[bug]: SearchClient#browse_rules doesn't deserialize api response when a rule has a single condition

[ppatt]

Description

The rules search endpoint in case of a single condition being present returns a condition field:

$ curl --request POST \
  --url https://APP_ID.algolia.net/1/indexes/INDEX/rules/search \
  --header 'accept: application/json' \
  --header 'content-type: application/json' \
  --header 'x-algolia-api-key: API_KEY' \
  --header 'x-algolia-application-id: APP_ID' \
  --data '{"query":""}'

{"hits":[{"_metadata":{"lastUpdate":1599137775},"condition":{"pattern":"some name","anchoring":"is"},"consequence":{"params":{"filters":"name:'some other name'"}},"description":"","enabled":true,"objectID":"123","_highlightResult":{"condition":{"pattern":{"value":"some name","matchLevel":"none","matchedWords":[]}},"consequence":{"params":{"filters":{"value":"name:'some other name'","matchLevel":"none","matchedWords":[]}}},"description":{"value":"","matchLevel":"none","matchedWords":[]}}}],"nbHits":1,"page":0,"nbPages":1}

The Rule class always expects a conditions array:

algoliasearch-client-ruby/lib/algolia/models/search/rule.rb

Line 51 in fa56cdd

:conditions => :"Array<Condition>",

This makes us retrieve conditionless rules in cases where there is a single condition.

We can monkeypatch it with:

module AlgoliaSearchRuleAttributesFix
  def self.prepended(base)
    base.singleton_class.prepend ClassMethods
  end

  module ClassMethods
    def build_from_hash(attributes)
      attributes = attributes.transform_keys(&:to_sym)
      if attributes.key?(:condition)
        (attributes[:conditions] ||= []) << attributes.delete(:condition)
      end
      super attributes
    end
  end
end

Algolia::Search::Rule.prepend AlgoliaSearchRuleAttributesFix

But the fix would be to make the api consistent in case of a single or multiple conditions

Client

Search

Version

3.34.4

Relevant log output