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# frozen_string_literal: true
# Get user activity feed for projects common for a user and a logged in user
#
# - current_user: The user viewing the events
# WARNING: does not consider project feature visibility!
# - user: The user for which to load the events
# - params:
# - limit: Number of items that to be returned. Defaults to 20 and limited to 100.
# - offset: The page of events to return
class UserRecentEventsFinder
prepend FinderWithCrossProjectAccess
include FinderMethods
include Gitlab::Allowable
requires_cross_project_access
attr_reader :current_user, :target_user, :params, :event_filter
DEFAULT_LIMIT = 20
MAX_LIMIT = 100
def initialize(current_user, target_user, event_filter, params = {})
@current_user = current_user
@target_user = target_user
@params = params
@event_filter = event_filter || EventFilter.new(EventFilter::ALL)
end
def execute
if target_user.is_a? User
execute_single
else
execute_multi
end
end
private
def execute_single
return Event.none unless can?(current_user, :read_user_profile, target_user)
event_filter.apply_filter(target_events
.with_associations
.limit_recent(limit, params[:offset])
.order_created_desc)
end
# rubocop: disable CodeReuse/ActiveRecord
def execute_optimized_multi(users)
Gitlab::Pagination::Keyset::InOperatorOptimization::QueryBuilder.new(
scope: Event.reorder(id: :desc),
array_scope: User.select(:id).where(id: users),
# Event model has a default scope { reorder(nil) }
# When a relation is rordered and used as a target when merging scope,
# its order takes a precedence and _overwrites_ the original scope's order.
# Thus we have to explicitly provide `reorder` for array_mapping_scope here.
array_mapping_scope: -> (author_id_expression) { Event.where(Event.arel_table[:author_id].eq(author_id_expression)).reorder(id: :desc) },
finder_query: -> (id_expression) { Event.where(Event.arel_table[:id].eq(id_expression)) }
)
.execute
.limit(limit)
.offset(params[:offset] || 0)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def execute_multi
users = []
@target_user.each do |user|
users.append(user.id) if can?(current_user, :read_user_profile, user)
end
return Event.none if users.empty?
if Feature.enabled?(:optimized_followed_users_queries, current_user, default_enabled: :yaml)
query_builder_params = event_filter.in_operator_query_builder_params(users)
Gitlab::Pagination::Keyset::InOperatorOptimization::QueryBuilder
.new(**query_builder_params)
.execute
.limit(limit)
.offset(params[:offset] || 0)
else
if event_filter.filter == EventFilter::ALL
execute_optimized_multi(users)
else
event_filter.apply_filter(Event.where(author: users).limit_recent(limit, params[:offset] || 0))
end
end
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def target_events
Event.where(author: target_user)
end
# rubocop: enable CodeReuse/ActiveRecord
def limit
return DEFAULT_LIMIT unless params[:limit].present?
[params[:limit].to_i, MAX_LIMIT].min
end
end
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