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package image
import (
"bytes"
"fmt"
"image"
"image/png"
"os"
"strings"
"github.com/charmbracelet/lipgloss"
"github.com/disintegration/imaging"
"github.com/lucasb-eyer/go-colorful"
_ "golang.org/x/image/webp"
)
func ValidateFileSize(filePath string, sizeLimit int64) (bool, error) {
fileInfo, err := os.Stat(filePath)
if err != nil {
return false, fmt.Errorf("error getting file info: %w", err)
}
if fileInfo.Size() > sizeLimit {
return true, nil
}
return false, nil
}
func ToString(width int, img image.Image) string {
img = imaging.Resize(img, width, 0, imaging.Lanczos)
b := img.Bounds()
imageWidth := b.Max.X
h := b.Max.Y
str := strings.Builder{}
for heightCounter := 0; heightCounter < h; heightCounter += 2 {
for x := range imageWidth {
c1, _ := colorful.MakeColor(img.At(x, heightCounter))
color1 := lipgloss.Color(c1.Hex())
var color2 lipgloss.Color
if heightCounter+1 < h {
c2, _ := colorful.MakeColor(img.At(x, heightCounter+1))
color2 = lipgloss.Color(c2.Hex())
} else {
color2 = color1
}
str.WriteString(lipgloss.NewStyle().Foreground(color1).
Background(color2).Render("▀"))
}
str.WriteString("\n")
}
return str.String()
}
func ImagePreview(width int, filename string) (string, error) {
imageContent, err := os.Open(filename)
if err != nil {
return "", err
}
defer imageContent.Close()
img, _, err := image.Decode(imageContent)
if err != nil {
return "", err
}
imageString := ToString(width, img)
return imageString, nil
}
func ImageToBytes(image image.Image) ([]byte, error) {
buf := new(bytes.Buffer)
err := png.Encode(buf, image)
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}
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