// src/repl.ts
/**
* Interactive REPL for rubber duck debugging.
*/
import * as readline from 'readline';
import { Session } from './session.js';
import { generateSummary } from './summary.js';
/**
* Play terminal bell sound.
*/
export function playQuackSound(): void {
process.stdout.write('\x07');
}
/**
* Print with color (basic ANSI).
*/
export function printColored(text: string, color: 'yellow' | 'cyan' | 'gray' = 'yellow'): void {
const colors = {
yellow: '\x1b[33m',
cyan: '\x1b[36m',
gray: '\x1b[90m',
};
const reset = '\x1b[0m';
console.log(`${colors[color]}${text}${reset}`);
}
/**
* Start the interactive REPL.
*/
export async function startREPL(): Promise<void> {
const session = new Session();
// Print greeting
console.log();
printColored(session.getGreeting(), 'yellow');
console.log();
printColored('Type your debugging problem. Type "quit" to exit.', 'gray');
console.log();
// Create readline interface
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
prompt: 'You: ',
});
rl.prompt();
rl.on('line', (line) => {
const result = session.processInput(line);
if (result === null) {
// Session ended
console.log();
printColored(session.getGoodbye(), 'yellow');
console.log();
rl.close();
return;
}
// Print response
console.log();
printColored(result.response, 'cyan');
// Play sound if needed
if (result.sound) {
playQuackSound();
}
console.log();
rl.prompt();
});
rl.on('close', () => {
// Generate summary on exit
printSummary(session);
process.exit(0);
});
}
/**
* Print session summary.
*/
function printSummary(session: Session): void {
const stats = session.getStats();
const durationMs = session.getDuration();
const summary = generateSummary(stats, durationMs);
console.log(summary);
}
