windowsConfiguration.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "2017.09.01.0",
  "parameters": {
    "provisionVMAgent": {
      "type": "bool",
      "defaultValue": true,
      "metadata": {
        "description": "Indicates whether virtual machine agent should be provisioned on the virtual machine. "
      }
    },
    "winRM": {
      "type": "object",
      "defaultValue": { },
      "metadata": {
        "description": "Specifies the Windows Remote Management listeners. This enables remote Windows PowerShell."
      }
    },
    "additionalUnattendContent": {
      "type": "object",
      "defaultValue": { },
      "metadata": {
        "description": "Specifies additional XML formatted information that can be included in the Unattend.xml file, which is used by Windows Setup."
      }
    },
    "enableAutomaticUpdates": {
      "type": "bool",
      "defaultValue": false,
      "metadata": {
        "description": "Indicates whether virtual machine is enabled for automatic updates."
      }
    },
    "timeZone": {
      "type": "string",
      "metadata": {
        "description": "Specifies the time zone of the virtual machine."
      }
    }
  },
  "variables": {
    "comments": {
      "definition": "https://docs.microsoft.com/en-us/rest/api/compute/virtualmachines/virtualmachines-create-or-update#bk_windowsconfig",
      "baseConfig": "If both winRM and additionalUnattendedContent are empty, then defaults to the first array item.",
      "winRMConfig": "If winRM has data and additionalUnattendedContent is empty, then joins the first array item and second array item.",
      "additionalUnattendedContentConfig": "If additionalUnattendedContent has data and winRM is empty, then joins the first array item and third array item.",
      "fullConfig": "If both winRM and additionalUnattendedContent have data, then join all array items.",
      "windowsConfiguration": "The preceding variables will either have data or be null, coalesce returns the data from the only variable that has anything."
    },
    "windowsConfigurationArray": [
      {
        "provisionVMAgent": "[parameters('provisionVMAgent')]",
        "enableAutomaticUpdates": "[parameters('enableAutomaticUpdates')]",
        "timeZone": "[parameters('timeZone')]"
      },
      {
        "winRM": "[parameters('winRM')]"
      },
      {
        "additionalUnattendContent": "[parameters('additionalUnattendContent')]"
      }
    ],
    "baseConfig": "[if(and(empty(parameters('winRM')),empty(parameters('additionalUnattendContent'))),variables('windowsConfigurationArray')[0],json('null'))]",
    "winRMConfig": "[if(and(not(empty(parameters('winRM'))),empty(parameters('additionalUnattendContent'))),union(variables('windowsConfigurationArray')[0],variables('windowsConfigurationArray')[1]),json('null'))]",
    "additionalUnattendContentConfig": "[if(and(not(empty(parameters('additionalUnattendContent'))),empty(parameters('winRM'))),union(variables('windowsConfigurationArray')[0],variables('windowsConfigurationArray')[2]),json('null'))]",
    "fullConfig": "[if(and(not(empty(parameters('winRM'))),not(empty(parameters('additionalUnattendContent')))),union(variables('windowsConfigurationArray')[0],variables('windowsConfigurationArray')[1],variables('windowsConfigurationArray')[2]),json('null'))]",
    "windowsConfiguration": "[coalesce(variables('baseConfig'),variables('winRMConfig'),variables('additionalUnattendContentConfig'),variables('fullConfig'))]"
  },
  "resources": [
  ],
  "outputs": {
    "windowsConfiguration": {
      "type": "object",
      "value": "[variables('windowsConfiguration')]"
    }
  }
}