/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF 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
 *
 *    https://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.grails.plugins.databasemigration.liquibase

import groovy.transform.CompileStatic

import liquibase.command.CommandResultsBuilder
import liquibase.command.CommandScope
import liquibase.command.core.DiffChangelogCommandStep
import liquibase.command.core.DiffCommandStep
import liquibase.command.core.InternalSnapshotCommandStep
import liquibase.command.core.helpers.DiffOutputControlCommandStep
import liquibase.command.core.helpers.ReferenceDbUrlConnectionCommandStep
import liquibase.database.Database
import liquibase.database.ObjectQuotingStrategy
import liquibase.diff.DiffResult
import liquibase.diff.output.DiffOutputControl
import liquibase.serializer.ChangeLogSerializerFactory

import grails.util.GrailsStringUtils

@CompileStatic
class GroovyDiffToChangeLogCommandStep extends DiffChangelogCommandStep {

    public static final String[] COMMAND_NAME = new String[] {'groovyDiffChangelog'}

    @Override
    void run(CommandResultsBuilder resultsBuilder) {
        CommandScope commandScope = resultsBuilder.getCommandScope()
        Database referenceDatabase = commandScope.getArgumentValue(ReferenceDbUrlConnectionCommandStep.REFERENCE_DATABASE_ARG)
        String changeLogFile = commandScope.getArgumentValue(CHANGELOG_FILE_ARG)

        InternalSnapshotCommandStep.logUnsupportedDatabase(referenceDatabase, this.getClass())

        DiffCommandStep diffCommandStep = createDiffCommandStep()

        DiffResult diffResult = diffCommandStep.createDiffResult(resultsBuilder)

        PrintStream outputStream = new PrintStream(resultsBuilder.getOutputStream(), false, 'UTF-8')

        ObjectQuotingStrategy originalStrategy = referenceDatabase.getObjectQuotingStrategy()

        DiffOutputControl diffOutputControl = (DiffOutputControl) resultsBuilder.getResult(DiffOutputControlCommandStep.DIFF_OUTPUT_CONTROL.getName())

        try {
            referenceDatabase.setObjectQuotingStrategy(ObjectQuotingStrategy.QUOTE_ALL_OBJECTS)
            if (GrailsStringUtils.trimToNull(changeLogFile) == null) {
                createDiffToChangeLogObject(diffResult, diffOutputControl, false).print(outputStream, ChangeLogSerializerFactory.instance.getSerializer('groovy'))
            } else {
                createDiffToChangeLogObject(diffResult, diffOutputControl, false).print(changeLogFile, ChangeLogSerializerFactory.instance.getSerializer(changeLogFile))
            }
        }
        finally {
            referenceDatabase.setObjectQuotingStrategy(originalStrategy)
            outputStream.flush()
        }
        resultsBuilder.addResult('statusCode', 0)

    }

    @Override
    String[][] defineCommandNames() {
        return new String[][] { COMMAND_NAME }
    }

    protected DiffCommandStep createDiffCommandStep() {
        return new DiffCommandStep()
    }

}
