namespace Admin.NET.Plugin.AiDOP.Entity.S6;

/// <summary>
/// S6-LEGACY-SNAPSHOT-MIGRATION-1：S6 存量运行中实例的审批权威快照迁移留证。
///
/// <para><b>为什么必须留证</b>：<c>ApprovalFlowInstance</c> 没有 version、没有 checksum、
/// 没有并发令牌，<c>UpdateTime</c> 也不是 DB 自动列 —— 裸 UPDATE 之后
/// <b>无法证明改过什么、为什么改、改前是什么</b>。而 <c>FlowJsonSnapshot</c> 同时是
/// 通用审批中心渲染历史流程图的数据源（<c>FlowInstanceService</c> 对外暴露 →
/// 前端 <c>center/index.vue</c> 与 <c>ApprovalPanel.vue</c> 消费）。
/// 没有这张表，这就是一次无法解释的静默改写。</para>
///
/// <para><b>与 <c>AdoS8ApprovalFlowRepairLog</c> 的关键差异：本表 append-only。</b>
/// S8 那张表每轮 <c>DELETE FROM ... WHERE true</c> 后整体重写（它描述的是「最近一次对账看到了什么」），
/// 迁移留证不能是这种语义 —— 迁移是**一次性历史事件**，记录一旦写下就不允许被后续运行抹掉，
/// 否则回滚依据会随时间消失。故本表独立建立，不复用 S8 那张。</para>
///
/// <para><b>幂等不依赖本表。</b>「是否已迁」的判据是快照自身内容（Role 节点的 approverIds
/// 是否还存在纯数字 token），不是「本表里有没有这条 InstanceId」——
/// 留证一旦丢失就重复改写，是 S8 先例踩过的坑。</para>
/// </summary>
[SugarTable("ado_s6_flow_authority_migration_log", "S6 存量流程审批权威迁移留证（append-only）")]
public class AdoS6FlowAuthorityMigrationLog
{
    [SugarColumn(ColumnName = "id", IsPrimaryKey = true, IsIdentity = true, ColumnDataType = "bigint")]
    public long Id { get; set; }

    /// <summary>迁移批次标识，同一次执行的所有记录共用，便于整批回滚定位。</summary>
    [SugarColumn(ColumnName = "migration_batch", Length = 64)]
    public string MigrationBatch { get; set; } = string.Empty;

    [SugarColumn(ColumnName = "instance_id", ColumnDataType = "bigint")]
    public long InstanceId { get; set; }

    [SugarColumn(ColumnName = "biz_type", Length = 64)]
    public string BizType { get; set; } = string.Empty;

    [SugarColumn(ColumnName = "biz_id", ColumnDataType = "bigint")]
    public long BizId { get; set; }

    /// <summary>由业务实体反查得到，**不取登录用户租户**（实例表自身无 TenantId 列）。</summary>
    [SugarColumn(ColumnName = "effective_tenant_id", ColumnDataType = "bigint")]
    public long EffectiveTenantId { get; set; }

    /// <summary>改前快照全文，逐字保留 —— 第一回滚来源。</summary>
    [SugarColumn(ColumnName = "before_snapshot", ColumnDataType = StaticConfig.CodeFirst_BigString, IsNullable = true)]
    public string? BeforeSnapshot { get; set; }

    /// <summary>改后快照全文。回滚前用它比对「现值确实是我改成的那样」。</summary>
    [SugarColumn(ColumnName = "after_snapshot", ColumnDataType = StaticConfig.CodeFirst_BigString, IsNullable = true)]
    public string? AfterSnapshot { get; set; }

    [SugarColumn(ColumnName = "before_md5", Length = 32, IsNullable = true)]
    public string? BeforeMd5 { get; set; }

    [SugarColumn(ColumnName = "after_md5", Length = 32, IsNullable = true)]
    public string? AfterMd5 { get; set; }

    /// <summary>逐节点映射：<c>node=N2_SUP_REVIEW;1329916010002=&gt;ROLE_S6_IPQC_SUPERVISOR@848643233415237</c>。</summary>
    [SugarColumn(ColumnName = "authority_mapping", ColumnDataType = StaticConfig.CodeFirst_BigString, IsNullable = true)]
    public string? AuthorityMapping { get; set; }

    /// <summary>第二回滚来源：可反查出原始 FlowJson 的 ApprovalFlowVersion 行 Id。</summary>
    [SugarColumn(ColumnName = "rollback_source", Length = 128, IsNullable = true)]
    public string? RollbackSource { get; set; }

    /// <summary>为什么改 / 为什么没改：判据与依据。</summary>
    [SugarColumn(ColumnName = "reason", Length = 1024, IsNullable = true)]
    public string? Reason { get; set; }

    /// <summary>APPLIED / SKIPPED_ALREADY_MIGRATED / BLOCKED_TARGET_AUTHORITY / BLOCKED_ROLLBACK_SOURCE / BLOCKED_CONCURRENT_MODIFICATION。</summary>
    [SugarColumn(ColumnName = "outcome", Length = 48)]
    public string Outcome { get; set; } = string.Empty;

    [SugarColumn(ColumnName = "created_at")]
    public DateTime CreatedAt { get; set; } = DateTime.Now;
}