add change of session details email

app/mailers/session_invitation_mailer.rb

@@ -47,6 +47,22 @@ def attending sessions, member, invitation
     end
   end
 
+  def change_of_details sessions, sponsor, member, invitation, title="Change of details"
+    @session = sessions
+    @sponsor = sponsor
+    @host_address = AddressDecorator.decorate(@session.host.address)
+    @member = member
+    @invitation = invitation
+
+    load_attachments
+
+    subject = "#{title}: #{@session.title} by Codebar - #{l(@session.date_and_time, format: :email_title)}"
+
+    mail(mail_args(member, subject)) do |format|
+      format.html
+    end
+  end
+
   def remind_student session, member, invitation
     @session = session
     @host_address = AddressDecorator.decorate(@session.host.address)

app/models/invitation_manager.rb

@@ -31,4 +31,10 @@ def self.send_spots_available session
       invitation.send_spots_available
     end
   end
+
+  def self.send_change_of_details session, title="Change of details", sponsor
+    session.invitations.accepted.map do |invitation|
+      SessionInvitationMailer.change_of_details(session, sponsor, invitation.member, invitation, title).deliver
+    end
+  end
 end

app/views/session_invitation_mailer/change_of_details.html.erb

@@ -0,0 +1,44 @@
+<h2 style="font-weight: 400; font-size: 24px; border-bottom:1px solid #ececec; padding-bottom: 15px; margin-bottom:35px">Hi <%= @member.name %></h2>
+
+<h3 style="font-weight: 600; font-size: 17px; letter-spacing: 0.02em; color: #111111">We'd like to let you know that there's been a last minute change to <%= @session.title %>!</h3>
+<p style="font-weight: 300; font-size: 16px; color: #2e2e2e; margin-bottom: 50px;">Below you can find the updated session details:</p>
+
+
+<h2 style="color: #2d183d; font-size: 27px; font-weight: 500;letter-spacing: 0.03em; margin-bottom: 0;"><%= @session.title %> by Codebar</h2>
+<small><%= @session.description %></small>
+<p style="font-size: 16px; font-weight: 300; margin-top: 7px;">on <b style="color: #555555;font-size: 16px; font-weight: 600; margin-top: 0;"><%= l(@session.date_and_time, format: :email)%></b></p>
+
+<div style="display: inline-block;">
+  <div style="min-width: 200px; padding-right: 40px; display: inline-block; vertical-align: top;">
+
+    <h3 style="color: #434950; font-size: 17px;font-weight: 600;letter-spacing: 0.02em;">Location</h3>
+    <h2 style="color: #2D183D; font-weight: 400; "><%= @session.host.name %></h2>
+    <p style="color: #434950; font-size: 16px; font-weight: 400; padding-bottom: 15px;">
+    <%= @host_address.to_html %>
+    </p>
+    <a href="https://maps.google.com/maps?q=<%= @host_address.postal_code %>" style="color: a369d5 text-decoration: underline"> view map </a>
+    <div style="width:120px; height:41px; margin-top: 33px;">
+      <%= link_to full_url_for(@sponsor.website) do %>
+        <%=image_tag(@session.host.avatar, width: "120px") %>
+      <% end %>
+    </div>
+  </div>
+
+</div>
+
+<% if @sponsor %>
+  <div style="width:150px; border-left: 1px solid #ececec; padding-left: 50px; display: inline-block;">
+    <div style="width: 340px; padding-right: 40px; display: inline-block; vertical-align: top;">
+
+      <h3 style="color: #434950; font-size: 17px;font-weight: 600;letter-spacing: 0.02em;">Sponsor</h3>
+      <h2 style="color: #2D183D; font-weight: 400; "><%= @sponsor.name %></h2>
+      <div style="width:120px; height:41px; margin-top: 33px;">
+        <%= link_to full_url_for(@sponsor.website) do %>
+          <%=image_tag(@sponsor.avatar, width: "120px") %></div>
+      <% end %>
+    </div>
+
+  </div>
+<% end %>
+
+<div style="clear:both; width: 100%; height: 10px;"></div>