aperonight/docs/architecture.txt

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====================

Message 1 sur 6 de l'utilisateur - 16/08/2025, 08:29:15:
For a git Ruby on Rails web project with the the goal to propose night parties in Paris and allow party maker to create their own parties. 

The application for customers must:
* shows parties (upcoming and past) 
* permit user to book one or many tickets for a party (choosing their bundle : simple entry, 4 people pass with bottle, VIP, etc)
* accept credit cards, paypal, bank account payments
* generate unique tickets (per person or per order 
* be able to be used on mobile to permit promotors to scan tickets using phone

For promotors:
* allow them to create and program parties
* aggregate parties from other website (shogun, bizouk, weezevent)

Give advices on this application and give the arhitecture to implement.

Mistral Small 3:
Creating a Ruby on Rails web application for proposing night parties in Paris and allowing party makers to create their own parties is an exciting project. Below are some advices and an architecture to implement this application.

### Advices

1. **User Authentication and Authorization**:
   - Use Devise for user authentication.
   - Use Pundit or CanCanCan for authorization to manage different roles (customers, promoters).

2. **Payment Integration**:
   - Use Stripe for credit card payments.
   - Use PayPal for PayPal payments.
   - For bank account payments, consider integrating with a service like Plaid or directly with a banking API.

3. **Ticket Generation**:
   - Generate unique tickets using a combination of UUIDs and QR codes.
   - Use a library like `rufus-scheduler` to handle ticket expiration and validation.

4. **Mobile Compatibility**:
   - Ensure the application is responsive and mobile-friendly.
   - Use a library like `qrcode` to generate QR codes for tickets.
   - For scanning tickets, use a mobile-friendly QR code scanner library like `zxing` or `html5-qrcode`.

5. **Aggregation of Parties**:
   - Use web scraping or APIs provided by other websites (Shogun, Bizouk, Weezevent) to aggregate parties.
   - Consider using a background job processor like Sidekiq for periodic data aggregation.

6. **Performance and Scalability**:
   - Use caching mechanisms like Redis or Memcached to improve performance.
   - Consider using a CDN for static assets.
   - Implement background jobs for time-consuming tasks like sending emails or processing payments.

### Architecture

#### 1. **Database Schema**

```ruby
# User
create_table :users do |t|
  t.string :email
  t.string :password_digest
  t.string :role # customer or promoter
  t.timestamps
end

# Party
create_table :parties do |t|
  t.string :name
  t.text :description
  t.datetime :start_time
  t.datetime :end_time
  t.string :location
  t.integer :promoter_id
  t.timestamps
end

# Ticket
create_table :tickets do |t|
  t.string :uuid
  t.string :qr_code
  t.integer :party_id
  t.integer :user_id
  t.string :bundle_type # simple entry, 4 people pass with bottle, VIP, etc
  t.boolean :used, default: false
  t.timestamps
end

# Payment
create_table :payments do |t|
  t.string :payment_method # credit_card, paypal, bank_account
  t.string :transaction_id
  t.integer :user_id
  t.integer :ticket_id
  t.decimal :amount
  t.timestamps
end
```

#### 2. **Models**

```ruby
class User < ApplicationRecord
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable
  has_many :tickets
  has_many :payments
end

class Party < ApplicationRecord
  belongs_to :promoter, class_name: 'User'
  has_many :tickets
end

class Ticket < ApplicationRecord
  belongs_to :party
  belongs_to :user
  has_one :payment

  before_create :generate_uuid_and_qr_code

  private

  def generate_uuid_and_qr_code
    self.uuid = SecureRandom.uuid
    self.qr_code = RQRCode::QRCode.new(self.uuid).as_svg
  end
end

class Payment < ApplicationRecord
  belongs_to :user
  belongs_to :ticket
end
```

