add: applied join project

app/services/projects/refuse_join_service.rb

@@ -0,0 +1,39 @@
+class Projects::RefuseJoinService < ApplicationService
+  attr_accessor :applied_project, :owner
+  attr_reader :user, :project 
+
+  def initialize(user, applied_project)
+    @user   = user
+    @project = applied_project.project
+    @applied_project = applied_project
+  end
+
+  def call 
+    Rails.logger.info("###### Project refuse_join_service begin ######")
+    validate!
+    update_apply 
+    send_apply_message
+    Rails.logger.info("###### Project refuse_join_service end ######")
+
+    return @applied_project
+  end
+
+  private 
+  def validate! 
+    raise Error, '该申请已被拒绝' if @applied_project.refused?
+    raise Error, '该申请不存在' unless @applied_project.present?
+    raise Error, '未拥有接受申请权限' unless is_permit_operator
+  end
+
+  def is_permit_operator
+    return @user.admin? || @project.manager?(@user)
+  end
+
+  def update_apply 
+    @applied_project.update!(status: 'refused')
+  end
+
+  def send_apply_message 
+    SendJoinProjectAppliedMessageJob.perform_now(@applied_project, @user, 'failure')
+  end
+end