diff options
Diffstat (limited to 'app/services/tag_search_service.rb')
-rw-r--r-- | app/services/tag_search_service.rb | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/app/services/tag_search_service.rb b/app/services/tag_search_service.rb new file mode 100644 index 000000000..64dd76bb7 --- /dev/null +++ b/app/services/tag_search_service.rb @@ -0,0 +1,82 @@ +# frozen_string_literal: true + +class TagSearchService < BaseService + def call(query, options = {}) + @query = query.strip.gsub(/\A#/, '') + @offset = options[:offset].to_i + @limit = options[:limit].to_i + + if Chewy.enabled? + from_elasticsearch + else + from_database + end + end + + private + + def from_elasticsearch + query = { + function_score: { + query: { + multi_match: { + query: @query, + fields: %w(name.edge_ngram name), + type: 'most_fields', + operator: 'and', + }, + }, + + functions: [ + { + field_value_factor: { + field: 'usage', + modifier: 'log2p', + missing: 0, + }, + }, + + { + gauss: { + last_status_at: { + scale: '7d', + offset: '14d', + decay: 0.5, + }, + }, + }, + ], + + boost_mode: 'multiply', + }, + } + + filter = { + bool: { + should: [ + { + term: { + reviewed: { + value: true, + }, + }, + }, + + { + term: { + name: { + value: @query, + }, + }, + }, + ], + }, + } + + TagsIndex.query(query).filter(filter).limit(@limit).offset(@offset).objects.compact + end + + def from_database + Tag.search_for(@query, @limit, @offset) + end +end |