1 files changed, 68 insertions, 0 deletions
diff --git a/app/finders/packages/build_infos_finder.rb b/app/finders/packages/build_infos_finder.rb
new file mode 100644
index 00000000000..92ad5888eb9
--- /dev/null
+++ b/app/finders/packages/build_infos_finder.rb
@@ -0,0 +1,68 @@
+# frozen_string_literal: true
+
+module Packages
+  class BuildInfosFinder
+    MAX_PAGE_SIZE = 100
+
+    def initialize(package, params)
+      @package = package
+      @params = params
+    end
+
+    def execute
+      build_infos = @package.build_infos.without_empty_pipelines
+      build_infos = apply_order(build_infos)
+      build_infos = apply_limit(build_infos)
+      apply_cursor(build_infos)
+    end
+
+    private
+
+    def apply_order(build_infos)
+      order_direction = :desc
+      order_direction = :asc if last
+
+      build_infos.order_by_pipeline_id(order_direction)
+    end
+
+    def apply_limit(build_infos)
+      limit = [first, last, max_page_size, MAX_PAGE_SIZE].compact.min
+      limit += 1 if support_next_page
+      build_infos.limit(limit)
+    end
+
+    def apply_cursor(build_infos)
+      if before
+        build_infos.with_pipeline_id_greater_than(before)
+      elsif after
+        build_infos.with_pipeline_id_less_than(after)
+      else
+        build_infos
+      end
+    end
+
+    def first
+      @params[:first]
+    end
+
+    def last
+      @params[:last]
+    end
+
+    def max_page_size
+      @params[:max_page_size]
+    end
+
+    def before
+      @params[:before]
+    end
+
+    def after
+      @params[:after]
+    end
+
+    def support_next_page
+      @params[:support_next_page]
+    end
+  end
+end