/*
 * 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 <map>
#include <memory>
#include <optional>
#include <string>
#include <vector>

#include "arrow/api.h"
#include "paimon/result.h"
#include "paimon/schema/schema.h"

namespace paimon {

/// Read-only schema wrapper for system tables.
class SystemTableSchema : public SystemSchema {
 public:
    explicit SystemTableSchema(std::shared_ptr<arrow::Schema> schema);

    Result<std::unique_ptr<::ArrowSchema>> GetArrowSchema() const override;
    Result<std::string> GetJsonSchema() const override;
    std::vector<std::string> FieldNames() const override;
    Result<FieldType> GetFieldType(const std::string& field_name) const override;
    std::optional<std::string> Comment() const override;

 private:
    std::shared_ptr<arrow::Schema> schema_;
    std::vector<std::string> field_names_;
};

}  // namespace paimon
