描**:
- 动态申请摄像头权限并渲染视频流。
- 支持从多个摄像头中选择。
- 使用 Quagga2 实时检测视频流中的条码。
- 在画面上高亮显示识别到的条码。
- 一键保存扫描结果到本地。
- **历史记录管理**:
- 使用 IndexedDB 在浏览器端持久化存储数据。
- 为每条记录添加自定义标签。
- 支持按标签筛选记录。
- 支持批量选择、删除和导出 (CSV 格式) 记录。
- **简洁的 UI**:
- 双标签页设计,通过底部导航栏轻松切换。
- 响应式布局,在桌面和移动设备上均有良好体验。
## 技术栈
- **框架**: React
- **构建工具**: Vite
- **样式**: TailwindCSS
- **路由**: `react-router-dom`
- **条码扫描**: `Quagga2`
- **客户端数据库**: `IndexedDB` (通过 `idb` 库简化操作)
- **包管理器**: pnpm
## 项目状态
**已完成**
所有在项目初期定义的核心功能和高级功能均已实现。应用目前处于稳定状态,没有已知问题。

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import js from '@eslint/js'
import globals from 'globals'
import reactHooks from 'eslint-plugin-react-hooks'
import reactRefresh from 'eslint-plugin-react-refresh'
export default [
{ ignores: ['dist'] },
{
files: ['**/*.{js,jsx}'],
languageOptions: {
ecmaVersion: 2020,
globals: globals.browser,
parserOptions: {
ecmaVersion: 'latest',
ecmaFeatures: { jsx: true },
sourceType: 'module',
},
},
plugins: {
'react-hooks': reactHooks,
'react-refresh': reactRefresh,
},
rules: {
...js.configs.recommended.rules,
...reactHooks.configs.recommended.rules,
'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
'react-refresh/only-export-components': [
'warn',
{ allowConstantExport: true },
],
},
},
]

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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no" />
<title>Barcode Scanner</title>
</head>
<body>
<div id="root"></div>
<script type="module" src="/src/main.jsx"></script>
</body>
</html>

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# 当前背景
## 当前工作重点
在核心功能完成后,本次工作重点是根据用户反馈优化 `LiveScannerPage` 的用户体验和稳定性。
## 已完成的步骤
1. **项目初始化:**
- 已使用 pnpm 和 Vite 完成项目设置。
- 所有核心依赖项均已安装和配置。
2. **页面结构与 UI 框架:**
- `LiveScannerPage``HistoryPage` 已创建。
- `BottomNav` 组件已实现,并能正常导航。
- `react-router-dom` 已配置为嵌套路由。
3. **实时扫描功能 (核心):**
- 已实现摄像头权限申请和视频流渲染。
- 已集成 Quagga2 进行条码检测和视觉反馈。
- 已实现保存最新扫描结果到数据库的功能。
4. **实时扫描功能 (优化):**
- **摄像头选择:** 添加了摄像头下拉列表,启动时不再自动扫描。
- **视频流修复:** 解决了视频流渲染黑屏的问题。
- **UI 简化:** 选择摄像头后,下拉菜单变为固定的文本标签,简化了交互。
- **结果管理:** 添加了“清空”按钮,用于清除缓存的扫描结果。
5. **历史记录功能:**
- 已使用 `idb` 设置 IndexedDB。
- 已实现记录的添加、查询和删除功能,并在页面上展示。
## 后续步骤
- **所有核心和高级功能均已完成。**
## 当前的决策和考虑
- **稳定性优先:** 为了解决设备兼容性问题,主动简化了摄像头切换逻辑,采用刷新页面重新选择的策略,以确保应用的稳定性。
- **代码结构:** 当前的代码结构(`pages`, `components`, `db`)运行良好。
- **功能完整性:** 项目已满足 `projectbrief.md` 中定义的所有核心和高级需求。

