debian-mirror-gitlab/app/services/snippets/count_service.rb

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2020-03-09 13:42:32 +05:30
# frozen_string_literal: true
# Service for calculating visible Snippet counts via one query
# for the given user or project.
#
# Authorisation level checks will be included, ensuring the correct
# counts will be returned for the given user (if any).
#
# Basic usage:
#
# user = User.find(1)
#
# Snippets::CountService.new(user, author: user).execute
# #=> {
# are_public: 1,
# are_internal: 1,
# are_private: 1,
# all: 3
# }
#
# Counts can be scoped to a project:
#
# user = User.find(1)
# project = Project.find(1)
#
# Snippets::CountService.new(user, project: project).execute
# #=> {
# are_public: 1,
# are_internal: 1,
# are_private: 0,
# all: 2
# }
#
# Either a project or an author *must* be supplied.
module Snippets
class CountService
def initialize(current_user, author: nil, project: nil)
if !author && !project
raise(
ArgumentError, 'Must provide either an author or a project'
)
end
@snippets_finder = SnippetsFinder.new(current_user, author: author, project: project)
end
def execute
counts = snippet_counts
return {} unless counts
counts.slice(
:are_public,
:are_private,
:are_internal,
:are_public_or_internal,
:total
)
end
private
# rubocop: disable CodeReuse/ActiveRecord
def snippet_counts
@snippets_finder.execute
.reorder(nil)
.select("
count(case when snippets.visibility_level=#{Snippet::PUBLIC} and snippets.secret is FALSE then 1 else null end) as are_public,
count(case when snippets.visibility_level=#{Snippet::INTERNAL} then 1 else null end) as are_internal,
count(case when snippets.visibility_level=#{Snippet::PRIVATE} then 1 else null end) as are_private,
count(case when visibility_level=#{Snippet::PUBLIC} OR visibility_level=#{Snippet::INTERNAL} then 1 else null end) as are_public_or_internal,
count(*) as total
")
.first
end
# rubocop: enable CodeReuse/ActiveRecord
end
end