package stripe_test

import (
	"context"
	"fmt"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	gostripe "github.com/stripe/stripe-go/v79"
	"github.com/stripe/stripe-go/v79/client"

	"github.com/wangjia/pay/internal/provider"
	st "github.com/wangjia/pay/internal/provider/stripe"
)

func fakeStripeRefundAPI(t *testing.T) *httptest.Server {
	return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		switch {
		case r.Method == http.MethodGet && strings.Contains(r.URL.Path, "/v1/checkout/sessions/cs_test_123"):
			// 未展开:payment_intent 是字符串 id,SDK 反序列化进 *PaymentIntent{ID}
			fmt.Fprint(w, `{"id":"cs_test_123","object":"checkout.session","payment_intent":"pi_test_456","amount_total":2999,"currency":"usd","payment_status":"paid"}`)
		case r.Method == http.MethodPost && strings.HasPrefix(r.URL.Path, "/v1/refunds"):
			fmt.Fprint(w, `{"id":"re_test_789","object":"refund","amount":2999,"currency":"usd","payment_intent":"pi_test_456","status":"succeeded"}`)
		default:
			http.Error(w, `{"error":{"message":"not found"}}`, http.StatusNotFound)
		}
	}))
}

func newStripeRefund(t *testing.T, ts *httptest.Server) *st.Provider {
	backends := &gostripe.Backends{
		API: gostripe.GetBackendWithConfig(gostripe.APIBackend, &gostripe.BackendConfig{URL: gostripe.String(ts.URL)}),
	}
	return st.New(client.New("sk_test_x", backends), "whsec_test_secret")
}

func TestStripeRefundSuccess(t *testing.T) {
	ts := fakeStripeRefundAPI(t)
	defer ts.Close()
	p := newStripeRefund(t, ts)

	if !p.Capabilities().SupportsRefund {
		t.Fatal("stripe Capabilities.SupportsRefund 应为 true")
	}
	ref, status, err := p.Refund(context.Background(), "cs_test_123", "rf-999", 2999, "requested_by_customer")
	if err != nil {
		t.Fatalf("refund: %v", err)
	}
	if status != provider.PaidSucceeded || ref != "re_test_789" {
		t.Fatalf("refund result: ref=%s status=%s", ref, status)
	}
}