mirror of
https://github.com/Luzifer/tasmota-config.git
synced 2024-12-22 18:51:21 +00:00
92 lines
2.6 KiB
Go
92 lines
2.6 KiB
Go
package main
|
|
|
|
import (
|
|
"encoding/json"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
type settingExtractor func([]byte) (interface{}, error)
|
|
|
|
var extractors = map[string]settingExtractor{
|
|
"currentcal": func(p []byte) (interface{}, error) { return extractFloatToInt("CurrentCal", p) },
|
|
"devicename": func(p []byte) (interface{}, error) { return extractGenericJSONValue("DeviceName", p) },
|
|
"ledstate": func(p []byte) (interface{}, error) { return extractFloatToInt("LedState", p) },
|
|
"module": extractModule,
|
|
"otaurl": func(p []byte) (interface{}, error) { return extractGenericJSONValue("OtaUrl", p) },
|
|
"powercal": func(p []byte) (interface{}, error) { return extractFloatToInt("PowerCal", p) },
|
|
"teleperiod": func(p []byte) (interface{}, error) { return extractFloatToInt("TelePeriod", p) },
|
|
"timezone": func(p []byte) (interface{}, error) { return extractGenericJSONValue("Timezone", p) },
|
|
"topic": func(p []byte) (interface{}, error) { return extractGenericJSONValue("Topic", p) },
|
|
"voltagecal": func(p []byte) (interface{}, error) { return extractFloatToInt("VoltageCal", p) },
|
|
}
|
|
|
|
func extractSettingValue(setting string, payloadChan chan []byte) (interface{}, error) {
|
|
e, ok := extractors[strings.ToLower(setting)]
|
|
if !ok {
|
|
// Default extractor: Full value
|
|
e = func(in []byte) (interface{}, error) { return string(in), nil }
|
|
}
|
|
|
|
var deadline = time.NewTimer(cfg.MQTTCommandTimeout)
|
|
for {
|
|
select {
|
|
|
|
case payload := <-payloadChan:
|
|
return e(payload)
|
|
|
|
case <-deadline.C:
|
|
return nil, errors.New("Read timed out")
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
func extractGenericJSONValue(setting string, payload []byte) (interface{}, error) {
|
|
var data = map[string]interface{}{}
|
|
if err := json.Unmarshal(payload, &data); err != nil {
|
|
return nil, errors.Wrap(err, "Unable to map payload into map[string]interface{}")
|
|
}
|
|
|
|
if _, ok := data[setting]; !ok {
|
|
return nil, errors.New("Unable to find requested value")
|
|
}
|
|
|
|
return data[setting], nil
|
|
}
|
|
|
|
func extractFloatToInt(setting string, payload []byte) (interface{}, error) {
|
|
v, err := extractGenericJSONValue(setting, payload)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if _, ok := v.(float64); !ok {
|
|
return nil, errors.Errorf("Expected float value, got %T in %s", v, setting)
|
|
}
|
|
|
|
return int(v.(float64)), nil
|
|
}
|
|
|
|
func extractModule(payload []byte) (interface{}, error) {
|
|
var v = &struct {
|
|
Module map[string]string `json:"Module"`
|
|
}{}
|
|
if err := json.Unmarshal(payload, v); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var values []string
|
|
for k := range v.Module {
|
|
values = append(values, k)
|
|
}
|
|
|
|
if len(values) != 1 {
|
|
return nil, errors.New("Unexpected number of module definitions found")
|
|
}
|
|
|
|
return strconv.Atoi(values[0])
|
|
}
|