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# 产品背景
## 问题陈述
需要一种快速、基于网络的方式来扫描和管理条形码,而无需安装原生应用程序。这对于库存管理、个人物品追踪、价格查询或任何需要快速识别和记录产品信息的场景非常有用。
## 用户体验目标
- **简洁性与直观性:** 界面应分为两个明确的标签页:“实时扫描”和“历史记录”。用户可以轻松理解每个页面的功能。
- **易用性:**
- 用户应能通过底部的导航按钮轻松切换页面。
- 在扫描页面,摄像头应自动启动,并提供清晰的扫描区域指示。
- 保存条形码应像点击屏幕上的识别框一样简单。
- **响应性:** 应用应在各种设备和屏幕尺寸上良好运行,特别是在移动设备上。
- **即时反馈:**
- 成功识别条形码后,应立即在视频流上用方框标出。
- 点击保存后,应有明确的提示告知用户操作成功。
- **高效管理:**
- 在历史记录页面,用户可以轻松查看所有保存的条形码。
- 提供为记录添加标签、按标签筛选、批量删除和导出的功能,以方便管理。

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# 进展
## 已完成的工作
- **Memory Bank 初始化:** 所有核心 Memory Bank 文件都已创建。
- **项目规划:**
- 与用户详细讨论并确定了项目需求。
- 确定了双标签页(实时/历史)的架构。
- 确定了使用 IndexedDB 进行数据持久化。
- 确定了使用 `idb``react-router-dom` 作为核心依赖。
- **项目设置:**
- 使用 pnpm 和 Vite 初始化项目。
- 安装所有必需的依赖项。
- 配置 TailwindCSS。
- **页面结构与 UI 框架:**
- 创建 `src/pages` 目录及 `LiveScannerPage``HistoryPage` 页面组件。
- 创建 `src/components/BottomNav.jsx` 组件。
-`App.jsx` 中配置 `react-router-dom`,实现根路径 `/` (实时扫描) 和 `/history` (历史记录) 的路由。
- 实现 `BottomNav` 组件,使其能够在这两个页面之间导航。
- **实时扫描功能:**
- **摄像头权限与渲染:** 申请摄像头访问权限并将实时视频流绘制到 `<video>` 元素上。
- **条码检测与反馈:** 将视频流提供给 Quagga2 进行处理,并将检测结果输出到浏览器控制台,同时在 `<canvas>` 上为检测到的条形码绘制边框。
- **交互实现:** 实现了一个保存按钮,用于将最新检测到的条形码存入数据库。
- **实时扫描功能 (优化):**
- **摄像头选择:** 添加了下拉菜单,允许用户选择摄像头,避免了自动启动。
- **视频流修复:** 解决了视频渲染黑屏的问题,确保摄像头画面正常显示。
- **交互简化:** 锁定已选摄像头,避免了因设备切换导致的稳定性问题。
- **结果管理:** 添加了“清空”按钮,用于清除页面上的扫描结果列表。
- **历史记录功能:**
- **数据库设置:** 使用 `idb` 库设置 IndexedDB 数据库和对象存储。
- **数据操作:** 实现了基本的增、删、查功能,并在历史记录页面展示。
- **功能集成:**
- 将扫描功能与 IndexedDB 的保存功能成功连接。
- **历史记录高级功能:**
- **标签管理:** 实现了为记录添加和更新标签的功能。
- **标签筛选:** 实现了按标签筛选历史记录的功能。
- **批量操作:** 实现了批量选择、删除和导出 (CSV) 记录的功能。
## 待办事项
- **所有功能已完成。**
## 已知问题
- 目前没有已知问题。

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# 项目简介
本项目旨在创建一个用于条形码扫描的单页应用SPA
## 核心需求
- **双标签页界面:**
- **实时扫描页:** 通过设备摄像头进行实时视频流扫描。
- **历史记录页:** 展示和管理已扫描的条形码记录。
- 通过底部导航按钮在两个页面间切换。
- **实时扫描功能:**
- 将摄像头视频流渲染到 `<canvas>` 元素上。
- 使用 Quagga2 解析视频流中的条形码。
-`<canvas>` 上绘制方框,标示识别到的条形码位置。
- 点击方框可将条形码的值存入历史记录。
- **历史记录功能:**
- 使用 `IndexedDB` 在客户端持久化存储扫描记录。
- 每条记录可以添加自定义标签tag
- 支持按标签筛选历史记录。
- 支持批量导出和删除历史记录。
- **技术栈:**
- **包管理器:** pnpm
- **框架:** React
- **样式:** TailwindCSS
- **条码扫描:** Quagga2
- **数据库:** IndexedDB
- **平台:** 基于 Web 的 SPA。

