# Docs

# https://stripe.com/docs/api/subscription_schedules/release
# https://support.stripe.com/questions/create-update-and-schedule-subscriptions
# https://stripe.com/docs/billing/subscriptions/subscription-schedules

# Code

require 'stripe'

Stripe::api_key = ENV['STRIPE_SECRET_KEY']

product1 = Stripe::Product.create(name: "Gold plan #{rand(9999999999)}")
plan1 = Stripe::Plan.create(interval: 'month', currency: 'jpy', amount: 5000, product: product1.id, usage_type: 'licensed')

product2 = Stripe::Product.create(name: "Silver plan #{rand(9999999999)}")
plan2 = Stripe::Plan.create(interval: 'month', currency: 'jpy', amount: 3000, product: product2.id, usage_type: 'licensed')

product3 = Stripe::Product.create(name: "Bronse plan #{rand(9999999999)}")
plan3 = Stripe::Plan.create(interval: 'month', currency: 'jpy', amount: 1000, product: product3.id, usage_type: 'licensed')

tax_rate = Stripe::TaxRate.create(display_name: 'Tax Rate', percentage: 10.0, inclusive: false)
customer = Stripe::Customer.create
payment_method = Stripe::PaymentMethod.create(type: 'card', card: { number: '4242424242424242', exp_year: 2030, exp_month: 01})
customer_payment_method = Stripe::PaymentMethod.attach(payment_method.id, customer: customer.id)

def put_subscription_schedule(subscription_schedule, message)
  puts '-' * 100
  puts "Subscription Schedule"
  puts message
  puts "https://dashboard.stripe.com/test/subscription_schedules/#{subscription_schedule.id}"
  puts '-' * 100
  puts subscription_schedule
end

# https://stripe.com/docs/api/subscription_schedules/create
subscription_schedule = Stripe::SubscriptionSchedule.create(
  {
    customer: customer.id,
    start_date: Time.now.to_i + 5,
    default_settings: {
      default_payment_method: customer_payment_method.id,
    },
    phases: [
      {
        plans:
          [
            { plan: plan1.id, quantity: 1 },
            { plan: plan2.id, quantity: 4 },
          ],
          default_tax_rates: [tax_rate],
          iterations: 3,
      },
      {
        plans:
          [
            { plan: plan2.id, quantity: 1 },
            { plan: plan3.id, quantity: 1 },
          ],
          default_tax_rates: [tax_rate],
          iterations: 5,
      },
      {
        plans:
          [
            { plan: plan3.id, quantity: 3 },
            { plan: plan1.id, quantity: 2 },
          ],
          default_tax_rates: [tax_rate],
          iterations: 7,
      }
    ],
  }
)
put_subscription_schedule(subscription_schedule, 'CREATED')


puts '-' * 100
puts "Wait until subscription schedule starts"
puts '-' * 100
until subscription_schedule.status == 'active' do
  subscription_schedule = Stripe::SubscriptionSchedule.retrieve(subscription_schedule.id)
  puts subscription_schedule.status
  sleep 2
end

started_subscription_schedule = Stripe::SubscriptionSchedule.retrieve(id: subscription_schedule.id, expand: ['subscription'])
put_subscription_schedule(started_subscription_schedule, 'STARTED')

subscription = started_subscription_schedule.subscription

started_subscription_schedule.subscription # #<StripeSubscription: ...
started_subscription_schedule.phases.size # 3

puts '-' * 100
puts "Subscription created"
puts "https://dashboard.stripe.com/test/subscriptions/#{subscription.id}"
puts '-' * 100
puts subscription

Stripe::SubscriptionSchedule.release(started_subscription_schedule.id)

released_subscription_schedule = Stripe::SubscriptionSchedule.retrieve(id: subscription_schedule.id, expand: ['subscription'])

# SubscriptionSchedule now has no "subscription" but has phases ( not used ? )
released_subscription_schedule.subscription # nil
released_subscription_schedule.phases.size # 3

released_subscription = Stripe::Subscription.retrieve(subscription.id)

removed_from_subscription_by_released_schedule =  subscription.to_a - released_subscription.to_a
# Subscription "cancel_at" removed by Subscription release
# e.g
# => [[:cancel_at, 1585720051], [:canceled_at, 1577857651], [:schedule, "sub_sched_1Fw03HCmti5jpytUpJMypWcA"]]