website/pkg/controller/photo/upload.go

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package photo
import (
"bytes"
"io"
"net/http"
"os"
"path/filepath"
"git.kirsle.net/apps/gosocial/pkg/log"
"git.kirsle.net/apps/gosocial/pkg/models"
"git.kirsle.net/apps/gosocial/pkg/photo"
"git.kirsle.net/apps/gosocial/pkg/session"
"git.kirsle.net/apps/gosocial/pkg/templates"
)
// Upload photos controller.
func Upload() http.HandlerFunc {
tmpl := templates.Must("photo/upload.html")
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var vars = map[string]interface{}{
"Intent": r.FormValue("intent"),
"NeedsCrop": false,
}
// Query string parameters: what is the intent of this photo upload?
// - If profile picture, the user will crop their image before posting it.
// - If regular photo, user simply picks a picture and doesn't need to crop it.
if vars["Intent"] == "profile_pic" {
vars["NeedsCrop"] = true
}
user, err := session.CurrentUser(r)
if err != nil {
session.FlashError(w, r, "Unexpected error: couldn't get CurrentUser")
}
// Are they POSTing?
if r.Method == http.MethodPost {
var (
caption = r.PostFormValue("caption")
isExplicit = r.PostFormValue("explicit") == "true"
visibility = r.PostFormValue("visibility")
isGallery = r.PostFormValue("gallery") == "true"
cropCoords = r.PostFormValue("crop")
confirm1 = r.PostFormValue("confirm1") == "true"
confirm2 = r.PostFormValue("confirm2") == "true"
)
// They checked both boxes. The browser shouldn't allow them to
// post but validate it here anyway...
if !confirm1 || !confirm2 {
session.FlashError(w, r, "You must agree to the terms to upload this picture.")
templates.Redirect(w, r.URL.Path)
return
}
// Parse and validate crop coordinates.
var crop []int
if vars["NeedsCrop"] == true {
crop = photo.ParseCropCoords(cropCoords)
}
log.Error("parsed crop coords: %+v", crop)
// Get their file upload.
file, header, err := r.FormFile("file")
if err != nil {
session.FlashError(w, r, "Error receiving your file: %s", err)
templates.Redirect(w, r.URL.Path)
return
}
// Read the file contents.
log.Debug("Receiving uploaded file (%d bytes): %s", header.Size, header.Filename)
var buf bytes.Buffer
io.Copy(&buf, file)
filename, cropFilename, err := photo.UploadPhoto(photo.UploadConfig{
User: user,
Extension: filepath.Ext(header.Filename),
Data: buf.Bytes(),
Crop: crop,
})
if err != nil {
session.FlashError(w, r, "Error in UploadPhoto: %s", err)
templates.Redirect(w, r.URL.Path)
return
}
// Configuration for the DB entry.
ptmpl := models.Photo{
UserID: user.ID,
Filename: filename,
CroppedFilename: cropFilename,
Caption: caption,
Visibility: models.PhotoVisibility(visibility),
Gallery: isGallery,
Explicit: isExplicit,
}
// Get the filesize.
if stat, err := os.Stat(photo.DiskPath(filename)); err == nil {
ptmpl.Filesize = stat.Size()
}
// Create it in DB!
p, err := models.CreatePhoto(ptmpl)
if err != nil {
session.FlashError(w, r, "Couldn't create Photo in DB: %s", err)
} else {
log.Info("New photo! %+v", p)
}
// Are we uploading a profile pic? If so, set the user's pic now.
if vars["Intent"] == "profile_pic" {
log.Info("User %s is setting their profile picture", user.Username)
user.ProfilePhoto = *p
user.Save()
}
session.Flash(w, r, "Your photo has been uploaded successfully.")
templates.Redirect(w, "/photo/u/"+user.Username)
return
}
if err := tmpl.Execute(w, r, vars); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
})
}