Stanko K.R.
42 lines
1.0 KiB
Ruby
42 lines
1.0 KiB
Ruby
class Account::JoinCode < ApplicationRecord
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CODE_LENGTH = 12
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scope :active, -> { where("usage_count < usage_limit") }
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before_validation :generate_code, on: :create, if: -> { code.blank? }
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validates :code, presence: true, uniqueness: true
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validates :usage_limit, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
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validates :usage_count, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
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class << self
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def redeem(code)
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find_by(code: code)&.tap do |join_code|
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if join_code.active?
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join_code.increment!(:usage_count)
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end
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end
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end
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def active?(code)
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active.exists?(code: code)
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end
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end
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def active?
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usage_count < usage_limit
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end
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def reset
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update!(code: generate_code, usage_count: 0)
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end
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private
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def generate_code
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self.code = loop do
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candidate = SecureRandom.base58(CODE_LENGTH).scan(/.{4}/).join("-")
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break candidate unless self.class.exists?(code: candidate)
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end
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end
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end
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