using Tiku.Domain.Common;

namespace Tiku.Domain.Learning;

public sealed class BusinessLine : AuditableEntity
{
    public string Code { get; set; } = string.Empty;
    public string Name { get; set; } = string.Empty;
    public LearningRegionAccessStrategy RegionAccessStrategy { get; set; } =
        LearningRegionAccessStrategy.LicensedRegions;
    public bool RequiresBaseRegion { get; set; }
    public int TargetRegionCooldownDays { get; set; } = 30;
    public bool IsActive { get; set; } = true;
}

public sealed class MarketRegion : AuditableEntity
{
    public string Code { get; set; } = string.Empty;
    public string Name { get; set; } = string.Empty;
    public string? ParentCode { get; set; }
    public bool IsActive { get; set; } = true;
}

public sealed class TenantLearningLicense : AuditableTenantEntity
{
    public Guid BusinessLineId { get; set; }
    public bool IsPrimary { get; set; } = true;
    public bool IncludesNational { get; set; }
    public bool AllowsAnyTargetRegion { get; set; }
    public LearningLicenseStatus Status { get; set; } = LearningLicenseStatus.Active;
    public DateTimeOffset StartsAt { get; set; } = DateTimeOffset.UtcNow;
    public DateTimeOffset? EndsAt { get; set; }
    public long Version { get; set; } = 1;
}

public sealed class TenantLearningLicenseRegion : Entity, ITenantOwned
{
    public Guid LicenseId { get; set; }
    public Guid MarketRegionId { get; set; }
    public bool IsBaseRegion { get; set; }
    public Guid TenantId { get; set; }
}

public sealed class LearningProduct : AuditableTenantEntity
{
    public Guid BusinessLineId { get; set; }
    public string Code { get; set; } = string.Empty;
    public string Name { get; set; } = string.Empty;
    public bool IsActive { get; set; } = true;
}

public sealed class LearningProductScope : Entity, ITenantOwned
{
    public Guid ProductId { get; set; }
    public Guid ContentSliceOwnerTenantId { get; set; }
    public Guid ContentSliceId { get; set; }
    public Guid TenantId { get; set; }
}

public sealed class ContentSlice : AuditableTenantEntity
{
    public Guid BusinessLineId { get; set; }
    public Guid? MarketRegionId { get; set; }
    public LearningRegionScopeKind RegionScope { get; set; } = LearningRegionScopeKind.Region;
    public LearningContentResourceType ResourceType { get; set; } = LearningContentResourceType.QuestionBank;
    public Guid ResourceId { get; set; }
    public long ContentVersion { get; set; } = 1;
    public ContentSliceStatus Status { get; set; } = ContentSliceStatus.Active;
}

public sealed class StudentTargetRegionHistory : AuditableTenantEntity
{
    public Guid UserId { get; set; }
    public Guid BusinessLineId { get; set; }
    public Guid MarketRegionId { get; set; }
    public DateTimeOffset EffectiveAt { get; set; } = DateTimeOffset.UtcNow;
    public DateTimeOffset? EndedAt { get; set; }
    public bool IsCurrent { get; set; } = true;
    public Guid? ChangedBy { get; set; }
    public string? Reason { get; set; }
}

public sealed class ClassContentAssignment : AuditableTenantEntity
{
    public Guid ClassId { get; set; }
    public Guid ContentSliceOwnerTenantId { get; set; }
    public Guid ContentSliceId { get; set; }
    public LearningContentResourceType ResourceType { get; set; }
    public Guid ResourceId { get; set; }
    public DateTimeOffset StartsAt { get; set; } = DateTimeOffset.UtcNow;
    public DateTimeOffset? EndsAt { get; set; }
    public ClassContentAssignmentStatus Status { get; set; } = ClassContentAssignmentStatus.Active;
    public Guid? CreatedBy { get; set; }
    public Guid? RevokedBy { get; set; }
    public string? RevokedReason { get; set; }
}

public sealed class LearningAccessVersion : TenantEntity
{
    public Guid UserId { get; set; }
    public long GrantVersion { get; set; } = 1;
    public long ContentVersion { get; set; } = 1;
    public long StrongRevocationVersion { get; set; } = 1;
    public DateTimeOffset UpdatedAt { get; set; } = DateTimeOffset.UtcNow;
}

public enum LearningRegionAccessStrategy
{
    NationalOnly,
    LicensedRegions,
    NationalWithStudentTargetRegion,
    NationalWithLicensedRegions
}

public enum LearningLicenseStatus
{
    Active,
    Suspended,
    Expired,
    Cancelled
}

public enum LearningRegionScopeKind
{
    National,
    Region
}

public enum LearningContentResourceType
{
    QuestionBank,
    Collection,
    Blueprint,
    ContentEntry,
    ContentNode
}

public enum ContentSliceStatus
{
    Draft,
    Active,
    Retired
}

public enum ClassContentAssignmentStatus
{
    Active,
    Revoked,
    Expired
}