// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
#nullable disable
 
using System.Collections.Immutable;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.ExtractMethod;
 
internal sealed partial class OperationStatus
{
    public OperationStatus(bool succeeded, string reason)
    {
        Succeeded = succeeded;
        Reasons = reason == null ? [] : [reason];
    }
 
    private OperationStatus(bool succeeded, ImmutableArray<string> reasons)
    {
        Contract.ThrowIfTrue(reasons.IsDefault);
 
        Succeeded = succeeded;
        Reasons = reasons;
    }
 
    public OperationStatus With(bool succeeded, string reason)
    {
        var newSucceeded = Succeeded && succeeded;
 
        var reasons = reason == null ? Reasons : Reasons.Concat(reason);
        return new OperationStatus(newSucceeded, reasons);
    }
 
    public OperationStatus With(OperationStatus operationStatus)
    {
        var newSucceeded = Succeeded && operationStatus.Succeeded;
 
        var reasons = Reasons.Concat(operationStatus.Reasons);
        return new OperationStatus(newSucceeded, reasons);
    }
 
    public OperationStatus MakeFail()
        => new(succeeded: false, Reasons);
 
    public OperationStatus<T> With<T>(T data)
        => Create(this, data);
 
    public bool Succeeded { get; }
    public ImmutableArray<string> Reasons { get; }
 
    public bool Failed => !Succeeded;
}