package image

import (
	"io"
	"time"
)

type VariantRepository interface {
	List() ([]Variant, error)
	Get(name string) (Variant, error)
	Create(variant Variant) (Variant, error)
	Update(variant Variant) (Variant, error)
	Delete(name string) error
}

type VariantFileRepository interface {
	Find(variantName string, sourceName string) (VariantFile, bool, error)
	Save(file VariantFile) (VariantFile, error)
	ListByVariant(variantName string) ([]VariantFile, error)
	ListBySource(sourceName string) ([]VariantFile, error)
	Delete(id uint32) error
	Totals() (map[string]VariantFileTotals, error)
	TotalsBySource() (map[string]VariantFileTotals, error)
}

type VariantCacheRepository interface {
	UnusedTotals(filter UnusedFilter) (VariantFileTotals, error)
	TopSources(limit int) ([]SourceTotals, error)
	ListPage(filter VariantFileFilter, afterID uint32, limit int) ([]VariantFile, error)
}

type VariantUsageRepository interface {
	Record(batch VariantUsageBatch) error
	RejectedSince(day time.Time) (int, error)
}

type VariantUsageTracker interface {
	RecordHit(variantName string, sourceName string)
	RecordRejection()
	Flush() error
}

type RenderedVariant struct {
	Content     []byte
	ContentType string
}

type VariantRenderer interface {
	DeclaredSize(source io.Reader) (width int, height int, err error)
	Render(source io.Reader, settings VariantSettings) (RenderedVariant, error)
	EncodableFormats() []VariantFormat
}