feat: 프로젝트 초기 설정 완료 - Vite + React + TypeScript, TailwindCSS + ShadCN UI, Zustand, 기본 타입 및 컴포넌트 구현

.cursor/mcp.json

@@ -0,0 +1,23 @@
+{
+    "mcpServers": {
+        "task-master-ai": {
+            "command": "npx",
+            "args": [
+                "-y",
+                "--package=task-master-ai",
+                "task-master-ai"
+            ],
+            "env": {
+                "ANTHROPIC_API_KEY": "ANTHROPIC_API_KEY_HERE",
+                "PERPLEXITY_API_KEY": "PERPLEXITY_API_KEY_HERE",
+                "OPENAI_API_KEY": "OPENAI_API_KEY_HERE",
+                "GOOGLE_API_KEY": "GOOGLE_API_KEY_HERE",
+                "XAI_API_KEY": "XAI_API_KEY_HERE",
+                "OPENROUTER_API_KEY": "OPENROUTER_API_KEY_HERE",
+                "MISTRAL_API_KEY": "MISTRAL_API_KEY_HERE",
+                "AZURE_OPENAI_API_KEY": "AZURE_OPENAI_API_KEY_HERE",
+                "OLLAMA_API_KEY": "OLLAMA_API_KEY_HERE"
+            }
+        }
+    }
+}

.cursor/rules/cursor_rules.mdc

@@ -0,0 +1,53 @@
+---
+description: Guidelines for creating and maintaining Cursor rules to ensure consistency and effectiveness.
+globs: .cursor/rules/*.mdc
+alwaysApply: true
+---
+
+- **Required Rule Structure:**
+  ```markdown
+  ---
+  description: Clear, one-line description of what the rule enforces
+  globs: path/to/files/*.ext, other/path/**/*
+  alwaysApply: boolean
+  ---
+
+  - **Main Points in Bold**
+    - Sub-points with details
+    - Examples and explanations
+  ```
+
+- **File References:**
+  - Use `[filename](mdc:path/to/file)` ([filename](mdc:filename)) to reference files
+  - Example: [prisma.mdc](mdc:.cursor/rules/prisma.mdc) for rule references
+  - Example: [schema.prisma](mdc:prisma/schema.prisma) for code references
+
+- **Code Examples:**
+  - Use language-specific code blocks
+  ```typescript
+  // ✅ DO: Show good examples
+  const goodExample = true;
+  
+  // ❌ DON'T: Show anti-patterns
+  const badExample = false;
+  ```
+
+- **Rule Content Guidelines:**
+  - Start with high-level overview
+  - Include specific, actionable requirements
+  - Show examples of correct implementation
+  - Reference existing code when possible
+  - Keep rules DRY by referencing other rules
+
+- **Rule Maintenance:**
+  - Update rules when new patterns emerge
+  - Add examples from actual codebase
+  - Remove outdated patterns
+  - Cross-reference related rules
+
+- **Best Practices:**
+  - Use bullet points for clarity
+  - Keep descriptions concise
+  - Include both DO and DON'T examples
+  - Reference actual code over theoretical examples
+  - Use consistent formatting across rules 

.cursor/rules/self_improve.mdc

@@ -0,0 +1,72 @@
+---
+description: Guidelines for continuously improving Cursor rules based on emerging code patterns and best practices.
+globs: **/*
+alwaysApply: true
+---
+
+- **Rule Improvement Triggers:**
+  - New code patterns not covered by existing rules
+  - Repeated similar implementations across files
+  - Common error patterns that could be prevented
+  - New libraries or tools being used consistently
+  - Emerging best practices in the codebase
+
+- **Analysis Process:**
+  - Compare new code with existing rules
+  - Identify patterns that should be standardized
+  - Look for references to external documentation
+  - Check for consistent error handling patterns
+  - Monitor test patterns and coverage
+
+- **Rule Updates:**
+  - **Add New Rules When:**
+    - A new technology/pattern is used in 3+ files
+    - Common bugs could be prevented by a rule
+    - Code reviews repeatedly mention the same feedback
+    - New security or performance patterns emerge
+
+  - **Modify Existing Rules When:**
+    - Better examples exist in the codebase
+    - Additional edge cases are discovered
+    - Related rules have been updated
+    - Implementation details have changed
+
+- **Example Pattern Recognition:**
+  ```typescript
+  // If you see repeated patterns like:
+  const data = await prisma.user.findMany({
+    select: { id: true, email: true },
+    where: { status: 'ACTIVE' }
+  });
+  
+  // Consider adding to [prisma.mdc](mdc:.cursor/rules/prisma.mdc):
+  // - Standard select fields
+  // - Common where conditions
+  // - Performance optimization patterns
+  ```
+
+- **Rule Quality Checks:**
+  - Rules should be actionable and specific
+  - Examples should come from actual code
+  - References should be up to date
+  - Patterns should be consistently enforced
+
+- **Continuous Improvement:**
+  - Monitor code review comments
+  - Track common development questions
+  - Update rules after major refactors
+  - Add links to relevant documentation
+  - Cross-reference related rules
+
+- **Rule Deprecation:**
+  - Mark outdated patterns as deprecated
+  - Remove rules that no longer apply
+  - Update references to deprecated rules
+  - Document migration paths for old patterns
+
+- **Documentation Updates:**
+  - Keep examples synchronized with code
+  - Update references to external docs
+  - Maintain links between related rules
+  - Document breaking changes
+Follow [cursor_rules.mdc](mdc:.cursor/rules/cursor_rules.mdc) for proper rule formatting and structure.

