using System;
using static StellaOps.Localization.T;

namespace StellaOps.Provcache;

public sealed partial class VeriKeyBuilder
{
    /// <summary>
    /// Sets the merge policy hash (PolicyBundle digest).
    /// </summary>
    /// <param name="policyHash">The policy bundle hash.</param>
    /// <returns>This builder for fluent chaining.</returns>
    public VeriKeyBuilder WithMergePolicyHash(string policyHash)
    {
        if (string.IsNullOrWhiteSpace(policyHash))
            throw new ArgumentException(_t("common.provcache.policy_hash_required"), nameof(policyHash));

        _mergePolicyHash = NormalizeHash(policyHash);
        return this;
    }

    /// <summary>
    /// Computes policy hash from raw policy bundle bytes.
    /// </summary>
    /// <param name="policyBytes">Raw policy bundle content bytes.</param>
    /// <returns>This builder for fluent chaining.</returns>
    public VeriKeyBuilder WithMergePolicyBytes(ReadOnlySpan<byte> policyBytes)
    {
        _mergePolicyHash = ComputeHash(policyBytes);
        return this;
    }
}