OperationResult.cs

namespace Backend.Application.Common;

public class OperationResult<TResult> : IOperationResult
{
    public TResult? Result { get; set; }

    public bool IsSuccess { get; set; }
    public bool IsNotFound { get; set; }
    public List<KeyValuePair<string, string>> ErrorMessages { get; set; } = new();

    public static OperationResult<TResult> SuccessResult(TResult result)
    {
        return new OperationResult<TResult>()
        {
            Result = result,
            IsSuccess = true
        };
    }

    public static OperationResult<TResult> FailureResult(string propertyName, string message)
    {
        var result = new OperationResult<TResult>
        {
            Result = default
        };
        result.ErrorMessages.Add(new KeyValuePair<string, string>(propertyName, message));
        return result;
    }

    public static OperationResult<TResult> FailureResult(List<KeyValuePair<string, string>> errors)
    {
        return new OperationResult<TResult>
        {
            Result = default,
            ErrorMessages = errors
        };
    }

    public static OperationResult<TResult> DomainFailureResult(string errorMessage)
    {
        return new OperationResult<TResult>
        {
            Result = default,
            ErrorMessages = new(new List<KeyValuePair<string, string>>() { new("DomainError", errorMessage) })
        };
    }

    public static OperationResult<TResult> NotFoundResult(string propertyName, string message)
    {
        var result = new OperationResult<TResult>
        {
            Result = default,
            IsNotFound = true
        };
        result.ErrorMessages.Add(new KeyValuePair<string, string>(propertyName, message));
        return result;
    }
}

public class OperationResult : IOperationResult
{
    public bool IsSuccess { get; set; }
    public bool IsNotFound { get; set; }
    public List<KeyValuePair<string, string>> ErrorMessages { get; set; } = new();

    public static OperationResult SuccessResult()
    {
        return new OperationResult()
        {
            IsSuccess = true
        };
    }

    public static OperationResult FailureResult(string propertyName, string message)
    {
        var result = new OperationResult();
        result.ErrorMessages.Add(new KeyValuePair<string, string>(propertyName, message));
        return result;
    }

    public static OperationResult FailureResult(List<KeyValuePair<string, string>> errors)
    {
        return new OperationResult
        {
            ErrorMessages = errors
        };
    }

    public static OperationResult DomainFailureResult(string errorMessage)
    {
        return new OperationResult
        {
            ErrorMessages = new(new List<KeyValuePair<string, string>>() { new("DomainError", errorMessage) })
        };
    }

    public static OperationResult NotFoundResult(string propertyName, string message)
    {
        var result = new OperationResult
        {
            IsNotFound = true
        };
        result.ErrorMessages.Add(new KeyValuePair<string, string>(propertyName, message));
        return result;
    }
}