var mongoose = require('mongoose');

var UserSchema = mongoose.Schema({
    username : {
        type : String ,
        unique : true,
        required: true,
        trim : true
    },
    password : {
        type : String,
        trim : true
    }
})

UserSchema.pre('save', function (next) {
    var self = this;
    User.find({name : self.username}, function (err, docs) {
        if (!docs.length){
            next();
        }else{
            console.log('user exists: ',self.username);
            next(new Error("User exists!"));
        }
    });
}) ;


var User = mongoose.model('User' , UserSchema);

module.exports = User;

router.post('/login' , (req , res) => {
    var user = new User({
      username : req.body.username,
      password : req.body.password
    })
    res.send('Clear!')


})