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Contents
require_dependency "renalware/snippets"
module Renalware
module Snippets
class DuplicateSnippetTitleGenerator
MAX_ATTEMPTS = 100
attr_reader :snippet, :title_suffix
delegate :valid?, to: :snippet
def initialize(snippet, title_suffix: "[CLONED]")
@snippet = snippet
@title_suffix = title_suffix
end
def call
create_unique_title_for_cloned_snippet
end
private
# The snippet may have been cloned before so the title e.g. "Some title [CLONED]" may have
# been taken. In this case keep adding numbers on to the end e.g. "Some title [CLONED] (1)"
# until we find a unique title.
def create_unique_title_for_cloned_snippet
original_title = snippet.title.dup
while_conserving_original_title do
(0..MAX_ATTEMPTS).each do |attempt|
snippet.title = build_snippet_title(original_title, attempt)
break if valid?
end
report_error unless valid?
end
end
def while_conserving_original_title
original_title = snippet.title
yield
new_title = snippet.title
snippet.title = original_title
new_title
end
def build_snippet_title(original_title, current_attempt_number = 0)
title = "#{original_title} #{title_suffix}"
title += " (#{current_attempt_number})" if current_attempt_number > 0
title
end
class InvalidSnippetTitleError < ::StandardError
end
def report_error
raise InvalidSnippetTitleError,
"Tried #{MAX_ATTEMPTS} times to construct a new snippet title. Got to "\
"'#{snippet.title}' but the title is still not unique."
end
end
end
end
Version data entries
28 entries across 28 versions & 1 rubygems