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/*
 * Copyright (C) 2022 jsonwebtoken.io
 *
 * 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 io.jsonwebtoken.impl.lang;

import io.jsonwebtoken.lang.Assert;

import java.util.Collection;
import java.util.List;
import java.util.Set;

public class DefaultParameterBuilder implements ParameterBuilder {

    private String id;
    private String name;
    private boolean secret;
    private final Class type;
    private Converter converter;
    private Class> collectionType; // will be null if parameter doesn't represent a collection (list or set)

    public DefaultParameterBuilder(Class type) {
        this.type = Assert.notNull(type, "Type cannot be null.");
    }

    @Override
    public ParameterBuilder setId(String id) {
        this.id = id;
        return this;
    }

    @Override
    public ParameterBuilder setName(String name) {
        this.name = name;
        return this;
    }

    @Override
    public ParameterBuilder setSecret(boolean secret) {
        this.secret = secret;
        return this;
    }

    @SuppressWarnings("unchecked")
    @Override
    public ParameterBuilder> list() {
        Class clazz = List.class;
        this.collectionType = (Class>) clazz;
        return (ParameterBuilder>) this;
    }

    @SuppressWarnings("unchecked")
    @Override
    public ParameterBuilder> set() {
        Class clazz = Set.class;
        this.collectionType = (Class>) clazz;
        return (ParameterBuilder>) this;
    }

    @Override
    public ParameterBuilder setConverter(Converter converter) {
        this.converter = converter;
        return this;
    }

    @SuppressWarnings({"rawtypes", "unchecked"})
    @Override
    public Parameter build() {
        Assert.notNull(this.type, "Type must be set.");
        Converter conv = this.converter;
        if (conv == null) {
            conv = Converters.forType(this.type);
        }
        if (this.collectionType != null) {
            conv = List.class.isAssignableFrom(collectionType) ? Converters.forList(conv) : Converters.forSet(conv);
        }
        if (this.secret) {
            conv = new RedactedValueConverter(conv);
        }
        return new DefaultParameter<>(this.id, this.name, this.secret, this.type, this.collectionType, conv);
    }
}