Function purge

scripts/cache.js:622–695

()

}

function purge()
{
	if(!data) data = storage.get('cache') || {};

	let time = app.time();

	let cacheMaxSize = config.cacheMaxSize * 1000 * 1000;
	let cacheMaxOld = config.cacheMaxOld * 60 * 60 * 24;

	let dataArray = [];

	// Remove not usage files
	for(let sha in data)
	{
		if(time - data[sha].lastAccess > cacheMaxOld)
		{
			deleteInCacheSha(sha);
		}
		else
		{
			dataArray.push({
				sha: sha,
				lastAccess: data[sha].lastAccess,
			});
		}
	}

	// Remove unreferenced files
	let files = fs.readdirSync(cache.folder);

	for(let i = 0, len = files.length; i < len; i++)
	{
		let file = files[i];

		let sha = extract(/^([a-z0-9]+)\.jpg/iu, file, 1);

		if(sha && !data[sha])
			deleteInCacheSha(sha);
	}

	// Remove if exede cache max size
	let cacheSize = fileManager.dirSizeSync(cache.folder);

	if(cacheSize > cacheMaxSize)
	{
		let cacheMaxSizeMargin = cacheMaxSize * 0.8; // Remove 20% if cache exceeds maximum size to avoid running this every time

		dataArray.sort(function(a, b) {

			if(a.lastAccess === b.lastAccess)
				return 0;

			return a.lastAccess > b.lastAccess ? 1 : -1;

		});

		for(let i = 0, len = dataArray.length; i < len; i++)
		{