/**

* Invalidates the cache for binary files in a staging environment.

*

* This function identifies binary files and clears their cache,

* ensuring that the staging environment receives the latest versions.

*/

async function invalidateStagingCache() {

// Define the staging environment (e.g., a specific environment variable or configuration)

const isStaging = process.env.NODE_ENV === 'staging';

if (!isStaging) {

console.log('Not in staging environment. Cache invalidation skipped.');

return;

}

// Function to identify binary files (customize this based on your file types)

function isBinaryFile(filepath) {

const mimeTypes = ['image/jpeg', 'image/png', 'image/gif', 'application/pdf', 'application/zip', 'text/csv']; //Example binary file types

const ext = filepath.split('.').pop().toLowerCase(); //get file extension

return mimeTypes.includes(`application/${ext}`) || mimeTypes.includes(`image/${ext}`);

}

// Function to get a list of all files in a directory (or specify a specific path)

async function getFiles(dirPath) {

try {

const fs = require('fs').promises; //Use promise based fs for async operations

const files = await fs.readdir(dirPath); //Read directory contents

return files;

} catch (error) {

console.error('Error reading directory:', error);

return [];

}

}

// Get the root directory containing the binary files

const binaryFilesDir = './public/assets'; // Replace with your binary files directory

// Get the list of files in the directory

const allFiles = await getFiles(binaryFilesDir);

// Filter out non-binary files

const binaryFiles = allFiles.filter(file => isBinaryFile(binaryFilesDir + '/' + file));

// Invalidate the cache for each binary file

if (binaryFiles.length > 0) {

console.log(`Found ${binaryFiles.length} binary files to invalidate in staging environment.`);

binaryFiles.forEach(file => {

const filePath = binaryFilesDir + '/' + file;

console.log(`Invalidating cache for: ${filePath}`);

// Implement your cache invalidation logic here.

// This could involve:

// 1. Sending a signal to a cache service (e.g., Redis, Memcached)

// 2. Deleting files from a cache directory

// 3. Using a specific API endpoint to invalidate the cache.

//Example: (replace with your cache invalidation method)

//fetch(`/api/invalidate-cache?file=${filePath}`)

// .then(response => response.json())

// .then(data => {

// if (data.success) {

// console.log(`Cache invalidated successfully for ${filePath}`);

// } else {

// console.error(`Failed to invalidate cache for ${filePath}`);

// }

// })

// .catch(error => {

// console.error(`Error invalidating cache for ${filePath}:`, error);

// });

});

console.log('Cache invalidation complete.');

} else {

console.log('No binary files found in the staging environment directory.');

}

}

// Run the cache invalidation function if it's the main module.

if (require.main === module) {

invalidateStagingCache();

}