#Get Exiting Vnet
$vnet = Get-AzVirtualNetwork -ResourceGroupName Devmanh_RG -Name Devmanh_VNet

#Get existing subnet
$subnet=$vnet.Subnets[0]

#create new Public IP
$pip = New-AzPublicIpAddress -ResourceGroupName Devmanh_RG -Location southeastasia -Name Devmanh_AG_PIPAddress -AllocationMethod Dynamic

#Get public IP for AG
$pip = Get-AzPublicIpAddress -ResourceGroupName Devmanh_RG -Name Devmanh_AG_PIPAddress

#Create Application Gateway IP configuration 
$gipconfig = New-AzApplicationGatewayIPConfiguration -Name Devmanh_AG_IPConfig -Subnet $subnet

#Create new AG frontend IP config
$fipconfig = New-AzApplicationGatewayFrontendIPConfig -Name Devmanh_AG_FrontendIPConfig -PublicIPAddress $pip

#create new front end port
$frontendport = New-AzApplicationGatewayFrontendPort -Name Devmanh_AG_FrontendPort -Port 80

#Create Default Backendpool
$defaultPool = New-AzApplicationGatewayBackendAddressPool -Name appGatewayBackendPool

#Create Default Httpsetting for backendpool
$poolSettings = New-AzApplicationGatewayBackendHttpSettings -Name Devmanh_PoolSettings -Port 80 -Protocol Http -CookieBasedAffinity Enabled -RequestTimeout 120

#Create default Listener
$defaultlistener = New-AzApplicationGatewayHttpListener -Name Devmanh_DefaultListener -Protocol Http -FrontendIPConfiguration $fipconfig -FrontendPort $frontendport

#Create default rule for default Listener
$frontendRule = New-AzApplicationGatewayRequestRoutingRule -Name Devmanh_rule1 -RuleType Basic -HttpListener $defaultlistener -BackendAddressPool $defaultPool -BackendHttpSettings $poolSettings

#Create SKU
$sku = New-AzApplicationGatewaySku -Name Standard_Medium -Tier Standard -Capacity 2


#Create New Application Gateway
$appgw = New-AzApplicationGateway -Name Devmanh_AppGateway -ResourceGroupName Devmanh_RG -Location southeastasia -BackendAddressPools $defaultPool `
  -BackendHttpSettingsCollection $poolSettings `
  -FrontendIpConfigurations $fipconfig `
  -GatewayIpConfigurations $gipconfig `
  -FrontendPorts $frontendport `
  -HttpListeners $defaultlistener `
  -RequestRoutingRules $frontendRule `
  -Sku $sku
  
  
#####Add image and video backend pools and port#####

#Get existing application Gateway
$appgw = Get-AzApplicationGateway -ResourceGroupName Devmanh_RG -Name Devmanh_AppGateway

#Add two new Backend pool to exiting Application Gateway
Add-AzApplicationGatewayBackendAddressPool -ApplicationGateway $appgw -Name Devmanh_imagesBackendPool

Add-AzApplicationGatewayBackendAddressPool -ApplicationGateway $appgw -Name Devmanh_videoBackendPool

#Adds a front-end port to an application gateway.
Add-AzApplicationGatewayFrontendPort -ApplicationGateway $appgw -Name Devmanh_backEndport -Port 8080

Set-AzApplicationGateway -ApplicationGateway $appgw


##########Add backend listener#####################

#Get Exiting AG
$appgw = Get-AzApplicationGateway `
  -ResourceGroupName myResourceGroupAG `
  -Name Devmanh_AppGateway

$backendPort = Get-AzApplicationGatewayFrontendPort -ApplicationGateway $appgw -Name Devmanh_backEndport

#Get Exiting frontend IP
$fipconfig = Get-AzApplicationGatewayFrontendIPConfig -ApplicationGateway $appgw

#Add New Listener for backend
Add-AzApplicationGatewayHttpListener `
  -ApplicationGateway $appgw `
  -Name Devmanh_BackendListener `
  -Protocol Http `
  -FrontendIPConfiguration $fipconfig `
  -FrontendPort $backendPort

  #Set Application Gateway with new listener
Set-AzApplicationGateway -ApplicationGateway $appgw



#################Add URL path map#############

#Get application gateway if required
$appgw = Get-AzApplicationGateway -ResourceGroupName Devmanh_RG -Name Devmanh_AppGateway

#Get existing HttpSetting
$poolSettings = Get-AzApplicationGatewayBackendHttpSettings -ApplicationGateway $appgw -Name Devmanh_PoolSettings

#Get existing Backend Pool for Image request
$imagePool = Get-AzApplicationGatewayBackendAddressPool -ApplicationGateway $appgw -Name Devmanh_imagesBackendPool

#Get existing Backend Pool for Vedio request
$videoPool = Get-AzApplicationGatewayBackendAddressPool -ApplicationGateway $appgw -Name Devmanh_videoBackendPool

#Get existing Backend Pool for default request
$defaultPool = Get-AzApplicationGatewayBackendAddressPool -ApplicationGateway $appgw -Name appGatewayBackendPool


#New rule for Image
$imagePathRule = New-AzApplicationGatewayPathRuleConfig -Name Devmanh_imagePathRule -Paths "/images/*" -BackendAddressPool $imagePool -BackendHttpSettings $poolSettings

