postmailer/local-files.js

HTTP POST -> SMTP proxy, as Express middleware

var fse = require('fs-extra'), path = require('path');
var mime = require('mime');

function saveToLocalFile(hub, options) {
	options = options || options;
	if (typeof options === 'string') options = {dir: options};
	var postDir = options.dir || 'posts/';

	hub.handle('mail', function (mail, next) {
		var hub = this;
		var fromAddr = mail.headers['from'];
		if (!fromAddr) return;

		fromAddr = fromAddr.replace(/.*</, '').replace(/>.*/, '');
	    var received = (new Date()).toISOString().substring(0, 19).replace(/[^a-z0-9]/ig, '-');
	    var filename = received + ' ' + encodeURIComponent(fromAddr);

		if (mail.filename) {
			filename += mail.filename.replace(/[^a-z0-9\-\_\ \(\)\[\]\.]/i, '_');
		} else {
			filename += '.' + mime.extension(mail.headers['content-type'] || 'text/plain');
		}
		filename = path.join(postDir, filename);
		hub.emit('log', 'saving to ' + filename);

		if (typeof mail.message === 'string' || Buffer.isBuffer(mail.message)) {
			fse.outputFile(filename, mail.message, function (error) {
				if (error) {
					hub.emit('error', error);
					return next();
				}
				// Replace stream with file stream
				mail.message = fse.createReadStream(filename);
				next();
			});
		} else {
			var stream = fse.createOutputStream(filename);
	    	mail.message.pipe(stream);
			stream.on('error', function (error) {
				hub.emit('error', error);
				next();
			});
			stream.on('close', function () {
				// Replace stream with file stream
				mail.message = fse.createReadStream(filename);
				next();
			});
		}
	});
}

module.exports = saveToLocalFile;