.cursor/rules/typescript.mdc

@@ -0,0 +1,92 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+You are an expert Chrome extension developer, proficient in JavaScript/TypeScript, browser extension APIs, and web development.
+
+Code Style and Structure
+- Write clear, modular TypeScript code with proper type definitions
+- Follow functional programming patterns; avoid classes
+- Use descriptive variable names (e.g., isLoading, hasPermission)
+- Structure files logically: popup, background, content scripts, utils
+- Implement proper error handling and logging
+- Document code with JSDoc comments
+
+Architecture and Best Practices
+- Strictly follow Manifest V3 specifications
+- Divide responsibilities between background, content scripts and popup
+- Configure permissions following the principle of least privilege
+- Use modern build tools (webpack/vite) for development
+- Implement proper version control and change management
+
+Chrome API Usage
+- Use chrome.* APIs correctly (storage, tabs, runtime, etc.)
+- Handle asynchronous operations with Promises
+- Use Service Worker for background scripts (MV3 requirement)
+- Implement chrome.alarms for scheduled tasks
+- Use chrome.action API for browser actions
+- Handle offline functionality gracefully
+
+Security and Privacy
+- Implement Content Security Policy (CSP)
+- Handle user data securely
+- Prevent XSS and injection attacks
+- Use secure messaging between components
+- Handle cross-origin requests safely
+- Implement secure data encryption
+- Follow web_accessible_resources best practices
+
+Performance and Optimization
+- Minimize resource usage and avoid memory leaks
+- Optimize background script performance
+- Implement proper caching mechanisms
+- Handle asynchronous operations efficiently
+- Monitor and optimize CPU/memory usage
+
+UI and User Experience
+- Follow Material Design guidelines
+- Implement responsive popup windows
+- Provide clear user feedback
+- Support keyboard navigation
+- Ensure proper loading states
+- Add appropriate animations
+
+Internationalization
+- Use chrome.i18n API for translations
+- Follow _locales structure
+- Support RTL languages
+- Handle regional formats
+
+Accessibility
+- Implement ARIA labels
+- Ensure sufficient color contrast
+- Support screen readers
+- Add keyboard shortcuts
+
+Testing and Debugging
+- Use Chrome DevTools effectively
+- Write unit and integration tests
+- Test cross-browser compatibility
+- Monitor performance metrics
+- Handle error scenarios
+
+Publishing and Maintenance
+- Prepare store listings and screenshots
+- Write clear privacy policies
+- Implement update mechanisms
+- Handle user feedback
+- Maintain documentation
+
+Follow Official Documentation
+- Refer to Chrome Extension documentation
+- Stay updated with Manifest V3 changes
+- Follow Chrome Web Store guidelines
+- Monitor Chrome platform updates
+
+Output Expectations
+- Provide clear, working code examples
+- Include necessary error handling
+- Follow security best practices
+- Ensure cross-browser compatibility
+- Write maintainable and scalable code

.gitignore

@@ -0,0 +1,120 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# Dependencies
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Build outputs
+build/
+dist/
+out/
+
+# Cache
+.cache/
+.parcel-cache/
+.next/
+.nuxt/
+.vuepress/dist
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Dependency directories
+jspm_packages/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+.env.production
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Storybook build outputs
+.out
+.storybook-out
+
+# Temporary folders
+tmp/
+temp/
+
+# Vite
+.vite/
+
+# MacOS
+.DS_Store
+
+# Windows
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# Vooster
+.vooster/
+
+# Test files
+test-results/
+playwright-report/
+playwright/.cache/

