use sea_orm::entity::prelude::*; use crate::llm::db::{ModelId, ProviderId}; /// An LLM model.#[derive(Clone, Debug, PartialEq, DeriveEntityModel)]#[sea_orm(table_name = "models")]pub struct Model {    #[sea_orm(primary_key)]    pub id: ModelId,    pub provider_id: ProviderId,    pub name: String,    pub max_requests_per_minute: i64,    pub max_tokens_per_minute: i64,    pub max_tokens_per_day: i64,    pub price_per_million_input_tokens: i32,    pub price_per_million_cache_creation_input_tokens: i32,    pub price_per_million_cache_read_input_tokens: i32,    pub price_per_million_output_tokens: i32,} #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]pub enum Relation {    #[sea_orm(        belongs_to = "super::provider::Entity",        from = "Column::ProviderId",        to = "super::provider::Column::Id"    )]    Provider,    #[sea_orm(has_many = "super::usage::Entity")]    Usages,    #[sea_orm(has_many = "super::billing_event::Entity")]    BillingEvents,} impl Related<super::provider::Entity> for Entity {    fn to() -> RelationDef {        Relation::Provider.def()    }} impl Related<super::usage::Entity> for Entity {    fn to() -> RelationDef {        Relation::Usages.def()    }} impl Related<super::billing_event::Entity> for Entity {    fn to() -> RelationDef {        Relation::BillingEvents.def()    }} impl ActiveModelBehavior for ActiveModel {}