{
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "peer": {
           "type": "bool",
           "defaultValue": true,
           "metadata": {
                "description": "Boolean to control whether spoke is peered to the hub"
            }
        },
        "hub": {
            "type": "object",
            "defaultValue": {
                "resourceGroup": "westeurope",
                "vnet": {
                    "name": "hub"
                }
            },
            "metadata": {
                "description": "Object containing required information for the hub vNet.  See defaultValue for minimum expected structure."
            }
        },
        "spoke": {
            "type": "object",
            "defaultValue": {
                "vnet": {
                    "name": "Example-vnet",
                    "addressPrefixes": [
                        "10.1.0.0/16"
                    ]
                },
                "subnets": [
                    {
                        "addressPrefix": "10.1.1.0/24",
                        "name": "Example-vnet-subnet1"
                    },
                    {
                        "addressPrefix": "10.1.2.0/24",
                        "name": "Example-vnet-subnet2"
                    }
                ]
            },
            "metadata": {
                "description": "Object containing information for the spoke vNet.  See defaultValue for expected structure."
            }
        }
    },
    "resources": [
        {
            "name": "[concat(parameters('spoke').vnet.name)]",
            "type": "Microsoft.Network/virtualNetworks",
            "apiVersion": "2017-10-01",
            "location": "[resourceGroup().location]",
            "properties": {
                "addressSpace": {
                    "addressPrefixes": "[parameters('spoke').vnet.addressPrefixes]"
                },
                "copy": [
                    {
                        "name": "subnets",
                        "count": "[length(parameters('spoke').subnets)]",
                        "input": {
                            "name": "[parameters('spoke').subnets[copyIndex('subnets')].name]",
                            "properties": {
                                "addressPrefix": "[parameters('spoke').subnets[copyIndex('subnets')].addressPrefix]"
                            }
                        }
                    }
                ]
            }
        },
        {
            "comments": "Optional vnet to hub peering",
            "condition": "[parameters('peer')]",
            "name": "[concat(parameters('spoke').vnet.name, '/to-', parameters('hub').vnet.name)]",
            "type": "Microsoft.Network/virtualNetworks/virtualNetworkPeerings",
            "apiVersion": "2017-10-01",
            "location": "[resourceGroup().location]",
            "properties": {
                "allowVirtualNetworkAccess": true,
                "allowForwardedTraffic": false,
                "allowGatewayTransit": false,
                "useRemoteGateways": false,
                "remoteVirtualNetwork": {
                    "id": "[resourceId(parameters('hub').resourceGroup,'Microsoft.Network/virtualNetworks/', parameters('hub').vnet.name)]"
                }
            },
            "dependsOn": [
                "[concat(parameters('spoke').vnet.name)]"
            ]
        },
        {
            "comments": "Inline deployment for reverse peering",
            "condition": "[parameters('peer')]",
            "name": "[concat('DeployVnetPeering-', parameters('hub').vnet.name, '-to-', parameters('spoke').vnet.name)]",
            "type": "Microsoft.Resources/deployments",
            "apiVersion": "2017-05-10",
            "resourceGroup": "[parameters('hub').resourceGroup]",
            "properties": {
                "mode": "Incremental",
                "template": {
                    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
                    "contentVersion": "1.0.0.0",
                    "resources": [
                        {
                            "apiVersion": "2017-10-01",
                            "type": "Microsoft.Network/virtualNetworks/virtualNetworkPeerings",
                            "name": "[concat(parameters('hub').vnet.name, '/to-', parameters('spoke').vnet.name)]",
                            "location": "[resourceGroup().location]",
                            "properties": {
                                "allowVirtualNetworkAccess": true,
                                "allowForwardedTraffic": false,
                                "allowGatewayTransit": true,
                                "useRemoteGateways": false,
                                "remoteVirtualNetwork": {
                                    "id": "[resourceId(resourceGroup().name, 'Microsoft.Network/virtualNetworks/', parameters('spoke').vnet.name)]"
                                }
                            }
                        }
                    ]
                }
            },
            "dependsOn": [
                "[concat(parameters('spoke').vnet.name)]"
            ]
        }
    ]
}