// Package epuboptions Options for EPUB creation.
package epuboptions

import "fmt"

type Crop struct {
	Enabled                 bool
	Left, Up, Right, Bottom int
	Limit                   int
}

type Color struct {
	Foreground, Background string
}

type View struct {
	Width, Height int
	AspectRatio   float64
	PortraitOnly  bool
	Color         Color
}

type Image struct {
	Crop                   *Crop
	Quality                int
	Brightness             int
	Contrast               int
	AutoContrast           bool
	AutoRotate             bool
	AutoSplitDoublePage    bool
	KeepDoublePageIfSplit  bool
	NoBlankImage           bool
	Manga                  bool
	HasCover               bool
	View                   *View
	GrayScale              bool
	GrayScaleMode          int
	Resize                 bool
	Format                 string
	AppleBookCompatibility bool
}

type Options struct {
	Input                      string
	Output                     string
	Title                      string
	TitlePage                  int
	Author                     string
	LimitMb                    int
	StripFirstDirectoryFromToc bool
	Dry                        bool
	DryVerbose                 bool
	SortPathMode               int
	Quiet                      bool
	Json                       bool
	Workers                    int
	Image                      *Image
}

func (o *Options) WorkersRatio(pct int) (nbWorkers int) {
	nbWorkers = o.Workers * pct / 100
	if nbWorkers < 1 {
		nbWorkers = 1
	}
	return
}

func (o *Options) ImgStorage() string {
	return fmt.Sprintf("%s.tmp", o.Output)
}