.prettierrc

@@ -0,0 +1 @@
+ 

README.md

@@ -0,0 +1,54 @@
+# React + TypeScript + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules:
+
+```js
+export default tseslint.config({
+  extends: [
+    // Remove ...tseslint.configs.recommended and replace with this
+    ...tseslint.configs.recommendedTypeChecked,
+    // Alternatively, use this for stricter rules
+    ...tseslint.configs.strictTypeChecked,
+    // Optionally, add this for stylistic rules
+    ...tseslint.configs.stylisticTypeChecked,
+  ],
+  languageOptions: {
+    // other options...
+    parserOptions: {
+      project: ['./tsconfig.node.json', './tsconfig.app.json'],
+      tsconfigRootDir: import.meta.dirname,
+    },
+  },
+})
+```
+
+You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
+
+```js
+// eslint.config.js
+import reactX from 'eslint-plugin-react-x'
+import reactDom from 'eslint-plugin-react-dom'
+
+export default tseslint.config({
+  plugins: {
+    // Add the react-x and react-dom plugins
+    'react-x': reactX,
+    'react-dom': reactDom,
+  },
+  rules: {
+    // other rules...
+    // Enable its recommended typescript rules
+    ...reactX.configs['recommended-typescript'].rules,
+    ...reactDom.configs.recommended.rules,
+  },
+})
+```

eslint.config.js

@@ -0,0 +1,28 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import tseslint from 'typescript-eslint'
+
+export default tseslint.config(
+  { ignores: ['dist'] },
+  {
+    extends: [js.configs.recommended, ...tseslint.configs.recommended],
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+    plugins: {
+      'react-hooks': reactHooks,
+      'react-refresh': reactRefresh,
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      'react-refresh/only-export-components': [
+        'warn',
+        { allowConstantExport: true },
+      ],
+    },
+  },
+)

index.html

@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Vite + React + TS</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>

package.json

@@ -0,0 +1,59 @@
+{
+  "name": "sheeteasy-ai",
+  "private": true,
+  "version": "0.1.0",
+  "description": "AI-powered Excel file processor with local processing",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
+    "format": "prettier --write \"src/**/*.{ts,tsx,js,jsx,json,css,md}\"",
+    "format:check": "prettier --check \"src/**/*.{ts,tsx,js,jsx,json,css,md}\"",
+    "preview": "vite preview",
+    "type-check": "tsc --noEmit"
+  },
+  "dependencies": {
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
+    "file-saver": "^2.0.5",
+    "lucide-react": "^0.468.0",
+    "luckyexcel": "^1.0.1",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "sheetjs-style": "^0.15.8",
+    "tailwind-merge": "^2.5.4",
+    "xlsx": "^0.18.5",
+    "zustand": "^5.0.2"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.15.0",
+    "@types/file-saver": "^2.0.7",
+    "@types/react": "^18.3.12",
+    "@types/react-dom": "^18.3.1",
+    "@typescript-eslint/eslint-plugin": "^8.15.0",
+    "@typescript-eslint/parser": "^8.15.0",
+    "@vitejs/plugin-react": "^4.3.4",
+    "autoprefixer": "^10.4.20",
+    "eslint": "^9.15.0",
+    "eslint-config-prettier": "^9.1.0",
+    "eslint-plugin-react-hooks": "^5.0.0",
+    "eslint-plugin-react-refresh": "^0.4.14",
+    "globals": "^15.12.0",
+    "postcss": "^8.5.1",
+    "prettier": "^3.4.2",
+    "tailwindcss": "^3.4.17",
+    "typescript": "~5.6.2",
+    "vite": "^6.0.1"
+  },
+  "keywords": [
+    "excel",
+    "ai",
+    "spreadsheet",
+    "local-processing",
+    "privacy"
+  ],
+  "author": "sheetEasy AI Team",
+  "license": "MIT"
+}

postcss.config.js

@@ -0,0 +1,6 @@
+export default {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+} 

public/vite.svg

@@ -0,0 +1 @@
+<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="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>

src/App.css

@@ -0,0 +1,42 @@
+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.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 {
+  color: #888;
+}

