gem 'pr-pin'

# Require the gem
require 'pr-pin'

# Register a connection using your Pin Payments secret key
PR::Pin.register_connection(
  secret_key: 'your_secret_key',
  # raise on error, defaults to returning PR::Pin::API::Error instance
  error_handler: ->(exception) { raise(exception) },
  sandbox: true # Defaults to true, false for production
)

# You can register another connection by passsing an identifier to
# PR::Pin.register_connection, i.e.
PR::Pin.register_connection(
  :admin, # defaults to :default
  secret_key: 'your_secret_key',
  sandbox: true
)

# Then, you can specify the connection to use when resolving the
# endpoint repository from the PR::Pin container
customers = PR::Pin.customers(:admin).list(page: 1)
# => [#<PR::Pin::Struct::Customer>, ...]
customers.current_page # => 1
customers.per_page # => 25
customers.prev_page # => nil
customers.next_page # => 2
customers.total_count # => 53
customers.total_pages # => 3

# Create a charge using a token, you can get a card token
# using Pin Payments hosted fields, or by creating a card
# via the API, this can be used to take a one-off payment
charge = PR::Pin.charges.create(
  email: 'a.user@petrescue.com.au',
  description: 'A $10 donation',
  amount: 1000,
  ip_address: '127.0.0.1',
  card_token: 'card_58b6c52f131956c4394ba7'
)
charge.success? # => true
charge.error? # => false
charge # => #<PR::Pin::Struct::Charge>

# Find a charge by token
PR::Pin.charges.find('ch_1ee2d1')
# => #<PR::Pin::Struct::Charge>

# For a subscription, create a customer using a card token
customer = PR::Pin.customers.create(
  email: 'a.user@petrescue.com.au',
  card_token: 'card_58b6c52f131956c4394ba7'
)
customer.success? # => true
customer.error? # => false
customer # => #<PR::Pin::Struct::Customer>

# And then attach a subscription using the plan token from
# the plans endpoint (you will need to create the plan first)
subscription = PR::Pin.subscriptions.create(
  plan_token: 'plan_2d16b31863015a57820b70',
  customer_token: 'cus_9d18a4516a6ae777-NDecB'
)
subscription.success? # => true
subscription.error? # => false
subscription # => #<PR::Pin::Struct::Subscription>

ledger = PR::Pin.ledger.for_subscription('sub_293857')
subscription.success? # => true
subscription.error? # => false
ledger
# => [
#   #<PR::Pin::Struct::Ledger type="credit" annotation="charge_credit" amount=1026 currency="AUD" created_at=#<DateTime: 2020-07-02T02:19:50+00:00 ((2459033j,8390s,0n),+0s,2299161j)>>,
#   #<PR::Pin::Struct::Ledger type="debit" annotation="interval_fee" amount=1026 currency="AUD" created_at=#<DateTime: 2020-07-02T02:19:47+00:00 ((2459033j,8387s,0n),+0s,2299161j)>>,
#   #<PR::Pin::Struct::Ledger type="debit" annotation="setup_fee" amount=0 currency="AUD" created_at=#<DateTime: 2020-07-02T02:19:47+00:00 ((2459033j,8387s,0n),+0s,2299161j)>>
# ]

# List refunds (paginated)
refunds = PR::Pin.refunds.list
# => [#<PR::Pin::Struct::Refund>, ...]

# Find a specific refund
refund = PR::Pin.refunds.find('rf_1e5429')
# => #<PR::Pin::Struct::Refund>

# Create a refund for a charge
PR::Pin.refunds.create_for_charge('ch_1ee2d1')
# => #<PR::Pin::Struct::Refund>

# List all refunds by charge
PR::Pin.refunds.for_charge('ch_1ee2d1')
# => [#<PR::Pin::Struct::Refund>, ...]

charge = PR::Pin.charges.create(
  email: 'a.user@petrescue.com.au'
)
charge.success? # => false
charge.error? # => true
charge.code # => "invalid_resource"
charge.description # => "One or more parameters were missing or invalid"
charge # => => #<PR::Pin::API::Error>