52 lines
1 KiB
Go
52 lines
1 KiB
Go
package api
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import (
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"bufio"
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"encoding/base64"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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func HandleImageUpload(data *string, directory string, filename string) (string, error) {
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split := strings.Split(*data, ";base64,")
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header := split[0]
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imageData, err := base64.StdEncoding.DecodeString(split[1])
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ext, _ := strings.CutPrefix(header, "data:image/")
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switch ext {
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case "png":
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case "jpg":
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case "jpeg":
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default:
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return "", errors.New("Invalid image type. Allowed: .png, .jpg, .jpeg")
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}
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filename = fmt.Sprintf("%s.%s", filename, ext)
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// ensure directory exists
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os.MkdirAll(directory, os.ModePerm)
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imagePath := filepath.Join(directory, filename)
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file, err := os.Create(imagePath)
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if err != nil {
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return "", err
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}
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defer file.Close()
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// TODO: generate compressed versions of image (512x512?)
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buffer := bufio.NewWriter(file)
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_, err = buffer.Write(imageData)
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if err != nil {
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return "", nil
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}
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if err := buffer.Flush(); err != nil {
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return "", nil
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}
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return filename, nil
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}
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