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express_server.js
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express_server.js
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var express = require("express");
var util = require("util");
var verifier = require("./usercheck").verifier;
var taskManager = require("./taskoperation").taskManager;
var configure = require("./configure").configure;
var submithandler = require("./submithandler").submithandler;
var solrutil = require("./solrutil").solrutil;
var exec = require('child_process').exec;
//var form = require('connect-form');
//Is this a good idea to maintain a global open database here? give a shot see where it goes. Enjoy
var mongoer = require("./mongonize");
var mongonizer = new mongoer.mongonizer("127.0.0.1",27017,"hr_system");
var app = express.createServer(
express.logger(),
express.bodyParser({uploadDir:"/tmp"}),
express.cookieParser()
);
app.register(".html", require("ejs"));
app.set("view engine", "ejs");
console.log("Current name:" + __dirname);
app.set("views", __dirname + "/views");
app.configure(
function(){
app.use(app.router);
app.use("/public",express.static(__dirname + "/public"));
app.use("/download",express.static(__dirname+"/download"));
app.use(
express.errorHandler(
{
dumpExceptions: true,
showStack: true
}
)
);
}
);
// Extract the parameter out of the URL
function extractParameter(paramStr){
var pos = paramStr.indexOf("?");
var res = {};
if(pos >= 0){
rest = paramStr.substring(pos+1, paramStr.length);
//console.log("The rest is:"+rest);
rest.split("&").forEach(function(item){
pos = item.indexOf("=");
var key = item.substring(0,pos);
var value = item.substring(pos+1, item.length);
//console.log(key+":"+value);
res[key] = unescape(value);
});
}
return res;
}
app.post("/task/talent", function(req, res){
console.log("request taskid:"+req.body.taskid);
taskManager.fetchTalentInTask(req.body.taskid, function(tasks){
res.render("talentintask.html", {layout:false, "tasks": tasks});
});
});
app.get("/html5", function(req, res){
console.log("The first html5");
res.render("html5.html", {layout:false});
});
//I hope I can remove the cookie by doing this.
app.get("/logout", function(req, res){
var referer = req.headers.referer || "/";
console.log("Referred:"+referer);
res.cookie("token", "logout");
res.redirect(referer);
});
//Will provide a page to add account to database
app.get("/account", function(req, res){
login(req, res, function(req, res, user){
//console.log("User info detail:"+JSON.stringify(user));
if(user.type !== "admin"){
res.cookie("referrer", req.url);
res.redirect("/login");
}
var params = extractParameter(req.url);
var eid = params.eid;
console.log("Parameter:"+JSON.stringify(params));
if(eid){
mongonizer.find({_id:eid}, function(err, record){
var binds = {user:user};
if(err){
console.log("find employee id error:"+eid+", error:"+err);
binds.errorDetail = err;
}
binds.result = record[0];
res.render("account.html",{binds:binds});
},"employee");
}else{
res.render("account.html",{binds:{user:user}});
}
});
});
//Will store the result to database.
app.post("/account", function(req, res){
login(req, res, function(req, res, user){
if(user.type !== "admin"){//not admin, please login as admin, how represent this.
res.cookie("referer", req.url);
res.redirect("/login");
}
var converted = submithandler.convert(configure.accounttemplate, req.body, {creator: user.name, created_time: new Date()});
mongonizer.store(converted, function(err, stored){
var binds = {stored:true, user:user};
if(err){
binds.errorDetail = err;
}
if(stored){
console.log("stored account:"+JSON.stringify(stored));
binds.result = stored;
}
res.render("account.html", {binds:binds});
}, "employee");
});
});
//If have id pass in, it is modify otherwise it is add.
//This style not very intuitive, any way brutally go ahead, let it bite me.
app.get("/modify", function(req, res){
login(req, res, function(req, res, user) {
var params = extractParameter(req.url);
var modify = params.modify;
modify = true;
console.log("parameter:"+ JSON.stringify(params));
var errorDetail = null; //Will put error into the page to tell user what's just happened.
