small upload code refactor

app/controllers/categories_controller.rb

@@ -36,7 +36,7 @@ class CategoriesController < ApplicationController
     guardian.ensure_can_create!(Category)
 
     file = params[:file] || params[:files].first
-    upload = Upload.create_for(current_user.id, file.tempfile, file.original_filename, File.size(file.tempfile))
+    upload = Upload.create_for(current_user.id, file.tempfile, file.original_filename, file.tempfile.size)
     if upload.errors.blank?
       render json: { url: upload.url, width: upload.width, height: upload.height }
     else

app/controllers/uploads_controller.rb

@@ -4,7 +4,7 @@ class UploadsController < ApplicationController
 
   def create
     file = params[:file] || params[:files].first
-    filesize = File.size(file.tempfile)
+    filesize = file.tempfile.size
     upload = Upload.create_for(current_user.id, file.tempfile, file.original_filename, filesize, { content_type: file.content_type })
 
     if upload.errors.empty? && current_user.admin?

app/models/discourse_single_sign_on.rb

@@ -130,12 +130,12 @@ class DiscourseSingleSignOn < SingleSignOn
       sso_record.external_avatar_url != avatar_url)
 
       begin
-        tempfile = FileHelper.download(avatar_url, 1.megabyte, "sso-avatar", true)
+        tempfile = FileHelper.download(avatar_url, SiteSetting.max_image_size_kb.kilobytes, "sso-avatar", true)
 
         ext = FastImage.type(tempfile).to_s
         tempfile.rewind
 
-        upload = Upload.create_for(user.id, tempfile, "external-avatar." + ext, File.size(tempfile.path), { origin: avatar_url })
+        upload = Upload.create_for(user.id, tempfile, "external-avatar." + ext, tempfile.size, { origin: avatar_url })
         user.uploaded_avatar_id = upload.id
 
         unless user.user_avatar

app/models/optimized_image.rb

@@ -15,8 +15,10 @@ class OptimizedImage < ActiveRecord::Base
       thumbnail = nil
     end
 
+    # return the previous thumbnail if any
+    return thumbnail unless thumbnail.nil?
+
     # create the thumbnail otherwise
-    unless thumbnail
     external_copy = Discourse.store.download(upload) if Discourse.store.external?
     original_path = if Discourse.store.external?
       external_copy.try(:path)
@@ -43,7 +45,7 @@ class OptimizedImage < ActiveRecord::Base
         thumbnail = OptimizedImage.create!(
           upload_id: upload.id,
           sha1: Digest::SHA1.file(temp_path).hexdigest,
-            extension: File.extname(temp_path),
+          extension: extension,
           width: width,
           height: height,
           url: "",
@@ -66,7 +68,6 @@ class OptimizedImage < ActiveRecord::Base
 
     # make sure we remove the cached copy from external stores
     external_copy.close! if Discourse.store.external?
-    end
 
     thumbnail
   end

app/models/upload.rb

@@ -50,46 +50,32 @@ class Upload < ActiveRecord::Base
   #   - content_type
   #   - origin
   def self.create_for(user_id, file, filename, filesize, options = {})
-    # compute the sha
     sha1 = Digest::SHA1.file(file).hexdigest
-    # check if the file has already been uploaded
-    upload = Upload.find_by(sha1: sha1)
-    # delete the previously uploaded file if there's been an error
+
+    # do we already have that upload?
+    upload = find_by(sha1: sha1)
+
+    # make sure the previous upload has not failed
     if upload && upload.url.blank?
       upload.destroy
       upload = nil
     end
-    # create the upload
-    unless upload
-      # initialize a new upload
-      upload = Upload.new(
-        user_id: user_id,
-        original_filename: filename,
-        filesize: filesize,
-        sha1: sha1,
-        url: ""
-      )
-      # trim the origin if any
+
+    # return the previous upload if any
+    return upload unless upload.nil?
+
+    # create the upload otherwise
+    upload = Upload.new
+    upload.user_id           = user_id
+    upload.original_filename = filename
+    upload.filesize          = filesize
+    upload.sha1              = sha1
+    upload.url               = ""
     upload.origin            = options[:origin][0...1000] if options[:origin]
 
