Basic CORS Proxy

gistfile1.txt

import https from 'https';

export const handler = async (event) => {
    const apiUrl = event.queryStringParameters?.url;

    if (!apiUrl) {
        return {
            statusCode: 400,
            headers: {
                'Access-Control-Allow-Origin': '*',
                'Content-Type': 'application/json',
            },
            body: JSON.stringify({ message: 'Missing query parameter: url' }),
        };
    }

    try {
        const data = await makeApiCall(apiUrl);
        return {
            statusCode: 200,
            headers: {
                'Access-Control-Allow-Origin': '*',
                'Content-Type': 'application/json',
            },
            body: JSON.stringify(data),
        };
    } catch (error) {
        console.error('Error fetching data:', error);
        return {
            statusCode: 500,
            headers: {
                'Access-Control-Allow-Origin': '*',
                'Content-Type': 'application/json',
            },
            body: JSON.stringify({ message: 'Internal Server Error' }),
        };
    }
};

const makeApiCall = (url) => {
    return new Promise((resolve, reject) => {
        https.get(url, (res) => {
            let body = '';

            res.on('data', (chunk) => {
                body += chunk;
            });

            res.on('end', () => {
                resolve(JSON.parse(body));
            });

        }).on('error', (e) => {
            reject(e);
        });
    });
};