weijuesen
69 lines
2.3 KiB
Go
69 lines
2.3 KiB
Go
package service
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import (
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"fmt"
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"strings"
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"silk-server-go/internal/model"
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)
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// WeatherTextRainy 天气现象是否降雨/雷/雪
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func WeatherTextRainy(text string) bool {
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return strings.Contains(text, "雨") || strings.Contains(text, "雷") || strings.Contains(text, "雪")
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}
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// RainDays 预报中降雨天数
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func RainDays(daily []DailyForecast) int {
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n := 0
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for _, d := range daily {
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if WeatherTextRainy(d.TextDay) || WeatherTextRainy(d.TextNight) {
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n++
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}
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}
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return n
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}
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// FungalRisk 白僵病：湿度 ≥80% 且（连续阴雨 ≥2 天 或 当前降雨）
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func FungalRisk(now WeatherNow, daily []DailyForecast) (string, string) {
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if now.Humidity >= 80 && (RainDays(daily) >= 2 || WeatherTextRainy(now.Text)) {
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return "orange", fmt.Sprintf("实时湿度 %.0f%% 且未来 %d 天有降雨（连续阴雨），符合白僵病高发条件（湿度大于80）", now.Humidity, RainDays(daily))
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}
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return "", ""
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}
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// TempSwingRisk 核型多角体病：温度突变（>30℃ 或 <20℃）
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func TempSwingRisk(temp float64) (string, string) {
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if temp > 30 || temp < 20 {
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return "yellow", fmt.Sprintf("实时温度 %.0f℃ 波动剧烈（>30℃ 或 <20℃），易诱发核型多角体病潜伏感染转急性", temp)
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}
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return "", ""
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}
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// SofteningRisk 软化病：湿度 >75%（结合密度/通风可升级）
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func SofteningRisk(now WeatherNow) (string, string) {
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if now.Humidity >= 75 {
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return "yellow", fmt.Sprintf("实时湿度 %.0f%%（大于75），若蚕头密度过大、通风不良易发软化病", now.Humidity)
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}
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return "", ""
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}
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// EvaluateWeatherRules 综合天气规则 → 预警列表（规则取自规格书 3.2.3）
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func EvaluateWeatherRules(now WeatherNow, daily []DailyForecast, stage string) []model.WeatherAlert {
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var alerts []model.WeatherAlert
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if level, reason := FungalRisk(now, daily); level != "" {
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alerts = append(alerts, model.WeatherAlert{Disease: "白僵病", Level: level, Reason: reason})
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}
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if level, reason := TempSwingRisk(now.Temp); level != "" {
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if stage == "late5" {
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level = "orange"
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reason += "；当前为 5 龄后期，风险升级"
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}
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alerts = append(alerts, model.WeatherAlert{Disease: "核型多角体病", Level: level, Reason: reason})
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}
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if level, reason := SofteningRisk(now); level != "" {
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alerts = append(alerts, model.WeatherAlert{Disease: "软化病", Level: level, Reason: reason})
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}
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return alerts
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}
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