using System.Text.Json;
using Tiku.Domain.Common;

namespace Tiku.Domain.Content;

public sealed class QuestionAsset : AuditableTenantEntity
{
    public Guid? FamilyId { get; set; }
    public Guid? CurrentRevisionId { get; set; }
    public string DeliveryFingerprint { get; set; } = string.Empty;
    public QuestionAssetStatus Status { get; set; } = QuestionAssetStatus.Draft;
    public Guid? CreatedBy { get; set; }
    public Guid? UpdatedBy { get; set; }
}

public sealed class QuestionRevision : Entity, ITenantOwned
{
    public Guid QuestionAssetId { get; set; }
    public int RevisionNo { get; set; } = 1;
    public string QuestionType { get; set; } = "choice";
    public string? TypeLabel { get; set; }
    public int? Difficulty { get; set; }
    public string NormalizedContent { get; set; } = string.Empty;
    public string? Content { get; set; }
    public JsonElement Options { get; set; } = JsonDefaults.Array();
    public int? CorrectOptionIndex { get; set; }
    public JsonElement CorrectOptionIndices { get; set; } = JsonDefaults.Array();
    public string? AnswerText { get; set; }
    public string? Explanation { get; set; }
    public JsonElement SubQuestions { get; set; } = JsonDefaults.Array();
    public string? CodeLang { get; set; }
    public string? CodeTemplate { get; set; }
    public string DeliveryFingerprint { get; set; } = string.Empty;
    public Guid? CreatedBy { get; set; }
    public DateTimeOffset CreatedAt { get; set; } = DateTimeOffset.UtcNow;
    public Guid TenantId { get; set; }
}

public sealed class QuestionFamily : AuditableTenantEntity
{
    public string Name { get; set; } = string.Empty;
    public string? Description { get; set; }
    public Guid? CreatedBy { get; set; }
}

public sealed class QuestionPlacement : AuditableTenantEntity
{
    public Guid QuestionAssetOwnerTenantId { get; set; }
    public Guid QuestionAssetId { get; set; }
    public Guid CurriculumVersionId { get; set; }
    public Guid CurriculumNodeId { get; set; }
    public Guid AssessmentPolicyVersionId { get; set; }
    public int? DifficultyOverride { get; set; }
    public QuestionPlacementStatus Status { get; set; } = QuestionPlacementStatus.Draft;
    public DateTimeOffset? ValidFrom { get; set; }
    public DateTimeOffset? ValidTo { get; set; }
    public Guid? CreatedBy { get; set; }
    public Guid? UpdatedBy { get; set; }
}

public sealed class QuestionPlacementConcept : Entity, ITenantOwned
{
    public Guid PlacementId { get; set; }
    public Guid KnowledgeConceptId { get; set; }
    public Guid TenantId { get; set; }
}

public sealed class QuestionPlacementRuleGroup : Entity, ITenantOwned
{
    public Guid PlacementId { get; set; }
    public int GroupOrder { get; set; }
    public Guid TenantId { get; set; }
}

public sealed class QuestionPlacementRuleCondition : Entity, ITenantOwned
{
    public Guid RuleGroupId { get; set; }
    public Guid TargetDimensionDefinitionId { get; set; }
    public Guid TargetNodeId { get; set; }
    public TargetRuleOperator Operator { get; set; } = TargetRuleOperator.Exact;
    public Guid TenantId { get; set; }
}

public enum QuestionAssetStatus
{
    Draft,
    Published,
    Archived
}

public enum QuestionPlacementStatus
{
    Draft,
    Active,
    Retired
}

public enum TargetRuleOperator
{
    Exact,
    DescendantOf,
    NotExact,
    NotDescendantOf
}