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# frozen_string_literal: true
require 'date'
require 'pathname'
# https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page
namespace :gitlab do
namespace :docs do
desc 'GitLab | Docs | Create a doc redirect'
task :redirect, [:old_path, :new_path] do |_, args|
if args.old_path
old_path = args.old_path
else
puts '=> Enter the path of the OLD file:'
old_path = STDIN.gets.chomp
end
if args.new_path
new_path = args.new_path
else
puts '=> Enter the path of the NEW file:'
new_path = STDIN.gets.chomp
end
#
# If the new path is a relative URL, find the relative path between
# the old and new paths.
# The returned path is one level deeper, so remove the leading '../'.
#
unless new_path.start_with?('http')
old_pathname = Pathname.new(old_path)
new_pathname = Pathname.new(new_path)
relative_path = new_pathname.relative_path_from(old_pathname).to_s
(_, *last) = relative_path.split('/')
new_path = last.join('/')
end
#
# - If this is an external URL, move the date 1 year later.
# - If this is a relative URL, move the date 3 months later.
#
date = Time.now.utc.strftime('%Y-%m-%d')
date = new_path.start_with?('http') ? Date.parse(date) >> 12 : Date.parse(date) >> 3
puts "=> Creating new redirect from #{old_path} to #{new_path}"
File.open(old_path, 'w') do |post|
post.puts '---'
post.puts "redirect_to: '#{new_path}'"
post.puts '---'
post.puts
post.puts "This file was moved to [another location](#{new_path})."
post.puts
post.puts "<!-- This redirect file can be deleted after <#{date}>. -->"
post.puts "<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->"
end
end
end
end
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