Merge pull request #10 from IgorG0mes/feat/ru-0008/qrcode-generator-for-visitor

[FEAT][RU-0008] QRcode generator for Visitor

Author: IgorG0mes

app/controllers/students_controller.rb

@@ -41,7 +41,6 @@ def regenerate_qr
     redirect_to @student, notice: "Novo QR Code gerado e salvo para #{@student.name}."
   end
 
-
   private
 
   def set_student

app/controllers/visitors_controller.rb

@@ -1,6 +1,7 @@
 class VisitorsController < ApplicationController
   before_action :authenticate_user!
-  before_action :set_visitor, only: [ :show, :edit, :update ]
+  before_action :set_visitor, only: [ :show, :edit, :update, :regenerate_qr ]
+  before_action :require_admin, only: [:regenerate_qr]
 
   def index
     @visitors = Visitor.all
@@ -34,6 +35,12 @@ def update
     end
   end
 
+  def regenerate_qr
+    QrCodeGeneratorService.generate_and_assign(@visitor)
+
+    redirect_to @visitor, notice: "Novo QR Code gerado e salvo para #{@visitor.name}."
+  end
+
   private
 
   def set_visitor

app/models/visitor.rb

@@ -1,7 +1,24 @@
+require "rqrcode"
+
 class Visitor < ApplicationRecord
   has_many :access_logs, as: :personable
   after_create :generate_qr_code
 
+  def generate_qr_code_svg
+    return unless qr_code_hash.present?
+
+    qrcode = RQRCode::QRCode.new(qr_code_hash)
+
+    qrcode.as_svg(
+      color: "000",
+      shape_rendering: "crispEdges",
+      module_size: 6,
+      standalone: true,
+      viewbox: "0 0 300 300"
+    )
+    .html_safe
+  end
+
   private
   def generate_qr_code
     QrCodeGeneratorService.generate_and_assign(self)

app/views/visitors/show.html.erb

@@ -5,7 +5,22 @@
 <p><strong>E-mail:</strong> <%= @visitor.email %></p>
 <p><strong>QR Code Hash (Chave):</strong> <code><%= @visitor.qr_code_hash %></code></p>
 
-<hr>
+<div style="float: left; margin-left: 20px;">
+  <% if @visitor.qr_code_hash.present? %>
+    <h2>QR Code de Acesso</h2>
+    <%= @visitor.generate_qr_code_svg %>
+    <p class="text-center">Chave: <code><%= @visitor.qr_code_hash %></code></p>
+  <% else %>
+    <p>QR Code ainda não gerado. Edite e salve para forçar a geração.</p>
+  <% end %>
+  <% if current_user.role&.name == 'admin' %>
+  <%= link_to 'Gerar Novo QR Code', regenerate_qr_visitor_path(@visitor), 
+      data: { turbo_method: :post, turbo_confirm: 'Isso invalidará o QR Code antigo. Continuar?' },
+      style: "color: orange;" %>
+<% end %>
+</div>
+
+<hr style="clear: both;">
 
 <%= link_to 'Editar', edit_visitor_path(@visitor) %> |
 <%= link_to 'Voltar para a Lista', visitors_path %>

config/routes.rb

@@ -9,8 +9,14 @@
   resources :students do
     post :regenerate_qr, on: :member
   end
-  resources :visitors
+
+  resources :visitors do
+    post :regenerate_qr, on: :member
+  end
+
   resources :meals
+
   resources :daily_menus
+
   resources :access_logs, only: [:index, :destroy]
 end