#### 3. **Controllers**

```ruby
class PartiesController < ApplicationController
  before_action :authenticate_user!
  before_action :set_party, only: [:show, :edit, :update, :destroy]

  def index
    @parties = Party.all
  end

  def show
  end

  def new
    @party = Party.new
  end

  def create
    @party = current_user.parties.build(party_params)
    if @party.save
      redirect_to @party, notice: 'Party was successfully created.'
    else
      render :new
    end
  end

  def edit
  end

  def update
    if @party.update(party_params)
      redirect_to @party, notice: 'Party was successfully updated.'
    else
      render :edit
    end
  end

  def destroy
    @party.destroy
    redirect_to parties_url, notice: 'Party was successfully destroyed.'
  end

  private

  def set_party
    @party = Party.find(params[:id])
  end

  def party_params
    params.require(:party).permit

--------------------

Message 2 sur 6 de l'utilisateur - 16/08/2025, 08:30:32:
For the bundles, promotors must be able to define their own for party they craete

Mistral Small 3:
To allow promoters to define their own bundles for the parties they create, you need to introduce a `Bundle` model that will be associated with the `Party` model. This will enable promoters to create custom bundles for each party, specifying details like the bundle type, price, and any additional perks.

### Updated Database Schema

```ruby
# Bundle
create_table :bundles do |t|
  t.string :name
  t.text :description
  t.decimal :price
  t.integer :party_id
  t.timestamps
end
```

### Updated Models

```ruby
class User < ApplicationRecord
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable
  has_many :tickets
  has_many :payments
  has_many :parties, foreign_key: 'promoter_id'
end

class Party < ApplicationRecord
  belongs_to :promoter, class_name: 'User'
  has_many :tickets
  has_many :bundles
end

class Ticket < ApplicationRecord
  belongs_to :party
  belongs_to :user
  belongs_to :bundle
  has_one :payment

  before_create :generate_uuid_and_qr_code

  private

  def generate_uuid_and_qr_code
    self.uuid = SecureRandom.uuid
    self.qr_code = RQRCode::QRCode.new(self.uuid).as_svg
  end
end

class Payment < ApplicationRecord
  belongs_to :user
  belongs_to :ticket
end

class Bundle < ApplicationRecord
  belongs_to :party
  has_many :tickets
end
```

### Updated Controllers

#### PartiesController

```ruby
class PartiesController < ApplicationController
  before_action :authenticate_user!
  before_action :set_party, only: [:show, :edit, :update, :destroy]

  def index
    @parties = Party.all
  end

  def show
    @bundles = @party.bundles
  end

  def new
    @party = Party.new
    @party.bundles.build
  end

  def create
    @party = current_user.parties.build(party_params)
    if @party.save
      redirect_to @party, notice: 'Party was successfully created.'
    else
      render :new
    end
  end

  def edit
    @bundles = @party.bundles
  end

  def update
    if @party.update(party_params)
      redirect_to @party, notice: 'Party was successfully updated.'
    else
      render :edit
    end
  end

  def destroy
    @party.destroy
    redirect_to parties_url, notice: 'Party was successfully destroyed.'
  end

  private

  def set_party
    @party = Party.find(params[:id])
  end

  def party_params
    params.require(:party).permit(:name, :description, :start_time, :end_time, :location, bundles_attributes: [:id, :name, :description, :price, :_destroy])
  end
end
```

#### BundlesController

```ruby
class BundlesController < ApplicationController
  before_action :authenticate_user!
  before_action :set_bundle, only: [:show, :edit, :update, :destroy]

  def index
    @bundles = Bundle.all
  end

  def show
  end

  def new
    @bundle = Bundle.new
  end

  def create
    @bundle = Bundle.new(bundle_params)
    if @bundle.save
      redirect_to @bundle, notice: 'Bundle was successfully created.'
    else
      render :new
    end
  end

  def edit
  end

  def update
    if @bundle.update(bundle_params)
      redirect_to @bundle, notice: 'Bundle was successfully updated.'
    else
      render :edit
    end
  end

  def destroy
    @bundle.destroy
    redirect_to bundles_url, notice: 'Bundle was successfully destroyed.'
  end

  private

  def set_bundle
    @bundle = Bundle.find(params[:id])
  end

  def bundle_params
    params.require(:bundle).permit(:name, :description, :price, :party_id)
  end
end
```

### Views

#### parties/_form.html.erb

```erb
<%= form_with(model: party, local: true) do |form| %>
  <% if party.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(party.errors.count, "error") %> prohibited this party from being saved:</h2>
      <ul>
        <% party.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
     

--------------------

Message 3 sur 6 de l'utilisateur - 16/08/2025, 08:30:56:
Continue

Mistral Small 3:
Certainly! Let's continue with the views and ensure that the form for creating and editing parties includes the ability to manage bundles.

