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/*
 * Copyright (c) 2015, 2024, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2.0, as published by
 * the Free Software Foundation.
 *
 * This program is designed to work with certain software that is licensed under separate terms, as designated in a particular file or component or in
 * included license documentation. The authors of MySQL hereby grant you an additional permission to link the program and your derivative works with the
 * separately licensed software that they have either included with the program or referenced in the documentation.
 *
 * Without limiting anything contained in the foregoing, this file, which is part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0, for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

package com.mysql.cj.xdevapi;

import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Collectors;

import com.mysql.cj.MysqlxSession;
import com.mysql.cj.exceptions.AssertionFailedException;
import com.mysql.cj.protocol.x.StatementExecuteOk;
import com.mysql.cj.protocol.x.XMessage;
import com.mysql.cj.protocol.x.XMessageBuilder;

public class AddStatementImpl implements AddStatement {

    private MysqlxSession mysqlxSession;
    private String schemaName;
    private String collectionName;
    private List newDocs;
    private boolean upsert = false;

    /* package private */ AddStatementImpl(MysqlxSession mysqlxSession, String schema, String collection, DbDoc newDoc) {
        this.mysqlxSession = mysqlxSession;
        this.schemaName = schema;
        this.collectionName = collection;
        this.newDocs = new ArrayList<>();
        this.newDocs.add(newDoc);
    }

    /* package private */ AddStatementImpl(MysqlxSession mysqlxSession, String schema, String collection, DbDoc[] newDocs) {
        this.mysqlxSession = mysqlxSession;
        this.schemaName = schema;
        this.collectionName = collection;
        this.newDocs = new ArrayList<>();
        this.newDocs.addAll(Arrays.asList(newDocs));
    }

    @Override
    public AddStatement add(String jsonString) {
        try {
            DbDoc doc = JsonParser.parseDoc(new StringReader(jsonString));
            return add(doc);
        } catch (IOException ex) {
            throw AssertionFailedException.shouldNotHappen(ex);
        }
    }

    @Override
    public AddStatement add(DbDoc... docs) {
        this.newDocs.addAll(Arrays.asList(docs));
        return this;
    }

    private List serializeDocs() {
        return this.newDocs.stream().map(DbDoc::toString).collect(Collectors.toList());
    }

    @Override
    public AddResult execute() {
        if (this.newDocs.size() == 0) { // according to X DevAPI specification, this is a no-op. we create an empty Result
            StatementExecuteOk ok = new StatementExecuteOk(0, null, Collections.emptyList(), Collections.emptyList());
            return new AddResultImpl(ok);
        }
        return this.mysqlxSession.query(((XMessageBuilder) this.mysqlxSession.getMessageBuilder()).buildDocInsert(this.schemaName,
                this.collectionName, serializeDocs(), this.upsert), new AddResultBuilder());
    }

    @Override
    public CompletableFuture executeAsync() {
        if (this.newDocs.size() == 0) { // according to X DevAPI specification, this is a no-op. we create an empty Result
            StatementExecuteOk ok = new StatementExecuteOk(0, null, Collections.emptyList(), Collections.emptyList());
            return CompletableFuture.completedFuture(new AddResultImpl(ok));
        }
        return this.mysqlxSession.queryAsync(((XMessageBuilder) this.mysqlxSession.getMessageBuilder()).buildDocInsert(this.schemaName,
                this.collectionName, serializeDocs(), this.upsert), new AddResultBuilder());
    }

    @Override
    public boolean isUpsert() {
        return this.upsert;
    }

    @Override
    public AddStatement setUpsert(boolean upsert) {
        this.upsert = upsert;
        return this;
    }

}