Class: Collavre::Tools::PreviewAttachService

Inherits:
Object
  • Object
show all
Extended by:
T::Sig, ToolMeta
Defined in:
app/services/collavre/tools/preview_attach_service.rb

Overview

Attach a development-preview chip to a topic. AI Agents call this after spinning up ‘./bin/dev` against a worktree so the preview URL and run state surface as a chip in the typing-indicator row. Idempotent by (topic_id, worktree_id).

Instance Method Summary collapse

Instance Method Details

#call(topic_id:, preview_url:, worktree_id:, label: nil) ⇒ Object 



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# File 'app/services/collavre/tools/preview_attach_service.rb', line 36

def call(topic_id:, preview_url:, worktree_id:, label: nil)
  validate_preview_url!(preview_url)

  topic = Collavre::Topic.find(topic_id)
  Collavre::Tools::TopicAuthorizer.authorize_write!(topic)

  refresh_config = ->(c) {
    # Re-attach against the same worktree may carry a fresh URL/label
    # (e.g. port reassignment after a restart). Refresh the persisted
    # config so the chip link goes to the live server, not the dead one
    # — applies both when reactivating a stopped chip and when the chip
    # is still active (:noop), which is the common dev-restart case.
    new_config = c.config.merge(
      "preview_url" => preview_url,
      "preview_state" => "running"
    )
    new_config["label"] = label if label
    c.config = new_config
    # Also refresh the cached chip fields that record_event! seeded on the
    # first attach. The chip partial renders latest_link.presence ||
    # default_link, so without this update a :noop reattach with a new port
    # leaves the chip pointing at the dead URL even though config is fresh.
    # (On :reactivate the subsequent inject_into_topic! would overwrite
    # these via record_event! anyway, so updating here is harmless.)
    c.latest_link = preview_url
    c.latest_label = c.default_label
  }

  channel, status = Collavre::ChannelAttacher.call(
    channel_class: Collavre::PreviewChannel,
    lookup: -> { lookup_channel(topic, worktree_id) },
    create_attrs: {
      topic_id: topic.id,
      config: {
        "worktree_id" => worktree_id,
        "preview_url" => preview_url,
        "preview_state" => "running",
        "label" => label
      }.compact
    },
    on_reactivate: refresh_config,
    on_noop: refresh_config
  )

  # Mirror PR-channel UX: only the first attach (and a true reactivation
  # from stopped/dismissed) announces in the topic. Subsequent idempotent
  # attaches stay silent so frequent restarts do not spam the timeline.
  if status == :created || status == :reactivated
    channel.inject_into_topic!(channel.attached_message)
  end

  {
    ok: true,
    channel_id: channel.id,
    worktree_id: worktree_id,
    preview_url: preview_url,
    status: status
  }
end