### Views (Continued)

#### parties/_form.html.erb

```erb
<%= form_with(model: party, local: true) do |form| %>
  <% if party.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(party.errors.count, "error") %> prohibited this party from being saved:</h2>
      <ul>
        <% party.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= form.label :name %>
    <%= form.text_field :name %>
  </div>

  <div class="field">
    <%= form.label :description %>
    <%= form.text_area :description %>
  </div>

  <div class="field">
    <%= form.label :start_time %>
    <%= form.datetime_select :start_time %>
  </div>

  <div class="field">
    <%= form.label :end_time %>
    <%= form.datetime_select :end_time %>
  </div>

  <div class="field">
    <%= form.label :location %>
    <%= form.text_field :location %>
  </div>

  <h3>Bundles</h3>
  <%= form.fields_for :bundles do |bundle_form| %>
    <div class="nested-fields">
      <div class="field">
        <%= bundle_form.label :name %>
        <%= bundle_form.text_field :name %>
      </div>

      <div class="field">
        <%= bundle_form.label :description %>
        <%= bundle_form.text_area :description %>
      </div>

      <div class="field">
        <%= bundle_form.label :price %>
        <%= bundle_form.number_field :price, step: 0.01 %>
      </div>

      <%= bundle_form.check_box :_destroy %>
      <%= bundle_form.label :_destroy, "Remove" %>
    </div>
  <% end %>

  <div class="actions">
    <%= form.submit %>
  </div>
<% end %>

<%= link_to_add_association 'Add Bundle', form, :bundles %>
```

### JavaScript for Dynamic Fields

To dynamically add and remove bundle fields, you can use the `cocoon` gem, which simplifies the process of handling nested forms.

#### Gemfile

```ruby
gem 'cocoon'
```

#### Application JavaScript

Include the `cocoon` JavaScript in your application:

```javascript
// app/assets/javascripts/application.js
//= require cocoon
```

### Routes

Ensure your routes are set up to handle the nested resources:

#### config/routes.rb

```ruby
Rails.application.routes.draw do
  devise_for :users
  resources :parties do
    resources :bundles, only: [:new, :create, :edit, :update, :destroy]
  end
  resources :bundles, only: [:index, :show]
  resources :tickets
  resources :payments
  root 'parties#index'
end
```

### Ticket Booking

To allow users to book tickets and choose bundles, you need to update the `TicketsController` and the corresponding views.

#### TicketsController

```ruby
class TicketsController < ApplicationController
  before_action :authenticate_user!
  before_action :set_party, only: [:new, :create]

  def new
    @ticket = Ticket.new
  end

  def create
    @ticket = current_user.tickets.build(ticket_params)
    if @ticket.save
      redirect_to @ticket, notice: 'Ticket was successfully booked.'
    else
      render :new
    end
  end

  private

  def set_party
    @party = Party.find(params[:party_id])
  end

  def ticket_params
    params.require(:ticket).permit(:bundle_id, :party_id)
  end
end
```

#### tickets/_form.html.erb

```erb
<%= form_with(model: [@party, @ticket], local: true) do |form| %>
  <% if @ticket.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@ticket.errors.count, "error") %> prohibited this ticket from being saved:</h2>
      <ul>
        <% @ticket.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= form.label :bundle %>
    <%= form.collection_select :bundle_id, @party.bundles, :id, :name %>
  </div>

  <div class="actions">
    <%= form.submit %>
  </div>
<% end %>
```

### Payment

--------------------

Message 4 sur 6 de l'utilisateur - 16/08/2025, 08:31:14:
Continue

Mistral Small 3:
To handle payments, you need to integrate a payment gateway like Stripe for credit card payments and PayPal for PayPal payments. Below are the steps to set up payment processing in your Ruby on Rails application.

