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class EventsFinder
attr_reader :source, :params, :current_user
# Used to filter Events
#
# Arguments:
# source - which user or project to looks for events on
# current_user - only return events for projects visible to this user
# params:
# action: string
# target_type: string
# before: datetime
# after: datetime
#
def initialize(params = {})
@source = params.delete(:source)
@current_user = params.delete(:current_user)
@params = params
end
def execute
events = source.events
events = by_current_user_access(events)
events = by_action(events)
events = by_target_type(events)
events = by_created_at_before(events)
events = by_created_at_after(events)
events
end
private
def by_current_user_access(events)
events.merge(ProjectsFinder.new(current_user: current_user).execute).
joins(:project)
end
def by_action(events)
return events unless Event::ACTIONS[params[:action]]
events.where(action: Event::ACTIONS[params[:action]])
end
def by_target_type(events)
return events unless Event::TARGET_TYPES[params[:target_type]]
events.where(target_type: Event::TARGET_TYPES[params[:target_type]])
end
def by_created_at_before(events)
return events unless params[:before]
events.where('events.created_at < ?', params[:before].beginning_of_day)
end
def by_created_at_after(events)
return events unless params[:after]
events.where('events.created_at > ?', params[:after].end_of_day)
end
end
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