Create input_validator.rb

global_business/business/lib/input_validator.rb

@@ -0,0 +1,24 @@
+class InputValidator
+  def self.validate(input, rules)
+    errors = {}
+    rules.each do |field, rule|
+      value = input[field]
+      if value.nil? || value.empty?
+        errors[field] = "cannot be blank"
+      elsif rule[:type] == :string
+        if value.length < rule[:min_length] || value.length > rule[:max_length]
+          errors[field] = "must be between #{rule[:min_length]} and #{rule[:max_length]} characters"
+        end
+      elsif rule[:type] == :email
+        if !value.match?(/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/)
+          errors[field] = "must be a valid email address"
+        end
+      elsif rule[:type] == :password
+        if value.length < rule[:min_length]
+          errors[field] = "must be at least #{rule[:min_length]} characters"
+        end
+      end
+    end
+    errors
+  end
+end