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app.js
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app.js
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var createError = require('http-errors');
var express = require('express');
const mongoose = require('mongoose')
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const session = require("express-session");
const passport = require("passport");
const flash = require('connect-flash');
const dotenv = require('dotenv')
var compression = require('compression');
dotenv.config()
var dev_db_url = 'mongodb+srv://cooluser:coolpassword@cluster0-mbdj7.mongodb.net/local_library?retryWrites=true'
var mongoDB = process.env.MONGODB_URI || dev_db_url;
mongoose.connect(mongoDB, { useNewUrlParser: true , useUnifiedTopology: true});
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'MongoDB connection error:'));
var indexRouter = require('./routes/index');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(session({
secret: "cats",
resave: false,
saveUninitialized: true,
}));
app.use(passport.initialize());
app.use(passport.session());
app.use(flash());
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(compression());
app.disable('x-powered-by');
app.use('/', indexRouter);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
next(createError(404));
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;