135 lines
5.4 KiB
Go
135 lines
5.4 KiB
Go
package domain
|
||
|
||
import (
|
||
"encoding/base64"
|
||
"errors"
|
||
"fmt"
|
||
"strconv"
|
||
)
|
||
|
||
// Stars 本地账本领域模型（无 TL 类型，镜像 boost.go 风格）。本实现是本地账本、
|
||
// 非真实支付：余额为整数 Stars（线上 Nanos 恒 0），借记原子、永不为负。
|
||
|
||
// StarsBalance 是一个账号的当前可用 Stars 余额。
|
||
type StarsBalance struct {
|
||
UserID int64
|
||
Balance int64 // 当前可花费 Stars，恒 >= 0
|
||
Granted bool // 起始授予是否已应用（惰性首读授予的幂等守卫）
|
||
}
|
||
|
||
// StarsTransactionReason 标记一条流水的语义（投影到 tg.StarsTransaction 的标志位/标题）。
|
||
type StarsTransactionReason string
|
||
|
||
const (
|
||
StarsReasonGrant StarsTransactionReason = "grant" // 起始余额自动授予
|
||
StarsReasonTopup StarsTransactionReason = "topup" // 充值（本地铸造）
|
||
StarsReasonReaction StarsTransactionReason = "reaction" // 付费 reaction 花费
|
||
StarsReasonGift StarsTransactionReason = "gift" // 星礼花费/收取
|
||
StarsReasonGiftUpgrade StarsTransactionReason = "gift_upgrade" // 普通礼物升级为唯一礼物
|
||
StarsReasonGiftTransfer StarsTransactionReason = "gift_transfer"
|
||
StarsReasonGiftResale StarsTransactionReason = "gift_resale"
|
||
StarsReasonGiftOffer StarsTransactionReason = "gift_offer"
|
||
StarsReasonGiftAuction StarsTransactionReason = "gift_auction"
|
||
StarsReasonGiftPrepaid StarsTransactionReason = "gift_prepaid_upgrade"
|
||
StarsReasonGiftDrop StarsTransactionReason = "gift_drop_original_details"
|
||
StarsReasonPaidMedia StarsTransactionReason = "paid_media" // 付费媒体解锁
|
||
StarsReasonPaidMessage StarsTransactionReason = "paid_message" // 频道 Direct Message 花费
|
||
StarsReasonSuggestedPost StarsTransactionReason = "suggested_post"
|
||
StarsReasonAdjust StarsTransactionReason = "adjust" // 兜底/人工调整
|
||
)
|
||
|
||
// StarsTransaction 是一条账本流水。amount 带符号：贷记 > 0（含 refund/收取），借记 < 0。
|
||
type StarsTransaction struct {
|
||
ID int64 // 单调递增账本 id（keyset 游标）
|
||
UserID int64 // 账本归属
|
||
Peer Peer // 对手方（grant/topup 等无对手时为零 Peer）
|
||
Amount int64 // 带符号金额
|
||
Date int // Unix 秒
|
||
Reason StarsTransactionReason
|
||
Title string // 可选，投影到 tg.StarsTransaction.Title
|
||
Description string // 可选，投影到 tg.StarsTransaction.Description
|
||
}
|
||
|
||
// IsCredit 报告该流水是否为入账（贷记），投影到 tg.StarsTransaction.Refund。
|
||
func (t StarsTransaction) IsCredit() bool { return t.Amount > 0 }
|
||
|
||
// StarsTransactionPage 是一页账本流水 + 当前余额 + 分页游标 + 对手方用户富化集合。
|
||
type StarsTransactionPage struct {
|
||
Balance int64
|
||
Transactions []StarsTransaction
|
||
NextOffset string // 空表示无更多页（DrKLO 据此停止翻页，勿在末页给非空值）
|
||
Users []User // History 中提到的对手方用户，供 tg Users 富化
|
||
}
|
||
|
||
// TonTransaction is an entry in telesrv's internal nanoton ledger. It models
|
||
// the Telegram TON-denominated gift UI without contacting a wallet, Fragment,
|
||
// a TON node, or any blockchain service.
|
||
type TonTransaction struct {
|
||
ID int64
|
||
UserID int64
|
||
Peer Peer
|
||
GiftID int64
|
||
Amount int64 // signed nanoton amount
|
||
Date int
|
||
Reason StarsTransactionReason
|
||
Title string
|
||
Description string
|
||
}
|
||
|
||
type TonTransactionPage struct {
|
||
Balance int64
|
||
Transactions []TonTransaction
|
||
NextOffset string
|
||
Users []User
|
||
}
|
||
|
||
// Stars 账本边界常量。
|
||
const (
|
||
// DefaultStarsStartingGrant 是惰性首读授予的起始 Stars 余额（本地测试用）。
|
||
DefaultStarsStartingGrant = 1000
|
||
// MaxStarsTransactionsLimit 是 getStarsTransactions 单页上限。
|
||
MaxStarsTransactionsLimit = 100
|
||
// MaxStarsTransactionsOffsetBytes 是 keyset 游标字符串长度上限。
|
||
MaxStarsTransactionsOffsetBytes = 64
|
||
)
|
||
|
||
// Stars 账本哨兵错误（rpc 层 errors.Is 匹配后映射为 tgerr，仿 ErrPremiumRequired）。
|
||
var (
|
||
// ErrStarsInsufficient 表示余额不足以完成借记（映射 BALANCE_TOO_LOW）。
|
||
ErrStarsInsufficient = errors.New("stars: insufficient balance")
|
||
// ErrStarsInvalidAmount 表示金额非法（<=0）。
|
||
ErrStarsInvalidAmount = errors.New("stars: invalid amount")
|
||
)
|
||
|
||
// StarsPaymentRequiredError reports the minimum paid-message authorization the
|
||
// sender must include in allow_paid_stars. The authorization is a ceiling; the
|
||
// ledger debits only the channel's current configured price.
|
||
type StarsPaymentRequiredError struct {
|
||
Stars int64
|
||
}
|
||
|
||
func (e *StarsPaymentRequiredError) Error() string {
|
||
return fmt.Sprintf("stars: allow payment required: %d", e.Stars)
|
||
}
|
||
|
||
// EncodeStarsCursor 把 keyset 游标（最后一条流水 id）编码为客户端不透明字符串。
|
||
func EncodeStarsCursor(id int64) string {
|
||
return base64.RawURLEncoding.EncodeToString([]byte(strconv.FormatInt(id, 10)))
|
||
}
|
||
|
||
// DecodeStarsCursor 反解 EncodeStarsCursor；无法解析（含空串）时返回 ok=false，
|
||
// 调用方应据此从首页开始（客户端只会回传我们给过的游标，畸形仅作兜底）。
|
||
func DecodeStarsCursor(s string) (int64, bool) {
|
||
if s == "" {
|
||
return 0, false
|
||
}
|
||
raw, err := base64.RawURLEncoding.DecodeString(s)
|
||
if err != nil {
|
||
return 0, false
|
||
}
|
||
id, err := strconv.ParseInt(string(raw), 10, 64)
|
||
if err != nil || id <= 0 {
|
||
return 0, false
|
||
}
|
||
return id, true
|
||
}
|