use crate::db::{BillingCustomerId, BillingSubscriptionId};use sea_orm::entity::prelude::*;use serde::Serialize; /// A billing subscription.#[derive(Clone, Debug, Default, PartialEq, Eq, DeriveEntityModel)]#[sea_orm(table_name = "billing_subscriptions")]pub struct Model {    #[sea_orm(primary_key)]    pub id: BillingSubscriptionId,    pub billing_customer_id: BillingCustomerId,    pub stripe_subscription_id: String,    pub stripe_subscription_status: StripeSubscriptionStatus,    pub stripe_cancel_at: Option<DateTime>,    pub stripe_cancellation_reason: Option<StripeCancellationReason>,    pub created_at: DateTime,} #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]pub enum Relation {    #[sea_orm(        belongs_to = "super::billing_customer::Entity",        from = "Column::BillingCustomerId",        to = "super::billing_customer::Column::Id"    )]    BillingCustomer,} impl Related<super::billing_customer::Entity> for Entity {    fn to() -> RelationDef {        Relation::BillingCustomer.def()    }} impl ActiveModelBehavior for ActiveModel {} /// The status of a Stripe subscription.////// [Stripe docs](https://docs.stripe.com/api/subscriptions/object#subscription_object-status)#[derive(    Eq, PartialEq, Copy, Clone, Debug, EnumIter, DeriveActiveEnum, Default, Hash, Serialize,)]#[sea_orm(rs_type = "String", db_type = "String(StringLen::None)")]#[serde(rename_all = "snake_case")]pub enum StripeSubscriptionStatus {    #[default]    #[sea_orm(string_value = "incomplete")]    Incomplete,    #[sea_orm(string_value = "incomplete_expired")]    IncompleteExpired,    #[sea_orm(string_value = "trialing")]    Trialing,    #[sea_orm(string_value = "active")]    Active,    #[sea_orm(string_value = "past_due")]    PastDue,    #[sea_orm(string_value = "canceled")]    Canceled,    #[sea_orm(string_value = "unpaid")]    Unpaid,    #[sea_orm(string_value = "paused")]    Paused,} impl StripeSubscriptionStatus {    pub fn is_cancelable(&self) -> bool {        match self {            Self::Trialing | Self::Active | Self::PastDue => true,            Self::Incomplete            | Self::IncompleteExpired            | Self::Canceled            | Self::Unpaid            | Self::Paused => false,        }    }} /// The cancellation reason for a Stripe subscription.////// [Stripe docs](https://docs.stripe.com/api/subscriptions/object#subscription_object-cancellation_details-reason)#[derive(Eq, PartialEq, Copy, Clone, Debug, EnumIter, DeriveActiveEnum, Hash, Serialize)]#[sea_orm(rs_type = "String", db_type = "String(StringLen::None)")]#[serde(rename_all = "snake_case")]pub enum StripeCancellationReason {    #[sea_orm(string_value = "cancellation_requested")]    CancellationRequested,    #[sea_orm(string_value = "payment_disputed")]    PaymentDisputed,    #[sea_orm(string_value = "payment_failed")]    PaymentFailed,}