Module: Trailblazer::Activity::DSL::Linear::Helper::Path

Defined in:
lib/trailblazer/activity/dsl/linear/helper/path.rb

Overview

Normalizer logic for do … end.

TODO: it would be cool to be able to connect an (empty) path to specific termini,

this would work if we could add multiple magnetic_to.

Defined Under Namespace

Modules: Normalizer

Class Method Summary collapse

Class Method Details

.convert_path_to_track(track_color: "track_#{rand}", connect_to: nil, before: false, block: nil, terminus: nil, **options) ⇒ Object 



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# File 'lib/trailblazer/activity/dsl/linear/helper/path.rb', line 50

def convert_path_to_track(track_color: "track_#{rand}", connect_to: nil, before: false, block: nil, terminus: nil, **options)
  options =
    if end_task = options[:end_task] # TODO: remove in 2.0.
      Activity::Deprecate.warn Linear::Deprecate.dsl_caller_location,
        %(Using `:end_task` and `:end_id` in Path() is deprecated, use `:terminus` instead. Please refer to https://trailblazer.to/2.1/docs/activity.html#activity-wiring-api-path-end_task-end_id-deprecation)

      options.merge(
        end_task: Activity.End(end_task.to_h[:semantic]),
        end_id:   options[:end_id]
      )
    elsif connect_to
      {}
    elsif terminus
      options.merge(
        end_task: Activity.End(terminus),
        end_id:   "End.#{terminus}"
      )
    else # Path() with End() inside block.
      {}
    end

  # DISCUSS:  if anyone overrides `#step` in the "outer" activity, this won't be applied inside the branch.

  # DISCUSS: use Path::Sequencer::Builder here instead?
  path = Activity::Path(**options, track_name: track_color, &block)

  seq = path.to_h[:sequence]
  # Strip default ends `Start.default` and `End.success` (if present).
  seq = seq[1..-1].reject { |row| row[3][:stop_event] && row.id == "End.success" }

  if connect_to
    seq = connect_for_sequence(seq, connect_to: connect_to)
  end

  # Add the path elements before {End.success}.
  # Termini (or :stop_event) are to be placed after {End.success}.
  adds = seq.collect do |row|
    options = row[3]

    # the terminus of the path goes _after_ {End.success} into the "end group".
    insert_method = options[:stop_event] ? Activity::Adds::Insert.method(:Append) : Activity::Adds::Insert.method(:Prepend)

    insert_target = "End.success" # insert before/after
    insert_target = before if before && connect_to.instance_of?(Linear::Normalizer::OutputTuples::Track) # FIXME: this is a bit hacky, of course!

    {
      row:    row,
      insert: [insert_method, insert_target]
    }
  end

  # Connect the Output() => Track(path_track)
  Linear::Normalizer::OutputTuples::Track.new(track_color, adds, {})
end