#New rule for Vedio
$videoPathRule = New-AzApplicationGatewayPathRuleConfig -Name Devmanh_videoPathRule -Paths "/video/*" -BackendAddressPool $videoPool -BackendHttpSettings $poolSettings


#Configure URL path for the AG 
Add-AzApplicationGatewayUrlPathMapConfig -ApplicationGateway $appgw -Name Devmanh_urlpathmap -PathRules $imagePathRule, $videoPathRule -DefaultBackendAddressPool $defaultPool -DefaultBackendHttpSettings $poolSettings

#Set Application Gaetway 
Set-AzApplicationGateway -ApplicationGateway $appgw


#####################Add routing rule###################

#Get application gateway if required
$appgw = Get-AzApplicationGateway -ResourceGroupName Devmanh_RG -Name Devmanh_AppGateway

#Get newly created listener if required
$backendlistener = Get-AzApplicationGatewayHttpListener -ApplicationGateway $appgw -Name Devmanh_BackendListener

#Get Url path mapping if required
$urlPathMap = Get-AzApplicationGatewayUrlPathMapConfig -ApplicationGateway $appgw -Name Devmanh_urlpathmap

#Add a new path based routing Rule 
Add-AzApplicationGatewayRequestRoutingRule `
  -ApplicationGateway $appgw `
  -Name Devmanh_rule2 `
  -RuleType PathBasedRouting `
  -HttpListener $backendlistener `
  -UrlPathMap $urlPathMap

  #Set Application Gateway
Set-AzApplicationGateway -ApplicationGateway $appgw


########################Create virtual machine scale sets########################


#Get Exiting Vnet
$vnet = Get-AzVirtualNetwork -ResourceGroupName Devmanh_RG -Name Devmanh_VNet


#Get application gateway if required
$appgw = Get-AzApplicationGateway -ResourceGroupName Devmanh_RG -Name Devmanh_AppGateway

#Get existing Backend Pool for Image request
$imagesPool = Get-AzApplicationGatewayBackendAddressPool -ApplicationGateway $appgw -Name Devmanh_imagesBackendPool

#Get existing Backend Pool for Vedio request
$videoPool = Get-AzApplicationGatewayBackendAddressPool -ApplicationGateway $appgw -Name Devmanh_videoBackendPool

#Get existing Backend Pool for default request
$backendPool = Get-AzApplicationGatewayBackendAddressPool -ApplicationGateway $appgw -Name appGatewayBackendPool

for ($i=1; $i -le 3; $i++)
{
  if ($i -eq 1)
  {
     $poolId = $backendPool.Id
  }
  if ($i -eq 2) 
  {
    $poolId = $imagesPool.Id
  }
  if ($i -eq 3)
  {
    $poolId = $videoPool.Id
  }
  
  #Create new IP config for VMSS
  $ipConfig = New-AzVmssIpConfig -Name Devmanh_VmssIPConfig$i -SubnetId $vnet.Subnets[1].Id -ApplicationGatewayBackendAddressPoolsId $poolId

  #Configure VM Scale Set
  $vmssConfig = New-AzVmssConfig -Location westeurope -SkuCapacity 2 -SkuName Standard_B2s -UpgradePolicyMode Automatic

  #SET storage profile for VM Scale Set
  Set-AzVmssStorageProfile $vmssConfig -ImageReferencePublisher MicrosoftWindowsServer -ImageReferenceOffer WindowsServer -ImageReferenceSku 2016-Datacenter -ImageReferenceVersion latest -OsDiskCreateOption FromImage

  #SET storage profile for VM Scale Set
  Set-AzVmssOsProfile $vmssConfig -AdminUsername manasadmin -AdminPassword "password#1" -ComputerNamePrefix vmss$i
	
  #Add VMSS Network interrface config
  Add-AzVmssNetworkInterfaceConfiguration -VirtualMachineScaleSet $vmssConfig -Name Devmanh_VmssNetConfig$i -Primary $true -IPConfiguration $ipConfig

  #Create new VMSS
  New-AzVmss -ResourceGroupName Devmanh_RG -Name Devmanh_vmss$i -VirtualMachineScaleSet $vmssConfig
}

####################Install IIS#######################

$publicSettings = @{ "fileUris" = (,"https://raw.githubusercontent.com/Azure/azure-docs-powershell-samples/master/application-gateway/iis/appgatewayurl.ps1"); 
  "commandToExecute" = "powershell -ExecutionPolicy Unrestricted -File appgatewayurl.ps1" }

for ($i=1; $i -le 3; $i++)
{
  $vmss = Get-AzVmss -ResourceGroupName Devmanh_RG -VMScaleSetName Devmanh_vmss$i
   
  Add-AzVmssExtension -VirtualMachineScaleSet $vmss `
    -Name "customScript" `
    -Publisher "Microsoft.Compute" `
    -Type "CustomScriptExtension" `
    -TypeHandlerVersion 1.8 `
    -Setting $publicSettings

  Update-AzVmss -ResourceGroupName Devmanh_RG -Name Devmanh_vmss$i -VirtualMachineScaleSet $vmss
}



################TEST THE AG###################

Get-AzPublicIPAddress -ResourceGroupName Devmanh_RG -Name Devmanh_AG_PIPAddress

13.93.0.144
http://13.93.0.144:8080/video/test.htm
http://13.93.0.144:8080/images/test.htm