using System;
using System.Linq;

using FrostFS.Netmap;

namespace FrostFS.SDK.Client;

public static class PlacementPolicyMapper
{
    public static FrostFsPlacementPolicy ToModel(this PlacementPolicy placementPolicy)
    {
        if (placementPolicy is null)
        {
            throw new ArgumentNullException(nameof(placementPolicy));
        }

        return new FrostFsPlacementPolicy(
            placementPolicy.Unique,
            placementPolicy.ContainerBackupFactor,
            new System.Collections.ObjectModel.Collection<FrostFsSelector>(placementPolicy.Selectors.Select(selector => selector.ToModel()).ToList()),
            new System.Collections.ObjectModel.Collection<FrostFsFilter>(placementPolicy.Filters.Select(filter => filter.ToModel()).ToList()),
            placementPolicy.Replicas.Select(replica => replica.ToModel()).ToArray()
        );
    }
}