andri.dk
[READ-ONLY] Mirror of https://github.com/andrioid/s3preview. Preview serving microservice for s3. Generates and uploads any missing thumbnails. Redirects to existing.
1package main
2
3import (
4 "github.com/disintegration/imaging"
5 "image"
6)
7
8// Does Preview Exist? (objectname, type)
9// Read Original (objectname)
10// Create PreviewBase, original for image files (objectname) (image)
11// Generate Preview (io.Reader, previewType) (*image, type)
12// Upload Preview (path)
13// Redirect to Preview (objectname, type)
14
15// When do I need to buffer Image
16// - Not when creating on the fly preview
17// - When creating multiple preview files
18// - When preview base has to be created from content
19
20// Translates previewTypes to Imaging functions. Returns image interface
21func Preview(oimg *image.Image, opt PreviewOptions) (img image.Image, err error) {
22
23 if err != nil {
24 return img, err
25 }
26
27 if opt.Method == "resize" {
28 img = imaging.Resize(*oimg, opt.Width, opt.Height, imaging.Box)
29 } else {
30 img = imaging.Thumbnail(*oimg, opt.Width, opt.Height, imaging.Linear)
31 }
32
33 return // img and err are implicit
34}
35
36// Path of Preview file
37// - Used to check if exists, uploading, redirecting
38func PreviewPath(objname string, ptype string) (path string) {
39 return ""
40}
41
42func Generate() {
43
44}