Husqvarna lawn robot mover API

[pioneersteffen]

Hi @all,

I want to connect my Husqvarna lawn robot to LM. 

There is an existing API which is documented here: https://developer.husqvarnagroup.cloud/a...onnect-api

I think I'm not fare away from the goal to start and stop the robot via LM but I struggling with the payload. 

After I registrated to Husqvarna development portal I created a script to find out the mover-id:

Code:

local https = require('ssl.https')
local json = require('json')

-- Husqvarna Authentication API
local authEndpoint = 'https://api.authentication.husqvarnagroup.dev/v1/oauth2/token'
local clientId = 'XXX'
local clientSecret = 'XXX

-- Husqvarna Automower Connect API
local mowersEndpoint = 'https://api.amc.husqvarna.dev/v1/mowers'

local accessToken

-- Funktion zum Erhalten eines Zugriffstokens
function getAccessToken()
    local requestBody = 'grant_type=client_credentials'
        .. '&client_id=' .. clientId
        .. '&client_secret=' .. clientSecret

    local response_body = {}
    local _, code, _, _ = https.request{
        url = authEndpoint,
        method = 'POST',
        headers = {
            ['Content-Type'] = 'application/x-www-form-urlencoded',
            ['Content-Length'] = #requestBody
        },
        source = ltn12.source.string(requestBody),
        sink = ltn12.sink.table(response_body)
    }
log (code, status, headers, response_body)


    if code == 200 then
        local response = table.concat(response_body)
        local jsonResponse = json.decode(response)
        accessToken = jsonResponse.access_token
    else
        -- Fehlerbehandlung
        print('Fehler beim Abrufen des Zugriffstokens:', code)
    end
end

-- Funktion zum Abrufen der Mower-IDs
function getMowerIds()
    local response_body = {}
    local _, code, _, _ = https.request{
        url = mowersEndpoint,
        method = 'GET',
        headers = {
            ['Authorization'] = 'Bearer ' .. accessToken,
            ['X-Api-Key'] = clientId,
            ['Authorization-Provider'] = 'husqvarna'
        },
        sink = ltn12.sink.table(response_body)
    }
log (code, status, headers, response_body)



    if code == 200 then
        local response = table.concat(response_body)
    log(response)
        local jsonResponse = json.decode(response)
       
        for _, mower in ipairs(jsonResponse.data) do
            local mowerId = mower.id
            -- Verarbeiten Sie die Mower-ID hier nach Bedarf
            print('Mower-ID:', mowerId)
           
        log(mowerId)
        end
    else
        -- Fehlerbehandlung
        print('Fehler beim Abrufen der Mower-IDs:', code)
    end
end

-- Beispielaufrufe
getAccessToken()
getMowerIds()

In the second step I tried to write a script to start and stop the robot:

Code:

local https = require('ssl.https')
local json = require('json')

-- Husqvarna Authentication API
local authEndpoint = 'https://api.authentication.husqvarnagroup.dev/v1/oauth2/token'
local clientId = 'xxx
local clientSecret = 'xxx'
local moverID = 'xxx'

-- Husqvarna Automower Connect API
local connectEndpoint = 'https://api.amc.husqvarna.dev/v1/mowers/ba15739b-0449-411a-9eb9-9ad866362075/actions'
local accessToken

-- Funktion zum Erhalten eines Zugriffstokens
function getAccessToken()
    local requestBody = 'grant_type=client_credentials'
        .. '&client_id=' .. clientId
        .. '&client_secret=' .. clientSecret

    local response_body = {}
    local _, code, _, _ = https.request{
        url = authEndpoint,
        method = 'POST',
        headers = {
            ['Content-Type'] = 'application/x-www-form-urlencoded',
            ['Content-Length'] = #requestBody
        },
        source = ltn12.source.string(requestBody),
        sink = ltn12.sink.table(response_body)
    }

    if code == 200 then
        local response = table.concat(response_body)
        local jsonResponse = json.decode(response)
        accessToken = jsonResponse.access_token
    else
        -- Fehlerbehandlung
        log('Fehler beim Abrufen des Zugriffstokens:', code)
    end
end

-- Funktion zum Senden des Startbefehls
function sendStartCommand()
    local requestBody = '{"action":"start"}'

    local response_body = {}
    local _, code, _, _ = https.request{
        url = connectEndpoint,
        method = 'POST',
        headers = {
            ['Authorization'] = 'Bearer ' .. accessToken,
            ['X-Api-Key'] = clientId,
            ['Authorization-Provider'] = 'husqvarna',
            ['Content-Type'] = 'application/json',
            ['Content-Length'] = #requestBody
        },
        source = ltn12.source.string(requestBody),
        sink = ltn12.sink.table(response_body)
    }
   
log (code, status, headers, response_body)



    if code == 200 then
        -- Erfolgreich gestartet
        log('Automower wurde gestartet.')
    else
        -- Fehlerbehandlung
        log('Fehler beim Starten des Automowers:', code)
    end
end

-- Funktion zum Senden des Stopbefehls
function sendStopCommand()
    local requestBody = '{"name": "stop"}'

    local response_body = {}
    local _, code, _, _ = https.request{
        url = connectEndpoint,
        method = 'POST',
        headers = {
            ['Authorization'] = 'Bearer ' .. accessToken,
            ['X-Api-Key'] = clientId,
            ['Authorization-Provider'] = 'husqvarna',
            ['Content-Type'] = 'application/json',
            ['Content-Length'] = #requestBody
        },
        source = ltn12.source.string(requestBody),
        sink = ltn12.sink.table(response_body)
    }
    log (code, status, headers, response_body)



    if code == 200 then
        -- Erfolgreich gestoppt
        log('Automower wurde gestoppt.')
    else
        -- Fehlerbehandlung
        log('Fehler beim Stoppen des Automowers:', code)
    end
end

-- Beispielaufrufe
getAccessToken()
sendStartCommand()

If I call the script to start the robot I getting the following failures:

Code:

Automover  10.06.2023 15:12:33
* arg: 1
  * number: 400
* arg: 2
  * nil
* arg: 3
  * nil
* arg: 4
  * table:
   [1]
    * string: {"errors":[{"id":"f211fb25-ae93-44e7-820f-ccb35adb2484","status":"400","code":"illegal.argument","title":"Illegal argument","detail":"Unsupported Media Type. Likely an invalid Content-Type header value. Use 'application/vnd.api+json' or 'application/json' depending on endpoint."}]}
Automover  10.06.2023 15:12:33
* arg: 1
  * string: Fehler beim Starten des Automowers:
* arg: 2
  * number: 400

Do you have any idea what I making wrong and need to change? 

Many thanks for your help!

Best Regards
Steffen