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# 系统模式
## 架构
- **前端架构:** 单页应用SPA使用 React 构建,具有两个主要视图(页面)。
- **视图管理:**
- **`LiveScannerView`:** 实时扫描页面,负责摄像头访问和条形码检测。
- **`HistoryView`:** 历史记录页面,负责展示和管理已保存的数据。
- 使用 React 的条件渲染或一个轻量级的路由库来管理这两个视图之间的切换。
- **数据持久化:**
- **`IndexedDB`:** 用于在客户端存储用户的扫描历史、标签等信息。将创建一个 `DBHelper` 或类似的服务来封装数据库操作(增、删、改、查)。
## 组件模型
应用将由以下核心组件构成:
- **`App`:** 主组件,管理整体布局、当前激活的视图和底部导航栏的状态。
- **`BottomNav`:** 底部导航组件,用于在 `LiveScannerView``HistoryView` 之间切换。
- **`Scanner`:** 封装 Quagga2 逻辑,处理摄像头视频流,并在 `canvas` 上绘制结果。
- **`HistoryList`:** 显示保存在 IndexedDB 中的条形码列表。
- **`TagManager`:** 用于添加、删除和筛选标签的组件。
## 关键技术决策
- **状态管理:**
- **全局状态:** 对于当前激活的视图(实时/历史),将使用 React Context 或一个简单的状态管理库来管理。
- **本地状态:** 组件内部状态(如表单输入)将使用 `useState``useEffect`
- **样式:** TailwindCSS 将用于快速、实用的样式设计,确保响应式布局。
- **条码扫描:** Quagga2 因其在网络环境中的灵活性和易于集成而被选中。
- **数据库交互:** 所有 IndexedDB 操作将被抽象到一个单独的模块中,以保持业务逻辑的清晰和可维护性。

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# 技术背景
## 技术栈
- **pnpm:** 用于高效的依赖管理。
- **React:** 用于构建用户界面的核心库。
- **TailwindCSS:** 用于样式设计的 CSS 框架。
- **Quagga2:** 用于从视频流中解码条形码的库。
- **idb:** 一个轻量级的包装库,用于简化 IndexedDB 操作。
- **react-router-dom:** 用于在应用内进行路由和视图管理。
## 开发环境
- **构建工具:** Vite 将被用作构建工具,因为它提供了快速的开发服务器和优化的构建过程。
- **节点版本:** 建议使用最新的 LTS 版本的 Node.js。
- **包管理:** pnpm 将用于安装和管理项目依赖。
## 依赖
- `react`
- `react-dom`
- `@vitejs/plugin-react`
- `vite`
- `tailwindcss`
- `postcss`
- `autoprefixer`
- `@ericblade/quagga2`
- `idb`
- `react-router-dom`

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{
"name": "demo-barcode-scanner",
"private": true,
"version": "0.0.0",
"type": "module",
"scripts": {
"dev": "vite",
"build": "vite build",
"lint": "eslint .",
"preview": "vite preview"
},
"dependencies": {
"@tailwindcss/postcss": "^4.1.8",
"autoprefixer": "^10.4.21",
"idb": "^8.0.3",
"postcss": "^8.5.4",
"@ericblade/quagga2": "^1.8.4",
"react": "^19.1.0",
"react-dom": "^19.1.0",
"react-router-dom": "^7.6.2",
"tailwindcss": "^4.1.8"
},
"devDependencies": {
"@eslint/js": "^9.25.0",
"@types/react": "^19.1.2",
"@types/react-dom": "^19.1.2",
"@vitejs/plugin-react": "^4.4.1",
"eslint": "^9.25.0",
"eslint-plugin-react-hooks": "^5.2.0",
"eslint-plugin-react-refresh": "^0.4.19",
"globals": "^16.0.0",
"vite": "^6.3.5"
}
}

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export default {
plugins: {
"@tailwindcss/postcss": {},
autoprefixer: {},
},
}

