implemented attachment downloading

conference.go

@@ -14,8 +14,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io"
-	"mime/multipart"
 	"net/http"
 	"reflect"
 	"strconv"
@@ -277,61 +275,6 @@ func NewTopic(ctxt ui.AmContext) (string, any, error) {
 	return ui.ErrorPage(ctxt, errors.New("invalid button clicked on form"))
 }
 
-// slurpFile reads the contrents of a multipart.File into memory.
-func slurpFile(file *multipart.FileHeader) ([]byte, error) {
-	f, err := file.Open()
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-	return io.ReadAll(f)
-}
-
-/* AttachmentUpload adds an attachment to a post.
- * Parameters:
- *     ctxt - The AmContext for the request.
- * Returns:
- *     Command string dictating what to be rendered.
- *     Data as a parameter for the command string.
- *     Standard Go error status.
- */
-func AttachmentUpload(ctxt ui.AmContext) (string, any, error) {
-	target := ctxt.FormField("tgt")
-	postidStr := ctxt.FormField("post")
-	postId, err := strconv.ParseInt(postidStr, 10, 64)
-	if err != nil {
-		return ui.ErrorPage(ctxt, fmt.Errorf("internal error converting postID: %v", err))
-	}
-	if ctxt.FormFieldIsSet("upload") {
-		file, err := ctxt.FormFile("thefile")
-		if err == nil {
-			if file.Size <= (1024 * 1024) { // 1 Mb
-				var post *database.PostHeader
-				post, err = database.AmGetPost(ctxt.Ctx(), postId)
-				if err == nil {
-					var data []byte
-					data, err = slurpFile(file)
-					if err == nil {
-						err = post.SetAttachment(ctxt.Ctx(), ctxt.CurrentUser(), file.Filename, file.Header.Get("Content-Type"), int32(file.Size), data)
-						if err == nil {
-							return "redirect", target, nil
-						}
-					}
-				}
-			} else {
-				err = errors.New("the file is too large to be attached")
-			}
-		}
-
-		ctxt.VarMap().Set("target", target)
-		ctxt.VarMap().Set("post", postId)
-		ctxt.VarMap().Set("amsterdam_pageTitle", "Upload Attachment")
-		ctxt.VarMap().Set("errorMessage", err.Error())
-		return "framed_template", "attachment_upload.jet", nil
-	}
-	return ui.ErrorPage(ctxt, errors.New("invalid button clicked on form"))
-}
-
 /* breakRange breaks up a post range into two elements.
  * Parameters:
  *     topic - The topic within which the range is defined.