Mike Dalessio
37 lines
843 B
Ruby
37 lines
843 B
Ruby
class Account::JoinCode < ApplicationRecord
|
|
CODE_LENGTH = 12
|
|
USAGE_LIMIT_MAX = 10_000_000_000
|
|
|
|
belongs_to :account
|
|
|
|
validates :usage_limit, numericality: { less_than_or_equal_to: USAGE_LIMIT_MAX, message: "cannot be larger than the population of the planet" }
|
|
|
|
scope :active, -> { where("usage_count < usage_limit") }
|
|
|
|
before_create :generate_code, if: -> { code.blank? }
|
|
|
|
def redeem_if(&block)
|
|
transaction do
|
|
increment!(:usage_count) if block.call(account)
|
|
end
|
|
end
|
|
|
|
def active?
|
|
usage_count < usage_limit
|
|
end
|
|
|
|
def reset
|
|
generate_code
|
|
self.usage_count = 0
|
|
save!
|
|
end
|
|
|
|
private
|
|
def generate_code
|
|
self.code = loop do
|
|
candidate = SecureRandom.base58(CODE_LENGTH).scan(/.{4}/).join("-")
|
|
break candidate unless self.class.exists?(code: candidate)
|
|
end
|
|
end
|
|
end
|