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After

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.logo {
height: 6em;
padding: 1.5em;
will-change: filter;
transition: filter 300ms;
}
.logo:hover {
filter: drop-shadow(0 0 2em #646cffaa);
}
.logo.react:hover {
filter: drop-shadow(0 0 2em #61dafbaa);
}
@keyframes logo-spin {
from {
transform: rotate(0deg);
}
to {
transform: rotate(360deg);
}
}
@media (prefers-reduced-motion: no-preference) {
a:nth-of-type(2) .logo {
animation: logo-spin infinite 20s linear;
}
}
.card {
padding: 2em;
}
.read-the-docs {
}

15
src/App.jsx Normal file
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import { Outlet } from 'react-router-dom';
import BottomNav from './components/BottomNav';
function App() {
return (
<div className="flex flex-col h-screen">
<main className="flex-grow overflow-y-auto">
<Outlet />
</main>
<BottomNav />
</div>
);
}
export default App;

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<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>

After

Width:  |  Height:  |  Size: 4.0 KiB

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import { Link, useLocation } from 'react-router-dom';
const BottomNav = () => {
const location = useLocation();
const navItems = [
{ path: '/', label: '实时扫描' },
{ path: '/history', label: '历史记录' },
];
return (
<nav className="fixed bottom-0 left-0 right-0 bg-white dark:bg-gray-800 text-gray-900 dark:text-white shadow-lg">
<div className="flex justify-around max-w-md mx-auto">
{navItems.map((item) => (
<Link
key={item.path}
to={item.path}
className={`flex-1 text-center py-3 text-sm ${
location.pathname === item.path
? 'bg-gray-200 dark:bg-gray-700 text-gray-900 dark:text-white'
: 'text-gray-500 dark:text-gray-400 hover:bg-gray-200 dark:hover:bg-gray-700'
}`}
>
{item.label}
</Link>
))}
</div>
</nav>
);
};
export default BottomNav;

59
src/db/index.js Normal file
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import { openDB } from 'idb';
const DB_NAME = 'BarcodeDB';
const STORE_NAME = 'barcodes';
const DB_VERSION = 2;
async function getDB() {
return openDB(DB_NAME, DB_VERSION, {
upgrade(db, oldVersion, newVersion, tx) {
if (!db.objectStoreNames.contains(STORE_NAME)) {
const store = db.createObjectStore(STORE_NAME, {
keyPath: 'id',
autoIncrement: true,
});
store.createIndex('code', 'code', { unique: false });
store.createIndex('createdAt', 'createdAt', { unique: false });
}
if (oldVersion < 2) {
const store = tx.objectStore(STORE_NAME);
if (!store.indexNames.contains('tags')) {
store.createIndex('tags', 'tags', { multiEntry: true });
}
}
},
});
}
export async function addBarcode(code) {
const db = await getDB();
const tx = db.transaction(STORE_NAME, 'readwrite');
const store = tx.objectStore(STORE_NAME);
await store.add({ code, createdAt: new Date(), tags: [] });
await tx.done;
}
export async function getAllBarcodes() {
const db = await getDB();
return db.getAll(STORE_NAME);
}
export async function deleteBarcode(id) {
const db = await getDB();
const tx = db.transaction(STORE_NAME, 'readwrite');
await tx.objectStore(STORE_NAME).delete(id);
await tx.done;
}
export async function updateBarcodeTags(id, tags) {
const db = await getDB();
const tx = db.transaction(STORE_NAME, 'readwrite');
const store = tx.objectStore(STORE_NAME);
const record = await store.get(id);
if (record) {
record.tags = tags;
await store.put(record);
}
await tx.done;
}

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src/index.css Normal file
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@import "tailwindcss";
@layer base {
body {
@apply bg-white text-gray-800;
@apply dark:bg-gray-900 dark:text-gray-200;
}
}

30
src/main.jsx Normal file
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import { StrictMode } from 'react';
import { createRoot } from 'react-dom/client';
import { createBrowserRouter, RouterProvider } from 'react-router-dom';
import App from './App.jsx';
import './index.css';
import HistoryPage from './pages/HistoryPage.jsx';
import LiveScannerPage from './pages/LiveScannerPage.jsx';
const router = createBrowserRouter([
{
path: '/',
element: <App />,
children: [
{
index: true,
element: <LiveScannerPage />,
},
{
path: 'history',
element: <HistoryPage />,
},
],
},
]);
createRoot(document.getElementById('root')).render(
<StrictMode>
<RouterProvider router={router} />
</StrictMode>,
);

