算法评测平台前端。
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/*
* This file is part of SYZOJ.
*
* Copyright (c) 2016 Menci <huanghaorui301@gmail.com>
*
* SYZOJ is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* SYZOJ is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with SYZOJ. If not, see <http://www.gnu.org/licenses/>.
*/
'use strict';
let fs = require('fs'),
path = require('path');
global.syzoj = {
rootDir: __dirname,
config: require('./config.json'),
models: [],
modules: [],
db: null,
log(obj) {
console.log(obj);
},
async run() {
let Express = require('express');
global.app = Express();
syzoj.production = app.get('env') === 'production';
app.listen(parseInt(syzoj.config.port), syzoj.config.hostname, () => {
this.log(`SYZOJ is listening on ${syzoj.config.hostname}:${parseInt(syzoj.config.port)}...`);
});
// Set assets dir
app.use(Express.static(__dirname + '/static'));
// Set template engine ejs
app.set('view engine', 'ejs');
// Use body parser
let bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({
extended: true,
limit: '50mb'
}));
app.use(bodyParser.json({ limit: '50mb' }));
// Use cookie parser
app.use(require('cookie-parser')());
let multer = require('multer');
app.multer = multer({ dest: syzoj.utils.resolvePath(syzoj.config.upload_dir, 'tmp') });
// This should before load api_v2, to init the `res.locals.user`
this.loadHooks();
// Trick to bypass CSRF for APIv2
app.use((() => {
let router = new Express.Router();
app.apiRouter = router;
require('./modules/api_v2');
return router;
})());
let csurf = require('csurf');
app.use(csurf({ cookie: true }));
await this.connectDatabase();
this.loadModules();
},
async connectDatabase() {
let Sequelize = require('sequelize');
this.db = new Sequelize(this.config.db.database, this.config.db.username, this.config.db.password, {
host: this.config.db.host,
dialect: this.config.db.dialect,
storage: this.config.db.storage ? this.utils.resolvePath(this.config.db.storage) : null,
logging: syzoj.production ? false : syzoj.log
});
global.Promise = Sequelize.Promise;
this.db.countQuery = async (sql, options) => (await this.db.query(`SELECT COUNT(*) FROM (${sql}) AS \`__tmp_table\``, options))[0][0]['COUNT(*)'];
this.loadModels();
},
loadModules() {
fs.readdir('./modules/', (err, files) => {
if (err) {
this.log(err);
return;
}
files.filter((file) => file.endsWith('.js'))
.forEach((file) => this.modules.push(require(`./modules/${file}`)));
});
},
loadModels() {
fs.readdir('./models/', (err, files) => {
if (err) {
this.log(err);
return;
}
files.filter((file) => file.endsWith('.js'))
.forEach((file) => require(`./models/${file}`));
this.db.sync();
});
},
lib(name) {
return require(`./libs/${name}`);
},
model(name) {
return require(`./models/${name}`);
},
loadHooks() {
let Session = require('express-session');
let FileStore = require('session-file-store')(Session);
let sessionConfig = {
secret: this.config.session_secret,
cookie: {},
rolling: true,
saveUninitialized: true,
resave: true,
store: new FileStore
};
if (syzoj.production) {
app.set('trust proxy', 1);
sessionConfig.cookie.secure = true;
}
app.use(Session(sessionConfig));
app.use((req, res, next) => {
// req.session.user_id = 1;
let User = syzoj.model('user');
if (req.session.user_id) {
User.fromID(req.session.user_id).then((user) => {
res.locals.user = user;
next();
}).catch((err) => {
this.log(err);
res.locals.user = null;
req.session.user_id = null;
next();
})
} else {
if (req.cookies.login) {
let obj;
try {
obj = JSON.parse(req.cookies.login);
User.findOne({
where: {
username: obj[0],
password: obj[1]
}
}).then(user => {
if (!user) throw null;
res.locals.user = user;
req.session.user_id = user.id;
next();
}).catch(err => {
console.log(err);
res.locals.user = null;
req.session.user_id = null;
next();
});
} catch (e) {
res.locals.user = null;
req.session.user_id = null;
next();
}
} else {
res.locals.user = null;
req.session.user_id = null;
next();
}
}
});
// Active item on navigator bar
app.use((req, res, next) => {
res.locals.active = req.path.split('/')[1];
next();
});
app.use((req, res, next) => {
res.locals.req = req;
res.locals.res = res;
next();
});
},
utils: require('./utility')
};
syzoj.run();