feat(server-go): 疫病溯源三级模型与接口（#21，一级自动溯源/二级清单/三级备注）

2026-08-12 23:12:25 +08:00
parent 97087f51af
commit dc97d1cf56
7 changed files with 576 additions and 0 deletions
@@ -0,0 +1,184 @@
+package service
+
+import (
+	"fmt"
+	"time"
+)
+
+// EnvSample 环境回溯样本
+type EnvSample struct {
+	Time     time.Time
+	Temp     *float64
+	Humidity *float64
+}
+
+// EnvironmentResult 环境回溯结果
+type EnvironmentResult struct {
+	HighHumidity bool
+	TempSwing    bool
+	Summary      string
+}
+
+// EnvironmentBacktrack 发病前环境回溯：湿度≥阈值 或 温度>30/<20 触发（规格书 3.8.3）
+func EnvironmentBacktrack(samples []EnvSample, humidityThreshold float64) EnvironmentResult {
+	r := EnvironmentResult{}
+	if len(samples) == 0 {
+		r.Summary = "无可用环境遥测数据"
+		return r
+	}
+	for _, s := range samples {
+		if s.Humidity != nil && *s.Humidity >= humidityThreshold {
+			r.HighHumidity = true
+		}
+		if s.Temp != nil && (*s.Temp > 30 || *s.Temp < 20) {
+			r.TempSwing = true
+		}
+	}
+	switch {
+	case r.HighHumidity && r.TempSwing:
+		r.Summary = "发病前环境存在持续高湿与温度突变，符合真菌病与核型多角体病诱发条件"
+	case r.HighHumidity:
+		r.Summary = fmt.Sprintf("发病前环境湿度 ≥%.0f%%，符合高湿诱病条件", humidityThreshold)
+	case r.TempSwing:
+		r.Summary = "发病前环境温度突变（>30℃ 或 <20℃），易诱发潜伏感染转急性"
+	default:
+		r.Summary = "发病前环境温湿度未见明显异常"
+	}
+	return r
+}
+
+// PastEvent 历史发病事件
+type PastEvent struct {
+	Disease string
+	DaysAgo int
+}
+
+// HistoryAssociation 历史发病关联：同房间/同病种既往 90 天内有发病 → 连发性
+func HistoryAssociation(past []PastEvent, disease string) bool {
+	for _, e := range past {
+		if e.Disease == disease && e.DaysAgo <= 90 {
+			return true
+		}
+	}
+	return false
+}
+
+// TransmissionInference 按病种推断传播途径（规格书 3.8.2）
+func TransmissionInference(disease string) (mode, source string) {
+	switch disease {
+	case "核型多角体病":
+		return "食下传染为主，创伤传染次之", "多角体污染蚕座/桑叶/蚕具，环境残留或新引入"
+	case "白僵病", "其他真菌病（绿僵病/黄僵病/曲霉病）":
+		return "接触传染/气流扩散", "分生孢子经气流带入，或蚕房尸体产孢内源扩散"
+	case "软化病", "浓核病/传染性软化病":
+		return "食下传染", "桑园害虫粪便污染桑叶，或蚕座环境累积污染"
+	case "微粒子病":
+		return "食下传染+胚种传染", "蚕种带毒（垂直传播）或环境孢子水平传播"
+	case "细菌性败血病":
+		return "创伤传染", "蚕具刮伤/互相抓伤后环境细菌侵入"
+	case "猝倒病":
+		return "食下传染（细菌毒素）", "桑叶被细菌污染"
+	default:
+		return "未知", "病种不明，建议先确认病原"
+	}
+}
+
+// ChecklistItem 排查清单项
+type ChecklistItem struct {
+	Key          string `json:"key"`
+	Label        string `json:"label"`
+	InternalBias bool   `json:"internalBias"`
+}
+
+// DiseaseChecklist 分病种二级排查清单（规格书 3.8.3）
+func DiseaseChecklist(disease string) []ChecklistItem {
+	switch disease {
+	case "核型多角体病":
+		return []ChecklistItem{
+			{Key: "disinfect", Label: "上批次是否发生过同种病？消毒是否彻底（含蚕具浸泡）？", InternalBias: true},
+			{Key: "tray_share", Label: "蚕具是否跨批次共用？", InternalBias: true},