207
src/pages/HistoryPage.jsx Normal file
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import { useEffect, useState } from 'react';
import { deleteBarcode, getAllBarcodes, updateBarcodeTags } from '../db';
function HistoryPage() {
const [barcodes, setBarcodes] = useState([]);
const [loading, setLoading] = useState(true);
const [tagInputs, setTagInputs] = useState({});
const [allTags, setAllTags] = useState([]);
const [selectedTag, setSelectedTag] = useState('');
const [selectedIds, setSelectedIds] = useState(new Set());
const fetchBarcodes = async () => {
try {
const allBarcodes = await getAllBarcodes();
const sortedBarcodes = allBarcodes.sort((a, b) => b.createdAt - a.createdAt);
setBarcodes(sortedBarcodes);
const uniqueTags = [...new Set(allBarcodes.flatMap(b => b.tags || []))];
setAllTags(uniqueTags);
const initialTags = {};
sortedBarcodes.forEach(b => {
initialTags[b.id] = (b.tags || []).join(', ');
});
setTagInputs(initialTags);
} catch (error) {
console.error('Failed to fetch barcodes:', error);
} finally {
setLoading(false);
}
};
useEffect(() => {
fetchBarcodes();
}, []);
const handleDelete = async (id) => {
try {
await deleteBarcode(id);
fetchBarcodes(); // Refresh list
} catch (error) {
console.error('Failed to delete barcode:', error);
}
};
const handleTagsChange = (id, value) => {
setTagInputs(prev => ({ ...prev, [id]: value }));
};
const handleUpdateTags = async (id) => {
const tags = tagInputs[id].split(',').map(t => t.trim()).filter(Boolean);
try {
await updateBarcodeTags(id, tags);
await fetchBarcodes();
} catch (error) {
console.error('Failed to update tags:', error);
}
};
const handleSelect = (id) => {
setSelectedIds(prev => {
const newSet = new Set(prev);
if (newSet.has(id)) {
newSet.delete(id);
} else {
newSet.add(id);
}
return newSet;
});
};
const handleBulkDelete = async () => {
try {
for (const id of selectedIds) {
await deleteBarcode(id);
}
setSelectedIds(new Set());
await fetchBarcodes();
} catch (error) {
console.error('Failed to bulk delete barcodes:', error);
}
};
const handleBulkExport = () => {
const dataToExport = barcodes.filter(b => selectedIds.has(b.id));
if (dataToExport.length === 0) return;
const csvContent = "data:text/csv;charset=utf-8,"
+ "Code,Tags,ScannedAt\n"
+ dataToExport.map(b =>
`"${b.code}","${(b.tags || []).join(',')}","${new Date(b.createdAt).toISOString()}"`
).join("\n");
const encodedUri = encodeURI(csvContent);
const link = document.createElement("a");
link.setAttribute("href", encodedUri);
link.setAttribute("download", "barcodes.csv");
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
};
if (loading) {
return <div className="text-center mt-8">正在加载...</div>;
}
const filteredBarcodes = selectedTag
? barcodes.filter(b => (b.tags || []).includes(selectedTag))
: barcodes;
return (
<div className="px-4 pt-4 pb-20">
