package ledger

import (
	"strings"
)

// VipRewardItem 是 VIP 资源组权益的轻量展示投影。
type VipRewardItem struct {
	ResourceID   int64
	ResourceCode string
	ResourceType string
	Name         string
	Quantity     int64
	ExpiresAtMS  int64
	AssetURL     string
	PreviewURL   string
	AnimationURL string
}

// VipLevel 是可购买 VIP 等级配置。
type VipLevel struct {
	Level                      int32
	Name                       string
	Status                     string
	PriceCoin                  int64
	DurationMS                 int64
	RewardResourceGroupID      int64
	RequiredRechargeCoinAmount int64
	UserRechargeCoinAmount     int64
	RechargeGateRequired       bool
	PurchaseLockedReason       string
	RewardItems                []VipRewardItem
	CanPurchase                bool
	SortOrder                  int32
	CreatedAtMS                int64
	UpdatedAtMS                int64
}

// UserVip 是用户当前会员状态。是否有效以 ExpiresAtMS 和当前时间判断。
type UserVip struct {
	UserID      int64
	Level       int32
	Name        string
	Active      bool
	StartedAtMS int64
	ExpiresAtMS int64
	UpdatedAtMS int64
}

// PurchaseVipCommand 是 App 购买或升级 VIP 的账务命令。
type PurchaseVipCommand struct {
	AppCode   string
	CommandID string
	UserID    int64
	Level     int32
}

// PurchaseVipReceipt 是购买 VIP 成功后的稳定回执。
type PurchaseVipReceipt struct {
	OrderID          string
	TransactionID    string
	Vip              UserVip
	CoinSpent        int64
	CoinBalanceAfter int64
	RewardItems      []VipRewardItem
}

// GrantVipCommand 是活动或后台发放 VIP 的统一入口命令。
type GrantVipCommand struct {
	AppCode        string
	CommandID      string
	TargetUserID   int64
	Level          int32
	GrantSource    string
	OperatorUserID int64
	Reason         string
}

// GrantVipReceipt 是赠送 VIP 成功后的稳定回执。
type GrantVipReceipt struct {
	TransactionID string
	Vip           UserVip
	RewardItems   []VipRewardItem
}

// AdminVipLevelCommand 是后台保存 VIP 等级配置的完整事实输入。
type AdminVipLevelCommand struct {
	Level                      int32
	Name                       string
	Status                     string
	PriceCoin                  int64
	DurationMS                 int64
	RewardResourceGroupID      int64
	RequiredRechargeCoinAmount int64
	SortOrder                  int32
}

func NormalizeVipGrantSource(source string) string {
	switch strings.ToLower(strings.TrimSpace(source)) {
	case VipGrantSourcePurchase:
		return VipGrantSourcePurchase
	case VipGrantSourceActivity:
		return VipGrantSourceActivity
	case VipGrantSourceAdmin:
		return VipGrantSourceAdmin
	case VipGrantSourceManagerCenter:
		return VipGrantSourceManagerCenter
	default:
		return ""
	}
}