package oci

import (
	"strings"
	"time"

	"oci-portal/internal/model"
)

// AccountProfile 是一次云端订阅查询得到的账户信息快照。
type AccountProfile struct {
	AccountType      string
	SubscriptionID   string
	ServiceName      string
	PaymentModel     string
	SubscriptionTier string
	PromotionStatus  string
	PromotionAmount  float32
	PromotionExpires *time.Time
}

// ClassifyAccount 按订阅字段判定账户类别：
//   - paymentModel 非空且不是 FREE_TRIAL：付费；
//   - paymentModel 为 FREE_TRIAL 时，promotion ACTIVE 或 tier FREE_AND_TRIAL
//     判为试用；promotion EXPIRED 或 tier FREE 判为免费（试用权益已结束）；
//   - 其余情况无法判定。
func ClassifyAccount(paymentModel, subscriptionTier, promotionStatus string) string {
	pm := strings.ToUpper(strings.TrimSpace(paymentModel))
	tier := strings.ToUpper(strings.TrimSpace(subscriptionTier))
	promo := strings.ToUpper(strings.TrimSpace(promotionStatus))
	if pm != "" && pm != "FREE_TRIAL" {
		return model.AccountTypePaid
	}
	if pm == "FREE_TRIAL" {
		switch {
		case promo == "ACTIVE" || tier == "FREE_AND_TRIAL":
			return model.AccountTypeTrial
		case promo == "EXPIRED" || tier == "FREE":
			return model.AccountTypeFree
		}
	}
	return model.AccountTypeUnknown
}