package service

import (
	"fmt"
	"strings"
	"testing"

	"affiliate_dash/internal/model"
)

func TestCreateAPIClientEnforcesPerMerchantLimit(t *testing.T) {
	db := newServiceTestDB(t)
	codec, err := NewSecretCodec("test-master-key")
	if err != nil {
		t.Fatalf("codec: %v", err)
	}
	svc := NewMerchantService(db, codec, NewTenantService(db))
	merchant := model.Merchant{Code: "merchant-api-limit", Name: "限数商户", Status: model.MerchantStatusActive}
	if err := db.Create(&merchant).Error; err != nil {
		t.Fatalf("create merchant: %v", err)
	}
	for i := 0; i < MaxAPIClientsPerMerchant; i++ {
		if _, err := svc.CreateAPIClient(merchant.ID, CreateAPIClientInput{
			Name:   fmt.Sprintf("key-%d", i),
			Scopes: "products:read",
		}, 1); err != nil {
			t.Fatalf("create client %d: %v", i, err)
		}
	}
	_, err = svc.CreateAPIClient(merchant.ID, CreateAPIClientInput{
		Name:   "overflow",
		Scopes: "products:read",
	}, 1)
	if err == nil || !strings.Contains(err.Error(), fmt.Sprintf("最多可创建 %d 个", MaxAPIClientsPerMerchant)) {
		t.Fatalf("expected per-merchant limit error, got %v", err)
	}
}