src/main/java/design/persistence/importexport/JSONHandler.java


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package design.persistence.importexport;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.json.JsonMapper;

import java.io.File;
import java.io.IOException;

public class JSONHandler implements DataHandler {

    private final DataSource dataSource;
    private final JsonMapper jsonMapper = new JsonMapper();

    public JSONHandler(DataSource dataSource) {
        this.dataSource = dataSource;
    }

    @Override
    public void importData(File file) throws IOException {
        JsonNode tree = jsonMapper.readTree(file);
        dataSource.importData(tree);
    }

    @Override
    public void exportData(File file) throws IOException{
        JsonNode tree = dataSource.exportData();
        jsonMapper.writerWithDefaultPrettyPrinter().writeValue(file, tree);
    }
}