package models

import (
	"errors"

	"github.com/google/uuid"
	"github.com/uptrace/bun"
)

type ShortcodeType string

const (
	ShortcodeMedia ShortcodeType = "media"
	ShortcodeValue ShortcodeType = "value"
)

type Shortcode struct {
	bun.BaseModel `bun:"table:shortcodes,alias:sc"`

	ID      int64         `bun:"id,pk,autoincrement" json:"id"`   // Primary key
	Code    string        `bun:"code,notnull,unique" json:"code"` // The shortcode value
	Type    ShortcodeType `bun:"shortcode_type,notnull" json:"type"`
	Value   *string       `bun:"value" json:"value,omitempty"`
	MediaID *uuid.UUID    `bun:"media_id,type:uuid" json:"media_id,omitempty"`           // Nullable reference to another table's ID
	Media   *Media        `bun:"rel:belongs-to,join:media_id=id" json:"media,omitempty"` // Relation to Media
}

func (s *Shortcode) Validate() error {
	if s.Value != nil && s.MediaID != nil {
		return errors.New("both value and media_id cannot be set at the same time")
	}
	if s.Value == nil && s.MediaID == nil {
		return errors.New("either value or media_id must be set")
	}
	return nil
}