implement amendment signing

app/controllers/public/amendments_controller.rb

@@ -0,0 +1,44 @@
+class Public::AmendmentsController < Public::BaseController
+  skip_after_action :verify_authorized, :verify_policy_scoped
+  before_action :set_account, :set_project, :set_contract_template, :set_release
+
+  def new
+    if @release.amendment_signed?
+      render :create, locals: { already_signed: true }
+    end
+  end
+
+  def create
+    @release.amendment_signer_name = release_params[:amendment_signer_name]
+    @release.amendment_signature_base64 = release_params[:amendment_signature_base64]
+    render :new unless @release.save
+  end
+
+  private
+
+  def release_params
+    release_type = @contract_template.release_type
+    param_name = "#{release_type}_release".to_s
+    params.require(param_name).permit(:amendment_signer_name, :amendment_signature_base64)
+  end
+
+  def set_release
+    release_type = @contract_template.release_type
+    param_name = "#{release_type}_release_id".to_s
+    release_id = params[param_name]
+
+    @release = @contract_template.releases.find(release_id)
+  end
+
+  def set_contract_template
+    @contract_template = @project.contract_templates.find(params[:contract_template_id])
+  end
+
+  def set_project
+    @project = @account.projects.find(params[:project_id])
+  end
+
+  def set_account
+    @account = Account.find_by(slug: params[:account_id])
+  end
+end

app/models/concerns/amendmenable.rb

@@ -0,0 +1,27 @@
+module Amendmenable
+  extend ActiveSupport::Concern
+
+  included do
+    include ActiveStorageSupport::SupportForBase64
+
+    has_one_base64_attached :amendment_signature
+  end
+
+  def amendment_signable?
+    contract_template.amendment_clause.present?
+  end
+
+  def amendment_signed?
+    amendment_signature.attached?
+  end
+
+  def amendment_signature_base64
+    nil
+  end
+
+  def amendment_signature_base64=(data_uri)
+    return if data_uri.blank?
+
+    amendment_signature.attach(data: data_uri, filename: "amendment_signature.png", content_type: "image/png", identify: "false")
+  end
+end

app/models/location_release.rb

@@ -12,6 +12,7 @@ class LocationRelease < ApplicationRecord
   include PersonName
   include CsvExportable
   include Approvable
+  include Amendmenable
 
   class << self
     def custom_csv_exportable_headers

app/policies/location_release_policy.rb

@@ -39,6 +39,10 @@ class LocationReleasePolicy < ReleasePolicy
     user.account_manager?
   end
 
+  def sign_amendment?
+    user.manager? || user.account_manager?
+  end
+
   def approve?
     review?
   end

app/views/location_releases/_location_release.html.erb

@@ -30,6 +30,15 @@
     <td>
     <%= location_release.signed_on %>
   </td>
+  <td class="text-center">
+    <% if location_release.amendment_signed? %>
+      <i class="fa fa-check-square-o text-dark"
+         data-toggle="tooltip"
+         title="<%= t '.messages.amendment_signed_tooltip' %>"></i>
+    <% else %>
+      <i class="fa fa-square-o"></i>
+    <% end %>
+  </td>
 
   <td class="text-right">
     <div class="btn-group">
@@ -44,6 +53,9 @@
         <% if policy(location_release).edit_photos? %>
           <%= link_to fa_icon("picture-o fw", text: "Photos"), [:edit, location_release, :photos], class: "dropdown-item" %>
         <% end %>
+        <% if policy(location_release).sign_amendment? && location_release.amendment_signable? && !location_release.amendment_signed? %>
+          <%= link_to fa_icon("file-text fw", text: t('.actions.sign_amendment')), [:new, location_release.project.account, location_release.project, location_release.contract_template, location_release, :amendment], class: "dropdown-item", target: "_blank" %>
+        <% end %>
         <% if policy(Contract).show? && (location_release.contract.attached? || location_release.contract_template.present?) %>
           <%= link_to fa_icon("download fw", text: "Download"), [location_release, :contracts, format: "pdf"], class: "dropdown-item", target: "_blank" %>
         <% end %>

app/views/location_releases/index.html.erb

@@ -32,8 +32,8 @@
         <th><%= t(".table_headers.address") %>
         <th><%= t(".table_headers.notes") %></th>
         <th><%= t(".table_headers.tags") %></th>
-         <th><%= t(".table_headers.signed_at") %></th>
-
+        <th><%= t(".table_headers.signed_at") %></th>
+        <th></th>
         <th></th>
       </tr>
     </thead>

app/views/public/amendments/create.html.erb

@@ -0,0 +1,3 @@
+<% message = local_assigns[:already_signed] ? t('.amendment_already_signed_message') : t('.amendment_signed_message') %>
+<% alert_type = local_assigns[:already_signed] ? "alert-warning" : "alert-success" %>
+<p class="alert <%= alert_type %> p-3 lead text-center"><%= message %></p>

app/views/public/amendments/new.html.erb

@@ -0,0 +1,24 @@
+<div class="card shadow-sm">
+  <div class="card-body">
+    <%= errors_summary_for @release %>
+    <%= bootstrap_form_with model: @release, method: :post, url: public_send("account_project_contract_template_#{@contract_template.release_type}_release_amendments_path"), local: true do |form| %>
+      <%= card_field_set_tag t(".amendment.heading") do %>
+        <p><%= @contract_template.amendment_clause %></p>
+      <% end %>
+
+      <hr>
+
+      <div class="form-row">
+        <%= form.text_field :amendment_signer_name, required: true, wrapper_class: "col-sm-6" %>
+      </div>
+
+      <%= card_field_set_tag t(".signature.heading") do %>
+        <%= render "shared/signature_fields", signature_field: :amendment_signature_base64, form: form %>
+      <% end %>
+
+      <div class="mt-5">
+        <%= form.button t("shared.submit_release_long"), class: "btn btn-block btn-lg btn-success", data: { disable_with: t("shared.disable_with") } %>
+      </div>
+    <% end %>
+  </div>
+</div>

app/views/shared/_signature_fields.html.erb

@@ -1,3 +1,4 @@
+<% signature_field = local_assigns[:signature_field] ? local_assigns[:signature_field] : :signature_base64 %>
 <canvas class="border bg-light w-100" data-behavior="digital-signature" data-signature-input="[data-ujs-target=signature-input]" style="height: 150px"></canvas>
 
 <% if local_assigns[:instruction] %>
@@ -6,7 +7,7 @@
   </small>
 <% end %>
 
-<%= form.hidden_field :signature_base64, data: { ujs_target: "signature-input" } %>
+<%= form.hidden_field signature_field, data: { ujs_target: "signature-input" } %>
 <div class="text-right">
   <%= button_tag class: "btn btn-sm btn-danger", data: { behavior: "clear-digital-signature" } do %>
     <%= fa_icon "refresh" %> <%= t "shared.clear" %>