/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you 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.elasticsearch.index.query;

import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.script.Template;

import java.io.IOException;
import java.util.Map;

/**
 * Facilitates creating template query requests.
 * */
public class TemplateQueryBuilder extends QueryBuilder {

    /** Template to fill. */
    private Template template;
    /** Parameters to fill the template with. */
    private Map<String, Object> vars;
    /** Template to fill.*/
    private String templateString;

    private ScriptService.ScriptType templateType;

    /**
     * @param template
     *            the template to use for that query.
     * */
    public TemplateQueryBuilder(Template template) {
        this.template = template;
    }

    /**
     * @param template
     *            the template to use for that query.
     * @param vars
     *            the parameters to fill the template with.
     * @deprecated Use {@link #TemplateQueryBuilder(Template)} instead.
     * */
    @Deprecated
    public TemplateQueryBuilder(String template, Map<String, Object> vars) {
        this(template, ScriptService.ScriptType.INLINE, vars);
    }

    /**
     * @param template
     *            the template to use for that query.
     * @param vars
     *            the parameters to fill the template with.
     * @param templateType
     *            what kind of template (INLINE,FILE,ID)
     * @deprecated Use {@link #TemplateQueryBuilder(Template)} instead.
     * */
    @Deprecated
    public TemplateQueryBuilder(String template, ScriptService.ScriptType templateType, Map<String, Object> vars) {
        this.templateString = template;
        this.vars = vars;
        this.templateType = templateType;
    }

    @Override
    protected void doXContent(XContentBuilder builder, Params builderParams) throws IOException {
        builder.field(TemplateQueryParser.NAME);
        if (template == null) {
            new Template(templateString, templateType, null, null, this.vars).toXContent(builder, builderParams);
        } else {
            template.toXContent(builder, builderParams);
        }
    }
}