zeta/modules/route/scope.js

Write node web app in an angular and unexpress way

var swig = require('swig'),
    fs = require('fs'),
    mime = require('mime');

var cache = {},
    cacheRender = {},
    cacheTime = {},
    cacheMime = {};


var render = function(file, json) {
    var self = this,
        path = this._public + file;
    if (cacheTime[file]) {
        fs.stat(path, function(err, stat) {
            if (err)
                self.status(500).end('Server Internal Error: ' + JSON.stringify(err));
            else {
                if (stat.mtime == cacheTime[file]) {
                    self.end(cacheRender[file](json));
                } else {
                    cacheTime[file] = stat.mtime;
                    cacheRender[file] = swig.compileFile(path);
                    self.end(cacheRender[file](json));
                }
            }
        });
    } else {
        fs.stat(path, function(err, stat) {
            if (err)
                self.status(500).end('Server Internal Error: ' + JSON.stringify(err));
            else {
                cacheTime[file] = stat.mtime;
                cacheRender[file] = swig.compileFile(path);
                self.end(cacheRender[file](json));
            }
        });
    }
    return this;
};

var sendFile = function(file) {
    var self = this,
        path = this._public + file;
    if (cacheTime[file]) {
        fs.stat(path, function(err, stat) {
            if (err)
                self.status(500).end('Server Internal Error: ' + JSON.stringify(err));
            else {
                if (stat.mtime == cacheTime[file]) {
                    self.head('Content-Type', cacheMime[file])
                        .end(cache[file]);
                } else {
                    fs.readFile(path, function(err, data) {
                        if (err)
                            self.status(500).end('Server Internal Error: ' + JSON.stringify(err));
                        else {
                            cacheTime[file] = stat.mtime;
                            cacheMime[file] = mime.lookup(path);
                            cache[file] = data;
                            self.head('Content-Type', cacheMime[file])
                                .end(cache[file]);
                        }
                    });
                }
            }
        });
    } else {
        fs.stat(path, function(err, stat) {
            if (err)
                self.status(500).end('Server Internal Error: ' + JSON.stringify(err));
            else {
                fs.readFile(path, function(err, data) {
                    if (err)
                        self.status(500).end('Server Internal Error: ' + JSON.stringify(err));
                    else {
                        cacheTime[file] = stat.mtime;
                        cacheMime[file] = mime.lookup(path);
                        cache[file] = data;
                        self.head('Content-Type', cacheMime[file])
                            .end(cache[file]);
                    }
                });
            }
        });
    }
    return this;
};


var provider = function(k, v) {
    if (arguments.length == 2) {
        this._pvd[k] = v;
        return this;
    } else
        return this._pvd[k];

};

exports.render = render;
exports.sendFile = sendFile;
exports.provider = provider;