package logic

import (
	"context"
	"sort"
	"strconv"
	"strings"
	"time"

	"bj_power_mes/ent"
	"bj_power_mes/ent/dailyplan"
	"bj_power_mes/ent/materialrequest"
	"bj_power_mes/ent/plcsendlog"
	"bj_power_mes/ent/torquerecord"
	"bj_power_mes/ent/workorder"
	"bj_power_mes/ent/workpiece"
	"bj_power_mes/ent/workpieceprocess"
)

const dashboardTTL = 60 // 秒，看板缓存

// 工位活动判定窗口：窗口内有工序实绩视为「运行中」，否则为空闲。
// 旧实现用历史累计 done>0 判定，导致工位永远显示「运行中」，永不离线。
const stationActiveWindow = 5 * time.Minute

// ============================================================
// 主入口：看板全量快照
// ============================================================

// DashboardSnapshot 一次返回全部看板数据。
// 各子模块单独容错：某块查询失败只降级该块，不影响整屏（看板是展示系统，宁可缺一块也不要白屏）。
func (s *Service) DashboardSnapshot(ctx context.Context) (*DashboardSnapshot, error) {
	return cachedTyped(ctx, s, "dashboard:snapshot", dashboardTTL, func() (*DashboardSnapshot, error) {
		now := time.Now()
		today := dayStart(now)
		snap := &DashboardSnapshot{UpdatedAt: fmtDashboardTime(now)}

		snap.Production = s.buildProduction(ctx, today)
		snap.Quality = s.buildQuality(ctx, today)
		snap.Trace = s.buildTrace(ctx)
		snap.Warehouse = s.buildWarehouse(ctx)
		snap.Equipment = s.buildEquipment(ctx, today)
		snap.Agv = s.buildAgv(ctx)
		snap.Performance = s.buildPerformance(ctx, today)
		snap.Alarms = s.buildAlarms(ctx, today)
		snap.Trends = s.buildTrends(ctx)
		snap.Events = s.buildEvents(ctx)
		return snap, nil
	})
}

// ============================================================
// 屏1/屏2：生产统计
// ============================================================

func (s *Service) buildProduction(ctx context.Context, today time.Time) ProductionStats {
	out := ProductionStats{}
	tomorrow := today.Add(24 * time.Hour)

	// 当日完工产量：以 workpiece.doneAt 落在本日为准
	if n, err := s.ctx.EntClient.Workpiece.Query().
		Where(workpiece.DoneAtGTE(today), workpiece.DoneAtLT(tomorrow)).Count(ctx); err == nil {
		out.OutputToday = n
	}

	// 当日计划产量：日排产表当日 planQty 合计
	out.TargetToday = s.sumDailyPlanQty(ctx, today.Format("2006-01-02"))
	out.AchieveRate = safeRate(float64(out.OutputToday), float64(out.TargetToday))

	// 在制：已进线未完工
	if n, err := s.ctx.EntClient.Workpiece.Query().
		Where(workpiece.DoneAtIsNil()).Count(ctx); err == nil {
		out.InLine = n
	}

	// 当日工序实绩合格率（一次合格率口径：工序判定而非拧紧单次）
	if steps, err := s.ctx.EntClient.WorkpieceProcess.Query().
		Where(workpieceprocess.EndedAtGTE(today), workpieceprocess.EndedAtLT(tomorrow)).
		All(ctx); err == nil {
		for _, st := range steps {
			if strings.EqualFold(st.Result, "NG") {
				out.QualityNg++
			} else {
				out.QualityOk++
			}
		}
	}
	out.QualifiedRate = safeRate(float64(out.QualityOk), float64(out.QualityOk+out.QualityNg))

	// 当日拧紧总次数
	if n, err := s.ctx.EntClient.TorqueRecord.Query().
		Where(torquerecord.TimeGTE(today), torquerecord.TimeLT(tomorrow)).Count(ctx); err == nil {
		out.TorqueTotal = n
	}

	out.WorkOrders = s.buildWorkOrderProgress(ctx, today)
	if len(out.WorkOrders) > 0 {
		cur := out.WorkOrders[0]
		out.CurrentOrder = &cur
	}

