39 lines
931 B
Go
39 lines
931 B
Go
package backend
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import (
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"fmt"
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"io"
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"os"
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"github.com/chai2010/webp"
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"github.com/disintegration/imaging"
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"github.com/google/uuid"
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)
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func SaveImage(c *Config, src io.Reader) (string, error) {
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img, err := imaging.Decode(src, imaging.AutoOrientation(true))
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if err != nil {
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return "", fmt.Errorf("error decoding image: %v", err)
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}
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if img.Bounds().Dy() > c.MaxImgHeight {
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img = imaging.Resize(img, 0, c.MaxImgHeight, imaging.Lanczos)
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}
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if img.Bounds().Dx() > c.MaxImgWidth {
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img = imaging.Resize(img, c.MaxImgWidth, 0, imaging.Lanczos)
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}
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filename := fmt.Sprint(uuid.New(), ".webp")
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file, err := os.Create(c.PicsDir + "/" + filename)
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if err != nil {
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return "", fmt.Errorf("error creating new image file: %v", err)
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}
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defer file.Close()
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if err = webp.Encode(file, img, &webp.Options{Lossless: true}); err != nil {
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return "", fmt.Errorf("error encoding image as webp: %v", err)
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}
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return filename, nil
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}
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