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

#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
#[sea_orm(table_name = "process_instances")]
pub struct Model {
    #[sea_orm(primary_key, auto_increment = false)]
    pub id: Uuid,
    pub tenant_id: Uuid,
    pub definition_id: Uuid,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub business_key: Option<String>,
    pub status: String,
    pub started_by: Uuid,
    pub started_at: DateTimeUtc,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub completed_at: Option<DateTimeUtc>,
    pub created_at: DateTimeUtc,
    pub updated_at: DateTimeUtc,
    pub created_by: Uuid,
    pub updated_by: Uuid,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub deleted_at: Option<DateTimeUtc>,
    pub version: i32,
}

#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
pub enum Relation {
    #[sea_orm(
        belongs_to = "super::process_definition::Entity",
        from = "Column::DefinitionId",
        to = "super::process_definition::Column::Id"
    )]
    ProcessDefinition,
    #[sea_orm(has_many = "super::token::Entity")]
    Token,
    #[sea_orm(has_many = "super::task::Entity")]
    Task,
}

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

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

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

impl ActiveModelBehavior for ActiveModel {}