43 lines
1.2 KiB
Go
43 lines
1.2 KiB
Go
package onboarding
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import (
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"encoding/json"
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"reflect"
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"strings"
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)
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// Device tables define every request field as required, including zero-valued
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// counters. Go's JSON decoder alone cannot distinguish zero from omission.
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func decodeDeviceCall[T any](raw []byte, fn func(T) (map[string]any, error)) (map[string]any, error) {
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var in T
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if err := StrictJSON(raw, &in); err != nil {
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return nil, err
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}
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var fields map[string]json.RawMessage
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if err := json.Unmarshal(raw, &fields); err != nil {
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return nil, err
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}
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v := reflect.ValueOf(in)
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for i := 0; i < v.NumField(); i++ {
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name := strings.Split(v.Type().Field(i).Tag.Get("json"), ",")[0]
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if name == "-" || name == "" {
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continue
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}
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value, present := fields[name]
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if !present || string(value) == "null" {
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return nil, fail(400, "VALIDATION_FAILED", "缺少必填字段："+name)
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}
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if v.Field(i).Kind() == reflect.Int64 || v.Field(i).Kind() == reflect.Int {
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n := v.Field(i).Int()
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minimum := int64(0)
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if name == "sdk_result" {
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minimum = -2147483648
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}
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if n < minimum || n > 2147483647 {
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return nil, fail(400, "VALIDATION_FAILED", "整数超出范围："+name)
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}
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}
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}
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return fn(in)
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}
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