From 7ba8e02de88baebc72a572e8be2fcc065e5a1c86 Mon Sep 17 00:00:00 2001
From: pacnpal <183241239+pacnpal@users.noreply.github.com>
Date: Tue, 10 Dec 2024 18:42:08 -0500
Subject: [PATCH] Initial commit

---
 .github/workflows/release.yml |  31 +++++
 .gitignore                    |   2 +
 README.md                     | 137 ++++++++++++++++++++++
 action.js                     | 211 ++++++++++++++++++++++++++++++++++
 action.yml                    |  21 ++++
 index.js                      |   1 +
 jsconfig.json                 |  27 +++++
 package.json                  |  23 ++++
 8 files changed, 453 insertions(+)
 create mode 100644 .github/workflows/release.yml
 create mode 100644 README.md
 create mode 100644 action.js
 create mode 100644 action.yml
 create mode 100644 index.js
 create mode 100644 jsconfig.json
 create mode 100644 package.json

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..799a381
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,31 @@
+# .github/workflows/release.yml
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          
+      - name: Install dependencies
+        run: npm ci
+        
+      - name: Build
+        run: npm run build
+        
+      - name: Create Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: dist/*
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index c6bba59..f568581 100644
--- a/.gitignore
+++ b/.gitignore
@@ -128,3 +128,5 @@ dist
 .yarn/build-state.yml
 .yarn/install-state.gz
 .pnp.*
+.DS_Store
+*.lockb
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..98fb975
--- /dev/null
+++ b/README.md
@@ -0,0 +1,137 @@
+# Claude Code Review Action
+
+A GitHub Action that performs automated code reviews using Claude AI.
+
+## Features
+- Analyzes code changes in pull requests
+- Provides detailed feedback on code quality
+- Identifies potential issues and suggests improvements
+- Checks for security issues and best practices
+
+## Usage
+
+Add this to your GitHub workflow file (e.g. `.github/workflows/review.yml`):
+
+```yaml
+name: Code Review
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  review:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          
+      - uses: your-username/claude-code-review-action@v1
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          anthropic-key: ${{ secrets.ANTHROPIC_API_KEY }}
+          pr-number: ${{ github.event.pull_request.number }}
+```
+
+## Setup
+
+1. Create repository secret `ANTHROPIC_API_KEY` with your Claude API key from Anthropic
+2. The `GITHUB_TOKEN` is automatically provided by GitHub Actions
+
+## Inputs
+
+| Input | Description | Required | Default |
+|-------|-------------|----------|---------|
+| `github-token` | GitHub token for API access | Yes | N/A |
+| `anthropic-key` | Anthropic API key for Claude | Yes | N/A |
+| `pr-number` | Pull request number to review | Yes | N/A |
+
+## Outputs
+
+| Output | Description |
+|--------|-------------|
+| `diff_size` | Size of the relevant code changes |
+| `review` | Generated code review content |
+
+## Review Format
+
+The action provides detailed code reviews covering:
+
+1. Potential conflicts with existing codebase
+2. Code correctness and potential bugs  
+3. Security vulnerabilities and risks
+4. Performance implications
+5. Maintainability and readability issues
+6. Adherence to best practices
+7. Suggestions for improvements
+
+Each issue found includes:
+- Clear problem explanation
+- Severity rating (Critical/High/Medium/Low)
+- Specific recommendations
+- Code examples where helpful
+
+## Example Review
+
+```markdown
+# Claude Code Review
+
+1. **Potential conflicts with existing codebase**:
+   - No apparent conflicts identified
+   
+2. **Code correctness and potential bugs**:
+   - **Medium Severity**: Potential null pointer in user handling