	// 工位状态汇总由 equipment 填充（避免重复查询），此处先占位
	return out
}

func (s *Service) buildWorkOrderProgress(ctx context.Context, today time.Time) []WorkOrderProgress {
	wos, err := s.ctx.EntClient.WorkOrder.Query().
		Order(ent.Desc(workorder.FieldID)).Limit(20).All(ctx)
	if err != nil {
		return []WorkOrderProgress{}
	}
	date := today.Format("2006-01-02")
	list := make([]WorkOrderProgress, 0, len(wos))
	for _, w := range wos {
		item := WorkOrderProgress{
			OrderNo:      w.WorkOrderNo,
			ProductName:  w.ProductName,
			TotalQty:     w.Quantity,
			DoneQty:      w.FinishedNum,
			NgQty:        w.FailNum,
			Progress:     safeRate(float64(w.FinishedNum), float64(w.Quantity)),
			Status:       w.Status,
			PlanStart:    fmtDashboardTime(orZero(w.PlanStart)),
			PlanEnd:      fmtDashboardTime(orZero(w.PlanEnd)),
			DailyPlanQty: s.sumDailyPlanQtyByOrder(ctx, date, w.WorkOrderNo),
			DailyDoneQty: s.countWorkpieceDoneByOrder(ctx, today, w.WorkOrderNo),
		}
		item.CurrentProcess = "工序 " + strings.TrimSpace(w.ProcessSeq)
		list = append(list, item)
	}
	// 进行中的工单排前面，同状态按 ID 倒序
	sort.SliceStable(list, func(i, j int) bool {
		return rankOrderStatus(list[i].Status) < rankOrderStatus(list[j].Status)
	})
	return list
}

// ============================================================
// 屏3：质量分析
// ============================================================

func (s *Service) buildQuality(ctx context.Context, today time.Time) QualityStats {
	out := QualityStats{OkRate: 0}
	tomorrow := today.Add(24 * time.Hour)

	// 近 200 条拧紧记录：用于绘制扭矩分布散点 + 计算统计量
	recs, err := s.ctx.EntClient.TorqueRecord.Query().
		Where(torquerecord.TimeGTE(today), torquerecord.TimeLT(tomorrow)).
		Order(ent.Asc(torquerecord.FieldTime)).Limit(200).All(ctx)
	if err != nil || len(recs) == 0 {
		out.TorqueScatter = []TorquePoint{}
		out.NgByStation = []RankItem{}
		out.NgByOperator = []RankItem{}
		out.DailyRate = s.buildDailyOkRate(ctx, 30)
		return out
	}

	stat := TorqueStat{Count: len(recs), MinStrain: recs[0].Strain, MaxStrain: recs[0].Strain}
	sum := 0.0
	scatter := make([]TorquePoint, 0, len(recs))
	ngByStation := map[string]int{}
	ngByOperator := map[string]int{}
	for i, r := range recs {
		if strings.EqualFold(r.Result, "NG") {
			stat.NgCount++
			ngByStation[r.StationNo]++
			ngByOperator[r.Operator]++
		} else {
			stat.OkCount++
		}
		sum += r.Strain
		if r.Strain < stat.MinStrain {
			stat.MinStrain = r.Strain
		}
		if r.Strain > stat.MaxStrain {
			stat.MaxStrain = r.Strain
		}
		scatter = append(scatter, TorquePoint{Seq: i + 1, Strain: r.Strain, Result: r.Result})
	}
	stat.AvgStrain = sum / float64(len(recs))

	// 规格上下限取自工艺步骤指标（step_criterion），取不到时回退为 0（前端不画控制线）
	if lo, hi, target, unit, ok := s.loadTorqueCriterion(ctx); ok {
		stat.LowerLimit = lo
		stat.UpperLimit = hi
		stat.Target = target
		stat.Unit = unit
	}

	out.Torque = stat
	out.OkRate = safeRate(float64(stat.OkCount), float64(stat.Count))
	out.TorqueScatter = scatter
	out.NgByStation = rankFromMap(ngByStation, "工位")
	out.NgByOperator = rankFromMap(ngByOperator, "")
	out.DailyRate = s.buildDailyOkRate(ctx, 30)
	return out
}

