// In generated src/entities/parent.rs

#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
pub enum Relation {
    #[sea_orm(has_many = "super::child::Entity")]
    Child,
}

use sea_orm_migration::prelude::*;

#[derive(DeriveMigrationName)]
pub struct Migration;

#[async_trait::async_trait]
impl MigrationTrait for Migration {
    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .create_table(
                Table::create()
                    .table(Parent::Table)
                    .if_not_exists()
                    .col(
                        ColumnDef::new(Parent::Id)
                            .integer()
                            .not_null()
                            .auto_increment()
                            .primary_key(),
                    )
                    .to_owned(),
            )
            .await?;
        manager
            .create_table(
                Table::create()
                    .table(Child::Table)
                    .if_not_exists()
                    .col(ColumnDef::new(Child::Id).integer().not_null().primary_key())
                    .foreign_key(
                        ForeignKey::create()
                            .from(Child::Table, Child::Id)
                            .to(Parent::Table, Parent::Id),
                    )
                    .to_owned(),
            )
            .await
    }

    async fn down(&self, _: &SchemaManager) -> Result<(), DbErr> {
        unimplemented!();
    }
}

#[derive(DeriveIden)]
pub enum Parent {
    Table,
    Id,
}

#[derive(DeriveIden)]
pub enum Child {
    Table,
    Id,
}