+   - Recommendation: Add null check before accessing user object
+   
+3. **Security vulnerabilities and risks**: 
+   - **High Severity**: SQL injection vulnerability in query construction
+   - Recommendation: Use parameterized queries
+```
+
+## Development
+
+1. Clone the repository
+2. Install dependencies:
+```bash
+npm install
+```
+
+3. Make changes to `action.js`
+
+4. Build the action:
+```bash
+npm run build
+```
+
+5. Run tests:
+```bash
+npm test
+```
+
+## Contributing
+
+Contributions are welcome! Please:
+
+1. Fork the repository
+2. Create a feature branch
+3. Make your changes
+4. Run tests
+5. Submit a pull request
+
+## License
+
+MIT License - see the [LICENSE](LICENSE) file for details
+
+## Support
+
+- Open an issue for bugs/feature requests
+- Submit a PR to contribute
+- Contact maintainers for other questions
+
+## Changelog
+
+See [CHANGELOG.md](CHANGELOG.md) for release history
\ No newline at end of file
diff --git a/action.js b/action.js
new file mode 100644
index 0000000..e25b701
--- /dev/null
+++ b/action.js
@@ -0,0 +1,211 @@
+// action.js
+const core = require('@actions/core');
+const github = require('@actions/github');
+const { exec } = require('@actions/exec');
+
+async function getPRDetails(octokit, context, prNumber) {
+  try {
+    console.log(`Getting details for PR #${prNumber}`);
+    
+    // Get PR info
+    const { data: pr } = await octokit.rest.pulls.get({
+      ...context.repo,
+      pull_number: parseInt(prNumber)
+    });
+
+    return {
+      number: pr.number,
+      base: {
+        sha: pr.base.sha,
+        ref: pr.base.ref
+      },
+      head: {
+        sha: pr.head.sha,
+        ref: pr.head.ref
+      }
+    };
+  } catch (error) {
+    throw new Error(`Failed to get PR details: ${error.message}`);
+  }
+}
+
+async function setupGitConfig() {
+  // Configure git to fetch PR refs
+  await exec('git', ['config', '--local', '--add', 'remote.origin.fetch', '+refs/pull/*/head:refs/remotes/origin/pr/*']);
+  await exec('git', ['fetch', 'origin']);
+}
+
+async function getDiff(baseSha, headSha) {
+  let diffContent = '';
+  
+  try {
+    // Get the full diff with context
+    await exec('git', ['diff', '-U10', baseSha, headSha], {
+      listeners: {
+        stdout: (data) => {
+          diffContent += data.toString();
+        }
+      }
+    });
+
+    // Filter for relevant files
+    const lines = diffContent.split('\n');
+    let filtered = '';
+    let keep = false;
+
+    for (const line of lines) {
+      if (line.startsWith('diff --git')) {
+        keep = false;
+        // Check if file type should be included
+        if (line.match(/\.(js|ts|py|cpp|h|java|cs)$/) && 
+            !line.match(/(package-lock\.json|yarn\.lock|\.md|\.json)/)) {
+          keep = true;
+        }
+      }
+      if (keep) {
+        filtered += line + '\n';
+      }
+    }
+
+    return filtered;
+  } catch (error) {
+    throw new Error(`Failed to generate diff: ${error.message}`);
+  }
+}
+
+async function analyzeWithClaude(diffContent, anthropicKey) {
+  if (!diffContent.trim()) {
+    return null;
+  }
+
+  const prompt = `You are performing a code review. Please analyze this code diff and provide a thorough review that covers:
+
+1. Potential conflicts with existing codebase
+2. Code correctness and potential bugs
+3. Security vulnerabilities or risks
+4. Performance implications
+5. Maintainability and readability issues
+6. Adherence to best practices and coding standards
+7. Suggestions for improvements
+
+For each issue found:
+- Explain the problem clearly
+- Rate the severity (Critical/High/Medium/Low)
+- Provide specific recommendations for fixes
+- Include code examples where helpful
+
+If no issues are found in a particular area, explicitly state that.
