server/util/Seeder/Pipeline/SeederContextExtensions.cs

using Bit.Core.Entities;
using Bit.Seeder.Services;
using Microsoft.AspNetCore.Identity;
using Microsoft.Extensions.DependencyInjection;

namespace Bit.Seeder.Pipeline;

/// <summary>
/// Convenience extension methods for resolving common services from <see cref="SeederContext.Services"/>.
/// Minimizes churn in step implementations when transitioning from direct property access to DI.
/// </summary>
internal static class SeederContextExtensions
{
    internal static IPasswordHasher<User> GetPasswordHasher(this SeederContext context) =>
        context.Services.GetRequiredService<IPasswordHasher<User>>();

    internal static IManglerService GetMangler(this SeederContext context) =>
        context.Services.GetRequiredService<IManglerService>();

    internal static ISeedReader GetSeedReader(this SeederContext context) =>
        context.Services.GetRequiredService<ISeedReader>();

    internal static SeederSettings GetSettings(this SeederContext context) =>
        context.Services.GetRequiredService<SeederSettings>();

    internal static string GetPassword(this SeederContext context) =>
        context.GetSettings().Password ?? Factories.UserSeeder.DefaultPassword;

    internal static int GetKdfIterations(this SeederContext context) =>
        context.GetSettings().KdfIterations;

    /// <summary>
    /// Resolves the optional progress reporter. Returns null when no UI is attached.
    /// Callers should null-check before constructing events to keep the no-reporter path allocation-free.
    /// </summary>
    internal static IProgress<SeederProgressEvent>? GetProgress(this SeederContext context) =>
        context.Services.GetService<IProgress<SeederProgressEvent>>();
}

/// <summary>
/// Runtime settings for a seeding operation, registered in DI.
/// </summary>
internal sealed record SeederSettings(string? Password = null, int KdfIterations = 5_000);