started messages migration to ts

backend/src/services/MessageServices/CreateMessageService.ts

@@ -0,0 +1,24 @@
+import Message from "../../models/Message";
+import FindTicketService from "../TicketServices/FindTicketService";
+
+interface Request {
+  ticketId: string;
+  messageData: Message;
+}
+
+const CreateMessageService = async ({
+  messageData,
+  ticketId
+}: Request): Promise<Message> => {
+  const ticket = await FindTicketService({ where: { id: +ticketId } });
+
+  if (!ticket) {
+    throw new Error("No ticket found with this ID");
+  }
+
+  const message = Message.create({ ...messageData, ticketId });
+
+  return message;
+};
+
+export default CreateMessageService;

backend/src/services/MessageServices/ListMessagesService.ts

@@ -0,0 +1,60 @@
+import { where, fn, col } from "sequelize";
+import Message from "../../models/Message";
+import Ticket from "../../models/Ticket";
+import FindTicketService from "../TicketServices/FindTicketService";
+
+interface Request {
+  ticketId: string;
+  searchParam?: string;
+  pageNumber?: string;
+}
+
+interface Response {
+  messages: Message[];
+  ticket: Ticket;
+  count: number;
+  hasMore: boolean;
+}
+
+const ListMessagesService = async ({
+  searchParam = "",
+  pageNumber = "1",
+  ticketId
+}: Request): Promise<Response> => {
+  const whereCondition = {
+    body: where(
+      fn("LOWER", col("body")),
+      "LIKE",
+      `%${searchParam.toLowerCase()}%`
+    ),
+    ticketId
+  };
+
+  const ticket = await FindTicketService({ where: { id: +ticketId } });
+
+  if (!ticket) {
+    throw new Error("No ticket found with this ID");
+  }
+
+  // await setMessagesAsRead(ticket);
+  const limit = 20;
+  const offset = limit * (+pageNumber - 1);
+
+  const { count, rows: messages } = await Message.findAndCountAll({
+    where: whereCondition,
+    limit,
+    offset,
+    order: [["createdAt", "DESC"]]
+  });
+
+  const hasMore = count > offset + messages.length;
+
+  return {
+    messages: messages.reverse(),
+    ticket,
+    count,
+    hasMore
+  };
+};
+
+export default ListMessagesService;