// buildDailyOkRate 近 n 日工序一次合格率（供合格率走势图）
func (s *Service) buildDailyOkRate(ctx context.Context, days int) []TrendPoint {
	now := time.Now()
	points := make([]TrendPoint, 0, days)
	for i := days - 1; i >= 0; i-- {
		d := dayStart(now.AddDate(0, 0, -i))
		next := d.Add(24 * time.Hour)
		ok, ng := 0, 0
		if steps, err := s.ctx.EntClient.WorkpieceProcess.Query().
			Where(workpieceprocess.EndedAtGTE(d), workpieceprocess.EndedAtLT(next)).All(ctx); err == nil {
			for _, st := range steps {
				if strings.EqualFold(st.Result, "NG") {
					ng++
				} else {
					ok++
				}
			}
		}
		points = append(points, TrendPoint{
			Time:          d.Format("01-02"),
			Output:        ok,
			QualifiedRate: safeRate(float64(ok), float64(ok+ng)),
		})
	}
	return points
}

// ============================================================
// 屏4：责任追溯
// ============================================================

// buildTrace 返回最近完工工件（含完整工序时间线），供大屏自动轮播
func (s *Service) buildTrace(ctx context.Context) TraceStats {
	wps, err := s.ctx.EntClient.Workpiece.Query().
		Where(workpiece.DoneAtNotNil()).
		Order(ent.Desc(workpiece.FieldDoneAt)).Limit(10).All(ctx)
	if err != nil {
		return TraceStats{Recent: []TraceItem{}}
	}
	items := make([]TraceItem, 0, len(wps))
	for _, w := range wps {
		item := TraceItem{
			Sn:      w.Sn,
			OrderNo: w.OrderNo,
			Status:  w.Status,
			OnlineAt: fmtDashboardTime(orZero(w.OnlineAt)),
			DoneAt:   fmtDashboardTime(orZero(w.DoneAt)),
		}
		if w.DoneAt != nil && w.OnlineAt != nil {
			item.DurationMin = w.DoneAt.Sub(*w.OnlineAt).Minutes()
		}
		item.Steps = s.loadTraceSteps(ctx, w.Sn)
		item.StepCount = len(item.Steps)
		for _, st := range item.Steps {
			if strings.EqualFold(st.Result, "NG") {
				item.NgCount++
			} else {
				item.OkCount++
			}
		}
		items = append(items, item)
	}
	return TraceStats{Recent: items}
}

// loadTraceSteps 单工件的工序时间线：工序 / 工位 / 操作人 / 时间 / 判定 / 扭矩
func (s *Service) loadTraceSteps(ctx context.Context, sn string) []TraceStep {
	steps, err := s.ctx.EntClient.WorkpieceProcess.Query().
		Where(workpieceprocess.SnEQ(sn)).
		Order(ent.Asc(workpieceprocess.FieldID)).All(ctx)
	if err != nil {
		return []TraceStep{}
	}
	// 该工件的拧紧数据：按工位聚合，用于展示每道工序的实际扭矩
	tq, _ := s.ctx.EntClient.TorqueRecord.Query().
		Where(torquerecord.SnEQ(sn)).All(ctx)
	type agg struct{ count, ng int; sum float64 }
	byStation := map[string]*agg{}
	for _, t := range tq {
		a, ok := byStation[t.StationNo]
		if !ok {
			a = &agg{}
			byStation[t.StationNo] = a
		}
		a.count++
		a.sum += t.Strain
		if strings.EqualFold(t.Result, "NG") {
			a.ng++
		}
	}

	out := make([]TraceStep, 0, len(steps))
	for _, st := range steps {
		ts := TraceStep{
			ProcessCode: st.ProcessCode,
			ProcessName: st.ProcessName,
			StationNo:   atoiSafe(st.StationNo),
			Operator:    st.Operator,
			Result:      st.Result,
			StartedAt:   fmtDashboardTime(orZero(st.StartedAt)),
			EndedAt:     fmtDashboardTime(orZero(st.EndedAt)),
		}
		if a, ok := byStation[st.StationNo]; ok && a.count > 0 {
			ts.TorqueCount = a.count
			ts.TorqueNg = a.ng
			ts.AvgStrain = a.sum / float64(a.count)
		}
		out = append(out, ts)
	}
	return out
}