src/App.tsx

@@ -0,0 +1,143 @@
+import React from "react";
+import { useAppStore } from "./stores/useAppStore";
+import { Card, CardContent } from "./components/ui/card";
+import { Button } from "./components/ui/button";
+
+function App() {
+  const { isLoading, loadingMessage, currentFile, isAuthenticated } =
+    useAppStore();
+
+  return (
+    <div className="min-h-screen bg-background">
+      {/* 상단 바 */}
+      <header className="border-b bg-white/95 backdrop-blur supports-[backdrop-filter]:bg-white/60">
+        <div className="container flex h-16 items-center px-4">
+          <div className="flex items-center space-x-4">
+            <h1 className="text-2xl font-bold text-primary">sheetEasy AI</h1>
+          </div>
+
+          <div className="ml-auto flex items-center space-x-4">
+            {currentFile && (
+              <Button variant="outline" size="sm">
+                다운로드
+              </Button>
+            )}
+            <Button variant="ghost" size="sm">
+              히스토리
+            </Button>
+            <Button variant="ghost" size="icon">
+              <div className="h-8 w-8 rounded-full bg-primary/10 flex items-center justify-center">
+                <span className="text-sm font-medium">계정</span>
+              </div>
+            </Button>
+          </div>
+        </div>
+      </header>
+
+      {/* 메인 콘텐츠 */}
+      <main className="container mx-auto px-4 py-8">
+        {!currentFile ? (
+          /* 파일 업로드 영역 */
+          <div className="flex items-center justify-center min-h-[60vh]">
+            <Card className="w-full max-w-2xl">
+              <CardContent className="p-12">
+                <div className="text-center">
+                  <div className="mb-8">
+                    <div className="mx-auto h-24 w-24 rounded-full bg-primary/10 flex items-center justify-center mb-4">
+                      <svg
+                        className="h-12 w-12 text-primary"
+                        fill="none"
+                        stroke="currentColor"
+                        viewBox="0 0 24 24">
+                        <path
+                          strokeLinecap="round"
+                          strokeLinejoin="round"
+                          strokeWidth={2}
+                          d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"
+                        />
+                      </svg>
+                    </div>
+                    <h2 className="text-2xl font-semibold mb-2">
+                      Excel 파일을 업로드하세요
+                    </h2>
+                    <p className="text-muted-foreground mb-6">
+                      .xlsx, .xls 파일을 드래그 앤 드롭하거나 클릭하여 업로드
+                    </p>
+                  </div>
+
+                  <div className="border-2 border-dashed border-muted-foreground/25 rounded-lg p-12 hover:border-primary/50 transition-colors cursor-pointer">
+                    <p className="text-muted-foreground">
+                      파일을 여기에 드롭하거나 클릭하여 선택
+                    </p>
+                  </div>
+
+                  <div className="mt-6">
+                    <Button>파일 선택</Button>
+                  </div>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+        ) : (
+          /* 시트 뷰어 영역 */
+          <div className="space-y-6">
+            <div className="flex items-center justify-between">
+              <div>
+                <h2 className="text-xl font-semibold">{currentFile.name}</h2>
+                <p className="text-sm text-muted-foreground">
+                  업로드됨: {currentFile.uploadedAt.toLocaleDateString()}
+                </p>
+              </div>
+            </div>
+
+            {/* 시트 렌더링 영역 */}
+            <Card>
+              <CardContent className="p-0">
+                <div className="h-96 bg-white border rounded-lg flex items-center justify-center">
+                  <p className="text-muted-foreground">
+                    Luckysheet 시트가 여기에 렌더링됩니다
+                  </p>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+        )}
+      </main>
+
+      {/* 프롬프트 입력 (하단 고정) */}
+      {currentFile && (
+        <div className="fixed bottom-4 left-1/2 -translate-x-1/2 w-full max-w-2xl px-4">
+          <Card>
+            <CardContent className="p-4">
+              <div className="flex space-x-2">
+                <input
+                  type="text"
+                  placeholder="AI에게 명령을 입력하세요... (예: A열의 모든 빈 셀을 0으로 채워줘)"
+                  className="flex-1 px-3 py-2 border border-input rounded-md bg-background text-sm placeholder:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-ring"
+                />
+                <Button>실행</Button>
+                <Button variant="outline">히스토리</Button>
+              </div>
+            </CardContent>
+          </Card>
+        </div>
+      )}
+
+      {/* 로딩 오버레이 */}
+      {isLoading && (
+        <div className="fixed inset-0 bg-background/80 backdrop-blur-sm flex items-center justify-center z-50">
+          <Card>
+            <CardContent className="p-6">
+              <div className="flex items-center space-x-4">
+                <div className="animate-spin rounded-full h-6 w-6 border-2 border-primary border-t-transparent"></div>
+                <p className="text-sm">{loadingMessage || "처리 중..."}</p>
+              </div>
+            </CardContent>
+          </Card>
+        </div>
+      )}
+    </div>
+  );
+}
+
+export default App;

src/assets/react.svg

@@ -0,0 +1 @@
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src/components/ui/button.tsx

