/*
 * 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.action.update;

import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.support.ActiveShardCount;
import org.elasticsearch.action.support.WriteRequestBuilder;
import org.elasticsearch.action.support.replication.ReplicationRequest;
import org.elasticsearch.action.support.single.instance.InstanceShardOperationRequestBuilder;
import org.elasticsearch.client.ElasticsearchClient;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.VersionType;
import org.elasticsearch.script.Script;

import java.util.Map;

public class UpdateRequestBuilder extends InstanceShardOperationRequestBuilder<UpdateRequest, UpdateResponse, UpdateRequestBuilder>
        implements WriteRequestBuilder<UpdateRequestBuilder> {

    public UpdateRequestBuilder(ElasticsearchClient client, UpdateAction action) {
        super(client, action, new UpdateRequest());
    }

    public UpdateRequestBuilder(ElasticsearchClient client, UpdateAction action, String index, String type, String id) {
        super(client, action, new UpdateRequest(index, type, id));
    }

    /**
     * Sets the type of the indexed document.
     */
    public UpdateRequestBuilder setType(String type) {
        request.type(type);
        return this;
    }

    /**
     * Sets the id of the indexed document.
     */
    public UpdateRequestBuilder setId(String id) {
        request.id(id);
        return this;
    }

    /**
     * Controls the shard routing of the request. Using this value to hash the shard
     * and not the id.
     */
    public UpdateRequestBuilder setRouting(String routing) {
        request.routing(routing);
        return this;
    }

    /**
     * The script to execute. Note, make sure not to send different script each times and instead
     * use script params if possible with the same (automatically compiled) script.
     * <p>
     * The script works with the variable <code>ctx</code>, which is bound to the entry,
     * e.g. <code>ctx._source.mycounter += 1</code>.
     *
     */
    public UpdateRequestBuilder setScript(Script script) {
        request.script(script);
        return this;
    }

    /**
     * Indicate that _source should be returned with every hit, with an
     * "include" and/or "exclude" set which can include simple wildcard
     * elements.
     *
     * @param include
     *            An optional include (optionally wildcarded) pattern to filter
     *            the returned _source
     * @param exclude
     *            An optional exclude (optionally wildcarded) pattern to filter
     *            the returned _source
     */
    public UpdateRequestBuilder setFetchSource(@Nullable String include, @Nullable String exclude) {
        request.fetchSource(include, exclude);
        return this;
    }

    /**
     * Indicate that _source should be returned, with an
     * "include" and/or "exclude" set which can include simple wildcard
     * elements.
     *
     * @param includes
     *            An optional list of include (optionally wildcarded) pattern to
     *            filter the returned _source
     * @param excludes
     *            An optional list of exclude (optionally wildcarded) pattern to
     *            filter the returned _source
     */
    public UpdateRequestBuilder setFetchSource(@Nullable String[] includes, @Nullable String[] excludes) {
        request.fetchSource(includes, excludes);
        return this;
    }

    /**
     * Indicates whether the response should contain the updated _source.
     */
    public UpdateRequestBuilder setFetchSource(boolean fetchSource) {
        request.fetchSource(fetchSource);
        return this;
    }

    /**
     * Sets the number of retries of a version conflict occurs because the document was updated between
     * getting it and updating it. Defaults to 0.
     */
    public UpdateRequestBuilder setRetryOnConflict(int retryOnConflict) {
        request.retryOnConflict(retryOnConflict);
        return this;
    }

    /**
     * Sets the version, which will cause the index operation to only be performed if a matching
     * version exists and no changes happened on the doc since then.
     */
    public UpdateRequestBuilder setVersion(long version) {
        request.version(version);
        return this;
    }

    /**
     * Sets the versioning type. Defaults to {@link org.elasticsearch.index.VersionType#INTERNAL}.
     */
    public UpdateRequestBuilder setVersionType(VersionType versionType) {
        request.versionType(versionType);
        return this;
    }

    /**
     * only perform this update request if the document was last modification was assigned the given
     * sequence number. Must be used in combination with {@link #setIfPrimaryTerm(long)}
     *
     * If the document last modification was assigned a different sequence number a
     * {@link org.elasticsearch.index.engine.VersionConflictEngineException} will be thrown.
     */
    public UpdateRequestBuilder setIfSeqNo(long seqNo) {
        request.setIfSeqNo(seqNo);
        return this;
    }

    /**
     * only perform this update request if the document was last modification was assigned the given
     * primary term. Must be used in combination with {@link #setIfSeqNo(long)}
     *
     * If the document last modification was assigned a different term a
     * {@link org.elasticsearch.index.engine.VersionConflictEngineException} will be thrown.
     */
    public UpdateRequestBuilder setIfPrimaryTerm(long term) {
        request.setIfPrimaryTerm(term);
        return this;
    }

    /**
     * Sets the number of shard copies that must be active before proceeding with the write.
     * See {@link ReplicationRequest#waitForActiveShards(ActiveShardCount)} for details.
     */
    public UpdateRequestBuilder setWaitForActiveShards(ActiveShardCount waitForActiveShards) {
        request.waitForActiveShards(waitForActiveShards);
        return this;
    }

