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repository.rb
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repository.rb
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# frozen_string_literal: true
module Pragma
module Migration
class Repository
class << self
def sorted_versions
versions.dup
end
def user_version_proc
@user_version_proc ||= begin
lambda do |request|
request.get_header('X-Api-Version')
end
end
end
def migrations_since(request_or_version)
user_version = if request_or_version.is_a?(Rack::Request)
user_version_from(request_or_version)
else
request_or_version
end
@versions.select { |version| version > user_version }.flat_map(&:migrations)
end
def migrations_for(request)
migrations_since(request).select do |migration|
migration.applies_to?(request)
end
end
def migration_active?(migration, request: nil, user_version: nil)
unless request || user_version
fail ArgumentError, 'You must pass one of :request or :user_version'
end
user_version ||= user_version_from(request)
@versions.any? do |version|
version > user_version && version.migration?(migration)
end
end
protected
def user_version_from(request)
user_version = user_version_proc.call(request)
sorted_versions.include?(user_version) ? user_version : sorted_versions.last
end
def version(number, migrations = [])
versions << Version.new(number, migrations)
sort_versions
end
def user_version(&block)
@user_version_proc = block
end
private
def versions
@versions ||= []
end
def sort_versions
@versions = @versions.sort
end
end
end
end
end