added get functions

server/middleware/issueSlips.ts

@@ -0,0 +1,51 @@
+import axios, { AxiosError } from 'axios';
+import serversideConfig from '../../serversideConfig';
+import https from 'https';
+
+let issueSlips = [];
+let errorMsg = '';
+
+export default defineEventHandler(async (event) => {
+
+    if (event.path.startsWith("/api/getAllIssueSlips")) {
+
+        const agent = new https.Agent({
+            rejectUnauthorized: false,
+        });
+
+        const axiosInstance = axios.create({
+            headers: {
+                'Content-Type': 'application/json',
+                Accept: "*",
+            },
+            httpsAgent: agent
+        });
+
+        // get all issue slips object from backend
+        try {
+            let res = await axiosInstance.get(`https://${serversideConfig.url}:${serversideConfig.port}/issueSlips`);
+            issueSlips = res.data;
+        } catch (err) {
+            if (axios.isAxiosError(err)) {
+                const axiosError = err as AxiosError;
+
+                if (axiosError.response) {
+                    // Axios error
+                    console.error(axiosError.response.data.message);
+                    errorMsg = axiosError.response.data.message;
+                } else if (axiosError.request) {
+                    // If error was caused by the request
+                    console.error(axiosError.request);
+                } else {
+                    // Other errors
+                    console.error('Error', axiosError.message);
+                }
+            } else {
+                // No AxiosError
+                console.error('Error', err);
+            }
+        }
+    }
+})
+
+export { issueSlips, errorMsg };