<h1 className="text-2xl font-bold mb-4">历史记录</h1>
<div className="mb-4 space-y-4">
<div>
<label htmlFor="tag-filter" className="block text-sm font-medium text-gray-700 dark:text-gray-300">按标签筛选:</label>
<select
id="tag-filter"
value={selectedTag}
onChange={(e) => setSelectedTag(e.target.value)}
className="mt-1 block w-full pl-3 pr-10 py-2 text-base border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 text-gray-900 dark:text-white focus:outline-none focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm rounded-md"
>
<option value="">所有</option>
{allTags.map(tag => (
<option key={tag} value={tag}>{tag}</option>
))}
</select>
</div>
{selectedIds.size > 0 && (
<div className="flex space-x-2">
<button onClick={handleBulkDelete} className="bg-red-600 hover:bg-red-700 text-white font-bold py-2 px-4 rounded">
删除选中 ({selectedIds.size})
</button>
<button onClick={handleBulkExport} className="bg-green-600 hover:bg-green-700 text-white font-bold py-2 px-4 rounded">
导出选中 ({selectedIds.size})
</button>
</div>
)}
</div>
{filteredBarcodes.length === 0 ? (
<p>没有符合条件的记录</p>
) : (
<ul className="space-y-3">
{filteredBarcodes.map((barcode) => (
<li
key={barcode.id}
className={`bg-white dark:bg-gray-800 shadow-md rounded-lg p-4 ${selectedIds.has(barcode.id) ? 'ring-2 ring-blue-500' : ''}`}
>
<div className="flex justify-between items-start">
<div className="flex items-start space-x-3">
<input
type="checkbox"
checked={selectedIds.has(barcode.id)}
onChange={() => handleSelect(barcode.id)}
className="mt-1 h-5 w-5 text-blue-600 border-gray-300 dark:border-gray-600 rounded bg-gray-100 dark:bg-gray-700"
/>
<div>
<p className="font-mono text-lg text-gray-800 dark:text-gray-200">{barcode.code}</p>
<p className="text-sm text-gray-500 dark:text-gray-400">
{new Date(barcode.createdAt).toLocaleString()}
</p>
</div>
</div>
<button
onClick={() => handleDelete(barcode.id)}
className="bg-red-500 hover:bg-red-600 text-white font-bold py-1 px-3 rounded flex-shrink-0"
>
删除
</button>
</div>
<div className="mt-3">
<div className="flex items-center space-x-2">
<input
type="text"
value={tagInputs[barcode.id] || ''}
onChange={(e) => handleTagsChange(barcode.id, e.target.value)}
placeholder="添加标签 (用逗号分隔)"
className="border rounded px-2 py-1 w-full text-sm bg-gray-50 dark:bg-gray-700 border-gray-300 dark:border-gray-600 text-gray-900 dark:text-white"
/>
<button
onClick={() => handleUpdateTags(barcode.id)}
className="bg-blue-500 hover:bg-blue-600 text-white font-bold py-1 px-3 rounded text-sm"
>
更新
</button>
</div>
{barcode.tags && barcode.tags.length > 0 && (
<div className="mt-2 flex flex-wrap gap-1">
{barcode.tags.map(tag => (
<span key={tag} className="bg-gray-200 dark:bg-gray-600 text-gray-700 dark:text-gray-200 text-xs font-semibold px-2 py-1 rounded-full">
{tag}
</span>
))}
</div>
)}
</div>
</li>
))}
</ul>
)}
</div>
);
}
export default HistoryPage;

