Code Examples

# Start interactive chat
gemini chat

# Ask a single question
gemini ask "What is machine learning?"

# Ask with specific model
gemini ask "Explain quantum computing" --model gemini-pro

# Analyze a single file
gemini analyze src/main.js

# Analyze multiple files
gemini analyze src/*.js --type code-review

# Get code suggestions
gemini analyze package.json --suggest-improvements

# View current configuration
gemini config list

# Set default model
gemini config set model gemini-pro

# Set temperature
gemini config set temperature 0.7

# Reset to defaults
gemini config reset

#!/bin/bash
# code-review.sh - Automated code review script

# Get changed files
CHANGED_FILES=$(git diff --name-only HEAD~1)

echo "🔍 Starting automated code review..."

for file in $CHANGED_FILES; do
  if [[ $file == *.js || $file == *.ts || $file == *.py ]]; then
    echo "📝 Reviewing: $file"
    
    # Analyze the file
    gemini analyze "$file" \
      --type code-review \
      --prompt "Review this code for bugs, performance issues, and best practices" \
      --output review-$file.md
  fi
done

echo "✅ Code review complete! Check review-*.md files"

#!/bin/bash
# generate-docs.sh - Auto-generate documentation

echo "📚 Generating documentation..."

# Generate API docs
gemini analyze src/api/*.js \
  --prompt "Generate comprehensive API documentation with examples" \
  --output docs/api.md

# Generate README
gemini ask "Create a README.md for this project based on the codebase" \
  --context src/ \
  --output README.md

# Generate changelog
git log --oneline --since="1 month ago" | \
  gemini ask "Convert these git commits into a changelog" \
  --output CHANGELOG.md

echo "✅ Documentation generated!"

#!/bin/bash
# generate-tests.sh - Auto-generate unit tests

SOURCE_DIR="src"
TEST_DIR="tests"

echo "🧪 Generating unit tests..."

find $SOURCE_DIR -name "*.js" -o -name "*.ts" | while read file; do
  # Get relative path
  rel_path=${file#$SOURCE_DIR/}
  test_file="$TEST_DIR/${rel_path%.*}.test.${file##*.}"

  echo "📝 Generating tests for: $file"

  gemini analyze "$file" \
    --prompt "Generate comprehensive unit tests with edge cases" \
    --template jest \
    --output "$test_file"
done

echo "✅ Test generation complete!"

name: AI Code Review
on:
  pull_request:
    types: [opened, synchronize]

jobs:
  ai-review:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
      
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
      
      - name: Install Gemini CLI
        run: npm install -g @google/generative-ai-cli
      
      - name: Configure Gemini CLI
        run: |
          gemini config set api-key ${{ secrets.GEMINI_API_KEY }}
          gemini config set model gemini-pro
      
      - name: Get changed files
        id: changed-files
        run: |
          echo "files=$(git diff --name-only HEAD~1 | tr '\n' ' ')" >> $GITHUB_OUTPUT
      
      - name: AI Code Review
        run: |
          for file in ${{ steps.changed-files.outputs.files }}; do
            if [[ $file == *.js || $file == *.ts || $file == *.py ]]; then
              gemini analyze "$file" \
                --type code-review \
                --output "review-$file.md"
            fi
          done
      
      - name: Comment PR
        uses: actions/github-script@v6
        with:
          script: |
            const fs = require('fs');
            const reviews = fs.readdirSync('.').filter(f => f.startsWith('review-'));
            
            let comment = '## 🤖 AI Code Review\n\n';
            reviews.forEach(file => {
              const content = fs.readFileSync(file, 'utf8');
              comment += `### ${file}\n${content}\n\n`;
            });
            
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: comment
            });

// extension.js - VS Code extension for Gemini CLI
const vscode = require('vscode');
const { exec } = require('child_process');

function activate(context) {
  // Command: Explain Code
  let explainCommand = vscode.commands.registerCommand(
    'gemini.explainCode', 
    async () => {
      const editor = vscode.window.activeTextEditor;
      if (!editor) return;

      const selection = editor.selection;
      const text = editor.document.getText(selection);
      
      if (!text) {
        vscode.window.showErrorMessage('Please select code to explain');
        return;
      }

      // Show progress
      vscode.window.withProgress({
        location: vscode.ProgressLocation.Notification,
        title: "Explaining code with Gemini...",
        cancellable: false
      }, async () => {
        return new Promise((resolve, reject) => {
          exec(`echo "${text}" | gemini ask "Explain this code"`, 
            (error, stdout, stderr) => {
              if (error) {
                vscode.window.showErrorMessage(`Error: ${error.message}`);
                reject(error);
                return;
              }
              
              // Show explanation in new document
              vscode.workspace.openTextDocument({
                content: stdout,
                language: 'markdown'
              }).then(doc => {
                vscode.window.showTextDocument(doc);
                resolve();
              });
            });
        });
      });
    }
  );

