Settings Service

// Get country information
    var request = webOS.service.request('luna://com.webos.settingsservice', {
      method: 'getSystemSettings',
      parameters: {
        category: 'option',
        keys: ['country', 'smartServiceCountryCode2'],
      },
      onSuccess: function (inResponse) {
        console.log('Result: ' + JSON.stringify(inResponse));
        // To-Do something
      },
      onFailure: function (inError) {
        console.log("Failed to get settings' value");
        console.log('[' + inError.errorCode + ']: ' + inError.errorText);
        // To-Do something
        return;
      },
    });
    
    // Get locale information with subscription
    var subscriptionHandle;
    
    subscriptionHandle = webOS.service.request('luna://com.webos.settingsservice', {
      method: 'getSystemSettings',
      parameters: {
        keys: ['localeInfo'],
        subscribe: true,
      },
      onSuccess: function (inResponse) {
        if (typeof inResponse.subscribed != 'undefined') {
          if (!inResponse.subscribed) {
            console.log("Failed to subscribe settings' value");
            return;
          }
        }
    
        console.log('Result: ' + JSON.stringify(inResponse));
        // To-Do something
      },
      onFailure: function (inError) {
        console.log("Failed to get settings' value");
        console.log('[' + inError.errorCode + ']: ' + inError.errorText);
        // To-Do something
        return;
      },
    });
    ...
    
    // Get audio guidance information
    var audioGuidanceRequest = webOS.service.request(
      'luna://com.webos.settingsservice',
      {
        method: 'getSystemSettings',
        parameters: {
          category: 'option',
          keys: ['audioGuidance'],
        },
        onSuccess: function (inResponse) {
          console.log('Result: ' + JSON.stringify(inResponse));
          // To-Do something
        },
        onFailure: function (inError) {
          console.log("Failed to get settings' value");
          console.log('[' + inError.errorCode + ']: ' + inError.errorText);
          // To-Do something
          return;
        },
      }
    );
    
    // Get caption information
    var captionRequest = webOS.service.request('luna://com.webos.settingsservice', {
      method: 'getSystemSettings',
      parameters: {
        category: 'caption',
        keys: ['captionEnable'],
      },
      onSuccess: function (inResponse) {
        console.log('Result: ' + JSON.stringify(inResponse));
        // To-Do something
      },
      onFailure: function (inError) {
        console.log("Failed to get settings' value");
        console.log('[' + inError.errorCode + ']: ' + inError.errorText);
        // To-Do something
        return;
      },
    });
    
    // If you need to unsubscribe the data, use cancel() method as below
    subscriptionHandle.cancel();
    

// Success return - country information
{
    "category": "option",
    "method": "getSystemSettings",
    "settings": {
        "smartServiceCountryCode2": "GB",
        "country": "FRA"
    },
    "returnValue": true
}

// Success return - locale information
{
    "method": "getSystemSettings",
    "settings": {
        "localeInfo": {
            "locales": {
                "UI": "en-GB",
                "TV": "en-GB",
                "FMT": "en-GB",
                "NLP": "en-GB",
                "STT": "fr-FR",
                "AUD": "fr-FR",
                "AUD2": "en-GB"
            },
            "clock": "locale",
            "keyboards": [
                "en"
            ],
            "timezone": "
        }
    },
    "returnValue": true
}

// Success return - audio guidance information
{
    "subscribed": false,
    "category": "option",
    "method": "getSystemSettings",
    "settings": {
        "audioGuidance": "off"
    },
    "returnValue": true
}

// Success return - caption information
{
    "subscribed": false,
    "category": "caption",
    "method": "getSystemSettings",
    "settings": {
        "captionEnable": "off"
    },
    "returnValue": true
}

// Failure return
    {
    "method": "getSystemSettings",
    "returnValue": false,
    "errorText": "There is no matched result from DB"
}

{
    "localeInfo": object,
    "smartServiceCountryCode2": String,
    "country": String,
    "audioGuidance": String,
    "captionEnable": String
    } 

{
    "locales": {
        "UI": String,
        "TV": String,
        "FMT": String,
        "NLP": String,
        "STT": String,
        "AUD": String,
        "AUD2": String
    },
    "clock": String,
    "keyboards": String array,
    "timezone": String
    }