153 lines
3.4 KiB
Go
153 lines
3.4 KiB
Go
package aha
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import (
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"errors"
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"fmt"
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"net/url"
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"strconv"
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"strings"
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"github.com/evcc-io/evcc/api"
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"github.com/evcc-io/evcc/meter/fritz"
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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/evcc-io/evcc/util/transport"
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)
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// FRITZ! FritzBox AHA interface and authentication specifications:
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// https://fritz.com/fileadmin/user_upload/Global/Service/Schnittstellen/AHA-HTTP-Interface.pdf
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// https://fritz.com/fileadmin/user_upload/Global/Service/Schnittstellen/AVM_Technical_Note_-_Session_ID.pdf
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// FritzDECT connection
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type Connection struct {
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*request.Helper
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*fritz.Settings
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}
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// NewConnection creates FritzDECT connection
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func NewConnection(uri, ain, user, password string) (*Connection, error) {
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if uri == "" {
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uri = "https://fritz.box"
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}
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if ain == "" {
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return nil, errors.New("missing ain")
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}
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settings := &fritz.Settings{
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URI: strings.TrimRight(uri, "/"),
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AIN: ain,
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User: user,
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Password: password,
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}
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log := util.NewLogger("fritzdect").Redact(password)
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fritzdect := &Connection{
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Helper: request.NewHelper(log),
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Settings: settings,
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}
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fritzdect.Client.Transport = request.NewTripper(log, transport.Insecure())
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return fritzdect, nil
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}
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// ExecCmd execautes an FritzDECT AHA-HTTP-Interface command
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func (c *Connection) ExecCmd(function string) (string, error) {
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sid, err := c.GetSessionID(c.Helper)
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if err != nil {
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return "", err
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}
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parameters := url.Values{
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"sid": {sid},
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"ain": {c.AIN},
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"switchcmd": {function},
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}
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uri := fmt.Sprintf("%s/webservices/homeautoswitch.lua", c.URI)
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body, err := c.GetBody(uri + "?" + parameters.Encode())
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res := strings.TrimSpace(string(body))
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if err == nil && res == "inval" {
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err = api.ErrNotAvailable
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}
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return res, err
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}
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// CurrentPower implements the api.Meter interface
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func (c *Connection) CurrentPower() (float64, error) {
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// power value in 0,001 W (current switch power, refresh approximately every 2 minutes)
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resp, err := c.ExecCmd("getswitchpower")
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if err != nil {
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return 0, err
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}
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power, err := strconv.ParseFloat(resp, 64)
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return power / 1000, err // mW ==> W
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}
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var _ api.MeterEnergy = (*Connection)(nil)
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// TotalEnergy implements the api.MeterEnergy interface
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func (c *Connection) TotalEnergy() (float64, error) {
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// Energy value in Wh (total switch energy, refresh approximately every 2 minutes)
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resp, err := c.ExecCmd("getswitchenergy")
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if err != nil {
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return 0, err
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}
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energy, err := strconv.ParseFloat(resp, 64)
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return energy / 1000, err // Wh ==> KWh
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}
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// SwitchPresent checks if the device is connected
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func (c *Connection) SwitchPresent() (bool, error) {
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resp, err := c.ExecCmd("getswitchpresent")
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if err != nil {
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return false, err
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}
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return strconv.ParseBool(resp)
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}
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// SwitchState returns the current switch state
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func (c *Connection) SwitchState() (bool, error) {
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resp, err := c.ExecCmd("getswitchstate")
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if err != nil {
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return false, err
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}
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return strconv.ParseBool(resp)
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}
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// SwitchOn turns the switch on
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func (c *Connection) SwitchOn() error {
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resp, err := c.ExecCmd("setswitchon")
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if err != nil {
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return err
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}
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on, err := strconv.ParseBool(resp)
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if err == nil && !on {
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err = errors.New("switch on failed")
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}
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return err
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}
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// SwitchOff turns the switch off
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func (c *Connection) SwitchOff() error {
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resp, err := c.ExecCmd("setswitchoff")
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if err != nil {
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return err
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}
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off, err := strconv.ParseBool(resp)
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if err == nil && off {
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err = errors.New("switch off failed")
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}
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return err
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}
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