using Tiku.Domain.Learning;

namespace Tiku.Application.Learning;

public sealed record LearningAccessSnapshot(
    Guid TenantId,
    Guid UserId,
    Guid BusinessLineId,
    LearningRegionAccessStrategy RegionAccessStrategy,
    IReadOnlySet<Guid> LicensedRegionIds,
    Guid? TargetRegionId,
    IReadOnlySet<Guid> ContentSliceIds,
    IReadOnlySet<Guid> ClassAssignmentIds,
    long GrantVersion,
    long ContentVersion,
    long StrongRevocationVersion,
    DateTimeOffset ValidUntil,
    DateTimeOffset GeneratedAt);

public sealed record LearningResourceAccessDecision(
    Guid ContentSliceId,
    PracticeAccessMode AccessMode,
    Guid? EntitlementId,
    Guid? ClassAssignmentId,
    LearningAccessSnapshot Snapshot);

public interface ILearningAccessService
{
    Task<LearningAccessSnapshot> GetSnapshotAsync(
        LearningActor actor,
        CancellationToken cancellationToken = default);

    Task<LearningResourceAccessDecision> EnsureResourceAccessAsync(
        LearningActor actor,
        LearningContentResourceType resourceType,
        Guid resourceId,
        CancellationToken cancellationToken = default);

    Task EnsureStrongRevocationVersionAsync(
        LearningActor actor,
        long expectedVersion,
        CancellationToken cancellationToken = default);

    Task InvalidateAsync(Guid tenantId, Guid userId, CancellationToken cancellationToken = default);
}

public sealed class LearningAccessException(string code, string message) : LearningException(code, message);