package base64Captcha

import (
	"github.com/golang/freetype"
	"github.com/golang/freetype/truetype"
	"math/rand"
)

var fontsSimple = loadFontsByNames([]string{
	"fonts/3Dumb.ttf",
	"fonts/ApothecaryFont.ttf",
	"fonts/Comismsh.ttf",
	"fonts/DENNEthree-dee.ttf",
	"fonts/DeborahFancyDress.ttf",
	"fonts/Flim-Flam.ttf",
	"fonts/RitaSmith.ttf",
	"fonts/actionj.ttf",
	"fonts/chromohv.ttf",
})

//var fontemoji = loadFontByName("fonts/seguiemj.ttf")
var fontsAll = append(fontsSimple, fontChinese)
var fontChinese = loadFontByName("fonts/wqy-microhei.ttc")

func loadFontByName(name string) *truetype.Font {
	fontBytes, err := Asset(name)
	if err != nil {
		panic(err)
	}
	//font file bytes to trueTypeFont
	trueTypeFont, err := freetype.ParseFont(fontBytes)
	if err != nil {
		panic(err)
	}
	return trueTypeFont
}

//loadFontsByNames import fonts from dir.
//make the simple-font(RitaSmith.ttf) the first font of trueTypeFonts.
func loadFontsByNames(assetFontNames []string) []*truetype.Font {
	fonts := make([]*truetype.Font, 0)
	for _, assetName := range assetFontNames {
		f := loadFontByName(assetName)
		fonts = append(fonts, f)
	}
	return fonts
}

//randFontFrom choose random font family.选择随机的字体
func randFontFrom(fonts []*truetype.Font) *truetype.Font {
	fontCount := len(fonts)
	index := rand.Intn(fontCount)
	return fonts[index]
}

var digitFontData = [][]byte{
	{ // 0
		0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
		0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0,
		0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0,
		1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1,
		0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0,
		0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
	},
	{ // 1
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
		0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0,
		0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	},
	{ // 2
		0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0,
		0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0,
		0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0,
		0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	},
	{ // 3
		0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0,
		0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0,
		0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
		1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
	},
	{ // 4
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0,
		0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
		0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0,
		1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
	},
	{ // 5
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0,
	},
	{ // 6
		0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0,
		0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0,
		0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
		0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
		1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0,
		1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0,
		1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0,
		1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1,
		0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0,
		0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
	},
	{ // 7
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
		0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
		0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
		0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
		0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
		0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0,
		0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0,
		0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0,
	},
	{ // 8
		0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
		0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
		0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
		0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0,
		0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0,
		1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
		0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
	},
	{ // 9
		0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0,
		0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0,
		1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1,
		0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1,
		0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1,
		0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0,
		0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0,
		0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
		0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
	},
}