add upgrader for compatibility with older data versions

src/Upgrade/v1.ts

@@ -0,0 +1,101 @@
+import {
+  ChatMessage,
+  ChatObject,
+  MessageObjectContent,
+} from "../Model/chatTypes";
+
+// ChatMessage
+export interface ChatMessageV1 {
+  channel: string;
+  sender: string;
+  body: string;
+  isoDate: string;
+
+  messageObjectString?: string;
+}
+
+export function upgradeMessageFromV1(
+  chatMessageV1: ChatMessageV1
+): ChatMessage {
+  const { channel, sender, body, isoDate, messageObjectString } = chatMessageV1;
+  return {
+    dataVersion: "v2",
+
+    channel,
+    sender,
+    body,
+    dateSent: isoDate,
+    stringifiedObject: messageObjectString,
+  };
+}
+
+// MessageObject
+export interface MessageObjectV1 {
+  id: string;
+  title: string;
+  contentVersions: { [key: string]: MessageObjectContentV1 };
+}
+
+export function upgradeMessageObjectFromV1(
+  messageObjectV1: MessageObjectV1
+): ChatObject {
+  const { id, title, contentVersions } = messageObjectV1;
+
+  const upgradedContentVersions: { [key: string]: MessageObjectContent } = {};
+  for (const entry of Object.entries(contentVersions)) {
+    const [id, object] = entry;
+    const upgraded = upgradeMessageObjectContentFromV1(object);
+    upgradedContentVersions[id] = upgraded;
+  }
+
+  return {
+    dataVersion: "v2",
+
+    id,
+    title,
+
+    contentVersions: upgradedContentVersions,
+  };
+}
+
+// MessageObjectContent
+export interface MessageObjectContentV1 {
+  isoDateVersionCreated: string;
+  id: string;
+
+  noteContent?: string;
+  priority?: number;
+  categoryName?: string;
+  status?: string;
+  date?: string;
+  time?: string;
+}
+
+export function upgradeMessageObjectContentFromV1(
+  messageObjectContentV1: MessageObjectContentV1
+): MessageObjectContent {
+  const {
+    isoDateVersionCreated,
+    id,
+    noteContent,
+    priority,
+    categoryName,
+    status,
+    date,
+    time,
+  } = messageObjectContentV1;
+
+  return {
+    dataVersion: "v2",
+
+    id,
+    creationDate: isoDateVersionCreated,
+
+    noteText: noteContent,
+    priority,
+    category: categoryName,
+    status,
+    date,
+    time,
+  };
+}