lib/wcc/contentful/exceptions.rb in wcc-contentful-0.3.0.pre.rc3 vs lib/wcc/contentful/exceptions.rb in wcc-contentful-0.3.0

@@ -1,7 +1,40 @@
 # frozen_string_literal: true
 
 module WCC::Contentful
+  # Raised by {WCC::Contentful.validate_models!} if a content type in the space
+  # does not match the validation defined on the associated model.
+  class ValidationError < StandardError
+    Message =
+      Struct.new(:path, :error) do
+        def to_s
+          "#{path}: #{error}"
+        end
+      end
+
+    attr_reader :errors
+
+    def initialize(errors)
+      @errors = ValidationError.join_msg_keys(errors)
+      super("Content Type Schema from Contentful failed validation!\n  #{@errors.join("\n  ")}")
+    end
+
+    # Turns the error messages hash into an array of message structs like:
+    # menu.fields.name.type: must be equal to String
+    def self.join_msg_keys(hash)
+      ret =
+        hash.map do |k, v|
+          if v.is_a?(Hash)
+            msgs = join_msg_keys(v)
+            msgs.map { |msg| Message.new(k.to_s + '.' + msg.path, msg.error) }
+          else
+            v.map { |msg| Message.new(k.to_s, msg) }
+          end
+        end
+      ret.flatten(1)
+    end
+  end
+
   class SyncError < StandardError
   end
 
   # Raised when a constant under {WCC::Contentful::Model} does not match to a
   # content type in the configured Contentful space