# frozen_string_literal: true

require 'spec_helper'

RSpec.describe PaymentGateways::StripeController do
  include StripeStubs

  let!(:distributor) { create(:distributor_enterprise, with_payment_and_shipping: true) }
  let!(:order_cycle) { create(:simple_order_cycle, distributors: [distributor]) }
  let!(:order) { create(:order_with_totals, distributor:, order_cycle:) }
  let(:exchange) { order_cycle.exchanges.to_enterprises(distributor).outgoing.first }

  let(:order_cycle_distributed_variants) {
    instance_double(OrderCycles::DistributedVariantsService)
  }

  before do
    exchange.variants << order.line_items.first.variant
    allow(controller).to receive(:current_order).and_return(order)
  end

  describe "#confirm" do
    context "when the order is in payment state and a stripe payment intent is provided" do
      let(:user) { order.user }
      let(:payment_method) { create(:stripe_sca_payment_method) }
      let(:payment) {
        create(
          :payment,
          amount: order.total,
          state: "requires_authorization",
          payment_method:,
          response_code: "pi_123"
        )
      }

      before do
        Stripe.api_key = "sk_test_12345"
        stub_payment_intent_get_request
        stub_successful_capture_request(order:)

        allow(controller).to receive(:spree_current_user).and_return(user)
        user.bill_address = create(:address)
        user.ship_address = create(:address)
        user.save!

        order.update_attribute :state, "payment"
        order.payments << payment
        order.update_attribute :state, "confirmation"
      end

      it "creates a customer record" do
        order.update_columns(customer_id: nil)
        Customer.delete_all

        expect {
          get :confirm, params: { payment_intent: "pi_123" }
        }.to change { Customer.count }.by(1)
      end

      context "when the order cycle has closed" do
        it "redirects to shopfront with message if order cycle is expired" do
          allow(controller).to receive(:current_distributor).and_return(distributor)
          expect(controller).to receive(:current_order_cycle).and_return(order_cycle)
          expect(controller).to receive(:current_order).and_return(order).at_least(:once)
          expect(order_cycle).to receive(:closed?).and_return(true)
          expect(order).not_to receive(:empty!)
          expect(order).not_to receive(:assign_order_cycle!).with(nil)

          get :confirm, params: { payment_intent: "pi_123" }

          message = "The order cycle you've selected has just closed. " \
                    "Please contact us to complete your order ##{order.number}!"

          expect(response).to redirect_to shops_url
          expect(flash[:info]).to eq(message)
        end
      end

      it "completes the order and redirects to the order confirmation page" do
        expect(controller).to receive(:processing_succeeded).and_call_original
        expect(controller).to receive(:order_completion_reset).and_call_original

        get :confirm, params: { payment_intent: "pi_123" }

        expect(order.completed?).to be true
        expect(response).to redirect_to order_path(order, order_token: order.token)
        expect(flash[:notice]).to eq 'Your order has been processed successfully'
      end

      context 'when order completion fails' do
        it "redirects to checkout state path" do
          expect(controller).to receive(:process_payment_completion!).and_call_original
          allow(order).to receive(:process_payments!).and_return(false)
          expect(
            get(:confirm, params: { payment_intent: "pi_123" })
          ).to redirect_to checkout_step_path(step: :payment)

          expect(flash[:error]).to eq(
            'Payment could not be processed, please check the details you entered'
          )
        end
      end
    end

    context "when the order is not in payment state" do
      before { order.update_columns(state: "cart", completed_at: nil) }

      it "fails" do
        expect(controller).to receive(:processing_failed).and_call_original

        get :confirm, params: { payment_intent: "pi_123" }

        expect(order.completed?).to be false
        expect(response).to redirect_to checkout_step_path(step: :details)
        expect(flash[:error]).to eq(
          "Payment could not be processed, please check the details you entered"
        )
      end
    end

    context "when a valid payment intent is not provided" do
      it "fails" do
        expect(controller).to receive(:processing_failed).and_call_original

        get :confirm, params: { payment_intent: "pi_666" }

        expect(order.completed?).to be false
        expect(response).to redirect_to checkout_step_path(step: :details)
        expect(flash[:error]).to eq(
          "Payment could not be processed, please check the details you entered"
        )
      end
    end

    context "when items in the cart are invalid" do
      before do
        allow(order_cycle_distributed_variants).
          to receive(:distributes_order_variants?).and_return(false)
      end

      it "fails" do
        expect(controller).to receive(:processing_failed).and_call_original

        get :confirm, params: { payment_intent: "pi_123" }

        expect(order.completed?).to be false
        expect(response).to redirect_to checkout_step_path(step: :details)
        expect(flash[:error]).to eq(
          "Payment could not be processed, please check the details you entered"
        )
      end
    end

    context "when items run out of stock during order completion" do
      before do
        mock_order_check_stock_service(order)
      end

      it "redirects to cart when some items are out of stock" do
        allow(controller).to receive(:valid_payment_intent?).and_return true

        get :confirm, params: { payment_intent: "pi_123" }

        expect(response).to redirect_to checkout_step_path(step: :details)
      end

      context "handling pending payments" do
        let!(:payment) { create(:payment, state: "pending", amount: order.total, order:) }
        let!(:transaction_fee) {
          create(:adjustment, state: "open", amount: 10, order:, adjustable: payment)
        }

