chore: added logging

src/cli/ui.js

@@ -21,6 +21,7 @@ export function showHelp() {
 
   console.log(chalk.yellow.bold('OPTIONS:'));
   console.log('  --config <file>      YAML configuration file for authentication and testing parameters');
+  console.log('  --log [file]         Capture all output to log file (default: shannon-<timestamp>.log)');
   console.log('  --pipeline-testing   Use minimal prompts for fast pipeline testing (creates minimal deliverables)\n');
 
   console.log(chalk.yellow.bold('DEVELOPER COMMANDS:'));
@@ -36,6 +37,7 @@ export function showHelp() {
   console.log('  # Normal mode - create new session');
   console.log('  ./shannon.mjs "https://example.com" "/path/to/local/repo"');
   console.log('  ./shannon.mjs "https://example.com" "/path/to/local/repo" --config auth.yaml');
+  console.log('  ./shannon.mjs "https://example.com" "/path/to/local/repo" --log pentest.log');
   console.log('  ./shannon.mjs "https://example.com" "/path/to/local/repo" --setup-only  # Setup only\n');
 
   console.log('  # Developer mode - operate on existing session');

src/utils/logger.js

@@ -0,0 +1,55 @@
+import { fs } from 'zx';
+import { path } from 'zx';
+
+/**
+ * Sets up logging to capture all stdout and stderr to a file
+ * @param {string} logFilePath - Path to the log file
+ * @returns {Promise<Function>} Cleanup function to restore original streams
+ */
+export async function setupLogging(logFilePath) {
+  // Resolve to absolute path
+  const absoluteLogPath = path.isAbsolute(logFilePath)
+    ? logFilePath
+    : path.join(process.cwd(), logFilePath);
+
+  // Ensure the directory exists
+  await fs.ensureDir(path.dirname(absoluteLogPath));
+
+  // Create write stream for the log file
+  const logStream = fs.createWriteStream(absoluteLogPath, { flags: 'a' });
+
+  // Store original stdout/stderr write functions
+  const originalStdoutWrite = process.stdout.write.bind(process.stdout);
+  const originalStderrWrite = process.stderr.write.bind(process.stderr);
+
+  // Override stdout
+  process.stdout.write = function(chunk, encoding, callback) {
+    // Write to both original stdout and log file
+    originalStdoutWrite(chunk, encoding, callback);
+    logStream.write(chunk, encoding);
+    return true;
+  };
+
+  // Override stderr
+  process.stderr.write = function(chunk, encoding, callback) {
+    // Write to both original stderr and log file
+    originalStderrWrite(chunk, encoding, callback);
+    logStream.write(chunk, encoding);
+    return true;
+  };
+
+  // Return cleanup function
+  return async function cleanup() {
+    // Restore original streams
+    process.stdout.write = originalStdoutWrite;
+    process.stderr.write = originalStderrWrite;
+
+    // Close the log stream
+    return new Promise((resolve, reject) => {
+      logStream.end((err) => {
+        if (err) reject(err);
+        else resolve();
+      });
+    });
+  };
+}