Class: Collavre::Creatives::Reorderer

Inherits:
Object
  • Object
show all
Defined in:
app/services/collavre/creatives/reorderer.rb

Defined Under Namespace

Classes: Error, LinkDropResult

Instance Method Summary collapse

Constructor Details

#initialize(user:) ⇒ Reorderer

Returns a new instance of Reorderer.



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# File 'app/services/collavre/creatives/reorderer.rb', line 8

def initialize(user:)
  @user = user
end

Instance Method Details



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# File 'app/services/collavre/creatives/reorderer.rb', line 58

def link_drop(dragged_id:, target_id:, direction:)
  dragged, target = fetch_creatives(dragged_id, target_id)
  validate_direction!(direction)
  raise Error, "Invalid creatives" unless dragged && target

  origin = dragged.effective_origin
  new_parent = direction == "child" ? target : target.parent

  if new_parent.present?
    origin_descendant_ids = origin.self_and_descendants.pluck(:id)

    new_parent.self_and_ancestors.each do |ancestor|
      ancestor_origin_id = ancestor.origin_id.presence || ancestor.id

      if origin_descendant_ids.include?(ancestor_origin_id)
        raise Error, "Invalid creatives"
      end
    end
  end

  new_creative = nil
  Creative.transaction do
    new_creative = Creative.create!(
      origin_id: origin.id,
      parent: new_parent,
      user: new_parent&.user || user
    )

    siblings = sibling_scope(new_parent)
    siblings.reject! { |s| s.id == new_creative.id }

    if direction == "child"
      siblings << new_creative
    else
      target_index = siblings.index { |s| s.id == target.id } || 0
      insert_index = direction == "up" ? target_index : target_index + 1
      insert_index = [ [ insert_index, 0 ].max, siblings.size ].min
      siblings.insert(insert_index, new_creative)
    end

    resequence!(siblings)
  end

  LinkDropResult.new(new_creative: new_creative, parent: new_parent, direction: direction)
rescue ActiveRecord::RecordInvalid, ActiveRecord::RecordNotSaved => e
  raise Error, e.message
end

#reorder(dragged_id:, target_id:, direction:) ⇒ Object

Raises:



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# File 'app/services/collavre/creatives/reorderer.rb', line 12

def reorder(dragged_id:, target_id:, direction:)
  dragged, target = fetch_creatives(dragged_id, target_id)
  validate_direction!(direction)
  raise Error, "Invalid creatives" unless dragged && target

  if direction == "child"
    reorder_as_child(dragged, target)
  else
    reorder_as_sibling(dragged, target, direction)
  end

  true
end

#reorder_multiple(dragged_ids:, target_id:, direction:) ⇒ Object 



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# File 'app/services/collavre/creatives/reorderer.rb', line 26

def reorder_multiple(dragged_ids:, target_id:, direction:)
  ids = Array(dragged_ids).map(&:presence).compact
  validate_direction!(direction)
  raise Error, "Invalid creatives" if ids.empty?

  target = Creative.find_by(id: target_id)
  raise Error, "Invalid creatives" unless target

  dragged_lookup = Creative.where(id: ids).index_by { |creative| creative.id.to_s }
  ordered_dragged = ids.map { |id| dragged_lookup[id.to_s] }.compact
  raise Error, "Invalid creatives" unless ordered_dragged.size == ids.size

  if ordered_dragged.any? { |creative| creative.id == target.id }
    raise Error, "Invalid creatives"
  end

  target_ancestor_ids = target.ancestors.pluck(:id)
  if ordered_dragged.any? { |creative| target_ancestor_ids.include?(creative.id) }
    raise Error, "Invalid creatives"
  end

  if direction == "child"
    reorder_multiple_as_child(ordered_dragged, target)
  else
    reorder_multiple_as_sibling(ordered_dragged, target, direction)
  end

  true
rescue ActiveRecord::RecordInvalid, ActiveRecord::RecordNotSaved => e
  raise Error, e.message
end