package refundretry

import (
	"testing"
	"time"

	"hfb_sys/backend/internal/model"

	"go.uber.org/zap"
	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
	"gorm.io/gorm/logger"
)

func setupRefundRetryTestDB(t *testing.T) *gorm.DB {
	t.Helper()
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{
		Logger: logger.Default.LogMode(logger.Silent),
	})
	if err != nil {
		t.Fatalf("创建测试数据库失败: %v", err)
	}
	if err := db.AutoMigrate(&model.PaymentOrder{}, &model.RentalOrder{}); err != nil {
		t.Fatalf("数据库迁移失败: %v", err)
	}
	return db
}

func TestRetryBackoffCapsAtOneHour(t *testing.T) {
	cases := []struct {
		retryCount int
		want       time.Duration
	}{
		{retryCount: 1, want: 5 * time.Minute},
		{retryCount: 2, want: 10 * time.Minute},
		{retryCount: 3, want: 20 * time.Minute},
		{retryCount: 4, want: 40 * time.Minute},
		{retryCount: 5, want: time.Hour},
		{retryCount: 10, want: time.Hour},
	}
	for _, tc := range cases {
		if got := retryBackoff(tc.retryCount); got != tc.want {
			t.Fatalf("retryBackoff(%d) = %s, want %s", tc.retryCount, got, tc.want)
		}
	}
}

func TestMarkRetryFailedStopsAtMaxCount(t *testing.T) {
	db := setupRefundRetryTestDB(t)
	job := New(db, nil, zap.NewNop(), nil)
	now := time.Date(2026, 6, 14, 12, 0, 0, 0, time.UTC)
	row := model.PaymentOrder{
		PaymentNo:    "PAY202606140101",
		OrderID:      1,
		OrderNo:      "ORD202606140101",
		UserID:       2,
		Provider:     "mock",
		ThirdOrderID: "REF202606140101",
		BizType:      "admin_refund",
		Status:       "failed",
		RetryCount:   maxRetryCount - 1,
	}
	if err := db.Create(&row).Error; err != nil {
		t.Fatalf("创建退款单失败: %v", err)
	}

	if err := job.markRetryFailed(t.Context(), row, now); err != nil {
		t.Fatalf("markRetryFailed() error = %v", err)
	}
	var latest model.PaymentOrder
	if err := db.First(&latest, row.ID).Error; err != nil {
		t.Fatalf("查询退款单失败: %v", err)
	}
	if latest.RetryCount != maxRetryCount {
		t.Fatalf("RetryCount = %d, want %d", latest.RetryCount, maxRetryCount)
	}
	if latest.LastRetryAt == nil || !latest.LastRetryAt.Equal(now) {
		t.Fatalf("LastRetryAt = %v, want %v", latest.LastRetryAt, now)
	}
	if latest.NextRetryAt != nil {
		t.Fatalf("NextRetryAt = %v, want nil after max retry", latest.NextRetryAt)
	}
}

func TestResetRetryClearsRetryFields(t *testing.T) {
	db := setupRefundRetryTestDB(t)
	job := New(db, nil, zap.NewNop(), nil)
	now := time.Date(2026, 6, 14, 12, 0, 0, 0, time.UTC)
	next := now.Add(time.Hour)
	row := model.PaymentOrder{
		PaymentNo:    "PAY202606140102",
		OrderID:      1,
		OrderNo:      "ORD202606140102",
		UserID:       2,
		Provider:     "mock",
		ThirdOrderID: "REF202606140102",
		BizType:      "admin_refund",
		Status:       "refunded",
		RetryCount:   3,
		LastRetryAt:  &now,
		NextRetryAt:  &next,
	}
	if err := db.Create(&row).Error; err != nil {
		t.Fatalf("创建退款单失败: %v", err)
	}

	if err := job.resetRetry(t.Context(), row.ID); err != nil {
		t.Fatalf("resetRetry() error = %v", err)
	}
	var latest model.PaymentOrder
	if err := db.First(&latest, row.ID).Error; err != nil {
		t.Fatalf("查询退款单失败: %v", err)
	}
	if latest.RetryCount != 0 || latest.LastRetryAt != nil || latest.NextRetryAt != nil {
		t.Fatalf("retry fields = count:%d last:%v next:%v, want zero/nil", latest.RetryCount, latest.LastRetryAt, latest.NextRetryAt)
	}
}