fix(usage): 统计按客户端本地日聚合 —— 修「29号却显示28号数据」时区 bug
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根因:服务端用量全按 UTC 预切天,UTC+8 用户在中国 0-8 点时 UTC 还是前一天, 「今天」就显示前一天数据。 改法(用户拍板:小时桶+查询带时区偏移): - migration 000017 `usage_hourly`(UTC 纪元小时整数桶,稀疏存储,空小时不落行)。 - ReportUsage 同时累加 usage_hourly(按 windowEnd 的 UTC 小时);usage_daily 保留作配额/今日。 - `UsageCurve(days, offsetMin)`:读 UTC 小时桶,按客户端时区偏移**重新聚合成本地日**曲线。 - `/v1/usage?tz_offset=分钟`;客户端 `usage()` 带 `DateTime.now().timeZoneOffset.inMinutes`。 - 客户端早已「取曲线最后一点当今日」,故只改服务端聚合 + 带偏移即可。 测试:store 时区分桶证明(UTC 18:00 在 UTC vs UTC+8 落不同本地日,锁住 bug 修复)+ migration v17 + usage_hourly 表;集成测试改喂 hourly;全量 go/flutter test 绿。 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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@@ -58,7 +58,16 @@ func (h *UsageHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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days = n
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}
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points, apiErr := h.svc.UsageCurve(r.Context(), userID, days)
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// tz_offset: client UTC offset in minutes (e.g. 480 for UTC+8), so the curve
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// is bucketed by the user's LOCAL calendar day. Absent/invalid → 0 (UTC).
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offsetMin := 0
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if v := r.URL.Query().Get("tz_offset"); v != "" {
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if n, err := strconv.Atoi(v); err == nil {
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offsetMin = n
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}
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}
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points, apiErr := h.svc.UsageCurve(r.Context(), userID, days, offsetMin)
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if apiErr != nil {
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apierr.WriteJSON(w, http.StatusInternalServerError, apiErr)
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return
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