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

#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize, utoipa::ToSchema)]
#[sea_orm(table_name = "BookInstances")]
#[schema(title="BookInstance", as=entities::BookInstance)]
pub struct Model {
    #[sea_orm(primary_key, auto_increment = true)]
    pub id: u32,
    pub price: f32,
    pub sold_price: Option<f32>,
    pub available: bool,
    pub book_id: u32,
    pub owner_id: u32,
    pub bal_id: u32
}

impl Entity {
    pub async fn get_by_id<C>(db_conn: &C, id: u32) -> Option<Model>
        where C: ConnectionTrait,
    {
        match Self::find_by_id(id).one(db_conn).await {
            Ok(res) => res,
            Err(_) => None
        }
    }
}

#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
pub enum Relation {
    #[sea_orm(
        belongs_to = "super::book::Entity",
        from = "Column::BookId",
        to = "super::book::Column::Id"
    )]
    Book,
    #[sea_orm(
        belongs_to = "super::owner::Entity",
        from = "Column::OwnerId",
        to = "super::owner::Column::Id"
    )]
    Owner,
    #[sea_orm(
        belongs_to = "super::bal::Entity",
        from = "Column::BalId",
        to = "super::bal::Column::Id"
    )]
    Bal,
}

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

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

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

impl ActiveModelBehavior for ActiveModel {}