    /**
     * A shortcut for {@link #setWaitForActiveShards(ActiveShardCount)} where the numerical
     * shard count is passed in, instead of having to first call {@link ActiveShardCount#from(int)}
     * to get the ActiveShardCount.
     */
    public UpdateRequestBuilder setWaitForActiveShards(final int waitForActiveShards) {
        return setWaitForActiveShards(ActiveShardCount.from(waitForActiveShards));
    }

    /**
     * Sets the doc to use for updates when a script is not specified.
     */
    public UpdateRequestBuilder setDoc(IndexRequest indexRequest) {
        request.doc(indexRequest);
        return this;
    }

    /**
     * Sets the doc to use for updates when a script is not specified.
     */
    public UpdateRequestBuilder setDoc(XContentBuilder source) {
        request.doc(source);
        return this;
    }

    /**
     * Sets the doc to use for updates when a script is not specified.
     */
    public UpdateRequestBuilder setDoc(Map<String, Object> source) {
        request.doc(source);
        return this;
    }

    /**
     * Sets the doc to use for updates when a script is not specified.
     */
    public UpdateRequestBuilder setDoc(Map<String, Object> source, XContentType contentType) {
        request.doc(source, contentType);
        return this;
    }

    /**
     * Sets the doc to use for updates when a script is not specified.
     */
    public UpdateRequestBuilder setDoc(String source, XContentType xContentType) {
        request.doc(source, xContentType);
        return this;
    }

    /**
     * Sets the doc to use for updates when a script is not specified.
     */
    public UpdateRequestBuilder setDoc(byte[] source, XContentType xContentType) {
        request.doc(source, xContentType);
        return this;
    }

    /**
     * Sets the doc to use for updates when a script is not specified.
     */
    public UpdateRequestBuilder setDoc(byte[] source, int offset, int length, XContentType xContentType) {
        request.doc(source, offset, length, xContentType);
        return this;
    }

    /**
     * Sets the doc to use for updates when a script is not specified, the doc provided
     * is a field and value pairs.
     */
    public UpdateRequestBuilder setDoc(Object... source) {
        request.doc(source);
        return this;
    }

    /**
     * Sets the doc to use for updates when a script is not specified, the doc provided
     * is a field and value pairs.
     */
    public UpdateRequestBuilder setDoc(XContentType xContentType, Object... source) {
        request.doc(xContentType, source);
        return this;
    }

    /**
     * Sets the index request to be used if the document does not exists. Otherwise, a
     * {@link org.elasticsearch.index.engine.DocumentMissingException} is thrown.
     */
    public UpdateRequestBuilder setUpsert(IndexRequest indexRequest) {
        request.upsert(indexRequest);
        return this;
    }

    /**
     * Sets the doc source of the update request to be used when the document does not exists.
     */
    public UpdateRequestBuilder setUpsert(XContentBuilder source) {
        request.upsert(source);
        return this;
    }

    /**
     * Sets the doc source of the update request to be used when the document does not exists.
     */
    public UpdateRequestBuilder setUpsert(Map<String, Object> source) {
        request.upsert(source);
        return this;
    }

    /**
     * Sets the doc source of the update request to be used when the document does not exists.
     */
    public UpdateRequestBuilder setUpsert(Map<String, Object> source, XContentType contentType) {
        request.upsert(source, contentType);
        return this;
    }

    /**
     * Sets the doc source of the update request to be used when the document does not exists.
     */
    public UpdateRequestBuilder setUpsert(String source, XContentType xContentType) {
        request.upsert(source, xContentType);
        return this;
    }

    /**
     * Sets the doc source of the update request to be used when the document does not exists.
     */
    public UpdateRequestBuilder setUpsert(byte[] source, XContentType xContentType) {
        request.upsert(source, xContentType);
        return this;
    }

    /**
     * Sets the doc source of the update request to be used when the document does not exists.
     */
    public UpdateRequestBuilder setUpsert(byte[] source, int offset, int length, XContentType xContentType) {
        request.upsert(source, offset, length, xContentType);
        return this;
    }

    /**
     * Sets the doc source of the update request to be used when the document does not exists. The doc
     * includes field and value pairs.
     */
    public UpdateRequestBuilder setUpsert(Object... source) {
        request.upsert(source);
        return this;
    }

    /**
     * Sets the doc source of the update request to be used when the document does not exists. The doc
     * includes field and value pairs.
     */
    public UpdateRequestBuilder setUpsert(XContentType xContentType, Object... source) {
        request.upsert(xContentType, source);
        return this;
    }

    /**
     * Sets whether the specified doc parameter should be used as upsert document.
     */
    public UpdateRequestBuilder setDocAsUpsert(boolean shouldUpsertDoc) {
        request.docAsUpsert(shouldUpsertDoc);
        return this;
    }

    /**
     * Sets whether to perform extra effort to detect noop updates via docAsUpsert.
     * Defaults to true.
     */
    public UpdateRequestBuilder setDetectNoop(boolean detectNoop) {
        request.detectNoop(detectNoop);
        return this;
    }


    /**
     * Sets whether the script should be run in the case of an insert
     */
    public UpdateRequestBuilder setScriptedUpsert(boolean scriptedUpsert) {
        request.scriptedUpsert(scriptedUpsert);
        return this;
    }

}
