/*
 * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * SPDX-License-Identifier: MIT-0
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the "Software"), to deal in the Software
 * without restriction, including without limitation the rights to use, copy, modify,
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package software.amazon.qldb.tutorial;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.amazon.ion.IonValue;

import software.amazon.qldb.TransactionExecutor;
import software.amazon.qldb.tutorial.model.DriversLicense;
import software.amazon.qldb.tutorial.model.SampleData;
import software.amazon.qldb.tutorial.model.VehicleRegistration;

/**
 * Insert documents into a table in a QLDB ledger.
 *
 * This code expects that you have AWS credentials setup per:
 * http://docs.aws.amazon.com/java-sdk/latest/developer-guide/setup-credentials.html
 */
public final class InsertDocument {
    public static final Logger log = LoggerFactory.getLogger(InsertDocument.class);

    private InsertDocument() { }

    /**
     * Insert the given list of documents into the specified table and return the document IDs of the inserted documents.
     *
     * @param txn
     *              The {@link TransactionExecutor} for lambda execute.
     * @param tableName
     *              Name of the table to insert documents into.
     * @param documents
     *              List of documents to insert into the specified table.
     * @return a list of document IDs.
     * @throws IllegalStateException if failed to convert documents into an {@link IonValue}.
     */
    public static List<String> insertDocuments(final TransactionExecutor txn, final String tableName,
                                               final List documents) {
        log.info("Inserting some documents in the {} table...", tableName);
        try {
            final String query = String.format("INSERT INTO %s ?", tableName);
            final IonValue ionDocuments = Constants.MAPPER.writeValueAsIonValue(documents);

            return SampleData.getDocumentIdsFromDmlResult(txn.execute(query, ionDocuments));
        } catch (IOException ioe) {
            throw new IllegalStateException(ioe);
        }
    }

    /**
     * Update PersonIds in driver's licenses and in vehicle registrations using document IDs.
     *
     * @param documentIds
     *              List of document IDs representing the PersonIds in DriversLicense and PrimaryOwners in VehicleRegistration.
     * @param licenses
     *              List of driver's licenses to update.
     * @param registrations
     *              List of registrations to update.
     */
    public static void updatePersonId(final List<String> documentIds, final List<DriversLicense> licenses,
                                      final List<VehicleRegistration> registrations) {
        for (int i = 0; i < documentIds.size(); ++i) {
            DriversLicense license = SampleData.LICENSES.get(i);
            VehicleRegistration registration = SampleData.REGISTRATIONS.get(i);
            licenses.add(SampleData.updatePersonIdDriversLicense(license, documentIds.get(i)));
            registrations.add(SampleData.updateOwnerVehicleRegistration(registration, documentIds.get(i)));
        }
    }

    public static void main(final String... args) {
        final List<DriversLicense> newDriversLicenses = new ArrayList<>();
        final List<VehicleRegistration> newVehicleRegistrations = new ArrayList<>();
        ConnectToLedger.getDriver().execute(txn -> {
            List<String> documentIds = insertDocuments(txn, Constants.PERSON_TABLE_NAME, SampleData.PEOPLE);
            updatePersonId(documentIds, newDriversLicenses, newVehicleRegistrations);
            insertDocuments(txn, Constants.VEHICLE_TABLE_NAME, SampleData.VEHICLES);
            insertDocuments(txn, Constants.VEHICLE_REGISTRATION_TABLE_NAME,
                    Collections.unmodifiableList(newVehicleRegistrations));
            insertDocuments(txn, Constants.DRIVERS_LICENSE_TABLE_NAME,
                    Collections.unmodifiableList(newDriversLicenses));
        });
        log.info("Documents inserted successfully!");
    }
}