New API: create file in repo

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

lib/api/api.rb

@@ -39,5 +39,6 @@ module API
     mount DeployKeys
     mount ProjectHooks
     mount Services
+    mount Files
   end
 end

lib/api/files.rb

+module API
+  # Projects API
+  class Files < Grape::API
+    before { authenticate! }
+    before { authorize! :push_code, user_project }
+
+    resource :projects do
+      # Create new file in repository
+      #
+      # Parameters:
+      #   file_name (required) - The name of new file. Ex. class.rb
+      #   file_path (optiona) - The path to new file. Ex. lib/
+      #   branch_name (required) - The name of branch
+      #   content (required) - File content
+      #   commit_message (required) - Commit message
+      #
+      # Example Request:
+      #   POST /projects/:id/repository/files
+      post ":id/repository/files" do
+        required_attributes! [:file_name, :branch_name, :content]
+        attrs = attributes_for_keys [:file_name, :file_path, :branch_name, :content]
+        branch_name = attrs.delete(:branch_name)
+        file_path = attrs.delete(:file_path)
+        result = ::Files::CreateContext.new(user_project, current_user, attrs, branch_name, file_path).execute
+
+        if result[:status] == :success
+          status(201)
+
+          {
+            file_name: attrs[:file_name],
+            file_path: file_path,
+            branch_name: branch_name
+          }
+        else
+          render_api_error!(result[:error], 400)
+        end
+      end
+    end
+  end
+end
+

lib/gitlab/satellite/files/new_file_action.rb

@@ -17,7 +17,7 @@ module Gitlab
           repo.git.checkout({raise: true, timeout: true, b: true}, ref, "origin/#{ref}")
 
           # update the file in the satellite's working dir
-          file_path_in_satellite = File.join(repo.working_dir, file_path, file_name)
+          file_path_in_satellite = File.join(repo.working_dir, file_path || '', file_name)
           File.open(file_path_in_satellite, 'w') { |f| f.write(content) }
 
           # add new file