@@ -0,0 +1,53 @@
+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
+import { cn } from "../../lib/utils";
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50",
+  {
+    variants: {
+      variant: {
+        default: "bg-primary text-primary-foreground hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
+        outline:
+          "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
+        secondary:
+          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        ghost: "hover:bg-accent hover:text-accent-foreground",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-10 px-4 py-2",
+        sm: "h-9 rounded-md px-3",
+        lg: "h-11 rounded-md px-8",
+        icon: "h-10 w-10",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+);
+
+export interface ButtonProps
+  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
+    VariantProps<typeof buttonVariants> {
+  asChild?: boolean;
+}
+
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, asChild = false, ...props }, ref) => {
+    return (
+      <button
+        className={cn(buttonVariants({ variant, size, className }))}
+        ref={ref}
+        {...props}
+      />
+    );
+  }
+);
+Button.displayName = "Button";
+
+export { Button, buttonVariants };

src/components/ui/card.tsx

@@ -0,0 +1,85 @@
+import * as React from "react";
+import { cn } from "../../lib/utils";
+
+const Card = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn(
+      "rounded-lg border bg-card text-card-foreground shadow-sm",
+      className
+    )}
+    {...props}
+  />
+));
+Card.displayName = "Card";
+
+const CardHeader = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("flex flex-col space-y-1.5 p-6", className)}
+    {...props}
+  />
+));
+CardHeader.displayName = "CardHeader";
+
+const CardTitle = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLHeadingElement>
+>(({ className, ...props }, ref) => (
+  <h3
+    ref={ref}
+    className={cn(
+      "text-2xl font-semibold leading-none tracking-tight",
+      className
+    )}
+    {...props}
+  />
+));
+CardTitle.displayName = "CardTitle";
+
+const CardDescription = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLParagraphElement>
+>(({ className, ...props }, ref) => (
+  <p
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+));
+CardDescription.displayName = "CardDescription";
+
+const CardContent = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div ref={ref} className={cn("p-6 pt-0", className)} {...props} />
+));
+CardContent.displayName = "CardContent";
+
+const CardFooter = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("flex items-center p-6 pt-0", className)}
+    {...props}
+  />
+));
+CardFooter.displayName = "CardFooter";
+
+export {
+  Card,
+  CardHeader,
+  CardFooter,
+  CardTitle,
+  CardDescription,
+  CardContent,
+};

src/index.css

@@ -0,0 +1,48 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+/* 커스텀 스타일 */
+body {
+  font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+  color-scheme: light;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #ffffff;
+  
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+/* 스크롤바 스타일링 */
+::-webkit-scrollbar {
+  width: 6px;
+  height: 6px;
+}
+
+::-webkit-scrollbar-track {
+  background: #f1f1f1;
+}
+
+::-webkit-scrollbar-thumb {
+  background: #c1c1c1;
+  border-radius: 3px;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  background: #a1a1a1;
+}
+
+/* 로딩 애니메이션 */
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.animate-spin {
+  animation: spin 1s linear infinite;
+}