// DashboardTrace 按需查询单个工件的追溯详情（供看板下钻，不进全量快照）
func (s *Service) DashboardTrace(ctx context.Context, sn string) (*TraceItem, error) {
	w, err := s.ctx.EntClient.Workpiece.Query().Where(workpiece.SnEQ(sn)).Only(ctx)
	if err != nil {
		return nil, err
	}
	item := &TraceItem{
		Sn:       w.Sn,
		OrderNo:  w.OrderNo,
		Status:   w.Status,
		OnlineAt: fmtDashboardTime(orZero(w.OnlineAt)),
		DoneAt:   fmtDashboardTime(orZero(w.DoneAt)),
		Steps:    s.loadTraceSteps(ctx, w.Sn),
	}
	item.StepCount = len(item.Steps)
	for _, st := range item.Steps {
		if strings.EqualFold(st.Result, "NG") {
			item.NgCount++
		} else {
			item.OkCount++
		}
	}
	return item, nil
}

// ============================================================
// 屏5：仓储动态（数据源 WMS 8890）
// ============================================================

func (s *Service) buildWarehouse(ctx context.Context) WarehouseStats {
	out := WarehouseStats{Available: false, ZoneDetail: []ZoneStock{}}
	if s.ctx.Wms == nil {
		return out
	}
	data, err := s.ctx.Wms.DisplayOverview(ctx)
	if err != nil {
		return out
	}
	out.Available = true
	out.TotalQty = toInt(data["totalQty"])
	out.BatchCount = toInt(data["batchCount"])
	out.SnInStock = toInt(data["snInStock"])
	out.SemiInStock = toInt(data["semiInStock"])
	out.PackageCount = toInt(data["packageCount"])
	out.InToday = toInt(data["inToday"])
	out.OutToday = toInt(data["outToday"])
	out.LockedQty = toInt(data["lockedQty"])
	out.MaterialTypes = toInt(data["materialTypes"])
	if t, ok := data["time"].(string); ok {
		out.UpdatedAt = t
	}
	if zm, ok := data["zoneDetail"].(map[string]any); ok {
		for k, v := range zm {
			parts := strings.SplitN(k, "/", 2)
			z := ZoneStock{Qty: toInt(v)}
			if len(parts) > 0 {
				z.Zone = parts[0]
			}
			if len(parts) > 1 {
				z.Quality = parts[1]
			}
			out.ZoneDetail = append(out.ZoneDetail, z)
		}
		sort.Slice(out.ZoneDetail, func(i, j int) bool {
			return out.ZoneDetail[i].Qty > out.ZoneDetail[j].Qty
		})
	} else {
		out.ZoneDetail = []ZoneStock{}
	}
	return out
}

// ============================================================
// 屏1：工位实时状态（3D 场景与工位矩阵共用）
// ============================================================

func (s *Service) buildEquipment(ctx context.Context, today time.Time) []StationState {
	// 工位主数据
	stMap := map[int]StationState{}
	if sts, err := s.ctx.EntClient.Station.Query().All(ctx); err == nil {
		for _, st := range sts {
			stMap[st.StationNo] = StationState{
				StationNo: st.StationNo,
				Name:      stationDisplayName(st.Name, st.StationNo),
				Status:    "idle",
			}
			if !strings.EqualFold(st.Status, "ENABLED") {
				v := stMap[st.StationNo]
				v.Status = "offline"
				stMap[st.StationNo] = v
			}
		}
	}
	// 工位主数据缺失时兜底生成 12 个工位
	for i := 1; i <= 12; i++ {
		if _, ok := stMap[i]; !ok {
			stMap[i] = StationState{StationNo: i, Name: stationDisplayName("", i), Status: "idle"}
		}
	}

	window := time.Now().Add(-stationActiveWindow)
	// 活动窗口内的工序实绩：判定 running/alarm，并取当前作业人与工件
	if recent, err := s.ctx.EntClient.WorkpieceProcess.Query().
		Where(workpieceprocess.EndedAtGTE(window)).
		Order(ent.Desc(workpieceprocess.FieldEndedAt)).All(ctx); err == nil {
		for _, r := range recent {
			no := atoiSafe(r.StationNo)
			v, ok := stMap[no]
			if !ok {
				continue
			}
			if v.Status == "offline" {
				continue
			}
			if v.LastActiveAt == "" {
				v.LastActiveAt = fmtDashboardTime(orZero(r.EndedAt))
				v.CurrentSn = r.Sn
				v.CurrentOperator = r.Operator
				v.CurrentProcess = r.ProcessCode
			}
			if v.Status != "alarm" {
				if strings.EqualFold(r.Result, "NG") {
					v.Status = "alarm"
				} else {
					v.Status = "running"
				}
			}
			stMap[no] = v
		}
	}

