Refactor code structure for improved readability and maintainability

services/modules/save-file/convert.js

@@ -0,0 +1,32 @@
+#!/usr/bin/env node
+//Call with convert.js <input.md> <output.pdf|docx|html|odt>
+const { execSync } = require('child_process');
+const fs = require('fs');
+const path = require('path');
+
+const args = process.argv.slice(2);
+
+if (args.length < 2) {
+  console.log('Usage: node convert.js <input.md> <output.pdf|docx|html|odt>');
+  process.exit(1);
+}
+
+const inputFile = args[0];
+const outputFile = args[1];
+const format = path.extname(outputFile).slice(1);
+
+if (!fs.existsSync(inputFile)) {
+  console.error(`File not found: ${inputFile}`);
+  process.exit(1);
+}
+
+console.log(`Converting ${path.basename(inputFile)} → ${path.basename(outputFile)} ...`);
+
+try {
+  const cmd = `pandoc "${inputFile}" -o "${outputFile}"`;
+  execSync(cmd, { stdio: 'inherit' });
+  console.log(`Successfully saved: ${outputFile}`);
+} catch (err) {
+  console.error('Error during conversion.');
+  process.exit(1);
+}