src/lib/utils.ts

@@ -0,0 +1,98 @@
+import { type ClassValue, clsx } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+/**
+ * Tailwind CSS 클래스를 병합하는 유틸리티 함수
+ */
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}
+
+/**
+ * 파일 크기를 사람이 읽기 쉬운 형태로 변환
+ */
+export function formatFileSize(bytes: number): string {
+  if (bytes === 0) return "0 Bytes";
+
+  const k = 1024;
+  const sizes = ["Bytes", "KB", "MB", "GB"];
+  const i = Math.floor(Math.log(bytes) / Math.log(k));
+
+  return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + " " + sizes[i];
+}
+
+/**
+ * 파일 확장자 검증
+ */
+export function validateFileType(fileName: string): boolean {
+  const allowedExtensions = [".xlsx", ".xls", ".csv"];
+  const extension = fileName.toLowerCase().substring(fileName.lastIndexOf("."));
+  return allowedExtensions.includes(extension);
+}
+
+/**
+ * 파일 크기 검증 (MB 단위)
+ */
+export function validateFileSize(fileSize: number, maxSizeMB: number): boolean {
+  const fileSizeMB = fileSize / (1024 * 1024);
+  return fileSizeMB <= maxSizeMB;
+}
+
+/**
+ * 날짜를 사람이 읽기 쉬운 형태로 변환
+ */
+export function formatDate(date: Date): string {
+  return new Intl.DateTimeFormat("ko-KR", {
+    year: "numeric",
+    month: "short",
+    day: "numeric",
+    hour: "2-digit",
+    minute: "2-digit",
+  }).format(date);
+}
+
+/**
+ * UUID 생성
+ */
+export function generateId(): string {
+  return Math.random().toString(36).substring(2) + Date.now().toString(36);
+}
+
+/**
+ * 딜레이 함수
+ */
+export function delay(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+/**
+ * 셀 범위를 문자열로 변환 (예: A1:B2)
+ */
+export function rangeToCellAddress(
+  startRow: number,
+  startCol: number,
+  endRow?: number,
+  endCol?: number
+): string {
+  const colToLetter = (col: number): string => {
+    let result = "";
+    while (col >= 0) {
+      result = String.fromCharCode((col % 26) + 65) + result;
+      col = Math.floor(col / 26) - 1;
+    }
+    return result;
+  };
+
+  const start = `${colToLetter(startCol)}${startRow + 1}`;
+
+  if (
+    endRow !== undefined &&
+    endCol !== undefined &&
+    (endRow !== startRow || endCol !== startCol)
+  ) {
+    const end = `${colToLetter(endCol)}${endRow + 1}`;
+    return `${start}:${end}`;
+  }
+
+  return start;
+}

src/main.tsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.tsx'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)

src/stores/useAppStore.ts

@@ -0,0 +1,123 @@
+import { create } from "zustand";
+import { devtools } from "zustand/middleware";
+import type {
+  SheetData,
+  FileUploadResult,
+  SelectedRange,
+} from "../types/sheet";
+import type { AIHistory } from "../types/ai";
+import type { User } from "../types/user";
+
+interface AppState {
+  // 사용자 상태
+  user: User | null;
+  isAuthenticated: boolean;
+
+  // 파일 및 시트 상태
+  currentFile: {
+    name: string;
+    size: number;
+    uploadedAt: Date;
+  } | null;
+  sheets: SheetData[];
+  activeSheetId: string | null;
+  selectedRange: SelectedRange | null;
+
+  // UI 상태
+  isLoading: boolean;
+  loadingMessage: string;
+  isHistoryPanelOpen: boolean;
+
+  // AI 상태
+  aiHistory: AIHistory[];
+  isProcessingAI: boolean;
+
+  // 액션들
+  setUser: (user: User | null) => void;
+  setAuthenticated: (authenticated: boolean) => void;
+
+  setCurrentFile: (
+    file: { name: string; size: number; uploadedAt: Date } | null
+  ) => void;
+  setSheets: (sheets: SheetData[]) => void;
+  setActiveSheetId: (sheetId: string | null) => void;
+  setSelectedRange: (range: SelectedRange | null) => void;
+
+  setLoading: (loading: boolean, message?: string) => void;
+  setHistoryPanelOpen: (open: boolean) => void;
+
+  addAIHistory: (history: AIHistory) => void;
+  setProcessingAI: (processing: boolean) => void;
+
+  // 복합 액션들
+  uploadFile: (result: FileUploadResult) => void;
+  resetApp: () => void;
+}
+
+const initialState = {
+  user: null,
+  isAuthenticated: false,
+  currentFile: null,
+  sheets: [],
+  activeSheetId: null,
+  selectedRange: null,
+  isLoading: false,
+  loadingMessage: "",
+  isHistoryPanelOpen: false,
+  aiHistory: [],
+  isProcessingAI: false,
+};
+
+export const useAppStore = create<AppState>()(
+  devtools(
+    (set, get) => ({
+      ...initialState,
+
+      // 사용자 액션
+      setUser: (user) => set({ user }),
+      setAuthenticated: (authenticated) =>
+        set({ isAuthenticated: authenticated }),
+
+      // 파일 및 시트 액션
+      setCurrentFile: (file) => set({ currentFile: file }),
+      setSheets: (sheets) => set({ sheets }),
+      setActiveSheetId: (sheetId) => set({ activeSheetId: sheetId }),
+      setSelectedRange: (range) => set({ selectedRange: range }),
+
+      // UI 액션
+      setLoading: (loading, message = "") =>
+        set({
+          isLoading: loading,
+          loadingMessage: message,
+        }),
+      setHistoryPanelOpen: (open) => set({ isHistoryPanelOpen: open }),
+
+      // AI 액션
+      addAIHistory: (history) =>
+        set((state) => ({
+          aiHistory: [history, ...state.aiHistory].slice(0, 50), // 최대 50개 유지
+        })),
+      setProcessingAI: (processing) => set({ isProcessingAI: processing }),
+
+      // 복합 액션
+      uploadFile: (result) => {
+        if (result.success && result.data) {
+          set({
+            currentFile: {
+              name: result.fileName || "Unknown",
+              size: result.fileSize || 0,
+              uploadedAt: new Date(),
+            },
+            sheets: result.data,
+            activeSheetId: result.data[0]?.id || null,
+          });
+        }
+      },
+
+      resetApp: () => set(initialState),
+    }),
+    {
+      name: "app-store",
+    }
+  )
+);

