added HW9

app/interactors/tasks/create.rb

@@ -2,7 +2,20 @@ module Tasks
   class Create
     include Interactor::Organizer
 
+    delegate :project, :task, to: :context
+
     organize Tasks::Creates::PrepareParams,
              Tasks::Save
+    after do
+      task = context.task
+      project = task.project
+      owner = project.users.find_by(project_memberships: { role: "owner" })
+      members = project.users.where.not(id: owner.id)
+
+      TaskMailer.task_created_owner(owner, task).deliver_later if owner.present?
+      members.each do |member|
+        TaskMailer.task_created_member(member, task).deliver_later
+      end
+    end
   end
 end

app/interactors/tasks/destroy.rb

@@ -4,8 +4,20 @@ class Destroy
 
     delegate :task, to: :context
 
+    before do
+      context.task = task
+      context.project = task.project
+      context.users = User.where(id: task.project.users.pluck(:id))
+    end
+
     def call
       task.destroy
     end
+
+    after do
+      context.users.each do |user|
+        TaskMailer.task_deleted(user).deliver_later
+      end
+    end
   end
 end

app/interactors/tasks/update.rb

@@ -3,5 +3,15 @@ class Update
     include Interactor::Organizer
 
     organize Tasks::Save
+
+    after do
+      task = context.task
+      project = task.project
+      users = project.users
+
+      users.each do |user|
+        TaskMailer.task_updated(user, task).deliver_later
+      end
+    end
   end
 end

app/mailers/task_mailer.rb

@@ -0,0 +1,29 @@
+class TaskMailer < ApplicationMailer
+  def task_created_owner(user, task)
+    @user = user
+    @task = task
+    @project = task.project
+
+    mail(to: @user.email, subject: "A new task has been successfully created")
+  end
+
+  def task_created_member(user, task)
+    @user = user
+    @task = task
+    @project = task.project
+
+    mail(to: @user.email, subject: "A new task has been created in your project")
+  end
+
+  def task_updated(user, task)
+    @user = user
+    @task = task
+    @project = task.project
+    mail(to: @user.email, subject: "A task in your project has been updated")
+  end
+
+  def task_deleted(user)
+    @user = user
+    mail(to: @user.email, subject: "A task in your project has been deleted")
+  end
+end

app/views/task_mailer/task_created_member.html.erb

@@ -0,0 +1,7 @@
+<h1>A new task has been created in your project!</h1>
+<ul>
+  <li><strong>Task Name:</strong> <%= @task.name %></li>
+  <li><strong>Description:</strong> <%= @task.description %></li>
+  <li><strong>Deadline:</strong> <%= @task.deadline_at.strftime('%B %d, %Y') %></li>
+  <li><strong>Status:</strong> <%= @task.status.text %></li>
+</ul>

app/views/task_mailer/task_created_owner.html.erb

@@ -0,0 +1,8 @@
+<h1>A new task "<%= @task.name %>" has been successfully created in your project "<%= @project.name %>"!</h1>
+<p>Only for project owner</p>
+<ul>
+  <li><strong>Task Name:</strong> <%= @task.name %></li>
+  <li><strong>Description:</strong> <%= @task.description %></li>
+  <li><strong>Deadline:</strong> <%= @task.deadline_at.strftime('%B %d, %Y') %></li>
+  <li><strong>Status:</strong> <%= @task.status.text %></li>
+</ul>

app/views/task_mailer/task_deleted.html.erb

@@ -0,0 +1,2 @@
+<h1>A task in your project has been deleted!</h1>
+<p>The task "<%= @task.name %>" in the project "<%= @project.name %>" has been deleted.</p>

app/views/task_mailer/task_updated.html.erb

@@ -0,0 +1,2 @@
+<h1>A task in your project has been updated!</h1>
+<p>The task "<%= @task.name %>" in the project "<%= @project.name %>" has recently been updated.</p>