if(params.talentid){
mongonizer.find({"_id":params.talentid}, function(err, record){
if(err){
console.log("Encounter error")
errorDetail = err;
}
var result = null;
if(record && record.length > 0){
console.log("get inside");
result = record[0];
}
res.render("modify.html",{binds:{result:result, errorDetail:errorDetail, modify:modify, user:user}});
},"talents");
}else{
res.render("modify.html",{binds:{modify: modify, user:user}});
}
});
});
//The result of the modication will handled by this Method
app.post("/modify", function(req, res){
login(req, res, function(req, res, user) {
console.log("User:"+JSON.stringify(user));
var params = extractParameter(req.url);
var modify = params.modify;
modify = true;
console.log("Modify parameter:"+ modify);
if(!req.body._id){
console.log("files json:"+JSON.stringify(req.files));
req.body.attached_resume = req.files.upload.name;
var converted = submithandler.convert(configure.converttemplate, req.body, {creator: user.name, created_time: new Date()});
mongonizer.store(converted, function(err, stored){
var binds = {modify: modify, stored: true, user:user};
if(err){
binds.errorDetail = err;
binds.result = converted;
}else{
binds.result = stored;
}
console.log("Stored:"+JSON.stringify(stored));
solrutil.createIndex([stored],function(statusCode, indexResult){
binds.statusCode = statusCode;
binds.indexResult = indexResult;
var cmd = "mv "+req.files.upload.path+" "+configure.uploadStoredDir+req.files.upload.name;
exec(cmd, function(err, stdout, stderr){
console.log("error:"+err+",stdout:"+stdout+",stderr:"+stderr);
res.render("modify.html",{binds:binds});
});
});
},"talents");
}else{
mongonizer.find({"_id":req.body._id},function(err, docs){
var fetched = docs[0];
if(err || !fetched){
console.log("Error:"+err+",fetched:"+JSON.stringify(fetched));
}
fetched = fetched || {};
console.log("For _id:"+req.body._id+",Found:"+JSON.stringify(fetched));
if(!fetched.changer){
fetched.changer = [];
}
fetched.changer.push(user.name);
fetched.updated_time = new Date();
if(!fetched.changer_history){
fetched.changer_history = [];
}
fetched.changer_history.push(new Date());
req.body.attached_resume = req.files.upload.name;
var converted = submithandler.convert(configure.converttemplate, req.body, fetched);
console.log("For converted:"+JSON.stringify(converted));
mongonizer.store(converted, function(err, stored){
var binds = {modify: modify, stored: true, user:user};
if(err){
binds.errorDetail = err;
binds.result = converted;
}else{
binds.result = stored;
}
console.log("Updated:"+JSON.stringify(stored));
solrutil.createIndex([stored],function(statusCode, indexResult){
binds.statusCode = statusCode;
binds.indexResult = indexResult;
var cmd = "mv "+req.files.upload.path+" "+configure.uploadStoredDir+req.files.upload.name;
exec(cmd, function(err, stdout, stderr){
console.log("error:"+err+",stdout:"+stdout+",stderr:"+stderr);
res.render("modify.html",{binds:binds});
});
});
},"talents");
}, "talents");
}
});
});
app.get("/search", search);
//Make it as simple as possible
app.post("/search", search);
function search(req, res){
login(req, res, function(req, res, user){
var param = extractParameter(req.url);
var solrutil = require("./solrutil").solrutil;
var searchText = req.body.searchText;
if(!searchText){
searchText = param.searchText;
}
console.log("Search Text:" + searchText);
var startStr = param.start || "0";
var rowsStr = param.rows || ""+configure.numberPerPage;
var start = parseInt(startStr);
var rows = parseInt(rowsStr);
console.log("searchText:"+searchText+",start:"+start+",rows:"+rows);
if(searchText){
searchText = searchText.trim();
var salaryAsc = "/search?sort=salary%2basc&searchText="+solrutil.encode(searchText);
var salaryDesc= "/search?sort=salary%2bdesc&searchText="+solrutil.encode(searchText);
var ageAsc = "/search?sort=age%2basc&searchText="+solrutil.encode(searchText);
var ageDesc = "/search?sort=age%2bdesc&searchText="+solrutil.encode(searchText);
solrutil.query({q:searchText, start:start, rows:rows}, function(code, data){
//res.send(data);
var resultObj = null;
if(code == 200){
console.log("Returned data:"+data);
resultObj = JSON.parse(data);
}
if(!resultObj){ //If no result for this query.