### Payment Integration

#### 1. **Add Gems**

Add the necessary gems to your `Gemfile`:

```ruby
gem 'stripe'
gem 'paypal-sdk-rest'
```

Then run `bundle install` to install the gems.

#### 2. **Configure Stripe**

Create an initializer for Stripe configuration:

```ruby
# config/initializers/stripe.rb
Rails.configuration.stripe = {
  publishable_key: ENV['STRIPE_PUBLISHABLE_KEY'],
  secret_key: ENV['STRIPE_SECRET_KEY']
}

Stripe.api_key = Rails.configuration.stripe[:secret_key]
```

#### 3. **Configure PayPal**

Create an initializer for PayPal configuration:

```ruby
# config/initializers/paypal.rb
PayPal::SDK.configure({
  mode: ENV['PAYPAL_MODE'], # 'sandbox' or 'live'
  client_id: ENV['PAYPAL_CLIENT_ID'],
  client_secret: ENV['PAYPAL_CLIENT_SECRET']
})
```

#### 4. **Payment Model**

Update the `Payment` model to handle different payment methods:

```ruby
class Payment < ApplicationRecord
  belongs_to :user
  belongs_to :ticket

  enum payment_method: { credit_card: 'credit_card', paypal: 'paypal', bank_account: 'bank_account' }

  after_create :process_payment

  private

  def process_payment
    case self.payment_method
    when 'credit_card'
      process_stripe_payment
    when 'paypal'
      process_paypal_payment
    when 'bank_account'
      process_bank_account_payment
    end
  end

  def process_stripe_payment
    # Implement Stripe payment processing
  end

  def process_paypal_payment
    # Implement PayPal payment processing
  end

  def process_bank_account_payment
    # Implement bank account payment processing
  end
end
```

#### 5. **Payment Controller**

Create a `PaymentsController` to handle payment creation and processing:

```ruby
class PaymentsController < ApplicationController
  before_action :authenticate_user!
  before_action :set_ticket, only: [:new, :create]

  def new
    @payment = Payment.new
  end

  def create
    @payment = current_user.payments.build(payment_params)
    @payment.ticket = @ticket
    if @payment.save
      redirect_to @payment, notice: 'Payment was successfully processed.'
    else
      render :new
    end
  end

  private

  def set_ticket
    @ticket = Ticket.find(params[:ticket_id])
  end

  def payment_params
    params.require(:payment).permit(:payment_method, :amount)
  end
end
```

#### 6. **Payment Views**

Create views for the payment form:

```erb
<!-- app/views/payments/new.html.erb -->
<%= form_with(model: [@ticket, @payment], local: true) do |form| %>
  <% if @payment.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@payment.errors.count, "error") %> prohibited this payment from being saved:</h2>
      <ul>
        <% @payment.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= form.label :payment_method %>
    <%= form.select :payment_method, Payment.payment_methods.keys.to_a, prompt: 'Select payment method' %>
  </div>

  <div class="field">
    <%= form.label :amount %>
    <%= form.number_field :amount, step: 0.01 %>
  </div>

  <div class="actions">
    <%= form.submit %>
  </div>
<% end %>
```

### Stripe Payment Processing

To process payments with Stripe, you need to create a Stripe charge. Update the `process_stripe_payment` method in the `Payment` model:

```ruby
def process_stripe_payment
  begin
    charge = Stripe::Charge.create(
      amount: (self.amount * 100).to_i, # amount in cents
      currency: 'eur',
      source: params[:stripeToken],
      description: "Payment for ticket #{self.ticket.id}"
    )
    self.transaction_id = charge.id
    self.save
  rescue Stripe::StripeError => e
    # Handle error
    self.errors.add(:base, e.message)
    self.save
  end
end
```

### PayPal Payment Processing

To process payments with

--------------------

Message 5 sur 6 de l'utilisateur - 16/08/2025, 08:31:34:
Continue

Mistral Small 3:
To process payments with PayPal, you need to create a PayPal payment and handle the redirection to PayPal for payment approval. Below are the steps to integrate PayPal payment processing.

