Add invite filter (#5862)

app/models/invite.rb

@@ -17,6 +17,9 @@ class Invite < ApplicationRecord
   belongs_to :user, required: true
   has_many :users, inverse_of: :invite
 
+  scope :available, -> { where(expires_at: nil).or(where('expires_at >= ?', Time.now.utc)) }
+  scope :expired, -> { where.not(expires_at: nil).where('expires_at < ?', Time.now.utc) }
+
   before_validation :set_code
 
   attr_reader :expires_in

app/models/invite_filter.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class InviteFilter
+  attr_reader :params
+
+  def initialize(params)
+    @params = params
+  end
+
+  def results
+    scope = Invite.order(created_at: :desc)
+
+    params.each do |key, value|
+      scope.merge!(scope_for(key, value)) if value.present?
+    end
+
+    scope
+  end
+
+  private
+
+  def scope_for(key, _value)
+    case key.to_s
+    when 'available'
+      Invite.available
+    when 'expired'
+      Invite.expired
+    else
+      raise "Unknown filter: #{key}"
+    end
+  end
+end