143 lines
3.7 KiB
Ruby
143 lines
3.7 KiB
Ruby
# frozen_string_literal: true
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class NotesFinder
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FETCH_OVERLAP = 5.seconds
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# Used to filter Notes
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# When used with target_type and target_id this returns notes specifically for the controller
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#
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# Arguments:
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# current_user - which user check authorizations with
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# project - which project to look for notes on
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# params:
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# target_type: string
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# target_id: integer
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# last_fetched_at: time
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# search: string
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#
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def initialize(project, current_user, params = {})
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@project = project
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@current_user = current_user
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@params = params
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end
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def execute
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notes = init_collection
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notes = since_fetch_at(notes)
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notes = notes.with_notes_filter(@params[:notes_filter]) if notes_filter?
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notes.fresh
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end
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def target
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return @target if defined?(@target)
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target_type = @params[:target_type]
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target_id = @params[:target_id]
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return @target = nil unless target_type && target_id
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@target =
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if target_type == "commit"
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if Ability.allowed?(@current_user, :download_code, @project)
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@project.commit(target_id)
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end
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else
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noteables_for_type(target_type).find(target_id)
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end
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end
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private
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def init_collection
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if target
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notes_on_target
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elsif target_type
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notes_of_target_type
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else
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notes_of_any_type
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end
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end
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def notes_of_target_type
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notes = notes_for_type(target_type)
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search(notes)
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end
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def target_type
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@params[:target_type]
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end
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# rubocop: disable CodeReuse/ActiveRecord
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def notes_of_any_type
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types = %w(commit issue merge_request snippet)
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note_relations = types.map { |t| notes_for_type(t) }
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note_relations.map! { |notes| search(notes) }
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UnionFinder.new.find_union(note_relations, Note.includes(:author)) # rubocop: disable CodeReuse/Finder
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end
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# rubocop: enable CodeReuse/ActiveRecord
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def noteables_for_type(noteable_type)
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case noteable_type
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when "issue"
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IssuesFinder.new(@current_user, project_id: @project.id).execute # rubocop: disable CodeReuse/Finder
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when "merge_request"
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MergeRequestsFinder.new(@current_user, project_id: @project.id).execute # rubocop: disable CodeReuse/Finder
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when "snippet", "project_snippet"
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SnippetsFinder.new(@current_user, project: @project).execute # rubocop: disable CodeReuse/Finder
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when "personal_snippet"
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PersonalSnippet.all
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else
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raise "invalid target_type '#{noteable_type}'"
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end
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end
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# rubocop: disable CodeReuse/ActiveRecord
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def notes_for_type(noteable_type)
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if noteable_type == "commit"
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if Ability.allowed?(@current_user, :download_code, @project)
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@project.notes.where(noteable_type: 'Commit')
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else
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Note.none
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end
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else
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finder = noteables_for_type(noteable_type)
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@project.notes.where(noteable_type: finder.base_class.name, noteable_id: finder.reorder(nil))
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end
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end
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# rubocop: enable CodeReuse/ActiveRecord
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def notes_on_target
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if target.respond_to?(:related_notes)
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target.related_notes
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else
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target.notes
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end
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end
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# Searches for notes matching the given query.
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#
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# This method uses ILIKE on PostgreSQL and LIKE on MySQL.
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#
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def search(notes)
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query = @params[:search]
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return notes unless query
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notes.search(query)
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end
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# Notes changed since last fetch
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# Uses overlapping intervals to avoid worrying about race conditions
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def since_fetch_at(notes)
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return notes unless @params[:last_fetched_at]
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# Default to 0 to remain compatible with old clients
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last_fetched_at = Time.at(@params.fetch(:last_fetched_at, 0).to_i)
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notes.updated_after(last_fetched_at - FETCH_OVERLAP)
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end
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def notes_filter?
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@params[:notes_filter].present?
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end
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end
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