src/types/ai.ts

@@ -0,0 +1,50 @@
+// AI 관련 타입 정의
+
+export interface CellStyle {
+  backgroundColor?: string;
+  fontWeight?: "bold" | "normal";
+  color?: string;
+  fontSize?: number;
+  textAlign?: "left" | "center" | "right";
+  border?: string;
+}
+
+export type AIAction =
+  | { type: "formula"; range: string; formula: string }
+  | { type: "style"; range: string; style: CellStyle }
+  | {
+      type: "chart";
+      range: string;
+      chartType: "bar" | "line" | "pie";
+      title: string;
+    }
+  | { type: "value"; range: string; value: string | number }
+  | { type: "sort"; range: string; column: string; order: "asc" | "desc" }
+  | { type: "filter"; range: string; condition: string };
+
+export interface AiRequest {
+  prompt: string;
+  range: string;
+  sheetName: string;
+  preview?: string[][];
+  context?: {
+    selectedCells?: string;
+    sheetData?: any;
+  };
+}
+
+export interface AiResponse {
+  actions: AIAction[];
+  explanation?: string;
+  success: boolean;
+  error?: string;
+}
+
+export interface AIHistory {
+  id: string;
+  timestamp: Date;
+  prompt: string;
+  actions: AIAction[];
+  success: boolean;
+  error?: string;
+}

src/types/sheet.ts

@@ -0,0 +1,56 @@
+// 시트 관련 타입 정의
+
+export interface SheetData {
+  id: string;
+  name: string;
+  data: any[][]; // Luckysheet 데이터 형식
+  config?: LuckysheetConfig;
+}
+
+export interface LuckysheetConfig {
+  container: string;
+  title: string;
+  lang: "en" | "ko";
+  data: any[];
+  options?: {
+    showtoolbar?: boolean;
+    showinfobar?: boolean;
+    showsheetbar?: boolean;
+    showstatisticBar?: boolean;
+    allowCopy?: boolean;
+    allowEdit?: boolean;
+    enableAddRow?: boolean;
+    enableAddCol?: boolean;
+  };
+}
+
+export interface FileUploadResult {
+  success: boolean;
+  data?: SheetData[];
+  error?: string;
+  fileName?: string;
+  fileSize?: number;
+}
+
+export interface ExportOptions {
+  format: "xlsx" | "csv" | "json";
+  fileName: string;
+  sheetIndex?: number;
+}
+
+export interface CellPosition {
+  row: number;
+  col: number;
+}
+
+export interface CellRange {
+  startRow: number;
+  startCol: number;
+  endRow: number;
+  endCol: number;
+}
+
+export interface SelectedRange {
+  range: CellRange;
+  sheetId: string;
+}