  // Command: Generate Tests
  let testCommand = vscode.commands.registerCommand(
    'gemini.generateTests',
    async () => {
      const editor = vscode.window.activeTextEditor;
      if (!editor) return;

      const filePath = editor.document.fileName;
      const testPath = filePath.replace(/\.(js|ts)$/, '.test.$1');

      exec(`gemini analyze "${filePath}" --prompt "Generate unit tests" --output "${testPath}"`,
        (error, stdout, stderr) => {
          if (error) {
            vscode.window.showErrorMessage(`Error: ${error.message}`);
            return;
          }
          
          vscode.window.showInformationMessage(`Tests generated: ${testPath}`);
          vscode.workspace.openTextDocument(testPath).then(doc => {
            vscode.window.showTextDocument(doc);
          });
        });
    }
  );

  context.subscriptions.push(explainCommand, testCommand);
}

function deactivate() {}

module.exports = { activate, deactivate };

// custom-tools.js - Custom tool definitions
const tools = {
  // Database query tool
  database_query: {
    name: 'database_query',
    description: 'Execute SQL queries on the database',
    parameters: {
      query: { type: 'string', required: true },
      database: { type: 'string', default: 'main' }
    },
    execute: async ({ query, database }) => {
      const db = require('./db-connection');
      try {
        const result = await db.query(query, database);
        return JSON.stringify(result, null, 2);
      } catch (error) {
        return `Error: ${error.message}`;
      }
    }
  },

  // API testing tool
  api_test: {
    name: 'api_test',
    description: 'Test API endpoints',
    parameters: {
      url: { type: 'string', required: true },
      method: { type: 'string', default: 'GET' },
      headers: { type: 'object', default: {} },
      body: { type: 'object', default: null }
    },
    execute: async ({ url, method, headers, body }) => {
      const fetch = require('node-fetch');
      try {
        const response = await fetch(url, {
          method,
          headers,
          body: body ? JSON.stringify(body) : undefined
        });
        
        const data = await response.text();
        return `Status: ${response.status}\nResponse: ${data}`;
      } catch (error) {
        return `Error: ${error.message}`;
      }
    }
  },

  // Code formatter tool
  format_code: {
    name: 'format_code',
    description: 'Format code using prettier',
    parameters: {
      code: { type: 'string', required: true },
      language: { type: 'string', default: 'javascript' }
    },
    execute: async ({ code, language }) => {
      const prettier = require('prettier');
      try {
        const formatted = prettier.format(code, {
          parser: language === 'typescript' ? 'typescript' : 'babel',
          semi: true,
          singleQuote: true,
          tabWidth: 2
        });
        return formatted;
      } catch (error) {
        return `Error: ${error.message}`;
      }
    }
  }
};

// Register tools with Gemini CLI
Object.values(tools).forEach(tool => {
  process.env.GEMINI_TOOLS = JSON.stringify([
    ...(JSON.parse(process.env.GEMINI_TOOLS || '[]')),
    tool
  ]);
});

module.exports = tools;

#!/bin/bash
# batch-process.sh - Batch processing with Gemini CLI

BATCH_SIZE=5
CONCURRENT_JOBS=3

# Function to process a single file
process_file() {
  local file=$1
  local task=$2
  
  echo "🔄 Processing: $file"
  
  case $task in
    "translate")
      gemini ask "Translate this code comments to English" \
        --file "$file" \
        --output "${file%.js}.en.js"
      ;;
    "optimize")
      gemini analyze "$file" \
        --prompt "Optimize this code for performance" \
        --output "${file%.js}.optimized.js"
      ;;
    "document")
      gemini analyze "$file" \
        --prompt "Add comprehensive JSDoc comments" \
        --output "${file%.js}.documented.js"
      ;;
  esac
  
  echo "✅ Completed: $file"
}

# Main batch processing function
batch_process() {
  local task=$1
  shift
  local files=("$@")
  
  echo "🚀 Starting batch processing: $task"
  echo "📁 Files to process: ${#files[@]}"

  # Process files in batches
  for ((i=0; i<${#files[@]}; i+=BATCH_SIZE)); do
    batch=("${files[@]:i:BATCH_SIZE}")
    
    echo "📦 Processing batch $((i/BATCH_SIZE + 1))"
    
    # Process batch with limited concurrency
    for file in "${batch[@]}"; do
      (($(jobs -r | wc -l) >= CONCURRENT_JOBS)) && wait
      process_file "$file" "$task" &
    done
    
    wait # Wait for current batch to complete
  done
  
  echo "🎉 Batch processing complete!"
}

# Usage examples
case $1 in
  "translate")
    batch_process "translate" src/**/*.js
    ;;
  "optimize")
    batch_process "optimize" src/**/*.js
    ;;
  "document")
    batch_process "document" src/**/*.js
    ;;
  *)
    echo "Usage: $0 {translate|optimize|document}"
    exit 1
    ;;
esac