Add the organisation controller

+ Add function to get all organisation
+ Add function to get a specific organisation

src/Controllers/organisation.controller.ts

@@ -0,0 +1,51 @@
+import { Request, Response } from "express";
+import prisma from "../lib/prisma";
+import { DataType, generateInvalidBodyError } from "./common";
+
+export const getAllOrganisations = async (req: Request, res: Response) => {
+  const organisations = await prisma.organisation.findMany({
+    select: { pid: true, name: true, event: { select: { pid: true, name: true } } },
+  });
+
+  res.status(200).json({
+    type: "success",
+    payload: {
+      organisations,
+    },
+  });
+};
+
+interface GetOrganisationQueryParams {
+  pid: string;
+}
+
+export const getOrganisation = async (req: Request<GetOrganisationQueryParams>, res: Response) => {
+  const { pid } = req.params;
+
+  const organisation = await prisma.organisation.findUnique({
+    where: { pid },
+    select: { pid: true, name: true, event: { select: { pid: true, date: true, name: true, description: true } } },
+  });
+
+  if (!organisation) {
+    return res.status(404).json({
+      type: "error",
+      payload: {
+        message: `The organisation with ID '${pid} could not be found'`,
+      },
+    });
+  }
+
+  return res.status(200).json({
+    type: "success",
+    payload: {
+      organisation: {
+        ...organisation,
+        event: {
+          ...organisation.event,
+          _links: [{ rel: "self", type: "GET", href: `/api/event/${organisation.event.pid}` }],
+        },
+      },
+    },
+  });
+};