package fake_test

import (
	"context"
	"strings"
	"testing"

	"github.com/wangjia/pay/internal/provider"
	"github.com/wangjia/pay/internal/provider/fake"
)

func TestFakeCreateAndVerify(t *testing.T) {
	var _ provider.Provider = fake.New() // 编译期断言满足接口

	p := fake.New()
	ctx := context.Background()

	sess, err := p.Create(ctx, provider.CreateRequest{OutTradeNo: "PAY-1", AmountMinor: 29990000, Currency: "USDT"})
	if err != nil {
		t.Fatalf("create: %v", err)
	}
	if !strings.HasPrefix(sess.ProviderRef, "FAKE-PAY-1") || sess.RenderType != provider.RenderCryptoAddress {
		t.Fatalf("session = %+v", sess)
	}

	ev, err := p.VerifyCallback(ctx, provider.CallbackInput{
		Raw: []byte(`{"provider_ref":"FAKE-PAY-1","status":"succeeded","amount_minor":29990000,"currency":"USDT"}`),
	})
	if err != nil {
		t.Fatalf("verify: %v", err)
	}
	if ev.ProviderRef != "FAKE-PAY-1" || ev.Status != provider.PaidSucceeded || ev.PaidAmountMinor != 29990000 {
		t.Fatalf("event = %+v", ev)
	}
}

// TestFakeCreateRedirect 覆盖 Create 按 metadata["render"]="redirect" 出的 redirect
// 三态分支(pangolin /buy 联调门控,见 fake.go Create 注释)。
func TestFakeCreateRedirect(t *testing.T) {
	p := fake.New()
	ctx := context.Background()

	sess, err := p.Create(ctx, provider.CreateRequest{
		OutTradeNo: "PAY-REDIRECT-1", AmountMinor: 100, Currency: "USDT",
		Metadata: map[string]string{"render": "redirect"},
	})
	if err != nil {
		t.Fatalf("create: %v", err)
	}
	if sess.RenderType != provider.RenderRedirect {
		t.Fatalf("render_type = %v, want redirect", sess.RenderType)
	}
	url, _ := sess.Payload["url"].(string)
	if !strings.Contains(url, "mock-cashier") || !strings.Contains(url, "PAY-REDIRECT-1") {
		t.Fatalf("payload.url = %q, want 含 mock-cashier 与 out_trade_no", url)
	}
}

// TestFakeCreateQR 覆盖 metadata["render"]="qr" 分支。
func TestFakeCreateQR(t *testing.T) {
	p := fake.New()
	ctx := context.Background()

	sess, err := p.Create(ctx, provider.CreateRequest{
		OutTradeNo: "PAY-QR-1", AmountMinor: 12345, Currency: "CNY",
		Metadata: map[string]string{"render": "qr"},
	})
	if err != nil {
		t.Fatalf("create: %v", err)
	}
	if sess.RenderType != provider.RenderQR {
		t.Fatalf("render_type = %v, want qr", sess.RenderType)
	}
	if _, ok := sess.Payload["qr_content"]; !ok {
		t.Fatalf("payload 缺 qr_content: %+v", sess.Payload)
	}
	if got := sess.Payload["display_amount"]; got != "12345" {
		t.Fatalf("payload.display_amount = %v, want 12345", got)
	}
	if got := sess.Payload["currency"]; got != "CNY" {
		t.Fatalf("payload.currency = %v, want CNY", got)
	}
}

func TestFakeQueryPreset(t *testing.T) {
	p := fake.New()
	ctx := context.Background()

	ev, _ := p.Query(ctx, provider.QueryRequest{ProviderRef: "FAKE-PAY-2"})
	if ev.Status != provider.PaidPending {
		t.Fatalf("默认应 pending, got %v", ev.Status)
	}

	p.SetQueryResult("FAKE-PAY-2", provider.PaidEvent{
		ProviderRef: "FAKE-PAY-2", Status: provider.PaidSucceeded, PaidAmountMinor: 100, PaidCurrency: "USDT",
	})
	ev2, _ := p.Query(ctx, provider.QueryRequest{ProviderRef: "FAKE-PAY-2"})
	if ev2.Status != provider.PaidSucceeded || ev2.PaidAmountMinor != 100 {
		t.Fatalf("预置后应 succeeded, got %+v", ev2)
	}
}