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capability.go
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capability.go
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package go_fritzbox_api
import (
"encoding/json"
"fmt"
"github.com/clbanning/mxj/v2"
"net/http"
"net/url"
"strconv"
)
// Capabilities is a map of all available capabilities.
// They can be access using the Capability-Constants (starting with C, for example CHKR -> HeizungsKörperRegler, etc.)
// HasCapability can be used to check whether a device has a certain capability, without checking the map-keys.
type Capabilities map[string]Capability
type Capability interface {
Name() string
String() string
Device() *SmarthomeDevice
fromJSON(m map[string]json.RawMessage, d *SmarthomeDevice) (Capability, error)
}
func (c Capabilities) String() string {
rt := "["
for _, cp := range c {
if cp != nil {
rt += cp.Name() + ", "
}
}
if len(rt) > 2 {
rt = rt[:len(rt)-2]
}
return rt + "]"
}
func capabilityMapFromString(s string) (m map[string]json.RawMessage, err error) {
// to xml
mv, err := mxj.NewMapXml([]byte(s))
if err != nil {
return
}
// to json
j, err := mv.Json(true)
if err != nil {
return
}
// map
tmp := map[string]json.RawMessage{}
err = json.Unmarshal(j, &tmp)
if err != nil {
return
}
// get rid of parent
err = json.Unmarshal(tmp["device"], &m)
if err != nil {
return
}
return
}
// fromBitmask puts empty capability-structs into the capability map where applicable.
// The bitmask is used to decide which capabilities are available for a device.
func (c Capabilities) fromBitmask(bitmask string) (Capabilities, error) {
var err error
// bitmask to int
bmI, err := strconv.Atoi(bitmask)
if err != nil {
return c, err
}
// int to bit representation in string
bitRepr := strconv.FormatInt(int64(bmI), 2)
// iterate backwards, map capabilities
for i := len(bitRepr) - 1; i >= 0; i-- {
if string(bitRepr[i]) == "1" {
ind := len(bitRepr) - i - 1
var nc Capability
switch MaskTranslStr[ind] {
case CHanfun:
nc = &HanFun{CapName: CHanfun}
// case CLicht
// case CAlarm
case CButton:
nc = &Button{CapName: CButton}
case CHKR:
nc = &Hkr{CapName: CHKR}
// case CEnergieMesser
case CTempSensor:
nc = &Temperature{CapName: CTempSensor}
// case CSteckdose
// case CRepeater
// case CMikrofon
// case CSchaltbar
// case CDimmbar
// case CLampeMitFarbTemp
// case CRollladen
}
c[MaskTranslStr[ind]] = nc
}
}
return c, err
}
func getDeviceInfosFromCapability(c *Client, ca Capability) (Capability, error) {
resp, err := getDeviceInfos(c, ca.Device())
if err != nil {
return ca, err
}
newCapa, err := capabilityMapFromString(resp)
if err != nil {
return ca, err
}
// get & return capability struct
return ca.fromJSON(newCapa, ca.Device())
}
func getDeviceInfos(c *Client, d *SmarthomeDevice) (string, error) {
data := url.Values{
"sid": {c.SID()},
"ain": {d.Identifier},
"switchcmd": {"getdeviceinfos"},
}
// get response
code, resp, err := c.CustomRequest(http.MethodGet, "webservices/homeautoswitch.lua", data)
if err != nil {
return "", err
}
if code != 200 {
return "", fmt.Errorf("unknown error: " + resp)
}
return resp, nil
}
func dectGetter(c *Client, req string, ca Capability) (string, error) {
data := url.Values{
"sid": {c.SID()},
"ain": {ca.Device().Identifier},
"switchcmd": {req},
}
code, resp, err := c.CustomRequest(http.MethodGet, "webservices/homeautoswitch.lua", data)
if err != nil {
return "", err
} else if code != 200 {
return "", fmt.Errorf("unknown error: " + resp)
}
return resp, nil
}