package packagepkg

import (
	"testing"

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

// TestValidateExpiryBaseOverride 验证覆盖字段必须显式提交且仅接受既定枚举。
func TestValidateExpiryBaseOverride(t *testing.T) {
	fromPurchase := constants.PackageExpiryBaseFromPurchase
	invalid := "from_realname"
	tests := []struct {
		name      string
		value     *string
		submitted bool
		wantValue *string
		wantErr   bool
	}{
		{name: "字段缺失", wantErr: true},
		{name: "跟随默认", submitted: true},
		{name: "购买即生效", value: &fromPurchase, submitted: true, wantValue: &fromPurchase},
		{name: "非法枚举", value: &invalid, submitted: true, wantErr: true},
	}
	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			got, err := ValidateExpiryBaseOverride(test.value, test.submitted)
			if (err != nil) != test.wantErr {
				t.Fatalf("错误状态不符合预期：%v", err)
			}
			if test.wantValue != nil && (got == nil || *got != *test.wantValue) {
				t.Fatalf("覆盖值不符合预期：%v", got)
			}
			if test.wantValue == nil && !test.wantErr && got != nil {
				t.Fatalf("期望跟随默认，实际为：%v", *got)
			}
		})
	}
}

// TestEffectiveExpiryBase 验证覆盖优先于套餐默认值。
func TestEffectiveExpiryBase(t *testing.T) {
	pkg := &model.Package{ExpiryBase: constants.PackageExpiryBaseFromActivation}
	if got := EffectiveExpiryBase(pkg, nil); got != constants.PackageExpiryBaseFromActivation {
		t.Fatalf("无覆盖时应使用套餐默认值，实际为 %s", got)
	}
	override := constants.PackageExpiryBaseFromPurchase
	allocation := &model.ShopPackageAllocation{ExpiryBaseOverride: &override}
	if got := EffectiveExpiryBase(pkg, allocation); got != constants.PackageExpiryBaseFromPurchase {
		t.Fatalf("有覆盖时应使用覆盖值，实际为 %s", got)
	}
	pkg.ExpiryBase = constants.PackageExpiryBaseFromPurchase
	if got := EffectiveExpiryBase(pkg, allocation); got != constants.PackageExpiryBaseFromPurchase {
		t.Fatalf("套餐默认值变化不应改变覆盖结果，实际为 %s", got)
	}
}