squidex/backend/src/Squidex.Domain.Apps.Core.Model/Contents/Workflows.cs

// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschraenkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Linq;
using Squidex.Infrastructure;
using Squidex.Infrastructure.Collections;

namespace Squidex.Domain.Apps.Core.Contents
{
    public sealed class Workflows : ImmutableDictionary<DomainId, Workflow>
    {
        public static readonly Workflows Empty = new Workflows();

        private Workflows()
        {
        }

        public Workflows(Dictionary<DomainId, Workflow> inner)
            : base(inner)
        {
        }

        [Pure]
        public Workflows Remove(DomainId id)
        {
            return Without<Workflows>(id);
        }

        [Pure]
        public Workflows Add(DomainId workflowId, string name)
        {
            Guard.NotNullOrEmpty(name, nameof(name));

            return With<Workflows>(workflowId, Workflow.CreateDefault(name));
        }

        [Pure]
        public Workflows Set(Workflow workflow)
        {
            Guard.NotNull(workflow, nameof(workflow));

            return With<Workflows>(default, workflow);
        }

        [Pure]
        public Workflows Set(DomainId id, Workflow workflow)
        {
            Guard.NotNull(workflow, nameof(workflow));

            return With<Workflows>(id, workflow);
        }

        [Pure]
        public Workflows Update(DomainId id, Workflow workflow)
        {
            Guard.NotNull(workflow, nameof(workflow));

            if (id == DomainId.Empty)
            {
                return Set(workflow);
            }

            if (!ContainsKey(id))
            {
                return this;
            }

            return With<Workflows>(id, workflow);
        }

        public Workflow GetFirst()
        {
            return Values.FirstOrDefault() ?? Workflow.Default;
        }
    }
}