Send detection state to each bg script connection

Author: thetarnav

extension/src/content.ts

@@ -14,7 +14,7 @@ import {
     port_on_message, port_post_message_obj, port_post_message,
     window_post_message_obj, window_on_message, window_post_message,
     place_error, place_log,
-    type Message, type Versions,
+    type Message, type Versions, type DetectionState,
 } from './shared.ts'
 
 // @ts-expect-error ?script&module query ensures output in ES module format and only import the script path
@@ -68,6 +68,7 @@ let versions: Versions = {
     extension:       chrome.runtime.getManifest().version,
     client_expected: import.meta.env.EXPECTED_CLIENT,
 }
+let detection: DetectionState | null = null
 
 let connecting = false
 function connect_port() {
@@ -81,6 +82,11 @@ function connect_port() {
         bg_port = new_port
         DEV: {place_log(Place_Name.Content, 'Port connected successfully')}
 
+        // Post detection state to each background port
+        if (detection) {
+            port_post_message(new_port, 'Detected', detection)
+        }
+
         // Post versions to each background port
         port_post_message(new_port, 'Versions', versions)
 
@@ -142,6 +148,20 @@ window_on_message(e => {
 
         break
     }
+    // From Detector_Real_World
+    case 'Detected': {
+        DEV: {place_log(Place_Name.Content, 'Detected', e.data)}
+
+        detection = e.data
+
+        if (bg_port) {
+            port_post_message_obj(bg_port, e)
+        } else {
+            connect_port()
+        }
+
+        break
+    }
     default:
         /* Client -> Background */
         if (bg_port) {