package packagedomain

import (
	"testing"

	"github.com/break/junhong_cmp_fiber/internal/model"
	"github.com/break/junhong_cmp_fiber/pkg/constants"
)

// TestResolveTermsSnapshot 验证默认、覆盖及两种周期规则。
func TestResolveTermsSnapshot(t *testing.T) {
	override := constants.PackageExpiryBaseFromPurchase
	tests := []struct {
		name       string
		pkg        model.Package
		allocation *model.ShopPackageAllocation
		wantErr    bool
	}{
		{name: "自然月默认", pkg: model.Package{ExpiryBase: constants.PackageExpiryBaseFromActivation, CalendarType: constants.PackageCalendarTypeNaturalMonth, DurationMonths: 12}},
		{name: "按天覆盖", pkg: model.Package{ExpiryBase: constants.PackageExpiryBaseFromActivation, CalendarType: constants.PackageCalendarTypeByDay, DurationDays: 30}, allocation: &model.ShopPackageAllocation{ExpiryBaseOverride: &override}},
		{name: "非法生效条件", pkg: model.Package{ExpiryBase: "invalid", CalendarType: constants.PackageCalendarTypeByDay, DurationDays: 30}, wantErr: true},
		{name: "非法按天时长", pkg: model.Package{ExpiryBase: constants.PackageExpiryBaseFromPurchase, CalendarType: constants.PackageCalendarTypeByDay}, wantErr: true},
	}
	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			got, err := ResolveTermsSnapshot(&test.pkg, test.allocation)
			if (err != nil) != test.wantErr {
				t.Fatalf("错误状态不符合预期：%v", err)
			}
			if !test.wantErr && !got.IsValid() {
				t.Fatalf("快照应有效：%+v", got)
			}
		})
	}
}