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Status: * relevant commands have been spiked out but still need to be tested * charges_controller has been spiked out to use the stripe checkout flow * TODO: wire stripe checkout succeeded/failed commands to a webhook controller (https://stripe.com/docs/payments/checkout/fulfill-orders) * TODO: write tests
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Betsy Haibel
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Oct 20, 2021
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# frozen_string_literal: true | ||
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# Copyright 2019 Matthew B. Gray | ||
# Copyright 2019 AJ Esler | ||
# Copyright 2021 DisCon III | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
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# Money::StartStripeCheckout creates a pending charge record against a User for the Stripe integrations | ||
# and sets them up to check out with Stripe. | ||
# Truthy returns mean the user can be safely sent on to the checkout flow, otherwise check #errors for failure details. | ||
class Money::StartStripeCheckout | ||
attr_reader :reservation, :user, :charge_amount, :charge, :amount_owed, :success_url, :failure_url | ||
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def initialize(reservation:, user:, amount_owed:, success_url:, cancel_url:, charge_amount: nil) | ||
@reservation = reservation | ||
@user = user | ||
@charge_amount = charge_amount || amount_owed | ||
@amount_owed = amount_owed | ||
@success_url = success_url | ||
@failure_url = failure_url | ||
end | ||
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def call | ||
setup_stripe_customer | ||
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check_charge_amount unless errors.any? | ||
create_checkout_session unless errors.any? | ||
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charge_state_params = if errors.any? | ||
{ | ||
state: ::Charge::STATE_FAILED, | ||
comment: error_message, | ||
} | ||
else | ||
{ | ||
state: ::Charge::STATE_PENDING, | ||
comment: "Pending stripe payment", | ||
} | ||
end | ||
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@charge = ::Charge.stripe.create!({ | ||
user: user, | ||
reservation: reservation, | ||
stripe_id: @checkout_session.id, | ||
amount: charge_amount, | ||
}.merge(charge_state_params)) | ||
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checkout_url.present? | ||
end | ||
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def error_message | ||
errors.to_sentence | ||
end | ||
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def errors | ||
@errors ||= [] | ||
end | ||
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def checkout_url | ||
@checkout_session['url'] | ||
end | ||
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private | ||
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def check_charge_amount | ||
if !charge_amount.present? | ||
errors << "charge amount is missing" | ||
end | ||
if charge_amount <= 0 | ||
errors << "amount must be more than 0 cents" | ||
end | ||
if charge_amount > amount_owed | ||
errors << "refusing to overpay for reservation" | ||
end | ||
end | ||
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def create_checkout_session | ||
@checkout_session = Stripe::Checkout::Session.create({ | ||
line_items: [{ | ||
currency: ENV.fetch('STRIPE_CURRENCY'), | ||
amount: charge_amount.cents, | ||
name: reservation.membership.display_name, | ||
}, | ||
}], | ||
payment_method_types: [ | ||
'card', | ||
'wechat_pay', | ||
], | ||
mode: 'payment', | ||
success_url: success_url, | ||
cancel_url: cancel_url, | ||
}) | ||
end | ||
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def setup_stripe_customer | ||
if !user.stripe_id.present? | ||
stripe_customer = Stripe::Customer.create(email: user.email) | ||
user.update!(stripe_id: stripe_customer.id) | ||
end | ||
rescue Stripe::StripeError => e | ||
errors << e.message.to_s | ||
@charge.stripe_response = json_to_hash(e.response) | ||
@charge.comment = "Failed to setup customer - #{e.message}" | ||
end | ||
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def json_to_hash(obj) | ||
JSON.parse(obj.to_json) | ||
rescue | ||
{} | ||
end | ||
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def fully_paid? | ||
@charge.successful? && (amount_owed - charge_amount) <= 0 | ||
end | ||
end |
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# frozen_string_literal: true | ||
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# Copyright 2021 DisCon III | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
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# Money::StripeCheckoutFailed updates the Charge record associated with that checkout session to indicate that the payment failed. | ||
# Truthy returns mean that everything updated correctly, otherwise check #errors for failure details. | ||
class Money::StripeCheckoutFailed | ||
attr_reader :charge, :stripe_checkout_session | ||
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def initialize(charge:, stripe_checkout_session:) | ||
@charge = charge | ||
@stripe_checkout_session = stripe_checkout_session | ||
end | ||
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def call | ||
reservation.transaction do | ||
charge.state == ::Charge::FAILED | ||
charge.stripe_response = json_to_hash(stripe_checkout_session) | ||
charge.comment = "Stripe checkout failed." | ||
charge.save! | ||
end | ||
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return charge | ||
end | ||
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def error_message | ||
errors.to_sentence | ||
end | ||
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def errors | ||
@errors ||= [] | ||
end | ||
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private | ||
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def json_to_hash(obj) | ||
JSON.parse(obj.to_json) | ||
rescue | ||
{} | ||
end | ||
end |
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# frozen_string_literal: true | ||
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||
# Copyright 2021 DisCon III | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
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# Money::StripeCheckoutSucceeded updates the Charge record associated with that checkout session to indicate that the payment succeeded. | ||
# Truthy returns mean that everything updated correctly, otherwise check #errors for failure details. | ||
class Money::StripeCheckoutSucceeded | ||
attr_reader :charge, :stripe_checkout_session | ||
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def initialize(charge:, stripe_checkout_session:) | ||
@charge = charge | ||
@stripe_checkout_session = stripe_checkout_session | ||
end | ||
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def call | ||
reservation.transaction do | ||
charge.state == ::Charge::SUCCESSFUL | ||
charge.stripe_response = json_to_hash(stripe_checkout_session) | ||
charge.comment = ChargeDescription.new(charge).for_users | ||
charge.save! | ||
if fully_paid? | ||
reservation.update!(state: Reservation::PAID) | ||
else | ||
reservation.update!(state: Reservation::INSTALMENT) | ||
end | ||
end | ||
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trigger_payment_mailer | ||
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return charge | ||
end | ||
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def error_message | ||
errors.to_sentence | ||
end | ||
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def errors | ||
@errors ||= [] | ||
end | ||
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private | ||
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def json_to_hash(obj) | ||
JSON.parse(obj.to_json) | ||
rescue | ||
{} | ||
end | ||
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def fully_paid? | ||
reservation.charges.successful.sum(&:amount_cents) >= reservation.membership.price_cents | ||
end | ||
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def outstanding_amount | ||
raise "todo" | ||
end | ||
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def trigger_payment_mailer | ||
if charge.reservation.instalment? | ||
PaymentMailer.instalment( | ||
user: current_user, | ||
charge: charge, | ||
outstanding_amount: (outstanding_amount - charge.amount).format(with_currency: true) | ||
).deliver_later | ||
else | ||
PaymentMailer.paid( | ||
user: current_user, | ||
charge: charge, | ||
).deliver_later | ||
end | ||
end | ||
end |
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