Update the example and fix two bugs in worker (#34)

1. Add a check to see if there is anything returned before getting the last item.
2. When deserializing JSON, return a case-insensitive Hashtable instance, so `<blah>.Name` works for both `"name": "Joe"` and `"Name": "Joe"`.

Author: daxian-dbw

examples/PSCoreApp/MyHttpTrigger/run.ps1

@@ -1,26 +1,33 @@
-# Invoked with Invoke-RestMethod:
-# irm http://localhost:7071/api/MyHttpTrigger?Name=Tyler
-# Input bindings are added via param block
+# Trigger the function by running Invoke-RestMethod:
+#    (via get method): Invoke-RestMethod -Uri http://localhost:7071/api/MyHttpTrigger?Name=Joe
+#   (via post method): Invoke-RestMethod `
+#                        -Uri http://localhost:7071/api/MyHttpTrigger `
+#                        -Method Post `
+#                        -Body (ConvertTo-Json @{ Name="Joe" }) `
+#                        -Headers @{'Content-Type' = 'application/json' }`
 
+# Input bindings are passed in via param block.
 param($req, $TriggerMetadata)
 
-# If no name was passed by query parameter
-$name = 'World'
+# You can write to the Azure Functions log streams as you would in a normal PowerShell script.
+Write-Verbose "PowerShell HTTP trigger function processed a request." -Verbose
 
 # You can interact with query parameters, the body of the request, etc.
-if($req.Query.Name) {
-    $name = $req.Query.Name
-}
-
-# you can write to the same streams as you would in a normal PowerShell script
-Write-Verbose "Verbose $name" -Verbose
-Write-Warning "Warning $name"
+$name = $req.Query.Name
+if (-not $name) { $name = $req.Body.Name }
 
-# items in the pipeline get logged
-$name
+if($name) {
+    $status = 200
+    $body = "Hello " + $name
+}
+else {
+    $status = 400
+    $body = "Please pass a name on the query string or in the request body."
+}
 
-# You set the value of your output bindings by assignment `$nameOfOutputBinding = 'foo'`
+# You associate values to output bindings by calling 'Push-OutputBinding'.
 Push-OutputBinding -Name res -Value ([HttpResponseContext]@{
-    Body = @{ Hello = $name }
-    ContentType = 'application/json'
+    StatusCode = $status
+    Body = $body
 })
+

src/PowerShell/PowerShellManager.cs

@@ -113,12 +113,14 @@ internal Hashtable InvokeFunction(
                 {
                     // Log everything we received from the pipeline and set the last one to be the ReturnObject
                     Collection<PSObject> pipelineItems = _pwsh.InvokeAndClearCommands<PSObject>();
-                    foreach (var psobject in pipelineItems)
+                    if (pipelineItems.Count > 0)
                     {
-                        _logger.Log(LogLevel.Information, $"OUTPUT: {psobject.ToString()}");
+                        foreach (var psobject in pipelineItems)
+                        {
+                            _logger.Log(LogLevel.Information, $"OUTPUT: {psobject.ToString()}");
+                        }
+                        returnObject =  pipelineItems[pipelineItems.Count - 1];
                     }
-                    
-                    returnObject = pipelineItems[pipelineItems.Count - 1];
                 }
 
                 var result = _pwsh.AddCommand("Azure.Functions.PowerShell.Worker.Module\\Get-OutputBinding")

src/Utility/TypeExtensions.cs

@@ -70,7 +70,8 @@ public static object ToObject (this TypedData data)
             switch (data.DataCase)
             {
                 case TypedData.DataOneofCase.Json:
-                    return JsonConvert.DeserializeObject<Hashtable>(data.Json);
+                    var hashtable = JsonConvert.DeserializeObject<Hashtable>(data.Json);
+                    return new Hashtable(hashtable, StringComparer.OrdinalIgnoreCase);
                 case TypedData.DataOneofCase.Bytes:
                     return data.Bytes.ToByteArray();
                 case TypedData.DataOneofCase.Double: