yml2213andCursor
fcbd7715c7
腾讯活动链接大约 10 分钟后签名过期。从链接 timestamp 起满 8 分钟就换新码，避免买家扫到失效二维码。 Co-authored-by: Cursor <cursoragent@cursor.com>
123 lines
3.4 KiB
Go
123 lines
3.4 KiB
Go
package service
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import (
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"context"
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"net/url"
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"strconv"
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"strings"
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"time"
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"affiliate_dash/internal/model"
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)
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type rockRefreshCacheItem struct {
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response *RockRefreshResponse
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cachedAt time.Time
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}
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// 腾讯「查询绑定」按链接里的 timestamp 验签，大约 10 分钟后返回「签名已过期」。
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// 从签名时间起满 8 分钟就换一条，留出余量，买家不会扫到已经失效的码。
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const rockBindLinkMaxAge = 8 * time.Minute
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// 上游若仍返回同一条旧签名，不要每个轮询都再打一次。
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const rockBindLinkRetryGap = 15 * time.Second
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type rockBindLinkCacheItem struct {
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bindURL string
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qrURL string
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cachedAt time.Time // 链接上没有 timestamp 时，用写入时间代替签名时间
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fetchedAt time.Time
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}
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func rockBindLinkIssuedAt(bindURL string) (time.Time, bool) {
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parsed, err := url.Parse(strings.TrimSpace(bindURL))
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if err != nil {
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return time.Time{}, false
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}
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raw := strings.TrimSpace(parsed.Query().Get("timestamp"))
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if raw == "" {
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return time.Time{}, false
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}
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value, err := strconv.ParseInt(raw, 10, 64)
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if err != nil || value <= 0 {
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return time.Time{}, false
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}
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if value >= 1_000_000_000_000 {
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return time.UnixMilli(value), true
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}
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return time.Unix(value, 0), true
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}
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func rockBindLinkStillFresh(item rockBindLinkCacheItem, now time.Time) bool {
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if strings.TrimSpace(item.bindURL) == "" {
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return false
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}
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issued, ok := rockBindLinkIssuedAt(item.bindURL)
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if !ok {
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issued = item.cachedAt
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}
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if issued.IsZero() {
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return false
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}
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return now.Sub(issued) < rockBindLinkMaxAge
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}
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func (s *RockService) rememberBindLink(tokenID uint, bindURL, qrURL string) {
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bindURL = strings.TrimSpace(bindURL)
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if s == nil || tokenID == 0 || bindURL == "" {
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return
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}
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qrURL = strings.TrimSpace(qrURL)
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if qrURL == "" {
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qrURL = qrCodeURL(bindURL)
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}
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now := time.Now()
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s.bindLinkCache.Store(tokenID, rockBindLinkCacheItem{
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bindURL: bindURL,
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qrURL: qrURL,
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cachedAt: now,
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fetchedAt: now,
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})
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}
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// freshBindLink 只为仍在扫码的同一提货号重取活动链接。过期前复用缓存，避免每轮轮询都打 0666。
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func (s *RockService) freshBindLink(ctx context.Context, tokenID uint, orderNo string) (string, string) {
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if s == nil || s.client == nil || tokenID == 0 {
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return "", ""
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}
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var token model.RockToken
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if err := s.db.WithContext(ctx).First(&token, tokenID).Error; err != nil {
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return "", ""
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}
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if token.Status != model.RockStatusUsing || strings.TrimSpace(token.RedeemCode) == "" {
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return "", ""
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}
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if orderNo = strings.TrimSpace(orderNo); orderNo != "" && token.AssignedOrderNo != "" && token.AssignedOrderNo != orderNo {
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return "", ""
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}
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if item, ok := s.bindLinkCache.Load(token.ID); ok {
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cached := item.(rockBindLinkCacheItem)
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if rockBindLinkStillFresh(cached, time.Now()) {
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return cached.bindURL, cached.qrURL
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}
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if !cached.fetchedAt.IsZero() && time.Since(cached.fetchedAt) < rockBindLinkRetryGap {
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return cached.bindURL, cached.qrURL
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}
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}
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detail, err := s.client.GetRedeemDetail(ctx, token.RedeemCode)
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if err != nil || detail == nil || strings.TrimSpace(detail.BindURL) == "" {
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if item, ok := s.bindLinkCache.Load(token.ID); ok {
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cached := item.(rockBindLinkCacheItem)
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return cached.bindURL, cached.qrURL
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}
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return "", ""
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}
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bindURL := strings.TrimSpace(detail.BindURL)
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qrURL := strings.TrimSpace(detail.QRURL)
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s.rememberBindLink(token.ID, bindURL, qrURL)
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if qrURL == "" {
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qrURL = qrCodeURL(bindURL)
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}
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return bindURL, qrURL
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}
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