// 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.

#include "util/jdbc_utils.h"

#include <filesystem>

#include "cloud/config.h"

#include "common/config.h"

#include "runtime/plugin/cloud_plugin_downloader.h"

namespace doris {

Status JdbcUtils::resolve_driver_url(const std::string& url, std::string* result_url) {

    // Already a full URL (e.g. "file:///path/to/driver.jar" or "hdfs://...")

    if (url.find(":/") != std::string::npos) {

        *result_url = url;

        return Status::OK();

    }

    const char* doris_home = std::getenv("DORIS_HOME");

    if (doris_home == nullptr) {

        return Status::InternalError("DORIS_HOME environment variable is not set");

    }

    std::string default_url = std::string(doris_home) + "/plugins/jdbc_drivers";

    std::string default_old_url = std::string(doris_home) + "/jdbc_drivers";

    if (config::jdbc_drivers_dir == default_url) {

        std::string target_path = default_url + "/" + url;

        std::string old_target_path = default_old_url + "/" + url;

        if (std::filesystem::exists(target_path)) {

            *result_url = "file://" + target_path;

        } else if (std::filesystem::exists(old_target_path)) {

            *result_url = "file://" + old_target_path;

        } else if (config::is_cloud_mode()) {

            // In cloud/elastic deployments, BEs are ephemeral and driver JARs

            // may not exist locally. Try downloading from cloud storage.

            std::string downloaded_path;

            RETURN_IF_ERROR(CloudPluginDownloader::download_from_cloud(

                    CloudPluginDownloader::PluginType::JDBC_DRIVERS, url, target_path,

                    &downloaded_path));

            *result_url = "file://" + downloaded_path;

        } else {

            return Status::InternalError("JDBC driver file does not exist: " + url);

        }

    } else {

        *result_url = "file://" + config::jdbc_drivers_dir + "/" + url;

    }

    return Status::OK();

}

} // namespace doris