	// 当日累计：每个工位的完成数与 NG 数
	if steps, err := s.ctx.EntClient.WorkpieceProcess.Query().
		Where(workpieceprocess.EndedAtGTE(today)).All(ctx); err == nil {
		for _, r := range steps {
			no := atoiSafe(r.StationNo)
			v, ok := stMap[no]
			if !ok {
				continue
			}
			v.DoneToday++
			if strings.EqualFold(r.Result, "NG") {
				v.NgToday++
			}
			stMap[no] = v
		}
	}

	out := make([]StationState, 0, len(stMap))
	for _, v := range stMap {
		out = append(out, v)
	}
	sort.Slice(out, func(i, j int) bool { return out[i].StationNo < out[j].StationNo })
	return out
}

// ============================================================
// 3D 场景：AGV
// ============================================================

// buildAgv AGV 状态。
//
// RCS-2000 尚未对接，当前 Source="mock"：任务取自真实备料单（material_request.targetDock），
// 即「哪台 AGV 在给哪个工位送什么料」是真实业务事件，仅坐标/电量/进度为模拟值。
// 接入 RCS 后改为调用 /api/robot/controller/robot/query 填充真实坐标即可，前端无需改动。
func (s *Service) buildAgv(ctx context.Context) AgvStats {
	out := AgvStats{Source: "mock", Robots: []AgvRobot{}}
	reqs, err := s.ctx.EntClient.MaterialRequest.Query().
		Where(materialrequest.TargetDockNEQ("")).
		Order(ent.Desc(materialrequest.FieldID)).Limit(2).All(ctx)
	if err != nil || len(reqs) == 0 {
		// 无任务时给出两台待命 AGV，3D 场景不至于空场
		out.Robots = []AgvRobot{
			{Code: "AGV-01", Status: "idle", Battery: 88, FromDock: "DOCK21", ToDock: "", Progress: 0},
			{Code: "AGV-02", Status: "idle", Battery: 76, FromDock: "DOCK21", ToDock: "", Progress: 0},
		}
		return out
	}
	for i, r := range reqs {
		carrier := r.MaterialName
		if carrier == "" {
			carrier = r.MaterialCode
		}
		out.Robots = append(out.Robots, AgvRobot{
			Code:     "AGV-" + pad2(i+1),
			Status:   agvStatusFromRequest(r.Status),
			Battery:  90 - i*12,
			FromDock: "DOCK21",
			ToDock:   r.TargetDock,
			TaskNo:   r.RequestNo,
			Carrier:  carrier,
			// 进度按任务创建时间线性推进，60 秒走完全程；仅用于 3D 动效
			Progress: mockAgvProgress(r.CreatedAt),
		})
	}
	return out
}

// agvStatusFromRequest 备料单状态 → AGV 状态（3D 动效据此播放不同动画）
func agvStatusFromRequest(status string) string {
	switch strings.ToUpper(status) {
	case "LOCKED":
		return "loading"
	case "DELIVERING":
		return "moving"
	case "DONE":
		return "idle"
	default:
		return "waiting"
	}
}

// ============================================================
// 屏6：人员绩效
// ============================================================

func (s *Service) buildPerformance(ctx context.Context, today time.Time) []RankItem {
	steps, err := s.ctx.EntClient.WorkpieceProcess.Query().
		Where(workpieceprocess.EndedAtGTE(today)).All(ctx)
	if err != nil {
		return []RankItem{}
	}
	type agg struct {
		count, ok, ng int
		stations      map[int]bool
	}
	byOp := map[string]*agg{}
	for _, st := range steps {
		if st.Operator == "" {
			continue
		}
		a, ok := byOp[st.Operator]
		if !ok {
			a = &agg{stations: map[int]bool{}}
			byOp[st.Operator] = a
		}
		a.count++
		if strings.EqualFold(st.Result, "NG") {
			a.ng++
		} else {
			a.ok++
		}
		a.stations[atoiSafe(st.StationNo)] = true
	}
	out := make([]RankItem, 0, len(byOp))
	for op, a := range byOp {
		item := RankItem{
			Key:    op,
			Label:  op,
			Count:  a.count,
			OkCount: a.ok,
			NgCount: a.ng,
			OkRate: safeRate(float64(a.ok), float64(a.count)),
		}
		for no := range a.stations {
			item.StationNos = append(item.StationNos, no)
		}
		sort.Ints(item.StationNos)
		out = append(out, item)
	}
	sort.Slice(out, func(i, j int) bool { return out[i].Count > out[j].Count })
	return out
}