+
+Here is the code diff to review:
+
+\`\`\`
+${diffContent}
+\`\`\``;
+
+  try {
+    const response = await fetch('https://api.anthropic.com/v1/messages', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        'x-api-key': anthropicKey,
+        'anthropic-version': '2023-06-01'
+      },
+      body: JSON.stringify({
+        model: 'claude-3-sonnet-20240229',
+        max_tokens: 4096,
+        temperature: 0.7,
+        messages: [{
+          role: 'user',
+          content: prompt
+        }]
+      })
+    });
+
+    const data = await response.json();
+    if (!data.content?.[0]?.text) {
+      throw new Error(`API Error: ${JSON.stringify(data)}`);
+    }
+
+    return data.content[0].text;
+  } catch (error) {
+    throw new Error(`Claude API error: ${error.message}`);
+  }
+}
+
+async function postReview(octokit, context, review, prNumber) {
+  try {
+    // Escape special characters for proper formatting
+    const escapedReview = review
+      .replace(/(?<=[\s\n])`([^`]+)`(?=[\s\n])/g, '\\`$1\\`')
+      .replace(/```/g, '\\`\\`\\`')
+      .replace(/\${/g, '\\${');
+
+    await octokit.rest.issues.createComment({
+      ...context.repo,
+      issue_number: prNumber,
+      body: `# Claude Code Review\n\n${escapedReview}`
+    });
+  } catch (error) {
+    throw new Error(`Failed to post review: ${error.message}`);
+  }
+}
+
+async function run() {
+  try {
+    // Get inputs
+    const token = core.getInput('github-token', { required: true });
+    const anthropicKey = core.getInput('anthropic-key', { required: true });
+    
+    // Initialize GitHub client
+    const octokit = github.getOctokit(token);
+    const context = github.context;
+
+    // Get PR number from event or input
+    let prNumber;
+    if (context.eventName === 'pull_request') {
+      prNumber = context.payload.pull_request.number;
+    } else {
+      prNumber = core.getInput('pr-number', { required: true });
+    }
+
+    // Set up git configuration
+    await setupGitConfig();
+
+    // Get PR details
+    const pr = await getPRDetails(octokit, context, prNumber);
+    console.log(`Retrieved details for PR #${pr.number}`);
+
+    // Generate diff
+    console.log('Generating diff...');
+    const diff = await getDiff(pr.base.sha, pr.head.sha);
+    
+    if (!diff) {
+      console.log('No relevant changes found');
+      core.setOutput('diff_size', '0');
+      return;
+    }
+
+    core.setOutput('diff_size', diff.length.toString());
+
+    // Analyze with Claude
+    console.log('Analyzing with Claude...');
+    const review = await analyzeWithClaude(diff, anthropicKey);
+    
+    if (!review) {
+      console.log('No review generated');
+      return;
+    }
+
+    // Post review
+    console.log('Posting review...');
+    await postReview(octokit, context, review, pr.number);
+
+    // Set outputs
+    core.setOutput('review', review);
+
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+run();
\ No newline at end of file
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..3b03f60
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,21 @@
+# action.yml
+name: 'Claude Code Review'
+description: 'Automated code review using Claude'
+inputs:
+  github-token:
+    description: 'GitHub token'
+    required: true
+  anthropic-key:
+    description: 'Anthropic API key'
+    required: true
+  pr-number:
+    description: 'Pull request number'
+    required: true
+outputs:
+  diff_size:
+    description: 'Size of the relevant code changes'
+  review:
+    description: 'Generated code review'
+runs:
+  using: 'node20'
+  main: 'action.js'
\ No newline at end of file
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..f67b2c6
--- /dev/null
+++ b/index.js
@@ -0,0 +1 @@
+console.log("Hello via Bun!");
\ No newline at end of file
diff --git a/jsconfig.json b/jsconfig.json
new file mode 100644
index 0000000..238655f
--- /dev/null
+++ b/jsconfig.json
@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    // Enable latest features
+    "lib": ["ESNext", "DOM"],
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleDetection": "force",
+    "jsx": "react-jsx",
+    "allowJs": true,
+
+    // Bundler mode
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "noEmit": true,
+
+    // Best practices
+    "strict": true,
+    "skipLibCheck": true,
+    "noFallthroughCasesInSwitch": true,
+
+    // Some stricter flags (disabled by default)
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noPropertyAccessFromIndexSignature": false
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..faa7a6a
--- /dev/null
+++ b/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "claude-code-review-action",
+  "version": "1.0.0",
+  "description": "GitHub Action for code review using Claude",
+  "main": "action.js",
+  "scripts": {
+    "test": "jest",
+    "build": "ncc build action.js -o dist"
+  },
+  "keywords": ["github", "action", "code-review", "claude"],
+  "author": "PacNPal",
+  "license": "MIT",
+  "dependencies": {
+    "@actions/core": "^1.10.1",
+    "@actions/github": "^6.0.0",
+    "@actions/exec": "^1.1.1",
+    "node-fetch": "^3.3.2"
+  },
+  "devDependencies": {
+    "@vercel/ncc": "^0.38.3",
+    "jest": "^29.7.0"
+  }
+}
\ No newline at end of file