import { ClaudeCode } from 'claude-code-js';

// Initialize the SDK
const claude = new ClaudeCode({
  apiKey: process.env.CLAUDE_API_KEY, // Optional: if already logged in
  model: 'claude-3-sonnet', // Optional: specify model
  workingDirectory: './my-project', // Optional: set working directory
  verbose: false // Optional: enable verbose logging
});

// Send a chat message to Claude with a prompt
const response = await claude.chat({
  prompt: 'Explain this error: TypeError: Cannot read property of undefined',
  systemPrompt: 'You are a helpful coding assistant', // Optional
  appendSystemPrompt: 'Keep explanations concise' // Optional
});

if (response.success) {
  console.log('Result:', response.message.result);
  console.log('Session ID:', response.message.session_id);
  console.log('Cost:', response.message.cost_usd);
} else {
  console.error('Error:', response.error.message);
}

// Have Claude execute a task
const result = await claude.runCommand('Fix the failing tests in src/utils.test.js');

if (result.success) {
  console.log('Claude completed the task');
  console.log('Result:', result.message.result);
  console.log('Duration:', result.message.duration_ms, 'ms');
}

// Create a new session for ongoing conversations
const session = await claude.newSession({
  prompt: 'What is 2 + 2?',
  systemPrompt: 'You are expert at math. Always return a single line of text in format: equation = result'
});

// Access the initial response
const firstMessage = session.messages[0];
console.log('First response:', firstMessage.result);

// Continue the conversation
const secondMessage = await session.prompt({
  prompt: '3 + 3 = 6'
});
console.log('Second response:', secondMessage.result);

// Ask for history
const history = await session.prompt({
  prompt: 'Send the history of all validations you have done so far'
});
console.log('History:', history.result);

// Session tracks all messages and session IDs
console.log('Total messages:', session.messages.length);
console.log('All session IDs:', session.sessionIds);

import { executeCommand, streamCommand } from 'claude-code-js';

// Execute a command and get the full output
const { stdout, stderr, exitCode } = await executeCommand(['npm', 'test'], {
  cwd: './my-project',
  timeout: 30000
});

// Stream command output in real-time
const stream = streamCommand(['npm', 'run', 'dev'], {
  onStdout: (data) => console.log('Output:', data),
  onStderr: (data) => console.error('Error:', data)
});

// Wait for completion
await stream;

const claude = new ClaudeCode();

// Create a code review session
const reviewer = await claude.newSession({
  prompt: `Review this Express route for security issues:
    app.post('/login', (req, res) => {
      const { username, password } = req.body;
      const user = db.query('SELECT * FROM users WHERE username = "' + username + '"');
      if (user && user.password === password) {
        res.json({ token: jwt.sign({ id: user.id }, 'secret') });
      }
    })`,
  systemPrompt: 'You are a security-focused code reviewer. Identify vulnerabilities and suggest fixes.'
});

console.log('Initial review:', reviewer.messages[0].result);

// Ask for specific improvements
const improvements = await reviewer.prompt({
  prompt: 'Show me how to fix the SQL injection vulnerability'
});
console.log('Improved code:', improvements.result);

const claude = new ClaudeCode({ workingDirectory: './my-app' });

// Generate tests for a specific function
const response = await claude.chat({
  prompt: `Generate Jest unit tests for this function:
    export function calculateDiscount(price, discountPercent) {
      if (discountPercent < 0 || discountPercent > 100) {
        throw new Error('Invalid discount percentage');
      }
      return price * (1 - discountPercent / 100);
    }`,
  systemPrompt: 'Generate comprehensive Jest tests with edge cases'
});

if (response.success) {
  // Save the generated tests
  await writeFile('./tests/calculateDiscount.test.js', response.message.result);
}

const debugSession = await claude.newSession({
  prompt: 'I have a React component that re-renders infinitely. Help me debug it.',
  systemPrompt: 'You are a React debugging expert. Ask clarifying questions and provide solutions.'
});

// Provide more context
await debugSession.prompt({
  prompt: `Here's my component:
    function UserList() {
      const [users, setUsers] = useState([]);
      const fetchUsers = async () => {
        const data = await api.getUsers();
        setUsers(data);
      };
      fetchUsers();
      return <div>{users.map(u => <div>{u.name}</div>)}</div>;
    }`
});

// Get step-by-step debugging guidance
const solution = await debugSession.prompt({
  prompt: `What's causing the infinite re-render and how do I fix it?`
});

const claude = new ClaudeCode();

// Create independent sessions for different tasks
const codeReviewSession = await claude.newSession({
  prompt: 'Review this code for best practices: function getData() { return fetch("/api").then(r => r.json()) }',
  systemPrompt: 'You are a code reviewer focused on best practices and performance'
});

const debugSession = await claude.newSession({
  prompt: 'Help me debug this error: ReferenceError: user is not defined',
  systemPrompt: 'You are a debugging expert'
});

// Continue conversations independently
await codeReviewSession.prompt({ prompt: 'How can I add error handling?' });
await debugSession.prompt({ prompt: 'The error occurs in line 45 of auth.js' });

// Use output from one session as input to another
const mathSession = await claude.newSession({
  prompt: 'Calculate 15 * 23',
  systemPrompt: 'You are a math expert. Return only the numeric result.'
});

const validationSession = await claude.newSession({
  prompt: mathSession.messages[0].result,
  systemPrompt: 'You are expert at validating math calculations.'
});

console.log('Validation result:', validationSession.messages[0].result);

// Update configuration on the fly
claude.setOptions({
  model: 'claude-3-opus',
  verbose: true
});

// Get current configuration
const options = claude.getOptions();
console.log('Current model:', options.model);

// Get the Claude Code CLI version
const version = await claude.version();
console.log('Claude Code CLI version:', version);

try {
  const response = await claude.chat({
    prompt: 'Refactor this function to use async/await'
  });
  
  if (!response.success) {
    // Handle Claude Code specific errors
    console.error(`Error Code: ${response.error.code}`);
    console.error(`Message: ${response.error.message}`);
    
    if (response.error.details) {
      console.error('Details:', response.error.details);
    }
  }
} catch (error) {
  // Handle network or other errors
  console.error('Unexpected error:', error);
}

const claude = new ClaudeCode({
  apiKey: 'your-api-key', // Optional: if already logged in via CLI
  model: 'claude-3-sonnet', // Optional: model to use
  workingDirectory: './path/to/project', // Optional: working directory
  verbose: false // Optional: enable verbose output
});