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

#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize, utoipa::ToSchema)]
#[sea_orm(table_name = "BAL")]
#[schema(title="Bal", as=entities::BAL)]
pub struct Model {
    #[sea_orm(primary_key, auto_increment = true)]
    pub id: u32,
    pub user_id: u32,
    pub name: String,
    pub state: BalState,
    pub start_timestamp: i64,
    pub end_timestamp: i64
}

#[derive(Clone, Debug, PartialEq, Eq, EnumIter, DeriveActiveEnum, Serialize, Deserialize, utoipa::ToSchema)]
#[sea_orm(rs_type = "String", db_type = "String(StringLen::N(1))")]
pub enum BalState {
    #[sea_orm(string_value = "P")]
    Pending,
    #[sea_orm(string_value = "O")]
    Ongoing,
    #[sea_orm(string_value = "E")]
    Ended
}

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

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

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
        }
    }
}

impl ActiveModelBehavior for ActiveModel {}