From d2afddfeff29c15cad737db4898664381ce0f985 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9my=20Coutable?= <remy@rymai.me>
Date: Thu, 6 Sep 2018 12:07:33 +0200
Subject: Refactor EventFilter and increase its test coverage
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Signed-off-by: Rémy Coutable <remy@rymai.me>
---
 lib/event_filter.rb | 86 ++++++++++++++++-------------------------------------
 1 file changed, 26 insertions(+), 60 deletions(-)

(limited to 'lib/event_filter.rb')

diff --git a/lib/event_filter.rb b/lib/event_filter.rb
index f756a211a12..24fdcd6fbb1 100644
--- a/lib/event_filter.rb
+++ b/lib/event_filter.rb
@@ -1,76 +1,42 @@
-class EventFilter
-  attr_accessor :params
-
-  class << self
-    def all
-      'all'
-    end
-
-    def push
-      'push'
-    end
-
-    def merged
-      'merged'
-    end
+# frozen_string_literal: true
 
-    def issue
-      'issue'
-    end
-
-    def comments
-      'comments'
-    end
-
-    def team
-      'team'
-    end
+class EventFilter
+  attr_accessor :filter
+
+  ALL = 'all'
+  PUSH = 'push'
+  MERGED = 'merged'
+  ISSUE = 'issue'
+  COMMENTS = 'comments'
+  TEAM = 'team'
+  FILTERS = [ALL, PUSH, MERGED, ISSUE, COMMENTS, TEAM].freeze
+
+  def initialize(filter)
+    # Split using comma to maintain backward compatibility Ex/ "filter1,filter2"
+    filter = filter.to_s.split(',')[0].to_s
+    @filter = FILTERS.include?(filter) ? filter : ALL
   end
 
-  def initialize(params)
-    @params = if params
-                params.dup
-              else
-                [] # EventFilter.default_filter
-              end
+  def active?(key)
+    filter == key.to_s
   end
 
   # rubocop: disable CodeReuse/ActiveRecord
   def apply_filter(events)
-    return events if params.blank? || params == EventFilter.all
-
-    case params
-    when EventFilter.push
+    case filter
+    when PUSH
       events.where(action: Event::PUSHED)
-    when EventFilter.merged
+    when MERGED
       events.where(action: Event::MERGED)
-    when EventFilter.comments
+    when COMMENTS
       events.where(action: Event::COMMENTED)
-    when EventFilter.team
+    when TEAM
       events.where(action: [Event::JOINED, Event::LEFT, Event::EXPIRED])
-    when EventFilter.issue
+    when ISSUE
       events.where(action: [Event::CREATED, Event::UPDATED, Event::CLOSED, Event::REOPENED])
-    end
-  end
-  # rubocop: enable CodeReuse/ActiveRecord
-
-  def options(key)
-    filter = params.dup
-
-    if filter.include? key
-      filter.delete key
     else
-      filter << key
-    end
-
-    filter
-  end
-
-  def active?(key)
-    if params.present?
-      params.include? key
-    else
-      key == EventFilter.all
+      events
     end
   end
+  # rubocop: enable CodeReuse/ActiveRecord
 end
-- 
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