weijuesen
50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
package model
|
||
|
||
import (
|
||
"errors"
|
||
"path/filepath"
|
||
"strings"
|
||
)
|
||
|
||
const maxSpectrumSize = 5 << 20 // 5MB
|
||
|
||
// ValidDetectionMethod 检测方式枚举
|
||
func ValidDetectionMethod(method string) bool {
|
||
switch method {
|
||
case "lamp", "qpcr", "sers", "hyperspectral":
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
// JudgeQPCR qPCR Ct 值自动判读：任一 Ct < threshold 判阳性，无 Ct 判阴性
|
||
func JudgeQPCR(cts []float64, threshold float64) (string, string) {
|
||
if threshold <= 0 {
|
||
threshold = 35
|
||
}
|
||
if len(cts) == 0 {
|
||
return "negative", "未检出 Ct 值，判为阴性"
|
||
}
|
||
for _, ct := range cts {
|
||
if ct < threshold {
|
||
return "positive", "存在 Ct 值低于阈值，判为阳性"
|
||
}
|
||
}
|
||
return "negative", "全部 Ct 值不低于阈值，判为阴性"
|
||
}
|
||
|
||
// ValidateSpectrumFile 光谱数据文件校验（csv/txt/json，≤5MB）
|
||
func ValidateSpectrumFile(filename string, size int64) error {
|
||
if size <= 0 || size > maxSpectrumSize {
|
||
return errors.New("光谱文件大小需在 1B~5MB 之间")
|
||
}
|
||
ext := strings.ToLower(filepath.Ext(filename))
|
||
switch ext {
|
||
case ".csv", ".txt", ".json":
|
||
return nil
|
||
default:
|
||
return errors.New("仅支持 csv/txt/json 光谱数据文件")
|
||
}
|
||
}
|