src/types/user.ts

@@ -0,0 +1,74 @@
+// 사용자 및 구독 관련 타입 정의
+
+export interface User {
+  id: string;
+  email: string;
+  name?: string;
+  avatar?: string;
+  createdAt: Date;
+  lastLoginAt: Date;
+  subscription: Subscription;
+  preferences: UserPreferences;
+}
+
+export interface Subscription {
+  plan: SubscriptionPlan;
+  status: "active" | "cancelled" | "expired";
+  currentPeriodStart: Date;
+  currentPeriodEnd: Date;
+  usage: Usage;
+}
+
+export type SubscriptionPlan = "free" | "lite" | "pro" | "enterprise";
+
+export interface PlanLimits {
+  aiQueries: number;
+  cellCount: number;
+  canDownload: boolean;
+  canCopy: boolean;
+  maxFileSize: number; // MB
+}
+
+export interface Usage {
+  aiQueries: number;
+  cellCount: number;
+  resetDate: Date;
+}
+
+export interface UserPreferences {
+  language: "ko" | "en";
+  historyPanelPosition: "left" | "right";
+  autoSave: boolean;
+  showAnimations: boolean;
+}
+
+export const PLAN_LIMITS: Record<SubscriptionPlan, PlanLimits> = {
+  free: {
+    aiQueries: 30,
+    cellCount: 300,
+    canDownload: false,
+    canCopy: false,
+    maxFileSize: 10,
+  },
+  lite: {
+    aiQueries: 100,
+    cellCount: 1000,
+    canDownload: true,
+    canCopy: true,
+    maxFileSize: 10,
+  },
+  pro: {
+    aiQueries: 500,
+    cellCount: 5000,
+    canDownload: true,
+    canCopy: true,
+    maxFileSize: 50,
+  },
+  enterprise: {
+    aiQueries: Infinity,
+    cellCount: Infinity,
+    canDownload: true,
+    canCopy: true,
+    maxFileSize: Infinity,
+  },
+};

src/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />

tailwind.config.js

@@ -0,0 +1,81 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: [
+    "./index.html",
+    "./src/**/*.{js,ts,jsx,tsx}",
+  ],
+  theme: {
+    extend: {
+      colors: {
+        border: "hsl(214.3 31.8% 91.4%)",
+        input: "hsl(214.3 31.8% 91.4%)",
+        ring: "hsl(222.2 84% 4.9%)",
+        background: "hsl(0 0% 100%)",
+        foreground: "hsl(222.2 84% 4.9%)",
+        primary: {
+          DEFAULT: "hsl(222.2 47.4% 11.2%)",
+          foreground: "hsl(210 40% 98%)",
+        },
+        secondary: {
+          DEFAULT: "hsl(210 40% 96%)",
+          foreground: "hsl(222.2 84% 4.9%)",
+        },
+        destructive: {
+          DEFAULT: "hsl(0 84.2% 60.2%)",
+          foreground: "hsl(210 40% 98%)",
+        },
+        muted: {
+          DEFAULT: "hsl(210 40% 96%)",
+          foreground: "hsl(215.4 16.3% 46.9%)",
+        },
+        accent: {
+          DEFAULT: "hsl(210 40% 96%)",
+          foreground: "hsl(222.2 84% 4.9%)",
+        },
+        popover: {
+          DEFAULT: "hsl(0 0% 100%)",
+          foreground: "hsl(222.2 84% 4.9%)",
+        },
+        card: {
+          DEFAULT: "hsl(0 0% 100%)",
+          foreground: "hsl(222.2 84% 4.9%)",
+        },
+      },
+      borderRadius: {
+        lg: "0.5rem",
+        md: "calc(0.5rem - 2px)",
+        sm: "calc(0.5rem - 4px)",
+      },
+      keyframes: {
+        "accordion-down": {
+          from: { height: "0" },
+          to: { height: "var(--radix-accordion-content-height)" },
+        },
+        "accordion-up": {
+          from: { height: "var(--radix-accordion-content-height)" },
+          to: { height: "0" },
+        },
+        fadeIn: {
+          from: { opacity: "0" },
+          to: { opacity: "1" },
+        },
+        slideIn: {
+          from: { transform: "translateX(100%)" },
+          to: { transform: "translateX(0)" },
+        },
+        slideOut: {
+          from: { transform: "translateX(0)" },
+          to: { transform: "translateX(100%)" },
+        },
+      },
+      animation: {
+        "accordion-down": "accordion-down 0.2s ease-out",
+        "accordion-up": "accordion-up 0.2s ease-out",
+        "fade-in": "fadeIn 0.2s ease-in-out",
+        "slide-in": "slideIn 0.3s ease-out",
+        "slide-out": "slideOut 0.3s ease-in",
+      },
+    },
+  },
+  plugins: [],
+} 

tsconfig.app.json

@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "ES2020",
+    "useDefineForClassFields": true,
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["src"]
+}

tsconfig.json

@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}

tsconfig.node.json

@@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "ES2022",
+    "lib": ["ES2023"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["vite.config.ts"]
+}

vite.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react()],
+})