// ============================================================
// 报警 / 趋势 / 事件流
// ============================================================

func (s *Service) buildAlarms(ctx context.Context, today time.Time) []AlarmItem {
	items := []AlarmItem{}

	if n, err := s.ctx.EntClient.TorqueRecord.Query().
		Where(torquerecord.Result("NG"), torquerecord.TimeGTE(today)).Count(ctx); err == nil && n > 0 {
		items = append(items, AlarmItem{
			ID: "torque-ng", Level: "critical", Type: "quality",
			Target: "拧紧", Message: "当日拧紧 NG " + itoa(n) + " 次", Time: fmtDashboardTime(time.Now()),
			Status: "active",
		})
	}
	if n, err := s.ctx.EntClient.PlcSendLog.Query().
		Where(plcsendlog.Status("TIMEOUT")).Count(ctx); err == nil && n > 0 {
		items = append(items, AlarmItem{
			ID: "plc-timeout", Level: "critical", Type: "equipment",
			Target: "PLC", Message: "存在 PLC 下发超时 " + itoa(n) + " 条", Time: fmtDashboardTime(time.Now()),
			Status: "active",
		})
	}
	if wh := s.buildWarehouse(ctx); wh.Available && wh.LockedQty > 0 {
		items = append(items, AlarmItem{
			ID: "stock-locked", Level: "warning", Type: "material",
			Target: "库房", Message: "锁定库存 " + itoa(wh.LockedQty) + " 件待出库", Time: fmtDashboardTime(time.Now()),
			Status: "active",
		})
	}
	if len(items) == 0 {
		items = []AlarmItem{}
	}
	return items
}

func (s *Service) buildTrends(ctx context.Context) []TrendPoint {
	points := make([]TrendPoint, 0, 7)
	for i := 6; i >= 0; i-- {
		d := dayStart(time.Now().AddDate(0, 0, -i))
		next := d.Add(24 * time.Hour)
		done := 0
		if n, err := s.ctx.EntClient.Workpiece.Query().
			Where(workpiece.DoneAtGTE(d), workpiece.DoneAtLT(next)).Count(ctx); err == nil {
			done = n
		}
		ok, ng := 0, 0
		if steps, err := s.ctx.EntClient.WorkpieceProcess.Query().
			Where(workpieceprocess.EndedAtGTE(d), workpieceprocess.EndedAtLT(next)).All(ctx); err == nil {
			for _, st := range steps {
				if strings.EqualFold(st.Result, "NG") {
					ng++
				} else {
					ok++
				}
			}
		}
		points = append(points, TrendPoint{
			Time:          d.Format("01-02"),
			Output:        done,
			QualifiedRate: safeRate(float64(ok), float64(ok+ng)),
		})
	}
	return points
}

// buildEvents 底部实时事件跑马灯：取最近 20 条工序实绩
func (s *Service) buildEvents(ctx context.Context) []EventItem {
	steps, err := s.ctx.EntClient.WorkpieceProcess.Query().
		Where(workpieceprocess.EndedAtNotNil()).
		Order(ent.Desc(workpieceprocess.FieldEndedAt)).Limit(20).All(ctx)
	if err != nil {
		return []EventItem{}
	}
	out := make([]EventItem, 0, len(steps))
	for _, st := range steps {
		level := "info"
		if strings.EqualFold(st.Result, "NG") {
			level = "error"
		}
		name := st.ProcessName
		if name == "" {
			name = "工序" + itoa(st.ProcessCode)
		}
		out = append(out, EventItem{
			Time:  fmtDateTimeHm(orZero(st.EndedAt)),
			Text:  "工位" + st.StationNo + " " + st.Operator + " 完成 " + st.Sn + " " + name + " " + st.Result,
			Level: level,
		})
	}
	return out
}

