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(UserRoles::Table)
                    .if_not_exists()
                    .col(ColumnDef::new(UserRoles::UserId).uuid().not_null())
                    .col(ColumnDef::new(UserRoles::RoleId).uuid().not_null())
                    .col(ColumnDef::new(UserRoles::TenantId).uuid().not_null())
                    .col(
                        ColumnDef::new(UserRoles::CreatedAt)
                            .timestamp_with_time_zone()
                            .not_null()
                            .default(Expr::current_timestamp()),
                    )
                    .col(
                        ColumnDef::new(UserRoles::UpdatedAt)
                            .timestamp_with_time_zone()
                            .not_null()
                            .default(Expr::current_timestamp()),
                    )
                    .col(ColumnDef::new(UserRoles::CreatedBy).uuid().not_null())
                    .col(ColumnDef::new(UserRoles::UpdatedBy).uuid().not_null())
                    .col(
                        ColumnDef::new(UserRoles::DeletedAt)
                            .timestamp_with_time_zone()
                            .null(),
                    )
                    .col(
                        ColumnDef::new(UserRoles::Version)
                            .integer()
                            .not_null()
                            .default(1),
                    )
                    .primary_key(
                        Index::create()
                            .col(UserRoles::UserId)
                            .col(UserRoles::RoleId),
                    )
                    .foreign_key(
                        &mut ForeignKey::create()
                            .name("fk_user_roles_user_id")
                            .from(UserRoles::Table, UserRoles::UserId)
                            .to(Users::Table, Users::Id)
                            .on_delete(ForeignKeyAction::Cascade)
                            .to_owned(),
                    )
                    .foreign_key(
                        &mut ForeignKey::create()
                            .name("fk_user_roles_role_id")
                            .from(UserRoles::Table, UserRoles::RoleId)
                            .to(Roles::Table, Roles::Id)
                            .on_delete(ForeignKeyAction::Cascade)
                            .to_owned(),
                    )
                    .to_owned(),
            )
            .await?;

        manager
            .create_index(
                Index::create()
                    .name("idx_user_roles_tenant_id")
                    .table(UserRoles::Table)
                    .col(UserRoles::TenantId)
                    .to_owned(),
            )
            .await?;

        Ok(())
    }

    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .drop_table(Table::drop().table(UserRoles::Table).to_owned())
            .await
    }
}

#[derive(DeriveIden)]
enum UserRoles {
    Table,
    UserId,
    RoleId,
    TenantId,
    CreatedAt,
    UpdatedAt,
    CreatedBy,
    UpdatedBy,
    DeletedAt,
    Version,
}

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

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