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module Validation
# UUID rule
module Rule
class Uuid
class UnknownVersion < StandardError; end
# params can be any of the folowing:
#
# - :version - v4
# v5
# uuid (Any valid uuid)
#
# Example:
#
# {:version => v4}
def initialize(params)
@params = params
end
def params
@params
end
def valid_value?(value)
value.nil? || !!uuid_regex.match(value.to_s)
rescue UnknownVersion
false
end
def error_key
:uuid
end
private
VERSION_REGEX = {
'uuid' => /^[0-9A-F]{8}-[0-9A-F]{4}-[1-5][0-9A-F]{3}-[89AB][0-9A-F]{3}-[0-9A-F]{12}$/i,
'v4' => /^[0-9A-F]{8}-[0-9A-F]{4}-4[0-9A-F]{3}-[89AB][0-9A-F]{3}-[0-9A-F]{12}$/i,
'v5' => /^[0-9A-F]{8}-[0-9A-F]{4}-5[0-9A-F]{3}-[89AB][0-9A-F]{3}-[0-9A-F]{12}$/i,
}
def uuid_regex
VERSION_REGEX.fetch(params[:version]) { raise UnknownVersion }
end
end
end
end
|
