feat: 精确耗电计算(接入充值记录接口)

- 新增 queryISIMSRoomBuyRecord 充值记录获取 + 10分钟缓存

- 日耗电 = 剩余变化 + 当天充值电量(电价0.535元/度)

- 月度汇总增加充值次数/电量/金额

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

go/buy_records.go

@@ -0,0 +1,118 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+	"time"
+)
+
+// buy_records.go - 充值/缴费记录获取与缓存
+// 接口: POST /app/electric/queryISIMSRoomBuyRecord
+// 返回每笔充值记录(金额/类型/时间)，用于精确计算日耗电
+
+// buyRecord 单笔充值记录
+type buyRecord struct {
+	Date   string  `json:"date"`    // 充值日期 YYYY-MM-DD
+	Money  float64 `json:"money"`   // 充值金额(元)
+	Kwh    float64 `json:"kwh"`     // 换算电量(度) = money / price
+	Type   string  `json:"type"`    // 现金充值 / 下发补助
+	Detail string  `json:"detail"`  // 完整时间 YYYY-M-D H:M:S
+}
+
+// 充值记录缓存
+var (
+	buyRecordsCache []buyRecord
+	buyRecordsTime  int64
+)
+
+// queryBuyRecords 获取某房间的充值记录（需 application 域 shiroJID）
+func queryBuyRecords(shiroJID string, room *roomInfo) ([]buyRecord, error) {
+	price := unitPrice()
+	s := newXfSession(shiroJID)
+	body := fmt.Sprintf("areaId=%s&buildingCode=%s&floorCode=%s&roomCode=%s&mdtype=room&platform=%s",
+		room.AreaID, room.BuildingCode, room.FloorCode, room.RoomCode, xfPlatform)
+	b, _, err := s.postForm("https://application.xiaofubao.com/app/electric/queryISIMSRoomBuyRecord",
+		body, "https://application.xiaofubao.com/")
+	if err != nil {
+		return nil, err
+	}
+	var res struct {
+		StatusCode flexInt `json:"statusCode"`
+		Rows       []struct {
+			DateTime  string `json:"datetime"`   // "2026-8-23 0:45:49"
+			BuyType   string `json:"buytype"`    // 现金充值 / 下发补助
+			BuyUsing  string `json:"buyusingtpe"` // 照明用电
+			Money     string `json:"money"`      // "40.00"
+		} `json:"rows"`
+	}
+	if err := json.Unmarshal(b, &res); err != nil {
+		return nil, err
+	}
+	if res.StatusCode != 0 {
+		return nil, fmt.Errorf("queryISIMSRoomBuyRecord 失败: %s", string(b))
+	}
+
+	var records []buyRecord
+	for _, r := range res.Rows {
+		var money float64
+		fmt.Sscanf(r.Money, "%f", &money)
+		rec := buyRecord{
+			Date:   datePart(r.DateTime),
+			Money:  round2(money),
+			Kwh:    round2(money / price),
+			Type:   r.BuyType,
+			Detail: r.DateTime,
+		}
+		records = append(records, rec)
+	}
+	return records, nil
+}
+
+// getBuyRecordsCached 获取充值记录（带缓存，10 分钟有效）
+func getBuyRecordsCached(shiroJID string, room *roomInfo) ([]buyRecord, error) {
+	if buyRecordsCache != nil && time.Now().Unix()-buyRecordsTime < 600 {
+		return buyRecordsCache, nil
+	}
+	recs, err := queryBuyRecords(shiroJID, room)
+	if err != nil {
+		return nil, err
+	}
+	buyRecordsCache = recs
+	buyRecordsTime = time.Now().Unix()
+	return recs, nil
+}
+
+// rechargeKwhByDate 生成 map[date] -> 当天充值电量(度)
+func rechargeKwhByDate(records []buyRecord) map[string]float64 {
+	m := map[string]float64{}
+	for _, r := range records {
+		m[r.Date] = round2(m[r.Date] + r.Kwh)
+	}
+	return m
+}
+
+// unitPrice 电价（元/度），默认 0.535，可用 XF_PRICE 环境变量覆盖
+func unitPrice() float64 {
+	if v := envOr("XF_PRICE", ""); v != "" {
+		var p float64
+		if _, err := fmt.Sscanf(v, "%f", &p); err == nil && p > 0 {
+			return p
+		}
+	}
+	return 0.535
+}
+
+// datePart 从 "2026-8-23 0:45:49" 提取 "2026-08-23"
+func datePart(dt string) string {
+	parts := strings.SplitN(dt, " ", 2)
+	if len(parts) == 0 {
+		return dt
+	}
+	// 规范化月份/日补零
+	ymd := strings.Split(parts[0], "-")
+	if len(ymd) != 3 {
+		return parts[0]
+	}
+	return fmt.Sprintf("%s-%02s-%02s", ymd[0], ymd[1], ymd[2])
+}

