feat: add postmortemPostedAt field and update related components for incident tracking

Common/Models/DatabaseModels/Incident.ts

@@ -1031,6 +1031,39 @@ export default class Incident extends BaseModel {
   })
   public showPostmortemOnStatusPage?: boolean = undefined;
 
+  @ColumnAccessControl({
+    create: [
+      Permission.ProjectOwner,
+      Permission.ProjectAdmin,
+      Permission.ProjectMember,
+      Permission.CreateProjectIncident,
+    ],
+    read: [
+      Permission.ProjectOwner,
+      Permission.ProjectAdmin,
+      Permission.ProjectMember,
+      Permission.ReadProjectIncident,
+    ],
+    update: [
+      Permission.ProjectOwner,
+      Permission.ProjectAdmin,
+      Permission.ProjectMember,
+      Permission.EditProjectIncident,
+    ],
+  })
+  @TableColumn({
+    type: TableColumnType.Date,
+    title: "Postmortem Posted At",
+    description:
+      "Timestamp that will be shown alongside the published postmortem on the status page.",
+    required: false,
+  })
+  @Column({
+    type: ColumnType.Date,
+    nullable: true,
+  })
+  public postmortemPostedAt?: Date = undefined;
+
   @ColumnAccessControl({
     create: [
       Permission.ProjectOwner,

Common/Server/API/StatusPageAPI.ts

@@ -1441,6 +1441,7 @@ export default class StatusPageAPI extends BaseAPI<
               description: true,
               _id: true,
               postmortemNote: true,
+              postmortemPostedAt: true,
               showPostmortemOnStatusPage: true,
               postmortemAttachments: {
                 _id: true,
@@ -3332,6 +3333,7 @@ export default class StatusPageAPI extends BaseAPI<
       description: true,
       _id: true,
       postmortemNote: true,
+      postmortemPostedAt: true,
       showPostmortemOnStatusPage: true,
       postmortemAttachments: {
         _id: true,

Dashboard/src/Pages/Incidents/View/Postmortem.tsx

@@ -3,6 +3,7 @@ import PageComponentProps from "../../PageComponentProps";
 import { JSONObject } from "Common/Types/JSON";
 import ObjectID from "Common/Types/ObjectID";
 import { LIMIT_PER_PROJECT } from "Common/Types/Database/LimitMax";
+import OneUptimeDate from "Common/Types/Date";
 import { ButtonStyleType } from "Common/UI/Components/Button/Button";
 import BasicFormModal from "Common/UI/Components/FormModal/BasicFormModal";
 import FormFieldSchemaType from "Common/UI/Components/Forms/Types/FormFieldSchemaType";
@@ -53,6 +54,19 @@ const POSTMORTEM_FORM_FIELDS: Fields<Incident> = [
     description:
       "Upload supporting evidence (images, reports, timelines) that can be shared once the postmortem is public.",
   },
+  {
+    field: {
+      postmortemPostedAt: true,
+    },
+    title: "Postmortem Published At",
+    fieldType: FormFieldSchemaType.DateTime,
+    required: false,
+    description:
+      "Set the posted-on timestamp subscribers will see. This is in " +
+      OneUptimeDate.getCurrentTimezoneString() +
+      ".",
+    placeholder: "Select date and time",
+  },
   {
     field: {
       showPostmortemOnStatusPage: true,
@@ -186,13 +200,6 @@ const IncidentPostmortem: FunctionComponent<
           modelType: Incident,
           id: "model-detail-incident-postmortem-note",
           selectMoreFields: {
-            postmortemAttachments: {
-              _id: true,
-              name: true,
-              fileType: true,
-              createdAt: true,
-            },
-            showPostmortemOnStatusPage: true,
           },
           fields: [
             {
@@ -210,6 +217,14 @@ const IncidentPostmortem: FunctionComponent<
               title: "Visible on Status Page?",
               fieldType: FieldType.Boolean,
             },
+            {
+              field: {
+                postmortemPostedAt: true,
+              },
+              title: "Postmortem Published At",
+              fieldType: FieldType.DateTime,
+              placeholder: "Not scheduled yet.",
+            },
             {
               field: {
                 postmortemAttachments: {

StatusPage/src/Pages/Incidents/Detail.tsx

@@ -209,6 +209,7 @@ export const getIncidentEventItem: GetIncidentEventItemFunction = (
     incident.postmortemNote.trim() !== ""
   ) {
     const postmortemDate: Date =
+      incident.postmortemPostedAt ||
       (incident.updatedAt as Date | undefined) ||
       incident.declaredAt ||
       (incident.createdAt as Date);