package packagesilence

import (
	"time"

	packagedomain "github.com/break/junhong_cmp_fiber/internal/domain/package"
	"github.com/break/junhong_cmp_fiber/internal/model"
	"github.com/break/junhong_cmp_fiber/internal/model/dto"
	"github.com/break/junhong_cmp_fiber/pkg/constants"
)

// BuildView 构造套餐记录的沉默期展示信息；不适用沉默期时返回 nil。
// 待实名但已过截止、还没被扫描到的记录直接显示"沉默期已过期"（技术方案 §5.4）。
// 调用方只在总开关打开时调用。
func BuildView(usage *model.PackageUsage, now time.Time) *dto.PackageSilenceView {
	if usage == nil || usage.SilenceStatus == nil || *usage.SilenceStatus == "" {
		return nil
	}
	status := *usage.SilenceStatus
	effectiveExpired := usage.Status == constants.PackageUsageStatusPending &&
		packagedomain.IsSilenceEffectivelyExpired(status, usage.SilenceDeadlineAt, usage.SilenceAdjustPending, now)
	if effectiveExpired {
		status = constants.SilenceStatusExpired
	}
	return &dto.PackageSilenceView{
		SilenceStatus:            status,
		SilenceStatusName:        constants.SilenceStatusName(status, usage.SilenceExtendedDays > 0),
		SilenceStartAt:           usage.SilenceStartAt,
		SilencePeriodDays:        usage.SilencePeriodDays,
		SilenceDeadlineAt:        usage.SilenceDeadlineAt,
		SilenceExtendedDays:      usage.SilenceExtendedDays,
		SilencePaidExtendedDays:  usage.SilencePaidExtendedDays,
		SilenceExtensionCount:    usage.SilenceExtensionCount,
		SilenceFreeExtensionUsed: usage.SilenceFreeExtensionUsed,
		SilenceExpiredAt:         usage.SilenceExpiredAt,
		SilenceAdjustPending:     usage.SilenceAdjustPending,
		Extendable:               effectiveExpired,
	}
}