go/history.go

@@ -24,6 +24,8 @@ type dailyStat struct {
 	Surplus  float64  `json:"surplus"`
 	Amount   float64  `json:"amount"`
 	Usage    *float64 `json:"usage"`     // nil 表示无前一天基线
+	Recharge *float64 `json:"recharge"`  // 当天充值电量(度), nil=无充值
+	Money    *float64 `json:"money"`     // 当天充值金额(元), nil=无充值
 }
 
 // monthSummary 月度汇总
@@ -34,7 +36,9 @@ type monthSummary struct {
 	EndSurplus   *float64 `json:"end_surplus"`    // 月末末次电量
 	TotalUsage   *float64 `json:"total_usage"`    // 月总耗电
 	AvgUsage     *float64 `json:"avg_usage"`      // 日均耗电
-	RechargeDays int      `json:"recharge_days"`  // 疑似充值天数（电量回升）
+	RechargeDays int      `json:"recharge_days"`  // 充值天数
+	RechargeKwh  *float64 `json:"recharge_kwh"`   // 月充值电量(度)
+	RechargeMoney *float64 `json:"recharge_money"` // 月充值金额(元)
 	MaxUsage     *float64 `json:"max_usage"`      // 单日最大耗电
 }
 
@@ -113,9 +117,10 @@ func getRecords() []record {
 	return records
 }
 
-// buildDailyStats 按日期升序生成每日统计（含日耗电 = 前一天剩余 - 当天剩余）
+// buildDailyStats 按日期升序生成每日统计（含日耗电 = 前一天剩余 - 当天剩余 + 当天充值电量）
 // 注意: 耗电计算跨月时使用上月末记录作为基线（若存在）
-func buildDailyStats(records []record, month string) []dailyStat {
+// rechargeMap: date -> 当天充值电量(度)；精确修正充值当天的耗电
+func buildDailyStats(records []record, month string, rechargeMap map[string]float64) []dailyStat {
 	all := loadHistory()
 	// 若指定月份，额外包含上一月最后一条记录作为基线（不计入本月输出）
 	var prevMonthLast *record
@@ -151,13 +156,23 @@ func buildDailyStats(records []record, month string) []dailyStat {
 	for _, r := range target {
 		var usage *float64
 		if prevSurplus != nil {
-			u := round2(*prevSurplus - r.Surplus)
+			// 精确耗电 = 剩余变化 + 当天充值电量
+			u := round2(*prevSurplus - r.Surplus + rechargeMap[r.Date])
 			if u < 0 {
-				u = 0 // 充值/异常归零
+				u = 0 // 极端异常(数据缺口)归零
 			}
 			usage = &u
 		}
-		daily = append(daily, dailyStat{Date: r.Date, Surplus: r.Surplus, Amount: r.Amount, Usage: usage})
+		var recharge, money *float64
+		if kwh, ok := rechargeMap[r.Date]; ok && kwh > 0 {
+			recharge = &kwh
+			m := round2(kwh * unitPrice())
+			money = &m
+		}
+		daily = append(daily, dailyStat{
+			Date: r.Date, Surplus: r.Surplus, Amount: r.Amount,
+			Usage: usage, Recharge: recharge, Money: money,
+		})
 		s := r.Surplus
 		prevSurplus = &s
 	}
@@ -203,6 +218,8 @@ func buildMonthSummary(daily []dailyStat, month string) *monthSummary {
 
