package rescuecore2.log;

import static rescuecore2.misc.EncodingTools.writeInt32;
import static rescuecore2.misc.EncodingTools.writeString;
import static rescuecore2.misc.EncodingTools.readInt32;
import static rescuecore2.misc.EncodingTools.readString;

import java.io.OutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.util.Set;

import rescuecore2.config.Config;

/**
   A configuration record.
*/
public class ConfigRecord implements LogRecord {
    private Config config;

    /**
       Construct a new ConfigRecord.
       @param config The Config to record.
     */
    public ConfigRecord(Config config) {
        this.config = config;
    }

    /**
       Construct a new ConfigRecord and read data from an InputStream.
       @param in The InputStream to read from.
       @throws IOException If there is a problem reading the stream.
     */
    public ConfigRecord(InputStream in) throws IOException {
        read(in);
    }

    @Override
    public RecordType getRecordType() {
        return RecordType.CONFIG;
    }

    @Override
    public void write(OutputStream out) throws IOException {
        Set<String> all = config.getAllKeys();
        writeInt32(all.size(), out);
        for (String key : all) {
            String value = config.getValue(key);
            writeString(key, out);
            writeString(value, out);
        }
    }

    @Override
    public void read(InputStream in) throws IOException {
        config = new Config();
        int size = readInt32(in);
        for (int i = 0; i < size; ++i) {
            String key = readString(in);
            String value = readString(in);
            config.setValue(key, value);
        }
    }

    /**
       Get the Config.
       @return The config.
    */
    public Config getConfig() {
        return config;
    }
}