/**
 * Represents the configuration parameters for the simulated download manager.
 * This class is immutable to ensure thread-safety when shared among worker threads.
 */
public class DownloadConfig {
    private final String fileName;
    private final int totalSizeMB;
    private final int chunkCount;
    private final int minStepDelayMs;
    private final int maxStepDelayMs;
    private final double minStepDownloadMB;
    private final double maxStepDownloadMB;

    /**
     * Constructs a new DownloadConfig with specified simulation parameters.
     */
    public DownloadConfig(String fileName, int totalSizeMB, int chunkCount,
                          int minStepDelayMs, int maxStepDelayMs,
                          double minStepDownloadMB, double maxStepDownloadMB) {
        this.fileName = fileName;
        this.totalSizeMB = totalSizeMB;
        this.chunkCount = chunkCount;
        this.minStepDelayMs = minStepDelayMs;
        this.maxStepDelayMs = maxStepDelayMs;
        this.minStepDownloadMB = minStepDownloadMB;
        this.maxStepDownloadMB = maxStepDownloadMB;
    }

    // Getters
    public String getFileName() {
        return fileName;
    }

    public int getTotalSizeMB() {
        return totalSizeMB;
    }

    public int getChunkCount() {
        return chunkCount;
    }

    public int getMinStepDelayMs() {
        return minStepDelayMs;
    }

    public int getMaxStepDelayMs() {
        return maxStepDelayMs;
    }

    public double getMinStepDownloadMB() {
        return minStepDownloadMB;
    }

    public double getMaxStepDownloadMB() {
        return maxStepDownloadMB;
    }

    @Override
    public String toString() {
        return "DownloadConfig{" +
                "fileName='" + fileName + '\'' +
                ", totalSizeMB=" + totalSizeMB +
                ", chunkCount=" + chunkCount +
                ", minStepDelayMs=" + minStepDelayMs +
                ", maxStepDelayMs=" + maxStepDelayMs +
                ", minStepDownloadMB=" + minStepDownloadMB +
                ", maxStepDownloadMB=" + maxStepDownloadMB +
                '}';
    }
}