Implement CSV import and conversion to contestants

app/models/csv_import.rb

@@ -3,23 +3,26 @@
 # Table name: csv_imports
 #
 #  id         :integer          not null, primary key
-#  separator  :integer          not null
+#  content    :string           not null
+#  separator  :string           not null
 #  created_at :datetime         not null
 #  updated_at :datetime         not null
 #
 class CsvImport < ApplicationRecord
-  enum :separator, { comma: ",", semicolon: ";" }, default: :comma
+  enum :separator, { comma: ",", semicolon: ";" }, suffix: true, default: :comma
 
   has_one_attached :file
 
   validates :file, presence: true
   validate :acceptable_csv, on: :create
 
+  before_save :read_csv
+
   def acceptable_csv
     return unless file.attached?
 
-    if file.blob.byte_size > 20
-      errors.add(:file, "this csv file is too large, it must be under 20MB")
+    if file.blob.byte_size > 5 * 1024 * 1024
+      errors.add(:file, "this csv file is too large, it must be under 5MB")
       return
     end
 
@@ -31,14 +34,16 @@ class CsvImport < ApplicationRecord
     begin
       csv = CSV.read(attachment_changes["file"].attachable.path, col_sep: separator)
 
-      logger = Logger.new(STDOUT)
-      logger.info(csv)
       errors.add(:file, :empty) if csv.count < 1 || (csv.count == 1 && csv[0].count == 1 && csv[0][0] == "")
     rescue CSV::MalformedCSVError => e
       errors.add(:file, e.message)
     end
   end
 
+  def read_csv
+    self.content = JSON.dump(CSV.read(attachment_changes["file"].attachable.path, col_sep: separator_for_database))
+  end
+
   def options_for_separator
     keys = self.class.separators.keys
     keys.map(&:humanize).zip(keys).to_h