goldilocks.js/lib/app.js

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'use strict';
module.exports = function (opts) {
var finalhandler = require('finalhandler');
var serveStatic = require('serve-static');
var serveIndex = require('serve-index');
var hostsMap = {};
var pathsMap = {};
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var content = opts.content;
var server;
function addServer(hostname) {
if (hostsMap[hostname]) {
return hostsMap[hostname];
}
opts.sites.forEach(function (site) {
if (hostname !== site.name) {
return;
}
// path should exist before it gets to this point
site.path = site.path || site.paths[0];
if (!pathsMap[site.path]) {
pathsMap[site.path] = {
serve: serveStatic(site.path)
// TODO option for dotfiles
, index: serveIndex(site.path)
};
}
hostsMap[hostname] = {
serve: pathsMap[site.path].serve
, index: pathsMap[site.path].index
, app: site.app
};
});
}
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function _reloadWrite(data, enc, cb) {
/*jshint validthis: true */
if (this.headersSent) {
this.__write(data, enc, cb);
return;
}
if (!/html/i.test(this.getHeader('Content-Type'))) {
this.__write(data, enc, cb);
return;
}
if (this.getHeader('Content-Length')) {
this.setHeader('Content-Length', this.getHeader('Content-Length') + this.__my_addLen);
}
this.__write(this.__my_livereload);
this.__write(data, enc, cb);
}
addServer(opts.sites[0].name);
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return function (req, res) {
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if (content && '/' === req.url) {
// res.setHeader('Content-Type', 'application/octet-stream');
res.end(content);
return;
}
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var done = finalhandler(req, res);
var host = req.headers.host;
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var hostname = (host||'').split(':')[0] || opts.sites[0].name;
function serveStatic(server) {
if (server.expressApp) {
server.expressApp(req, res, serveStatic);
return;
}
server.serve(req, res, function (err) {
if (err) { return done(err); }
server.index(req, res, done);
});
}
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if (opts.livereload) {
res.__my_livereload = '<script src="//'
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+ (host || opts.sites[0].name).split(':')[0]
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+ ':35729/livereload.js?snipver=1"></script>';
res.__my_addLen = res.__my_livereload.length;
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// TODO modify prototype instead of each instance?
res.__write = res.write;
res.write = _reloadWrite;
}
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console.log('hostname:', hostname);
addServer(hostname);
server = hostsMap[hostname] || hostsMap[opts.sites[0].name];
serveStatic(server);
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};
};