+			{Key: "mulberry", Label: "桑叶来源是否变更？", InternalBias: false},
+			{Key: "entry", Label: "近期人员进出/蚕具借用记录是否有异常？", InternalBias: false},
+		}
+	case "白僵病":
+		return []ChecklistItem{
+			{Key: "vent", Label: "近期是否连续阴雨且通风不足？", InternalBias: true},
+			{Key: "corpse", Label: "蚕房附近是否堆放蚕沙或病蚕尸体？", InternalBias: true},
+			{Key: "outdoor", Label: "蚕房周边桑园昆虫是否有白僵病死亡个体？", InternalBias: false},
+			{Key: "filter", Label: "通风口是否有过滤防虫措施？", InternalBias: false},
+		}
+	case "微粒子病":
+		return []ChecklistItem{
+			{Key: "seed", Label: "蚕种来源批次与供应商是否可追溯？", InternalBias: true},
+			{Key: "quarantine", Label: "检疫证明与母蛾镜检结果是否齐全？", InternalBias: true},
+			{Key: "wild", Label: "桑园周边野外昆虫是否有微孢子虫？", InternalBias: false},
+			{Key: "cross", Label: "同批次蚕种在其他蚕房是否发病？", InternalBias: false},
+		}
+	case "软化病", "浓核病/传染性软化病":
+		return []ChecklistItem{
+			{Key: "density", Label: "蚕头密度是否过大？", InternalBias: true},
+			{Key: "vent", Label: "通风是否不良？", InternalBias: true},
+			{Key: "mulberry", Label: "桑叶是否潮湿或储运不达标？", InternalBias: true},
+			{Key: "pest", Label: "桑园近期害虫防治记录是否正常？", InternalBias: false},
+		}
+	case "细菌性败血病":
+		return []ChecklistItem{
+			{Key: "tool", Label: "蚕具是否有尖锐边缘/毛刺？", InternalBias: true},
+			{Key: "density", Label: "蚕头密度是否超标导致相互抓伤？", InternalBias: true},
+			{Key: "op", Label: "给桑操作是否粗暴？", InternalBias: true},
+			{Key: "disinfect", Label: "消毒是否有盲区？", InternalBias: true},
+		}
+	default:
+		return nil
+	}
+}
+
+// ChecklistAnswer 清单作答
+type ChecklistAnswer struct {
+	Key          string `json:"key"`
+	Label        string `json:"label"`
+	Answer       string `json:"answer"` // yes/no/unknown
+	InternalBias bool   `json:"internalBias"`
+}
+
+// AnalyzeChecklist 按作答统计内源/外源倾向并给出结论
+func AnalyzeChecklist(answers []ChecklistAnswer) (origin string, confidence float64, conclusion string) {
+	internal, external, unknown := 0, 0, 0
+	for _, a := range answers {
+		switch a.Answer {
+		case "yes":
+			if a.InternalBias {
+				internal++
+			} else {
+				external++
+			}
+		case "no":
+			if a.InternalBias {
+				external++
+			} else {
+				internal++
+			}
+		default:
+			unknown++
+		}
+	}
+	total := internal + external + unknown
+	if total == 0 {
+		return "unknown", 0, "未填写排查清单，无法判定来源"
+	}
+	switch {
+	case internal > external:
+		origin = "internal"
+		confidence = 0.5 + 0.3*float64(internal)/float64(total)
+		conclusion = "倾向内源扩散（环境残留/蚕座污染），建议定向清除环境残留并升级消毒"
+	case external > internal:
+		origin = "external"
+		confidence = 0.5 + 0.3*float64(external)/float64(total)
+		conclusion = "倾向外源侵入（桑叶/气流/种源），建议封堵外部侵入途径"
+	default:
+		origin = "unknown"
+		confidence = 0.5
+		conclusion = "内源与外源线索相当，建议结合专家会诊进一步确认"
+	}
+	return origin, confidence, conclusion
+}