Simple Send Function

.gitignore

@@ -1,2 +1,3 @@
 **/bin
 **/obj
+**/appsettings.local.json

.vscode/launch.json

@@ -0,0 +1,28 @@
+{
+   // Use IntelliSense to find out which attributes exist for C# debugging
+   // Use hover for the description of the existing attributes
+   // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+   "version": "0.2.0",
+   "configurations": [
+        {
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/test/ContactForm.Tests/bin/Debug/netcoreapp2.1/ContactForm.Tests.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}/test/ContactForm.Tests",
+            // For more information about the 'console' field, see https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md#console-terminal-window
+            "console": "internalConsole",
+            "stopAtEntry": false,
+            "internalConsoleOptions": "openOnSessionStart"
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach",
+            "processId": "${command:pickProcess}"
+        }
+    ,]
+}

.vscode/tasks.json

@@ -0,0 +1,15 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/test/ContactForm.Tests/ContactForm.Tests.csproj"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

README.md

@@ -12,5 +12,5 @@ This function is based off of my [lamda-dotnet-console](https://github.com/hyett
 
 ```
 cd src/ContactForm
-dotnet lambda deploy-function
+dotnet lambda deploy-function ContactForm
 ```

src/ContactForm/App.cs

@@ -1,4 +1,13 @@
 using System;
+using System.Text;
+using System.Threading.Tasks;
+
+using ContactForm.Models;
+
+using MailKit.Net.Smtp;
+
+using MimeKit;
+using MimeKit.Text;
 
 using Serilog;
 
@@ -20,12 +29,37 @@ namespace ContactForm
                 throw new ArgumentNullException(nameof(settings));
         }
 
-        public string Run(string input)
+        public async Task Run(ContactRequest input)
         {
-            _logger.Information("Lambda Function Starting");
-            var result = $"{_settings.Prefix}{input?.ToUpper()}";
-            _logger.Information("Lambda Function Finished");
-            return result;
+            var emailBody = new StringBuilder();
+            emailBody.AppendLine($"Name: {input.Name}");
+            emailBody.AppendLine($"Email: {input.Email}");
+            emailBody.AppendLine($"Phone: {input.Phone}");
+            emailBody.AppendLine($"Website: {input.Website}");
+            emailBody.AppendLine($"Message: {input.Body}");
+
+            await SendEmail(emailBody.ToString());
+        }
+
+        public async Task SendEmail(string body)
+        {
+            var message = new MimeMessage();
+            message.From.Add(new MailboxAddress("Contact Form", _settings.EmailFrom));
+            message.To.Add(new MailboxAddress(_settings.EmailTo));
+            message.Subject = "Contact Request";
+            message.Body = new TextPart(TextFormat.Text)
+            {
+                Text = body
+            };
+
+            using(var client = new SmtpClient())
+            {
+                client.Connect(_settings.Host, _settings.Port, _settings.Port == 465);
+                client.AuthenticationMechanisms.Remove("XOAUTH2");
+                await client.AuthenticateAsync(_settings.Username, _settings.Password);
+                await client.SendAsync(message);
+                await client.DisconnectAsync(true);
+            }
         }
     }
 }

src/ContactForm/ContactForm.csproj

@@ -18,8 +18,11 @@
     <PackageReference Include="Serilog.Extensions.Logging" Version="2.0.2"/>
     <PackageReference Include="Serilog.Settings.Configuration" Version="3.0.1"/>
     <PackageReference Include="Serilog.Sinks.Seq" Version="4.0.0"/>
+    <PackageReference Include="MimeKit" Version="2.1.0"/>
+    <PackageReference Include="MailKit" Version="2.1.0.3"/>
   </ItemGroup>
   <ItemGroup>
     <None Include="appsettings.json" CopyToPublishDirectory="Always" CopyToOutputDirectory="PreserveNewest"/>
+    <None Include="appsettings.local.json" CopyToPublishDirectory="PreserveNewest" CopyToOutputDirectory="PreserveNewest"/>
   </ItemGroup>
 </Project>

src/ContactForm/Function.cs

@@ -6,6 +6,8 @@ using System.Threading.Tasks;
 
 using Amazon.Lambda.Core;
 
