package lagoon

import (
	"fmt"

	"gorm.io/gorm"
)

// HasBeforeValidate is the Winter beforeValidate hook. GORM does not
// dispatch this name; later validation wiring type-asserts it.
type HasBeforeValidate interface {
	BeforeValidate(tx *gorm.DB) error
}

// HasBeforeCreate matches GORM's native BeforeCreate hook so a model
// needs no adapter. GORM dispatches it by method name.
type HasBeforeCreate interface {
	BeforeCreate(tx *gorm.DB) error
}

// HasBeforeSave matches GORM's native BeforeSave hook so a model
// needs no adapter. GORM dispatches it by method name.
type HasBeforeSave interface {
	BeforeSave(tx *gorm.DB) error
}

// HasBeforeDelete matches GORM's native BeforeDelete hook so a model
// needs no adapter. GORM dispatches it by method name.
type HasBeforeDelete interface {
	BeforeDelete(tx *gorm.DB) error
}

// HasAfterDelete matches GORM's native AfterDelete hook so a model
// needs no adapter. GORM dispatches it by method name.
type HasAfterDelete interface {
	AfterDelete(tx *gorm.DB) error
}

// WithSoftDeleteCascade names the "Collection cascades to Album" pattern
// (DATA-03). Callers invoke it from their own BeforeDelete method: GORM
// already runs BeforeDelete inside the parent Delete transaction, so this
// does not open a new transaction. A cascade error aborts the parent delete.
func WithSoftDeleteCascade(tx *gorm.DB, cascade func(tx *gorm.DB) error) error {
	if tx == nil {
		return fmt.Errorf("lagoon: soft-delete cascade tx is nil")
	}
	return cascade(tx)
}