Hy2026/backend/Domain/Rules/PartnershipWorkflow.cs

using TarninaHub.Domain.Enums;

namespace TarninaHub.Domain.Rules;

public static class PartnershipWorkflow
{
    private static readonly IReadOnlyDictionary<PartnershipStatus, PartnershipStatus[]> Transitions =
        new Dictionary<PartnershipStatus, PartnershipStatus[]>
        {
            [PartnershipStatus.Proposed] = [PartnershipStatus.Active, PartnershipStatus.Closed],
            [PartnershipStatus.Active] = [PartnershipStatus.Closed],
            [PartnershipStatus.Closed] = [],
        };

    public static bool CanTransition(PartnershipStatus from, PartnershipStatus to) =>
        from == to || Transitions[from].Contains(to);

    public static bool IsTerminal(PartnershipStatus status) =>
        Transitions[status].Length == 0;
}