using TarninaHub.Domain.Enums;

namespace TarninaHub.Domain.Rules;

public static class IdeaWorkflow
{
    private static readonly IReadOnlyDictionary<IdeaStatus, IdeaStatus[]> Transitions =
        new Dictionary<IdeaStatus, IdeaStatus[]>
        {
            [IdeaStatus.Draft] = [IdeaStatus.Submitted],
            [IdeaStatus.Submitted] = [IdeaStatus.InReview],
            [IdeaStatus.InReview] = [IdeaStatus.Accepted, IdeaStatus.Rejected],
            [IdeaStatus.Accepted] = [],
            [IdeaStatus.Rejected] = [],
        };

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

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