fix: restore report lastMessageText after resolve whisper msg

src/libs/ReportUtils.ts

@@ -7292,6 +7292,36 @@ function findPolicyExpenseChatByPolicyID(policyID: string): OnyxEntry<Report> {
     return Object.values(ReportConnection.getAllReports() ?? {}).find((report) => isPolicyExpenseChat(report) && report?.policyID === policyID);
 }
 
+/**
+ * A function to get the report last message. This is usually used to restore the report message preview in LHN after report actions change.
+ * @param reportID
+ * @param actionsToMerge
+ * @returns containing the calculated message preview data of the report
+ */
+function getReportLastMessage(reportID: string, actionsToMerge?: ReportActions) {
+    let result: Partial<Report> = {
+        lastMessageTranslationKey: '',
+        lastMessageText: '',
+        lastVisibleActionCreated: '',
+    };
+
+    const {lastMessageText = '', lastMessageTranslationKey = ''} = getLastVisibleMessage(reportID, actionsToMerge);
+
+    if (lastMessageText || lastMessageTranslationKey) {
+        const lastVisibleAction = ReportActionsUtils.getLastVisibleAction(reportID, actionsToMerge);
+        const lastVisibleActionCreated = lastVisibleAction?.created;
+        const lastActorAccountID = lastVisibleAction?.actorAccountID;
+        result = {
+            lastMessageTranslationKey,
+            lastMessageText,
+            lastVisibleActionCreated,
+            lastActorAccountID,
+        };
+    }
+
+    return result;
+}
+
 function getSourceIDFromReportAction(reportAction: OnyxEntry<ReportAction>): string {
     const message = Array.isArray(reportAction?.message) ? reportAction?.message?.at(-1) ?? null : reportAction?.message ?? null;
     const html = message?.html ?? '';
@@ -7613,6 +7643,7 @@ export {
     canBeExported,
     isExported,
     hasOnlyNonReimbursableTransactions,
+    getReportLastMessage,
     getMostRecentlyVisitedReport,
     getSourceIDFromReportAction,
     getReport,

src/libs/actions/Report.ts

@@ -3700,6 +3700,24 @@ function resolveActionableMentionWhisper(reportId: string, reportAction: OnyxEnt
         resolution,
     };
 
+    const optimisticReportActions = {
+        [reportAction.reportActionID]: {
+            originalMessage: {
+                resolution,
+            },
+        },
+    };
+
+    const reportUpdateDataWithPreviousLastMessage = ReportUtils.getReportLastMessage(reportId, optimisticReportActions as ReportActions);
+
+    const report = ReportConnection.getAllReports()?.[`${ONYXKEYS.COLLECTION.REPORT}${reportId}`];
+    const reportUpdateDataWithCurrentLastMessage = {
+        lastMessageTranslationKey: report?.lastMessageTranslationKey,
+        lastMessageText: report?.lastMessageText,
+        lastVisibleActionCreated: report?.lastVisibleActionCreated,
+        lastActorAccountID: report?.lastActorAccountID,
+    };
+
     const optimisticData: OnyxUpdate[] = [
         {
             onyxMethod: Onyx.METHOD.MERGE,
@@ -3713,6 +3731,11 @@ function resolveActionableMentionWhisper(reportId: string, reportAction: OnyxEnt
                 },
             },
         },
+        {
+            onyxMethod: Onyx.METHOD.MERGE,
+            key: `${ONYXKEYS.COLLECTION.REPORT}${reportId}`,
+            value: reportUpdateDataWithPreviousLastMessage,
+        },
     ];
 
     const failureData: OnyxUpdate[] = [
@@ -3728,6 +3751,11 @@ function resolveActionableMentionWhisper(reportId: string, reportAction: OnyxEnt
                 },
             },
         },
+        {
+            onyxMethod: Onyx.METHOD.MERGE,
+            key: `${ONYXKEYS.COLLECTION.REPORT}${reportId}`,
+            value: reportUpdateDataWithCurrentLastMessage, // revert back to the current report last message data in case of failure
+        },
     ];
 
     const parameters: ResolveActionableMentionWhisperParams = {
@@ -3747,6 +3775,24 @@ function resolveActionableReportMentionWhisper(
         return;
     }
 
+    const optimisticReportActions = {
+        [reportAction.reportActionID]: {
+            originalMessage: {
+                resolution,
+            },
+        },
+    };
+
+    const reportUpdateDataWithPreviousLastMessage = ReportUtils.getReportLastMessage(reportId, optimisticReportActions as ReportActions);
+
+    const report = ReportConnection.getAllReports()?.[`${ONYXKEYS.COLLECTION.REPORT}${reportId}`];
+    const reportUpdateDataWithCurrentLastMessage = {
+        lastMessageTranslationKey: report?.lastMessageTranslationKey,
+        lastMessageText: report?.lastMessageText,
+        lastVisibleActionCreated: report?.lastVisibleActionCreated,
+        lastActorAccountID: report?.lastActorAccountID,
+    };
+
     const optimisticData: OnyxUpdate[] = [
         {
             onyxMethod: Onyx.METHOD.MERGE,
@@ -3757,7 +3803,12 @@ function resolveActionableReportMentionWhisper(
                         resolution,
                     },
                 },
-            },
+            } as ReportActions,
+        },
+        {
+            onyxMethod: Onyx.METHOD.MERGE,
+            key: `${ONYXKEYS.COLLECTION.REPORT}${reportId}`,
+            value: reportUpdateDataWithPreviousLastMessage,
         },
     ];
 
@@ -3773,6 +3824,11 @@ function resolveActionableReportMentionWhisper(
                 },
             },
         },
+        {
+            onyxMethod: Onyx.METHOD.MERGE,
+            key: `${ONYXKEYS.COLLECTION.REPORT}${reportId}`,
+            value: reportUpdateDataWithCurrentLastMessage, // revert back to the current report last message data in case of failure
+        },
     ];
 
     const parameters: ResolveActionableReportMentionWhisperParams = {