/*
 * 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
 *
 *   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.
 */

#pragma once

#include <memory>

#include "paimon/core/table/source/snapshot/follow_up_scanner.h"
#include "paimon/logging.h"

namespace paimon {
class DeltaFollowUpScanner : public FollowUpScanner {
 public:
    DeltaFollowUpScanner() : logger_(Logger::GetLogger("DeltaFollowUpScanner")) {}

    bool NeedScanSnapshot(const Snapshot& snapshot) const override {
        if (snapshot.GetCommitKind() == Snapshot::CommitKind::Append()) {
            return true;
        }
        PAIMON_LOG_DEBUG(
            logger_, "Ignore snapshot #%ld with commit kind %s in delta follow-up scanner.",
            snapshot.Id(), Snapshot::CommitKind::ToString(snapshot.GetCommitKind()).c_str());
        return false;
    }
    Result<std::shared_ptr<Plan>> Scan(
        const Snapshot& snapshot,
        const std::shared_ptr<SnapshotReader>& snapshot_reader) const override {
        return snapshot_reader->WithMode(ScanMode::DELTA)->WithSnapshot(snapshot)->Read();
    }

 private:
    std::unique_ptr<Logger> logger_;
};
}  // namespace paimon