### PayPal Payment Processing

#### 1. **Create PayPal Payment**

Update the `process_paypal_payment` method in the `Payment` model to create a PayPal payment:

```ruby
def process_paypal_payment
  payment = PayPal::SDK::REST::Payment.new({
    intent: 'sale',
    payer: {
      payment_method: 'paypal'
    },
    transactions: [{
      amount: {
        total: self.amount.to_s,
        currency: 'EUR'
      },
      description: "Payment for ticket #{self.ticket.id}"
    }],
    redirect_urls: {
      return_url: paypal_success_url,
      cancel_url: paypal_cancel_url
    }
  })

  if payment.create
    self.transaction_id = payment.id
    self.save
    redirect_to payment.links.find { |link| link.rel == 'approval_url' }.href
  else
    self.errors.add(:base, payment.error.message)
    self.save
  end
end
```

#### 2. **Handle PayPal Redirect**

Create routes and controllers to handle the PayPal redirect after payment:

```ruby
# config/routes.rb
Rails.application.routes.draw do
  devise_for :users
  resources :parties do
    resources :bundles, only: [:new, :create, :edit, :update, :destroy]
  end
  resources :bundles, only: [:index, :show]
  resources :tickets do
    resources :payments, only: [:new, :create]
  end
  get 'paypal_success', to: 'payments#paypal_success'
  get 'paypal_cancel', to: 'payments#paypal_cancel'
  root 'parties#index'
end
```

```ruby
# app/controllers/payments_controller.rb
class PaymentsController < ApplicationController
  before_action :authenticate_user!
  before_action :set_ticket, only: [:new, :create]

  def new
    @payment = Payment.new
  end

  def create
    @payment = current_user.payments.build(payment_params)
    @payment.ticket = @ticket
    if @payment.save
      if @payment.payment_method == 'paypal'
        redirect_to @payment.transaction_id
      else
        redirect_to @payment, notice: 'Payment was successfully processed.'
      end
    else
      render :new
    end
  end

  def paypal_success
    payment_id = params[:paymentId]
    payer_id = params[:PayerID]

    payment = PayPal::SDK::REST::Payment.find(payment_id)
    if payment.execute(payer_id: payer_id)
      @payment = Payment.find_by(transaction_id: payment_id)
      @payment.update(status: 'completed')
      redirect_to @payment, notice: 'Payment was successfully completed.'
    else
      redirect_to paypal_cancel_path, alert: 'Payment failed.'
    end
  end

  def paypal_cancel
    redirect_to root_path, alert: 'Payment was canceled.'
  end

  private

  def set_ticket
    @ticket = Ticket.find(params[:ticket_id])
  end

  def payment_params
    params.require(:payment).permit(:payment_method, :amount)
  end
end
```

### Bank Account Payment Processing

For bank account payments, you can use a service like Plaid to handle the integration. Below is a basic outline of how you might set this up:

#### 1. **Add Plaid Gem**

Add the Plaid gem to your `Gemfile`:

```ruby
gem 'plaid'
```

Then run `bundle install` to install the gem.

#### 2. **Configure Plaid**

Create an initializer for Plaid configuration:

```ruby
# config/initializers/plaid.rb
Plaid.configure do |config|
  config.client_id = ENV['PLAID_CLIENT_ID']
  config.secret = ENV['PLAID_SECRET']
  config.public_key = ENV['PLAID_PUBLIC_KEY']
  config.environment = ENV['PLAID_ENVIRONMENT'] # 'sandbox' or 'development'
end
```

#### 3. **Process Bank Account Payment**

Update the `process_bank_account_payment` method in the `Payment` model to handle Plaid integration:

```ruby
def process_bank_account_payment
  # Implement Plaid payment processing
  # This is a placeholder for the actual Plaid integration logic
  self.transaction_id = 'bank_account_transaction_id'
  self.save
end
```

### Ticket Scanning

To allow promoters to scan tickets using their phones, you can use a

--------------------

Message 6 sur 6 de l'utilisateur - 16/08/2025, 08:31:55:
Continue

Mistral Small 3:
To allow promoters to scan tickets using their phones, you can use a QR code scanning library. Below are the steps to implement ticket scanning functionality in your Ruby on Rails application.