res.render("search.html", {binds:{user:user}});
return;
}
console.log("ResultObj:"+JSON.stringify(resultObj));
var totalNum = resultObj.response.numFound;
var currentEnd = start + rows;
var nextPage = null;
var prevPage = null;
if(currentEnd < totalNum){
var nextStart = currentEnd;
nextPage = "/search?start="+nextStart+"&rows="+rows+"&searchText="+solrutil.encode(searchText);
console.log("NextPage url:"+nextPage);
}
if(start > 0){
var prevStart = start - rows;
prevPage = "/search?start="+prevStart+"&rows="+rows+"&searchText="+solrutil.encode(searchText);
console.log("PrePage url:"+prevPage);
}
res.render("search.html", {binds:{
user:user,
searchText:searchText,
searchResult:resultObj,
nextPage:nextPage,
prevPage:prevPage,
salaryAsc: salaryAsc,
salaryDesc: salaryDesc,
ageAsc: ageAsc,
ageDesc: ageDesc
}});
});
}else{//Get functionality
res.render("search.html", {binds:{user:user}});
}
});
}
//All the method need to login will call this functionality
//My design is ok, I just pick the wrong method to call.
function login(req,res, next){
var params = extractParameter(req.url);
verifier.authenticate(req, res, function(user){
if(user){
next(req, res, user);
}else{
res.redirect("/login");
}
});
}
//Search will need login to do.
app.get("/", function(req, res){
res.redirect("/search");
});
//Initially, I think the task management is the key, after think about for a while, For a small company of 4 people, the most important thing
//is the search, How to make search as convenient as possible is what you can do. So now the focus is the search page.
app.get("/tasks", function(req, res){
var params = extractParameter(req.url);
//var selectedTaskID = params.taskid;
verifier.fetchuser(req, function(user){
if(user){
taskManager.fetchTask({},
function(tasks){
var taskid = params.taskid || tasks[0]._id;
console.log("Task ID:"+taskid);
taskManager.fetchTalentInTask(taskid, function(talents){
res.render("index.html", {"user": user, "tasks":tasks, "taskid":taskid, "talents":talents });
});
});
}else{
res.redirect("/login");
}
});
//res.redirect("/random");
});
//Do I need to handle referrer or other thing. I have. Let's print the referer
app.get("/login", function(req, res) {
var referrer = req.cookies.referrer || "/";
console.log("referer:"+referrer);
res.render("login.html",{layout:false, binds:{referred: referrer}});
});
app.post("/login", function(req, res){
//util.inspect(req.body);
var user = req.body.email;
var password = req.body.password;
var referredUrl = req.body.referredUrl || "/";
//console.log("cookies:"+JSON.stringify(req.cookie));
console.log(user+":"+password);
verifier.fetchuser(user, password, function(record){
if(record){
//res.cookie("token","MockToken");
console.log("The redirectUrl:"+referredUrl);
res.cookie("token",user+":"+password);
res.redirect(referredUrl);
}else{
res.render("login.html",{layout:false, binds:{error:"登录失败,请重新尝试", referred: referredUrl}}); //Something wrong, login again
}
});
});
app.get("/upload", function(req, res){
res.render("upload.html",{binds:{}});
});
app.post("/upload", function(req, res){
//res.send("Body:"+JSON.stringify(req.headers));
console.log("upload post get called, header:"+JSON.stringify(req.headers));
console.log("upload files:"+JSON.stringify(req.files));
console.log("upload parameters:"+JSON.stringify(req.body));
console.log("upload method quit");
});
app.get("/solr/update/json", function(req, res){
login(req, res, function(req, res, user){
res.send("GET:"+JSON.stringify(req.headers)+",user:"+JSON.stringify(user));
console.log("header:"+JSON.stringify(req.headers));
});
});
app.post("/solr/update/json", function(req, res){
res.send("POST:"+JSON.stringify(req.headers));
//res.send(req.body);
console.log("header:"+JSON.stringify(req.headers)+", body:"+JSON.stringify(req.body));
});
app.get("/random", function(req, res){
res.send("{name:'xie tian',age:34, result: 503}");
util.inspect(req.headers);
});
app.get("/remote", function(req, res){
var httpreq = require('http').request({
host: "127.0.0.1",
port: 8888,
path: "/random",
method: "GET"
}, function(httpresp){
httpresp.on('data', function(chunk) {
console.log("Chunk from server:"+chunk+",original result:"+req.result);
var data = eval(chunk);
for(var pm in data){
console.log(pm+":"+data[pm]);
}
//console.log("JSON not exist:"+JSON.parse);
//req.result = data.result;//what's the purpose of this?
res.render("remote.html",{data: data });
});
});
httpreq.end();
});
app.listen(8888);
console.log("Listen to 8888");