[WIP] Implementing handling for cases where responses for MVW Manifes…

…ts return a 403 response

app/models/iiif_resource.rb

@@ -3,6 +3,8 @@ class IIIFResource < Spotlight::Resources::IiifHarvester
   after_destroy :cleanup_solr
   before_save :set_noid
 
+  validate :valid_url?
+
   def iiif_manifests
     @iiif_manifests ||= ::IiifService.parse(url)
   end
@@ -18,7 +20,9 @@ def noid
   private
 
     def set_noid
-      data["noid"] = iiif_manifests.first.noid
+      first_manifest = iiif_manifests.first
+      return if first_manifest.nil?
+      data["noid"] = first_manifest.noid
     end
 
     def solr
@@ -28,4 +32,13 @@ def solr
     def document_ids
       document_builder.documents_to_index.to_a.map { |y| y[:id] }
     end
+
+    def url_is_forbidden?(url)
+      req = Faraday.head(url)
+      req.status == 403
+    end
+
+    def valid_url?
+      errors.add(:url, 'Invalid IIIF URL') unless url_is_iiif?(url) || url_is_forbidden?(url)
+    end
 end

app/services/iiif_service.rb

@@ -3,6 +3,8 @@ def self.iiif_response(url)
     resp = Faraday.get(url)
     if resp.success?
       resp.body
+    elsif resp.status == 403
+      { 'exhibit_first_public_bsi' => false }.to_json
     else
       Rails.logger.info("Failed to get #{url}")
       {}.to_json