### Ticket Scanning

#### 1. **Choose a QR Code Scanning Library**

For mobile compatibility, you can use a library like `html5-qrcode` for scanning QR codes. This library works well in modern web browsers and can be integrated into your Rails application.

#### 2. **Create a Ticket Scanning View**

Create a view for scanning tickets. This view will include the HTML5 QR code scanner.

```erb
<!-- app/views/tickets/scan.html.erb -->
<!DOCTYPE html>
<html>
<head>
  <title>Scan Ticket</title>
  <script src="https://unpkg.com/html5-qrcode"></script>
</head>
<body>
  <h1>Scan Ticket</h1>
  <div id="reader" width="500"></div>
  <div id="result"></div>
  <script>
    function docReady(fn) {
      // see if DOM is already available
      if (document.readyState === "complete" || document.readyState === "interactive") {
        // call on next available tick
        setTimeout(fn, 1);
      } else {
        document.addEventListener("DOMContentLoaded", fn);
      }
    }

    docReady(function () {
      var resultContainer = document.getElementById('result');
      var lastResult, countResults = 0;
      function onScanSuccess(qrCodeMessage) {
        if (qrCodeMessage !== lastResult) {
          ++countResults;
          lastResult = qrCodeMessage;
          // Handle on success condition with the decoded message
          resultContainer.innerHTML = `<span class="label">Last scanned QR Code: </span> <a href="${qrCodeMessage}">${qrCodeMessage}</a>`;
          // Send the scanned QR code to the server for validation
          fetch('/tickets/validate', {
            method: 'POST',
            headers: {
              'Content-Type': 'application/json',
              'X-CSRF-Token': document.querySelector('meta[name="csrf-token"]').getAttribute('content')
            },
            body: JSON.stringify({ qr_code: qrCodeMessage })
          })
          .then(response => response.json())
          .then(data => {
            if (data.valid) {
              resultContainer.innerHTML += '<p>Ticket is valid.</p>';
            } else {
              resultContainer.innerHTML += '<p>Ticket is invalid.</p>';
            }
          })
          .catch(error => {
            console.error('Error:', error);
          });
        }
      }

      var html5QrcodeScanner = new Html5QrcodeScanner(
        "reader", { fps: 10, qrbox: 250 });
      html5QrcodeScanner.render(onScanSuccess);
    });
  </script>
</body>
</html>
```

#### 3. **Create a Route for Ticket Validation**

Add a route to handle the validation of scanned tickets:

```ruby
# config/routes.rb
Rails.application.routes.draw do
  devise_for :users
  resources :parties do
    resources :bundles, only: [:new, :create, :edit, :update, :destroy]
  end
  resources :bundles, only: [:index, :show]
  resources :tickets do
    resources :payments, only: [:new, :create]
    collection do
      post 'validate'
    end
  end
  get 'paypal_success', to: 'payments#paypal_success'
  get 'paypal_cancel', to: 'payments#paypal_cancel'
  get 'tickets/scan', to: 'tickets#scan'
  root 'parties#index'
end
```

#### 4. **Create a Controller Action for Ticket Validation**

Create an action in the `TicketsController` to handle the validation of scanned tickets:

```ruby
# app/controllers/tickets_controller.rb
class TicketsController < ApplicationController
  before_action :authenticate_user!, except: [:validate]
  before_action :set_ticket, only: [:show, :edit, :update, :destroy]

  def scan
  end

  def validate
    qr_code = params[:qr_code]
    ticket = Ticket.find_by(qr_code: qr_code)
    if ticket && !ticket.used
      ticket.update(used: true)
      render json: { valid: true }
    else
      render json: { valid: false }
    end
  end

  private

  def set_ticket
    @ticket = Ticket.find(params[:id])
  end
end
```

### Summary

With these steps, you have a comprehensive architecture for your Ruby on Rails web application that allows