 	var total float64
 	var max float64
+	var totalRechargeKwh float64
+	var totalRechargeMoney float64
 	rechargeDays := 0
 	countWithUsage := 0
 	for _, d := range daily {
@@ -213,14 +230,16 @@ func buildMonthSummary(daily []dailyStat, month string) *monthSummary {
 			}
 			countWithUsage++
 		}
-		// 疑似充值：当天剩余比前一天高
+		if d.Recharge != nil {
+			totalRechargeKwh += *d.Recharge
+			rechargeDays++
+		}
+		if d.Money != nil {
+			totalRechargeMoney += *d.Money
 		}
-	// 充值与最大耗电基于原始升序记录重新精确计算
-	if len(daily) >= 2 {
-		rechargeDays = countRecharges(daily)
 	}
 
-	var totalP, avgP, maxP, startP, endP *float64
+	var totalP, avgP, maxP, startP, endP, rkwhP, rmoneyP *float64
 	startP, endP = &start, &end
 	totalP = &total
 	if countWithUsage > 0 {
@@ -228,6 +247,12 @@ func buildMonthSummary(daily []dailyStat, month string) *monthSummary {
 		avgP = &avg
 	}
 	maxP = &max
+	if totalRechargeKwh > 0 {
+		rkwhP = &totalRechargeKwh
+	}
+	if totalRechargeMoney > 0 {
+		rmoneyP = &totalRechargeMoney
+	}
 
 	return &monthSummary{
 		Month:         m,
@@ -237,17 +262,10 @@ func buildMonthSummary(daily []dailyStat, month string) *monthSummary {
 		TotalUsage:    totalP,
 		AvgUsage:      avgP,
 		RechargeDays:  rechargeDays,
+		RechargeKwh:   rkwhP,
+		RechargeMoney: rmoneyP,
 		MaxUsage:      maxP,
 	}
 }
 
-// countRecharges 统计疑似充值天数（当天剩余较前一天回升）
+
-func countRecharges(daily []dailyStat) int {
-	n := 0
-	for i := 1; i < len(daily); i++ {
-		if daily[i].Surplus > daily[i-1].Surplus {
-			n++
-		}
-	}
-	return n
-}

go/main.go

@@ -100,8 +100,21 @@ func apiHistory(w http.ResponseWriter, r *http.Request) {
 	month := q.Get("month") // YYYY-MM，空=全部
 
 	records := getRecords()
-	allDaily := buildDailyStats(records, "") // 全量（用于可用月份列表）
+
-	monthDaily := buildDailyStats(records, month)
+	// 获取充值记录（用于精确耗电计算）
+	rechargeMap := map[string]float64{}
+	var buyRecords []buyRecord
+	if c, err := loadCache(); err == nil {
+		if recs, err := getBuyRecordsCached(c.AppShiro, &c.Room); err == nil {
+			rechargeMap = rechargeKwhByDate(recs)
+			buyRecords = recs
+		} else {
+			fmt.Println("[充值] 获取充值记录失败:", err)
+		}
+	}
+
+	allDaily := buildDailyStats(records, "", rechargeMap)   // 全量（用于可用月份列表）
+	monthDaily := buildDailyStats(records, month, rechargeMap)
 
 	// 可用月份列表（降序）
 	months := availableMonths(records)
@@ -114,6 +127,7 @@ func apiHistory(w http.ResponseWriter, r *http.Request) {
 		"records":    monthDaily, // 升序每日统计（含 usage）
 		"daily":      monthDaily,
 		"summary":    summary,
+		"recharges":  buyRecords, // 充值记录明细
 		"all_count":  len(allDaily),
 	})
 }