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/*-
 * ========================LICENSE_START=================================
 * UniversalDB
 * ---
 * Copyright (C) 2014 - 2024 TeamApps.org
 * ---
 * Licensed 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.
 * =========================LICENSE_END==================================
 */
package org.teamapps.universaldb.analysis;

import org.teamapps.universaldb.index.log.DefaultLogIndex;
import org.teamapps.universaldb.index.log.LogIterator;
import org.teamapps.universaldb.index.log.RotatingLogIndex;
import org.teamapps.universaldb.index.transaction.resolved.ResolvedTransaction;
import org.teamapps.universaldb.index.transaction.schema.ModelUpdate;

import java.io.File;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

public class TransactionLogAnalyzer {


	public static void analyzeLog(File path) {
		RotatingLogIndex transactionLog = new RotatingLogIndex(path, "transactions");
		DefaultLogIndex modelsLog = new DefaultLogIndex(path, "models");

		List modelUpdates = getModelUpdates(modelsLog);

		LogIterator logIterator = transactionLog.readLogs();
		while (logIterator.hasNext()) {
			ResolvedTransaction transaction = ResolvedTransaction.createResolvedTransaction(logIterator.next());

		}
		logIterator.closeSave();
	}

	public synchronized static List getModelUpdates(DefaultLogIndex modelsLog) {
		if (modelsLog.isEmpty()) {
			return Collections.emptyList();
		}
		return modelsLog.readAllLogs()
				.stream()
				.map(ModelUpdate::new)
				.collect(Collectors.toList());
	}
}