TueIT_App/server/middleware/customers.ts

import axios, { AxiosError } from 'axios';
import serversideConfig from '../../serversideConfig';
import https from 'https';

let customers = [];
let customerObject = [];
let selectedCustomersByName = [];
let customerById = {};
let insertId = -1;
let errorMsg = '';

export default defineEventHandler(async (event) => {

    const agent = new https.Agent({
        rejectUnauthorized: false,
    });

    const axiosInstance = axios.create({
        headers: {
            'Content-Type': 'application/json',
            Accept: "*",
        },
        httpsAgent: agent
    });

    if (event.path.startsWith("/api/getAllCustomers")) {
        // get all customers object from backend
        try {
            let res = await axiosInstance.get(`https://${serversideConfig.url}:${serversideConfig.port}/customers`);
            customers = 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) {
                    console.log(err)
                    // 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);
            }
        }
    }

    if (event.path.startsWith("/api/getCustomerByName")) {
        // get customer  object from backend
        let itemId = null;
        const path = event._path;
        const pathSegments = path.split('/');
        itemId = pathSegments[pathSegments.length - 1];

        try {
            let res = await axiosInstance.get(`https://${serversideConfig.url}:${serversideConfig.port}/customerName/${itemId}`);
            customerObject = 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);
            }
        }
    }

    if (event.path.startsWith("/api/getCustomerById")) {
        // get customer  object from backend
        let itemId = null;
        const path = event._path;
        const pathSegments = path.split('/');
        itemId = pathSegments[pathSegments.length - 1];

        try {
            let res = await axiosInstance.get(`https://${serversideConfig.url}:${serversideConfig.port}/customer/${itemId}`);
            customerById = 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);
            }
        }
    }

    if (event.path.startsWith("/api/getSelectedCustomersByName")) {
        // get selected custoemrs object by customer from backend
        let filteredCustomer = null;
        const path = event._path;
        const pathSegments = path.split('/');
        filteredCustomer = pathSegments[pathSegments.length - 1];

        try {
            let res = await axiosInstance.get(`https://${serversideConfig.url}:${serversideConfig.port}/selectedCustomers/${filteredCustomer}`);
            selectedCustomersByName = 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);
            }
        }
    }

    if (event.path.startsWith("/api/updateCustomer")) {
        const body = await readBody(event)
        // update the customer in the backend
        try {
            let res = await axiosInstance.put(`https://${serversideConfig.url}:${serversideConfig.port}/customers`, body);
        } 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) {
                    console.log(err)
                    // 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);
            }
        }
    }

    if (event.path.startsWith("/api/deleteCustomer")) {
        let itemId = null;
        const path = event._path;
        const pathSegments = path.split('/');
        itemId = pathSegments[pathSegments.length - 1];

        // delete the customer in the backend
        try {
            let res = await axiosInstance.delete(`https://${serversideConfig.url}:${serversideConfig.port}/customers/${itemId}`);
        } 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) {
                    console.log(err)
                    // 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);
            }
        }
    }

    if (event.path.startsWith("/api/addCustomer")) {
        const body = await readBody(event)
        // add the customer in the backend
        try {
            let res = await axiosInstance.post(`https://${serversideConfig.url}:${serversideConfig.port}/customers`, body);
            insertId = res.data.insertId
        } 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) {
                    console.log(err)
                    // 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 { customers, selectedCustomersByName, insertId, customerById, customerObject, errorMsg };