data architecture of prepaid-packs

app/frontend/src/javascript/components/configure-packs-button.tsx

@@ -0,0 +1,9 @@
+import React from 'react';
+
+/**
+ * This component is a button that shows the list of prepaid-packs when moving the mouse over it.
+ * When clicked, it opens a modal dialog to configure (add/delete/edit/remove) prepaid-packs.
+ */
+const ConfigurePacksButton: React.FC = ({}) => {
+  return <button/>;
+}

app/models/prepaid_pack.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+# Prepaid-packs of hours for machines/spaces.
+# A prepaid-pack is a set a hours that can be bought by a member. The member will be able to book for free as much hours
+# as there's in the pack, after having bought one.
+# The number of hours in each packs is saved in minutes
+class PrepaidPack < ApplicationRecord
+  belongs_to :priceable, polymorphic: true
+  belongs_to :group
+
+  has_many :user_prepaid_packs
+
+  validates :amount, :group_id, :priceable_id, :priceable_type, :minutes, presence: true
+
+  def hours
+    minutes / 60.0
+  end
+
+  def safe_destroy
+    if user_prepaid_packs.count.zero?
+      destroy
+    else
+      false
+    end
+  end
+end

app/models/user.rb

@@ -38,6 +38,9 @@ class User < ApplicationRecord
   has_many :training_credits, through: :users_credits, source: :training_credit
   has_many :machine_credits, through: :users_credits, source: :machine_credit
 
+  has_many :user_prepaid_packs, dependent: :destroy
+  has_many :prepaid_packs, through: :user_prepaid_packs
+
   has_many :user_tags, dependent: :destroy
   has_many :tags, through: :user_tags
   accepts_nested_attributes_for :tags, allow_destroy: true

app/models/user_prepaid_pack.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+# Associate a customer with a bought prepaid-packs of hours for machines/spaces.
+# Also saves the amount of hours used
+class UserPrepaidPack < ApplicationRecord
+  belongs_to :prepaid_pack
+  belongs_to :user
+
+end

db/migrate/20210621122103_create_prepaid_packs.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+# Prepaid-packs of hours for machines/spaces
+class CreatePrepaidPacks < ActiveRecord::Migration[5.2]
+  def change
+    create_table :prepaid_packs do |t|
+      t.references :priceable, polymorphic: true
+      t.references :group, foreign_key: true
+      t.integer :amount
+      t.integer :minutes
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20210621123954_create_user_prepaid_packs.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+# Bought and consumed prepaid-packs
+class CreateUserPrepaidPacks < ActiveRecord::Migration[5.2]
+  def change
+    create_table :user_prepaid_packs do |t|
+      t.references :prepaid_pack, foreign_key: true
+      t.references :user, foreign_key: true
+      t.integer :minutes_used, default: 0
+
+      t.timestamps
+    end
+  end
+end