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'use strict';
var minify = require('html-minifier').minify;
function minifyHTML(opts) {
if (!opts) opts = {};
function minifier(req, res, next) {
var sendMinified = function (callback) {
// No callback specified, just minify and send to client.
if (typeof callback === 'undefined') {
return function (err, html) {
if (err) {
return next(err);
}
html = minify(html, opts.htmlMinifier);
res.send(html);
}
} else {
// Custom callback specified by user, use that one
return function (err, html) {
if (html) {
html = minify(html, opts.htmlMinifier);
}
callback(err, html);
}
}
};
if (opts.override === false) {
res.renderMin = function (view, renderOpts, callback) {
this.render(view, renderOpts, sendMinified(callback));
}
} else {
res.oldRender = res.render;
res.render = function (view, renderOpts, callback) {
this.oldRender(view, renderOpts, sendMinified(callback));
};
}
return next();
}
return (minifier);
}
module.exports = minifyHTML;
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