feat: Implement cli helpers

cli/helpers.js

@@ -0,0 +1,46 @@
+/* -------------------------------------------------------------------------- */
+/*                                DEPENDENCIES                                */
+/* -------------------------------------------------------------------------- */
+// packages
+const path = require('path');
+const fs = require('fs').promises;
+
+/* -------------------------------------------------------------------------- */
+/*                              Helper functions                              */
+/* -------------------------------------------------------------------------- */
+
+/**
+ * Capitalizes the first character of the entity name.
+ * @param {string} entity - The entity name
+ * @returns {string} - The capitalized entity name
+ */
+function capitalizeEntity(entity) {
+  return entity.charAt(0).toUpperCase() + entity.slice(1);
+}
+
+/**
+ * Checks if the entity already exists in the project.
+ * If the entity already exists, it logs a message and exits the process.
+ * @param {string} entity - The entity name
+ * @returns {boolean} - Returns true if the entity exists, false otherwise
+ */
+async function isEntityExists(entity) {
+  // Capitalize the entity name
+  const ENTITY = capitalizeEntity(entity);
+
+  // Construct the file path for the model file
+  const modelFilePath = path.join('src', 'models', `${ENTITY}.model.js`);
+
+  try {
+    // Check if the model file exists
+    await fs.access(modelFilePath);
+    return true; // Model file exists
+  } catch (error) {
+    return false; // Model file does not exist
+  }
+}
+
+module.exports = {
+  capitalizeEntity,
+  isEntityExists,
+};