        before do
          order.save
          allow(order).to receive_message_chain(:payments, :completed) { [] }
          allow(order).to receive_message_chain(:payments, :incomplete) { [payment] }
          allow(controller).to receive(:valid_payment_intent?) { true }
          allow(controller).to receive(:last_payment) { payment }
          allow(payment).to receive(:adjustment) { transaction_fee }
        end

        it "cancels the payment and resets the order to cart" do
          expect(payment).to receive(:void_transaction!).and_call_original

          get :confirm, params: { payment_intent: "pi_123" }

          expect(response).to redirect_to checkout_step_path(step: :details)
          expect(flash[:notice]).to eq(
            "Payment cancelled: the checkout could not be completed due to stock issues."
          )

          expect(order.state).to eq "cart"
          expect(payment.state).to eq "void"
          expect(transaction_fee.reload.eligible).to eq false
          expect(transaction_fee.state).to eq "finalized"
        end
      end
    end
  end

  describe "#authorize" do
    let(:customer) { create(:customer) }
    let(:order) {
      create(:order_with_totals, customer:, distributor: customer.enterprise,
                                 state: "payment")
    }
    let(:payment_method) { create(:stripe_sca_payment_method) }
    let!(:payment) {
      create(
        :payment,
        payment_method:,
        redirect_auth_url: "https://stripe.com/redirect",
        response_code: "pi_123",
        order:,
        state: "requires_authorization"
      )
    }

    before do
      allow(controller).to receive(:spree_current_user) { current_user }
    end

    context "after returning from Stripe to authorize a payment" do
      let(:current_user) { order.user }

      context "with a valid payment intent" do
        let(:payment_intent) { "pi_123" }
        let(:payment_intent_response) { double(id: "pi_123", status: "requires_capture") }

        before do
          allow(Stripe::PaymentIntentValidator)
            .to receive_message_chain(:new, :call).and_return(payment_intent_response)

          allow(Spree::Order).to receive(:find_by) { order }
        end

        context "when the order is in payment state" do
          it "completes the payment" do
            expect(order).to receive(:process_payments!) do
              payment.complete!
            end

            get :authorize, params: { order_number: order.number, payment_intent: }

            expect(response).to redirect_to order_path(order)
            payment.reload
            expect(payment.state).to eq("completed")
            expect(payment.redirect_auth_url).to be nil
          end

          it "moves the order state to completed" do
            expect(order).to receive(:process_payments!) do
              payment.complete!
            end

            get :authorize, params: { order_number: order.number, payment_intent: }

            expect(order.reload.state).to eq "complete"
          end
        end

        context "when the order is already completed" do
          before do
            order.update_columns(state: "complete")
          end

          it "should still process the payment" do
            expect(order).to receive(:process_payments!) do
              payment.complete!
            end

            get :authorize, params: { order_number: order.number, payment_intent: }

            expect(response).to redirect_to order_path(order)
            payment.reload
            expect(payment.state).to eq("completed")
            expect(payment.redirect_auth_url).to be nil
          end
        end

        context "when the order cycle has closed" do
          it "should still authorize the payment successfully" do
            expect(order).to receive(:process_payments!) do
              payment.complete!
            end

            get :authorize, params: { order_number: order.number, payment_intent: }

            expect(response).to redirect_to order_path(order)
            payment.reload
            expect(payment.state).to eq("completed")
            expect(payment.redirect_auth_url).to be nil
          end
        end
      end

      context "when the payment intent response has errors" do
        let(:payment_intent) { "pi_123" }

        before do
          allow(Stripe::PaymentIntentValidator)
            .to receive_message_chain(:new, :call).and_raise(Stripe::StripeError, "error message")
        end

        it "does not complete the payment" do
          get :authorize, params: { order_number: order.number, payment_intent: }

          expect(response).to redirect_to order_path(order)
          expect(flash[:error]).to eq("The payment could not be processed. error message")
          payment.reload
          expect(payment.redirect_auth_url).to be nil
          expect(payment.state).to eq("failed")
        end
      end

      context "with an invalid last payment" do
        let(:payment_intent) { "valid" }
        let(:finder) { instance_double(Orders::FindPaymentService, last_payment: payment) }

        before do
          allow(payment).to receive(:response_code).and_return("invalid")
          allow(Orders::FindPaymentService).to receive(:new).with(order).and_return(finder)
          allow(Stripe::PaymentIntentValidator)
            .to receive_message_chain(:new, :call).and_return(payment_intent)
          stub_payment_intent_get_request(payment_intent_id: "valid")
        end

        it "does not complete the payment" do
          get :authorize, params: { order_number: order.number, payment_intent: }

          expect(response).to redirect_to order_path(order)
          expect(flash[:error]).to eq("The payment could not be processed. ")
          payment.reload
          expect(payment.redirect_auth_url).to eq("https://stripe.com/redirect")
          expect(payment.state).to eq("requires_authorization")
        end
      end
    end
  end

  def mock_order_check_stock_service(order)
    check_stock_service_mock = instance_double(Orders::CheckStockService)
    expect(Orders::CheckStockService).to receive(:new).and_return(check_stock_service_mock)
    expect(check_stock_service_mock).to receive(:sufficient_stock?).and_return(false).twice
    expect(check_stock_service_mock).to receive(:update_line_items).and_return(order.variants)
  end
end