package models

import (
	"time"

	"gorm.io/gorm"
)

// BaseModel contains common columns for all tables with ID, CreatedAt, UpdatedAt
type BaseModel struct {
	ID        uint           `gorm:"primaryKey" json:"id"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
}

// BeforeCreate sets timestamps before creating a record
func (b *BaseModel) BeforeCreate(tx *gorm.DB) error {
	now := time.Now().UTC()
	if b.CreatedAt.IsZero() {
		b.CreatedAt = now
	}
	if b.UpdatedAt.IsZero() {
		b.UpdatedAt = now
	}
	return nil
}

// BeforeUpdate sets updated_at before updating a record
func (b *BaseModel) BeforeUpdate(tx *gorm.DB) error {
	b.UpdatedAt = time.Now().UTC()
	return nil
}