+using ContactForm.Models;
+
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 
@@ -29,11 +31,12 @@ namespace ContactForm
         /// <param name="input"></param>
         /// <param name="context"></param>
         /// <returns>string</returns>
-        public string FunctionHandler(string input, ILambdaContext context)
+        public string FunctionHandler(ContactRequest input, ILambdaContext context)
         {
             var configuration = new ConfigurationBuilder()
                 .SetBasePath(Directory.GetCurrentDirectory())
                 .AddJsonFile("appsettings.json", optional : false, reloadOnChange : true)
+                .AddJsonFile("appsettings.local.json", optional : true, reloadOnChange : true)
                 .AddEnvironmentVariables(prefix: "LAMBDA_")
                 .Build();
 
@@ -50,9 +53,12 @@ namespace ContactForm
             ConfigureServices(serviceCollection);
 
             var serviceProvider = serviceCollection.BuildServiceProvider();
-            var result = serviceProvider.GetService<App>().Run(input);
+            var appService = serviceProvider.GetService<App>();
+
+            appService.Run(input).GetAwaiter().GetResult();
+
             Log.CloseAndFlush();
-            return result;
+            return "OK";
         }
 
         private void ConfigureServices(IServiceCollection serviceCollection)

src/ContactForm/Models/ContactRequest.cs

@@ -0,0 +1,11 @@
+namespace ContactForm.Models
+{
+    public class ContactRequest
+    {
+        public string Name { get; set; }
+        public string Email { get; set; }
+        public string Phone { get; set; }
+        public string Website { get; set; }
+        public string Body { get; set; }
+    }
+}

src/ContactForm/Settings/AppSettings.cs

@@ -2,6 +2,11 @@ namespace ContactForm
 {
     public class AppSettings
     {
-        public string Prefix { get; set; }
+        public string EmailFrom { get; set; }
+        public string EmailTo { get; set; }
+        public string Host { get; set; }
+        public int Port { get; set; }
+        public string Username { get; set; }
+        public string Password { get; set; }
     }
 }

src/ContactForm/appsettings.json

@@ -1,6 +1,11 @@
 {
   "App": {
-    "Prefix": "Test"
+    "EmailFrom": "sender@example.com",
+    "EmailTo": "hello@example.com",
+    "Host": "smtp.example.com",
+    "Port": 465,
+    "Username": "email-username",
+    "Password": "email-password"
   },
   "Serilog": {
     "Using": ["Serilog.Sinks.Seq"],

test/ContactForm.Tests/ContactForm.Tests.csproj

@@ -19,5 +19,6 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="appsettings.json" CopyToPublishDirectory="Always" CopyToOutputDirectory="PreserveNewest"/>
+    <None Include="appsettings.local.json" CopyToPublishDirectory="PreserveNewest" CopyToOutputDirectory="PreserveNewest"/>
   </ItemGroup>
 </Project>

test/ContactForm.Tests/FunctionTest.cs

@@ -7,6 +7,7 @@ using Amazon.Lambda.Core;
 using Amazon.Lambda.TestUtilities;
 
 using ContactForm;
+using ContactForm.Models;
 
 using Xunit;
 
@@ -15,15 +16,23 @@ namespace ContactForm.Tests
     public class FunctionTest
     {
         [Fact]
-        public void TestToUpperFunction()
+        public void TestOKReturned()
         {
-
-            // Invoke the lambda function and confirm the string was upper cased.
             var function = new Function();
             var context = new TestLambdaContext();
-            var upperCase = function.FunctionHandler("hello world", context);
 
-            Assert.Equal("TestHELLO WORLD", upperCase);
+            var contactRequest = new ContactRequest()
+            {
+                Name = "James Smith",
+                Email = "hello@example.com",
+                Phone = "01234567",
+                Website = "https://www.example.com",
+                Body = "This is a message"
+            };
+
+            var upperCase = function.FunctionHandler(contactRequest, context);
+
+            Assert.Equal("OK", upperCase);
         }
     }
 }