/*

admin-user.js -
file containing the model file for admin user

*/

// imports
const mongoose = require('mongoose');
const uniqueValidator = require('mongoose-unique-validator');
const bcrypt = require('bcrypt');

// admin user database layout
const adminUserSchema = new mongoose.Schema({
	username: {
		type: String,
		required: [true, 'Username is required.'],
		minlength: [1, 'Username must be at-least 1 character.'],
		maxlength: [42, 'Username cannot be more than 42 characters long.'],
		unique: true,
		trim: true
	},
	password: {
		type: String,
		required: [true, 'Password is required.'],
		minlength: [7, 'Password must be at-least 7 characters.'],
		maxlength: [256, 'Password cannot be more than 256 characters long.'],
		trim: true
	},
	role: {
		type: String,
		required: true,
		default: 'admin' 
	}
});

adminUserSchema.plugin(uniqueValidator, {message: '{PATH} already in use.'});

// hashing password
adminUserSchema.pre('save', function(next) {
	// only if modified
	if (!this.isModified('password')) {
		return next();
	}

	// hashing
	bcrypt.hash(this.get('password'), 10, (err, hash) => {
		if (err) {
			return next(err);
		}

		this.set('password', hash);
		next();
	});
});

adminUserSchema.statics.findByUsername = function(username) {
	return this.model('adminUser').findOne({
		username
	});
};

const adminUserModel = mongoose.model('adminUser', adminUserSchema);

module.exports = {
	adminUserModel,
	adminUserSchema
};