// ============================================================
// 辅助
// ============================================================

func dayStart(t time.Time) time.Time {
	return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, t.Location())
}

func orZero(t *time.Time) time.Time {
	if t == nil {
		return time.Time{}
	}
	return *t
}

func fmtDateTimeHm(t time.Time) string {
	if t.IsZero() {
		return ""
	}
	return t.Format("15:04")
}

func pad2(n int) string {
	if n < 10 {
		return "0" + itoa(n)
	}
	return itoa(n)
}

func atoiSafe(s string) int {
	n, _ := strconv.Atoi(strings.TrimSpace(s))
	return n
}

func stationDisplayName(name string, no int) string {
	if strings.TrimSpace(name) != "" {
		return name
	}
	return "工位" + itoa(no)
}

func toInt(v any) int {
	switch x := v.(type) {
	case float64:
		return int(x)
	case int:
		return x
	case int64:
		return int(x)
	case string:
		n, _ := strconv.Atoi(x)
		return n
	}
	return 0
}

// rankFromMap 把 map 排行化，按数量降序；prefix 用于生成展示名（如「工位」）
func rankFromMap(m map[string]int, prefix string) []RankItem {
	out := make([]RankItem, 0, len(m))
	for k, v := range m {
		if k == "" {
			continue
		}
		out = append(out, RankItem{Key: k, Label: prefix + k, Count: v, StationNos: []int{}})
	}
	sort.Slice(out, func(i, j int) bool { return out[i].Count > out[j].Count })
	if len(out) > 10 {
		out = out[:10]
	}
	return out
}

// rankOrderStatus 工单排序权重：进行中优先
func rankOrderStatus(status string) int {
	switch strings.ToUpper(status) {
	case "IN_PROGRESS":
		return 0
	case "RELEASED":
		return 1
	case "CREATED":
		return 2
	case "COMPLETED":
		return 3
	default:
		return 4
	}
}

// sumDailyPlanQty 当日排产计划总量（看板「目标产量」）
func (s *Service) sumDailyPlanQty(ctx context.Context, date string) int {
	plans, err := s.ctx.EntClient.DailyPlan.Query().
		Where(dailyplan.PlanDateEQ(date)).All(ctx)
	if err != nil {
		return 0
	}
	sum := 0
	for _, p := range plans {
		sum += p.PlanQty
	}
	return sum
}

// sumDailyPlanQtyByOrder 某工单当日排产计划量
func (s *Service) sumDailyPlanQtyByOrder(ctx context.Context, date, orderNo string) int {
	plans, err := s.ctx.EntClient.DailyPlan.Query().
		Where(dailyplan.PlanDateEQ(date), dailyplan.OrderNoEQ(orderNo)).All(ctx)
	if err != nil {
		return 0
	}
	sum := 0
	for _, p := range plans {
		sum += p.PlanQty
	}
	return sum
}

// countWorkpieceDoneByOrder 某工单当日完工数（日计划达成用）
func (s *Service) countWorkpieceDoneByOrder(ctx context.Context, today time.Time, orderNo string) int {
	n, err := s.ctx.EntClient.Workpiece.Query().
		Where(
			workpiece.OrderNoEQ(orderNo),
			workpiece.DoneAtGTE(today),
			workpiece.DoneAtLT(today.Add(24*time.Hour)),
		).Count(ctx)
	if err != nil {
		return 0
	}
	return n
}

// loadTorqueCriterion 取工艺指标中的扭矩规格（上下限/目标值/单位），用于绘制控制图规格线。
// 取不到时返回 ok=false，前端不画控制线（不臆造规格值）。
func (s *Service) loadTorqueCriterion(ctx context.Context) (lo, hi, target float64, unit string, ok bool) {
	crits, err := s.ctx.EntClient.StepCriterion.Query().All(ctx)
	if err != nil {
		return 0, 0, 0, "", false
	}
	for _, c := range crits {
		if !strings.Contains(c.Name, "扭矩") && !strings.Contains(c.Name, "扭力") {
			continue
		}
		lo, hi = 0, 0
		if c.Min != nil {
			lo = *c.Min
		}
		if c.Max != nil {
			hi = *c.Max
		}
		return lo, hi, c.Target, c.Unit, true
	}
	return 0, 0, 0, "", false
}

// mockAgvProgress 模拟 AGV 任务进度：任务创建后 60 秒线性走完全程。
// 仅用于 3D 动效，接入 RCS 后由真实坐标替换。
func mockAgvProgress(created time.Time) float64 {
	elapsed := time.Since(created).Seconds()
	if elapsed <= 0 {
		return 0
	}
	p := elapsed / 60
	if p > 1 {
		return 1
	}
	return p
}