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

/// 用药记录实体 — 记录患者当前和历史的用药情况
#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
#[sea_orm(table_name = "medication_record")]
pub struct Model {
    #[sea_orm(primary_key, auto_increment = false)]
    pub id: Uuid,
    pub tenant_id: Uuid,
    pub patient_id: Uuid,
    /// 药品名称（商品名）
    pub medication_name: String,
    /// 通用名
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub generic_name: Option<String>,
    /// 剂量（如 500mg）
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub dosage: Option<String>,
    /// 单位（如 mg/ml/片）
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub unit: Option<String>,
    /// 用药频率: daily/bid/tid/qid/prn
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub frequency: Option<String>,
    /// 给药途径: oral/injection/topical/inhalation
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub route: Option<String>,
    /// 开始日期
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub start_date: Option<chrono::NaiveDate>,
    /// 结束日期
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub end_date: Option<chrono::NaiveDate>,
    /// 是否当前用药
    pub is_current: bool,
    /// 开方医生 ID
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub prescribed_by: Option<Uuid>,
    /// 备注（PII 加密存储）
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub notes: Option<String>,
    pub created_at: DateTimeUtc,
    pub updated_at: DateTimeUtc,
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub created_by: Option<Uuid>,
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub updated_by: Option<Uuid>,
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub deleted_at: Option<DateTimeUtc>,
    pub version: i32,
}

#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
pub enum Relation {
    #[sea_orm(
        belongs_to = "super::patient::Entity",
        from = "Column::PatientId",
        to = "super::patient::Column::Id"
    )]
    Patient,
}

impl Related<super::patient::Entity> for Entity {
    fn to() -> RelationDef {
        Relation::Patient.def()
    }
}

impl ActiveModelBehavior for ActiveModel {}