Add Customers and Subscriptions models (#33)

app/models/customer.rb

@@ -0,0 +1,9 @@
+# frozen_string_litera: true
+
+class Customer < ApplicationRecord
+  belongs_to :organization
+
+  has_many :subscriptions
+
+  validates :external_id, presence: true
+end

app/models/organization.rb

@@ -5,6 +5,8 @@ class Organization < ApplicationRecord
   has_many :users, through: :memberships
   has_many :billable_metrics
   has_many :plans
+  has_many :customers
+  has_many :subscriptions, through: :customers
 
   before_create :generate_api_key
 

app/models/plan.rb

@@ -5,6 +5,7 @@ class Plan < ApplicationRecord
 
   has_many :charges, dependent: :destroy
   has_many :billable_metrics, through: :charges
+  has_many :subscriptions
 
   FREQUENCIES = %i[
     weekly

app/models/subscription.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class Subscription < ApplicationRecord
+  belongs_to :customer
+  belongs_to :plan
+  has_one :organization, through: :customer
+
+  STATUSES = [
+    :pending,
+    :active,
+    :terminated,
+    :canceled
+  ].freeze
+
+  enum status: STATUSES
+
+  def mark_as_active!
+    self.started_at = Time.zone.now
+    self.active!
+  end
+
+  def mark_as_terminated!
+    self.terminated_at = Time.zone.now
+    self.terminated!
+  end
+
+  def mark_as_canceled!
+    self.canceled_at = Time.zone.now
+    self.canceled!
+  end
+end

db/migrate/20220328085925_create_customers.rb

@@ -0,0 +1,12 @@
+class CreateCustomers < ActiveRecord::Migration[7.0]
+  def change
+    create_table :customers, id: :uuid do |t|
+      t.string :external_id, null: false, index: true
+      t.string :name
+
+      t.references :organization, type: :uuid, foreign_key: true, null: false, index: true
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20220328090501_create_subscriptions.rb

@@ -0,0 +1,16 @@
+class CreateSubscriptions < ActiveRecord::Migration[7.0]
+  def change
+    create_table :subscriptions, id: :uuid do |t|
+      t.references :customer, type: :uuid, null: false, foreign_key: true, index: true
+      t.references :plan, type: :uuid, null: false, foreign_key: true, index: true
+
+      t.integer :status, null: false
+
+      t.timestamp :canceled_at
+      t.timestamp :terminated_at
+      t.timestamp :started_at
+
+      t.timestamps
+    end
+  end
+end

spec/factories/customer_factory.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :customer do
+    organization
+    name { Faker::TvShows::SiliconValley.character }
+    external_id { SecureRandom.uuid }
+  end
+end

spec/factories/subscription_factory.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :subscription do
+    customer
+    plan
+  end
+end

spec/models/charge_spec.rb

@@ -1,4 +1,7 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe Charge, type: :model do
+  # Empty
 end

spec/models/customer_spec.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Customer, type: :model do
+  # Empty
+end

spec/models/subscription_spec.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Subscription, type: :model do
+  # Empty
+end