add: validate sub section

validate/sub_section.schema.js

@@ -0,0 +1,31 @@
+const Joi = require("joi");
+
+// ========================
+// Plant Sub Section Validation
+// ========================
+const insertSubSectionSchema = Joi.object({
+  sub_section_name: Joi.string()
+    .max(200)
+    .required()
+    .messages({
+      "string.base": "Sub section name must be a string",
+      "string.max": "Sub section name cannot exceed 200 characters",
+      "any.required": "Sub section name is required"
+    }),
+});
+
+const updateSubSectionSchema = Joi.object({
+  sub_section_name: Joi.string()
+    .max(200)
+    .messages({
+      "string.base": "Sub section name must be a string",
+      "string.max": "Sub section name cannot exceed 200 characters",
+    }),
+}).min(1).messages({
+  "object.min": "At least one field must be provided to update",
+});
+
+module.exports = {
+  insertSubSectionSchema,
+  updateSubSectionSchema
+};