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import Quagga from '@ericblade/quagga2';
import { useEffect, useRef, useState } from 'react';
import { addBarcode } from '../db';
function LiveScannerPage() {
const videoRef = useRef(null);
const [error, setError] = useState(null);
const scannerRef = useRef(false);
const [scannedResults, setScannedResults] = useState([]);
const [selectedResult, setSelectedResult] = useState(null);
const [showSuccess, setShowSuccess] = useState(false);
const [strictMode, setStrictMode] = useState(false);
const [selectedFormat, setSelectedFormat] = useState('all');
const [videoDevices, setVideoDevices] = useState([]);
const [selectedDeviceId, setSelectedDeviceId] = useState('');
const handleSave = async () => {
if (selectedResult) {
try {
await addBarcode(selectedResult.code);
setShowSuccess(true);
setScannedResults([]);
setSelectedResult(null);
setTimeout(() => setShowSuccess(false), 2000);
} catch (err) {
console.error("Failed to save barcode:", err);
setError("保存失败,请重试。");
}
}
};
useEffect(() => {
const getVideoDevices = async () => {
try {
const devices = await navigator.mediaDevices.enumerateDevices();
const videoInputs = devices.filter(
(device) => device.kind === 'videoinput'
);
setVideoDevices(videoInputs);
} catch (err) {
setError('无法获取摄像头列表。');
console.error('Could not get video devices:', err);
}
};
getVideoDevices();
}, []);
const streamRef = useRef(null);
useEffect(() => {
const stopScanner = () => {
if (scannerRef.current) {
Quagga.stop();
scannerRef.current = false;
}
if (streamRef.current) {
streamRef.current.getTracks().forEach(track => track.stop());
streamRef.current = null;
}
if (videoRef.current) {
videoRef.current.srcObject = null;
}
};
const startScanner = async () => {
stopScanner();
setScannedResults([]);
setSelectedResult(null);
setError(null);
try {
const stream = await navigator.mediaDevices.getUserMedia({
video: { deviceId: selectedDeviceId },
});
streamRef.current = stream;
if (videoRef.current) {
videoRef.current.srcObject = streamRef.current;
videoRef.current.play().catch(e => console.error("Video play failed:", e));
}
Quagga.init(
{
inputStream: {
name: 'Live',
type: 'LiveStream',
target: videoRef.current,
constraints: {
width: 640,
height: 480,
},
},
decoder: {
readers: ['code_128_reader', 'ean_reader', 'ean_8_reader', 'code_39_reader', 'code_39_vin_reader', 'codabar_reader', 'upc_reader', 'upc_e_reader', 'i2of5_reader'],
},
},
(err) => {
if (err) {
setError('QuaggaJS 初始化失败: ' + err.message);
console.error(err);
return;
}
Quagga.start();
scannerRef.current = true;
}
);
Quagga.onProcessed((result) => {
const drawingCtx = Quagga.canvas.ctx.overlay;
const drawingCanvas = Quagga.canvas.dom.overlay;
if (result) {
if (result.boxes) {
drawingCtx.clearRect(0, 0, parseInt(drawingCanvas.getAttribute("width")), parseInt(drawingCanvas.getAttribute("height")));
result.boxes.filter(function (box) {
return box !== result.box;
}).forEach(function (box) {
Quagga.ImageDebug.drawPath(box, { x: 0, y: 1 }, drawingCtx, { color: "green", lineWidth: 2 });
});
}
if (result.box) {
Quagga.ImageDebug.drawPath(result.box, { x: 0, y: 1 }, drawingCtx, { color: "#00F", lineWidth: 2 });
}
if (result.codeResult && result.codeResult.code) {
Quagga.ImageDebug.drawPath(result.line, { x: 'x', y: 'y' }, drawingCtx, { color: 'red', lineWidth: 3 });
}
}
});
Quagga.onDetected((data) => {
const result = data.codeResult;
if (!result || !result.code) {
return;
}
let maxError = 0;
if (result.decodedCodes) {
const errors = result.decodedCodes
.filter(d => typeof d.error !== 'undefined')
.map(d => d.error);
if (errors.length > 0) {
maxError = Math.max(...errors);
}
}
const newResult = {
code: result.code,
format: result.format,
error: maxError,
};
setScannedResults((prevResults) => {
const existingResultIndex = prevResults.findIndex(
(r) => r.code === newResult.code
);
if (existingResultIndex !== -1) {
// 如果已存在且新结果的错误率更低,则更新
if (newResult.error < prevResults[existingResultIndex].error) {
const updatedResults = [...prevResults];
updatedResults[existingResultIndex] = newResult;
return updatedResults;
}
// 否则,不更新
return prevResults;
} else {
// 如果不存在,则添加
return [...prevResults, newResult];
}
});
});
} catch (err) {
setError('无法访问摄像头: ' + err.message);
console.error('Error accessing camera:', err);
}
};
if (selectedDeviceId) {
startScanner();
} else {
stopScanner();
}
return () => {
stopScanner();
};
}, [selectedDeviceId]);
return (
<div className="relative w-full h-full">
