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/*
 * Copyright 2017 dmfs GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.dmfs.rfc3986.authorities;

import org.dmfs.rfc3986.Authority;
import org.dmfs.rfc3986.UriEncoded;
import org.dmfs.rfc3986.utils.Optional;


/**
 * @author Marten Gajda
 */
public final class Text implements CharSequence
{
    private final Authority mDelegate;
    private String mText;


    public Text(Authority delegate)
    {
        mDelegate = delegate;
    }


    @Override
    public int length()
    {
        return toString().length();
    }


    @Override
    public char charAt(int i)
    {
        return toString().charAt(i);
    }


    @Override
    public CharSequence subSequence(int i, int i1)
    {
        return toString().subSequence(i, i1);
    }


    @Override
    public String toString()
    {
        if (mText == null)
        {
            StringBuilder builder = new StringBuilder(64);
            Optional mUserInfo = mDelegate.userInfo();
            if (mUserInfo.isPresent())
            {
                builder.append(mUserInfo.value());
                builder.append('@');
            }
            builder.append(mDelegate.host());
            int port = mDelegate.port();
            if (port >= 0)
            {
                builder.append(':');
                builder.append(String.valueOf(port));
            }
            mText = builder.toString();
        }
        return mText;
    }
}