package storage

import "time"

// MaxImageSize is the largest image payload accepted by storage, in bytes.
const MaxImageSize = 10 << 20

// ImageModelInterface persists garden-owned image data and assignment history.
type ImageModelInterface interface {
	Insert(image Image) (Image, error)
	Get(gardenID, id int) (Image, error)
	GetAllForGarden(gardenID int, filter ImageFilter) ([]Image, error)
	CountForGarden(gardenID int) (int, error)
	RecordAssignment(change ImageAssignment) error
}

// Image is a binary image stored in a garden's reusable media library.
type Image struct {
	ID        int       `json:"id"`
	GardenID  int       `json:"garden_id"`
	FileName  string    `json:"file_name"`
	MediaType string    `json:"media_type"`
	Size      int64     `json:"size"`
	Source    string    `json:"source"`
	CreatedBy int       `json:"created_by"`
	CreatedAt time.Time `json:"created_at"`
	Data      []byte    `json:"-"`
}

// ImageFilter restricts image-library queries by filename or media type.
type ImageFilter struct {
	Source string
	Query  string
}

// ImageAssignment records an image change on a garden entity.
type ImageAssignment struct {
	GardenID        int
	EntityType      string
	EntityID        int
	PreviousImageID *int
	ImageID         *int
	ChangedBy       int
}