91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
package meter
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import (
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"fmt"
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"net/http"
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"github.com/evcc-io/evcc/api"
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"github.com/evcc-io/evcc/provider"
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"github.com/evcc-io/evcc/util"
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"github.com/evcc-io/evcc/util/request"
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"github.com/thoas/go-funk"
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)
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const discovergyAPI = "https://api.discovergy.com/public/v1"
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func init() {
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registry.Add("discovergy", NewDiscovergyFromConfig)
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}
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type discovergyMeter struct {
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MeterID string `json:"meterId"`
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SerialNumber string `json:"serialNumber"`
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FullSerialNumber string `json:"fullSerialNumber"`
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}
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// NewDiscovergyFromConfig creates a new configurable meter
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func NewDiscovergyFromConfig(other map[string]interface{}) (api.Meter, error) {
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cc := struct {
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User string
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Password string
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Meter string
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Scale float64
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}{
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Scale: 1,
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}
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if err := util.DecodeOther(other, &cc); err != nil {
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return nil, err
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}
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log := util.NewLogger("discgy")
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headers := make(map[string]string)
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if err := provider.AuthHeaders(log, provider.Auth{
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Type: "Basic",
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User: cc.User,
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Password: cc.Password,
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}, headers); err != nil {
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return nil, err
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}
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req, err := request.New(http.MethodGet, fmt.Sprintf("%s/meters", discovergyAPI), nil, headers)
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if err != nil {
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return nil, err
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}
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var meters []discovergyMeter
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if err := request.NewHelper(log).DoJSON(req, &meters); err != nil {
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return nil, err
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}
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var meterID string
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if cc.Meter != "" {
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for _, m := range meters {
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if matchesIdentifier(cc.Meter, m) {
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meterID = m.MeterID
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break
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}
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}
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} else if len(meters) == 1 {
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meterID = meters[0].MeterID
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}
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if meterID == "" {
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return nil, fmt.Errorf("could not determine meter id: %v", funk.Map(meters, func(m discovergyMeter) string {
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return m.FullSerialNumber
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}))
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}
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uri := fmt.Sprintf("%s/last_reading?meterId=%s", discovergyAPI, meterID)
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power, err := provider.NewHTTP(log, http.MethodGet, uri, headers, "", false, "", ".values.power", 0.001*cc.Scale)
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if err != nil {
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return nil, err
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}
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return NewConfigurable(power.FloatGetter())
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}
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func matchesIdentifier(id string, m discovergyMeter) bool {
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return id == m.MeterID || id == m.SerialNumber || id == m.FullSerialNumber
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}
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