Bug 1805717: Introduce search_mode property. r=mak,jteow

Differential Revision: https://phabricator.services.mozilla.com/D164794

browser/components/urlbar/UrlbarController.sys.mjs

@@ -957,6 +957,7 @@ class TelemetryEvent {
         searchWords,
         provider: details.provider,
         searchSource: details.searchSource,
+        searchMode: details.searchMode,
         selectedElement: details.element,
         selIndex: details.selIndex,
         selType: details.selType,
@@ -1040,6 +1041,7 @@ class TelemetryEvent {
       reason,
       searchWords,
       searchSource,
+      searchMode,
       selectedElement,
       selIndex,
       selType,
@@ -1057,14 +1059,17 @@ class TelemetryEvent {
       sap = "urlbar_addonpage";
     }
 
+    searchMode = searchMode ?? this._controller.input.searchMode;
+
     // Distinguish user typed search strings from persisted search terms.
     const interaction = this.#getInteractionType(
       method,
       startEventInfo,
       searchSource,
-      searchWords
+      searchWords,
+      searchMode
     );
-
+    const search_mode = this.#getSearchMode(searchMode);
     const currentResults = queryContext?.results ?? [];
     const numResults = currentResults.length;
     const groups = currentResults
@@ -1080,6 +1085,7 @@ class TelemetryEvent {
       eventInfo = {
         sap,
         interaction,
+        search_mode,
         n_chars: numChars,
         n_words: numWords,
         n_results: numResults,
@@ -1100,6 +1106,7 @@ class TelemetryEvent {
       eventInfo = {
         sap,
         interaction,
+        search_mode,
         n_chars: numChars,
         n_words: numWords,
         n_results: numResults,
@@ -1111,6 +1118,7 @@ class TelemetryEvent {
         reason,
         sap,
         interaction,
+        search_mode,
         n_chars: numChars,
         n_words: numWords,
         n_results: numResults,
@@ -1131,8 +1139,14 @@ class TelemetryEvent {
     }
   }
 
-  #getInteractionType(method, startEventInfo, searchSource, searchWords) {
-    if (this._controller.input.searchMode?.entry === "topsites_newtab") {
+  #getInteractionType(
+    method,
+    startEventInfo,
+    searchSource,
+    searchWords,
+    searchMode
+  ) {
+    if (searchMode?.entry === "topsites_newtab") {
       return "topsite_search";
     }
 
@@ -1171,6 +1185,21 @@ class TelemetryEvent {
     return interaction;
   }
 
+  #getSearchMode(searchMode) {
+    if (!searchMode) {
+      return "";
+    }
+
+    if (searchMode.engineName) {
+      return "search_engine";
+    }
+
+    const source = lazy.UrlbarUtils.LOCAL_SEARCH_MODES.find(
+      m => m.source == searchMode.source
+    )?.telemetryLabel;
+    return source ?? "unknown";
+  }
+
   _parseSearchString(searchString) {
     let numChars = searchString.length.toString();
     let searchWords = searchString