♻️ Reorganize index management on worker code (#6477)

* ♻️ Factor index management out of app.worker.impl

* 💄 Fix silly spacing

* 💄 Lint

frontend/src/app/main/data/changes.cljs

@@ -13,7 +13,7 @@
    [app.common.types.shape-tree :as ctst]
    [app.common.uuid :as uuid]
    [app.main.data.helpers :as dsh]
-   [app.main.worker :as uw]
+   [app.main.worker :as mw]
    [app.util.time :as dt]
    [beicon.v2.core :as rx]
    [potok.v2.core :as ptk]))
@@ -53,7 +53,7 @@
         (->> (rx/from changes)
              (rx/merge-map (fn [[page-id changes]]
                              (log/debug :hint "update-indexes" :page-id page-id :changes (count changes))
-                             (uw/ask! {:cmd :update-page-index
+                             (mw/ask! {:cmd :index/update-page-index
                                        :page-id page-id
                                        :changes changes})))
              (rx/catch (fn [cause]

frontend/src/app/main/data/workspace.cljs

@@ -85,7 +85,7 @@
    [app.main.repo :as rp]
    [app.main.router :as rt]
    [app.main.streams :as ms]
-   [app.main.worker :as uw]
+   [app.main.worker :as mw]
    [app.render-wasm :as wasm]
    [app.render-wasm.api :as api]
    [app.util.code-gen.style-css :as css]
@@ -165,7 +165,7 @@
                (rx/mapcat
                 (fn [[id page]]
                   (let [page (update page :objects ctst/start-page-index)]
-                    (->> (uw/ask! {:cmd :initialize-page-index :page page})
+                    (->> (mw/ask! {:cmd :index/initialize-page-index :page page})
                          (rx/map (fn [_] [id page]))))))
                (rx/reduce conj {})
                (rx/map (fn [pages-index]

frontend/src/app/worker.cljs

@@ -13,6 +13,7 @@
    [app.worker.export]
    [app.worker.impl :as impl]
    [app.worker.import]
+   [app.worker.index]
    [app.worker.messages :as wm]
    [app.worker.selection]
    [app.worker.snaps]

frontend/src/app/worker/impl.cljs

@@ -5,19 +5,15 @@
 ;; Copyright (c) KALEIDOS INC
 
 (ns app.worker.impl
+  "Dispatcher for messages received from the main thread."
   (:require
-   [app.common.data.macros :as dm]
-   [app.common.files.changes :as ch]
    [app.common.logging :as log]
-   [app.config :as cf]
-   [okulary.core :as l]))
+   [app.config :as cf]))
 
 (log/set-level! :info)
 
 (enable-console-print!)
 
-(defonce state (l/atom {:pages-index {}}))
-
 ;; --- Handler
 
 (defmulti handler :cmd)
@@ -30,25 +26,6 @@
   [message]
   message)
 
-(defmethod handler :initialize-page-index
-  [{:keys [page] :as message}]
-  (swap! state update :pages-index assoc (:id page) page)
-  (handler (assoc message :cmd :selection/initialize-page-index))
-  (handler (assoc message :cmd :snaps/initialize-page-index)))
-
-(defmethod handler :update-page-index
-  [{:keys [page-id changes] :as message}]
-
-  (let [old-page (dm/get-in @state [:pages-index page-id])
-        new-page (-> state
-                     (swap! ch/process-changes changes false)
-                     (dm/get-in [:pages-index page-id]))
-        message (assoc message
-                       :old-page old-page
-                       :new-page new-page)]
-    (handler (assoc message :cmd :selection/update-page-index))
-    (handler (assoc message :cmd :snaps/update-page-index))))
-
 (defmethod handler :configure
   [{:keys [config]}]
   (log/info :hint "configure worker" :keys (keys config))

frontend/src/app/worker/index.cljs

@@ -0,0 +1,34 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.worker.index
+  "Page index management within the worker."
+  (:require
+   [app.common.data.macros :as dm]
+   [app.common.files.changes :as ch]
+   [app.worker.impl :as impl]
+   [okulary.core :as l]))
+
+(defonce state (l/atom {:pages-index {}}))
+
+(defmethod impl/handler :index/initialize-page-index
+  [{:keys [page] :as message}]
+  (swap! state update :pages-index assoc (:id page) page)
+  (impl/handler (assoc message :cmd :selection/initialize-page-index))
+  (impl/handler (assoc message :cmd :snaps/initialize-page-index)))
+
+(defmethod impl/handler :index/update-page-index
+  [{:keys [page-id changes] :as message}]
+
+  (let [old-page (dm/get-in @state [:pages-index page-id])
+        new-page (-> state
+                     (swap! ch/process-changes changes false)
+                     (dm/get-in [:pages-index page-id]))
+        message (assoc message
+                       :old-page old-page
+                       :new-page new-page)]
+    (impl/handler (assoc message :cmd :selection/update-page-index))
+    (impl/handler (assoc message :cmd :snaps/update-page-index))))