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// The MIT License (MIT)
// Copyright © 2015 AppsLandia. All rights reserved.

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package com.appslandia.plum.base;

import java.util.Collections;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import com.appslandia.common.base.CaseInsensitiveMap;
import com.appslandia.common.base.InitializeObject;
import com.appslandia.common.crypto.PasswordDigester;
import com.appslandia.common.utils.StringUtils;

/**
 *
 * @author Loc Ha
 *
 */
public class MemUserDatabase extends InitializeObject {

	private Map userMap = new CaseInsensitiveMap<>(new ConcurrentHashMap<>());
	final PasswordDigester passwordDigester = new PasswordDigester();

	@Override
	protected void init() throws Exception {
		this.userMap = Collections.unmodifiableMap(this.userMap);
	}

	public Map getUserMap() {
		this.assertNotInitialized();
		return this.userMap;
	}

	public MemUser getUser(String userName) {
		this.assertNotInitialized();
		return this.userMap.get(userName);
	}

	public boolean verifyPassword(String password, String digested) {
		this.assertNotInitialized();
		return this.passwordDigester.verify(password, digested);
	}

	public void addUser(String userName, String password) {
		addUser(userName, password, StringUtils.EMPTY_ARRAY);
	}

	public void addUser(String userName, String password, String[] roles) {
		this.assertNotInitialized();

		MemUser user = new MemUser();
		user.setUserName(userName);
		user.setPassword(this.passwordDigester.digest(password));
		user.setRoles(roles);
		this.userMap.put(userName, user);
	}

	public void addUser(MemUser user) {
		this.assertNotInitialized();

		MemUser copy = user.copy();
		copy.setPassword(this.passwordDigester.digest(copy.getPassword()));
		this.userMap.put(copy.getUserName(), copy);
	}
}