use sea_orm::entity::prelude::*;
use serde::{Deserialize, Serialize};

/// 审计日志实体 — 映射 audit_logs 表。
#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
#[sea_orm(table_name = "audit_logs")]
pub struct Model {
    #[sea_orm(primary_key, auto_increment = false)]
    pub id: Uuid,
    pub tenant_id: Uuid,
    pub user_id: Option<Uuid>,
    pub action: String,
    pub resource_type: String,
    pub resource_id: Option<Uuid>,
    pub old_value: Option<serde_json::Value>,
    pub new_value: Option<serde_json::Value>,
    pub ip_address: Option<String>,
    pub user_agent: Option<String>,
    pub created_at: DateTimeUtc,
    /// 哈希链 — 前一条记录的 record_hash
    pub prev_hash: Option<String>,
    /// 当前记录的哈希 SHA256(id + action + resource_type + resource_id + created_at + prev_hash)
    pub record_hash: Option<String>,
}

#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
pub enum Relation {}

impl ActiveModelBehavior for ActiveModel {}