-      # check the size of the upload
-      if FileHelper.is_image?(filename)
-        if SiteSetting.max_image_size_kb > 0 && filesize >= SiteSetting.max_image_size_kb.kilobytes
-          upload.errors.add(:base, I18n.t("upload.images.too_large", max_size_kb: SiteSetting.max_image_size_kb))
-        else
     # deal with width & height for images
-          upload = Upload.resize_image(filename, file, upload)
-        end
-      else
-        if SiteSetting.max_attachment_size_kb > 0 && filesize >= SiteSetting.max_attachment_size_kb.kilobytes
-          upload.errors.add(:base, I18n.t("upload.attachments.too_large", max_size_kb: SiteSetting.max_attachment_size_kb))
-        end
-      end
+    upload = resize_image(filename, file, upload) if FileHelper.is_image?(filename)
 
-      # make sure there is no error
-      return upload unless upload.errors.empty?
-
-      # create a db record (so we can use the id)
     return upload unless upload.save
 
     # store the file and update its url
@@ -100,7 +86,6 @@ class Upload < ActiveRecord::Base
     else
       upload.errors.add(:url, I18n.t("upload.store_failure", { upload_id: upload.id, user_id: user_id }))
     end
-    end
 
     # return the uploaded file
     upload

app/models/user_avatar.rb

@@ -15,16 +15,14 @@ class UserAvatar < ActiveRecord::Base
 
     self.last_gravatar_download_attempt = Time.new
     gravatar_url = "http://www.gravatar.com/avatar/#{email_hash}.png?s=500&d=404"
-    tempfile = FileHelper.download(gravatar_url, 1.megabyte, "gravatar")
+    tempfile = FileHelper.download(gravatar_url, SiteSetting.max_image_size_kb.kilobytes, "gravatar")
 
-    upload = Upload.create_for(user.id, tempfile, 'gravatar.png', File.size(tempfile.path))
+    upload = Upload.create_for(user.id, tempfile, 'gravatar.png', tempfile.size, { origin: gravatar_url })
 
     if gravatar_upload_id != upload.id
       gravatar_upload.try(:destroy!)
       self.gravatar_upload = upload
       save!
-    else
-      gravatar_upload
     end
   rescue OpenURI::HTTPError
     save!

lib/avatar_upload_service.rb

@@ -14,9 +14,9 @@ class AvatarUploadService
     case source
     when :url
       tmp = FileHelper.download(file, SiteSetting.max_image_size_kb.kilobytes, "discourse-avatar")
-      [tmp, File.basename(URI.parse(file).path), File.size(tmp)]
+      [tmp, File.basename(URI.parse(file).path), tmp.size]
     when :image
-      [file.tempfile, file.original_filename, File.size(file.tempfile)]
+      [file.tempfile, file.original_filename, file.tempfile.size]
     end
   end
 

lib/email/receiver.rb

@@ -224,7 +224,7 @@ module Email
           # read attachment
           File.open(tmp.path, "w+b") { |f| f.write attachment.body.decoded }
           # create the upload for the user
-          upload = Upload.create_for(user.id, tmp, attachment.filename, File.size(tmp))
+          upload = Upload.create_for(user.id, tmp, attachment.filename, tmp.size)
           if upload && upload.errors.empty?
             # TODO: should use the same code as the client to insert attachments
             raw << "\n#{attachment_markdown(upload)}\n"

script/import_scripts/base.rb

@@ -462,7 +462,7 @@ class ImportScripts::Base
     src.close
     tmp.rewind
 
-    Upload.create_for(user_id, tmp, source_filename, File.size(tmp))
+    Upload.create_for(user_id, tmp, source_filename, tmp.size)
   ensure
     tmp.close rescue nil
     tmp.unlink rescue nil