{/* 视频和 Canvas 容器 */}
<div id="interactive" className="absolute top-0 left-0 w-full h-full">
<video
ref={videoRef}
autoPlay
playsInline
className="w-full h-full object-cover"
/>
<canvas className="drawingBuffer absolute top-0 left-0 w-full h-full"></canvas>
</div>
{/* 浮动 UI 元素 */}
<div className="absolute top-0 left-0 w-full h-full flex flex-col items-center justify-between p-4 text-gray-800 dark:text-white z-10 pointer-events-none">
{/* 顶部结果和操作 */}
<div className="w-full flex flex-col items-center pointer-events-auto">
<div className="w-full max-w-md bg-white/50 dark:bg-black/50 p-2 rounded-lg mb-4">
{!selectedDeviceId ? (
<>
<label htmlFor="camera-select" className="block mb-1 text-sm font-medium">
选择摄像头:
</label>
<select
id="camera-select"
value={selectedDeviceId}
onChange={(e) => setSelectedDeviceId(e.target.value)}
className="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white"
>
<option value="">-- 请选择 --</option>
{videoDevices.map((device, index) => (
<option key={device.deviceId} value={device.deviceId}>
{device.label || `摄像头 ${index + 1}`}
</option>
))}
</select>
</>
) : (
<div className="text-center p-2.5">
当前摄像头: {videoDevices.find(d => d.deviceId === selectedDeviceId)?.label || '已选择'}
</div>
)}
</div>
{selectedDeviceId && scannedResults.length > 0 && (() => {
const availableFormats = [...new Set(scannedResults.map(r => r.format))];
const filteredAndSortedResults = scannedResults
.filter(result => !strictMode || result.error < 0.2)
.filter(result => selectedFormat === 'all' || result.format === selectedFormat)
.sort((a, b) => a.error - b.error);
return (
<div className="w-full max-w-md bg-white/50 dark:bg-black/50 p-4 rounded-lg">
<div className="flex justify-between items-center mb-2">
<h2 className="text-lg font-bold">扫描结果:</h2>
<div className="flex items-center space-x-4">
<label className="flex items-center cursor-pointer">
<input
type="checkbox"
checked={strictMode}
onChange={() => setStrictMode(!strictMode)}
className="form-checkbox h-5 w-5 text-blue-600"
/>
<span className="ml-2 text-sm font-medium">严格模式</span>
</label>
<select
value={selectedFormat}
onChange={(e) => setSelectedFormat(e.target.value)}
className="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block p-1.5 dark:bg-gray-700 dark:border-gray-600 dark:text-white"
>
<option value="all">所有格式</option>
{availableFormats.map(format => (
<option key={format} value={format}>{format}</option>
))}
</select>
</div>
</div>
<div className="space-y-2 max-h-48 overflow-y-auto">
{filteredAndSortedResults.map((result) => (
<label key={result.code} className="flex items-start space-x-3 cursor-pointer p-2 rounded-md hover:bg-gray-200 dark:hover:bg-gray-700">
<input
type="radio"
name="scannedResult"
value={result.code}
checked={selectedResult?.code === result.code}
onChange={() => setSelectedResult(result)}
className="form-radio h-5 w-5 text-blue-600 mt-1"
/>
<div className="flex-1">
<span className="font-mono text-base block">{result.code}</span>
<div className="text-xs text-gray-600 dark:text-gray-400">
<span>格式: {result.format}</span>
<span className="ml-2">|</span>
<span className="ml-2">错误率: {(result.error * 100).toFixed(2)}%</span>
</div>
</div>
</label>
))}
</div>
<div className="mt-4 flex space-x-2">
<button
onClick={handleSave}
disabled={!selectedResult}
className="w-full bg-blue-500 hover:bg-blue-600 text-white font-bold py-2 px-4 rounded disabled:bg-gray-500"
>
保存选中结果
</button>
<button
onClick={() => {
setScannedResults([]);
setSelectedResult(null);
}}
className="w-full bg-gray-500 hover:bg-gray-600 text-white font-bold py-2 px-4 rounded"
>
清空
</button>
</div>
</div>
);
})()}
{showSuccess && (
<div className="mt-4 p-2 bg-green-500 text-white rounded-md">
保存成功!
</div>
)}
</div>
{/* 中间错误信息 */}
{error && (
<div className="text-red-700 bg-red-100 dark:bg-red-200 dark:text-red-800 p-4 rounded-md pointer-events-auto">{error}</div>
)}
</div>
</div>
);
}
export default LiveScannerPage;

12
tailwind.config.js Normal file
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@ -0,0 +1,12 @@
/** @type {import('tailwindcss').Config} */
export default {
darkMode: 'media',
content: [
"./index.html",
"./src/**/*.{js,ts,jsx,tsx}",
],
theme: {
extend: {},
},
plugins: [],
}

9
vite.config.js Normal file
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@ -0,0 +1,9 @@
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
// https://vite.dev/config/
export default defineConfig({
plugins: [
react(),
],
})