forked from heierbtc/satdress-mirror
41 lines
809 B
Go
41 lines
809 B
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"encoding/base64"
|
||
|
|
"errors"
|
||
|
|
"fmt"
|
||
|
|
"image"
|
||
|
|
"image/jpeg"
|
||
|
|
"net/http"
|
||
|
|
"strconv"
|
||
|
|
|
||
|
|
"github.com/nfnt/resize"
|
||
|
|
)
|
||
|
|
|
||
|
|
func base64ImageFromURL(url string) (string, error) {
|
||
|
|
resp, err := http.Get(url)
|
||
|
|
if err != nil {
|
||
|
|
return "", err
|
||
|
|
}
|
||
|
|
defer resp.Body.Close()
|
||
|
|
|
||
|
|
if resp.StatusCode >= 300 {
|
||
|
|
return "", errors.New("image returned status " + strconv.Itoa(resp.StatusCode))
|
||
|
|
}
|
||
|
|
|
||
|
|
img, _, err := image.Decode(resp.Body)
|
||
|
|
if err != nil {
|
||
|
|
return "", fmt.Errorf("failed to decode image from %s: %w", url, err)
|
||
|
|
}
|
||
|
|
|
||
|
|
img = resize.Resize(160, 0, img, resize.NearestNeighbor)
|
||
|
|
out := &bytes.Buffer{}
|
||
|
|
err = jpeg.Encode(out, img, &jpeg.Options{60})
|
||
|
|
if err != nil {
|
||
|
|
return "", fmt.Errorf("failed to encode image: %w", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
return base64.StdEncoding.EncodeToString(out.Bytes()), nil
|
||
|
|
}
|