ApiClientGenerator

A .NET 6.0 Strongly typed HttpApi Client Generator, mainly being used on a Blazor WebAssembly project. With this project, you can easily and quickly generate a strongly typed HttpClient, with some trimmings, and have it placed in your Blazor WebAssembly project.

How to use

Firstly, add the project from Nuget - GoLive.Generator.ApiClientGenerator, then add an AdditionalFile in your .csproj named "ApiClientGenerator.json", like so:

<ItemGroup>
     <AdditionalFiles Include="ApiClientGenerator.json" />
</ItemGroup>

There are a large number of options that are in the settings file:

{
  "OutputFiles":[
    "GeneratedApiClient.cs"
  ],
  "JSONAPIRepresentationFile":[
    "GeneratedApiClient.json"
  ],
  "Namespace": "GoLive.Generator.ApiClientGenerator.Tests.WebApi.Generated",
  "CustomDiscriminator": "",
  "Includes": [
    "GoLive.Generator.ApiClientGenerator"
  ],
  "PreAppendLines": [
    "// ReSharper disable All"
  ],
  "PostAppendLines": [
    "// ReSharper disable All"
  ] ,
  "HideUrlsRegex": [
    "^/_]*",
    "^/WeatherForecast/_]*",
    "^_]*"
  ],
  "RouteTemplate":"/api/{area:exists}/{controller=Home}/{action=Index}/{id?}",
  "ResponseWrapper" :{
    "Enabled": true,
    "ExtractHeaders":{
      "CorrelationId": "X-Correlation-Id"
    }
  },
  "OutputUrls": true,
  "OutputUrlsPostfix": "_Url",
  "OutputJSONSourceGenerator": true,
  "JSONSourceGeneratorSettings":{
    "Converters": [
      
    ]
  },
  "Properties":{
    "IgnoreGenericTypes" : [
      "System.Collections.Generic.List<T>"
    ],
    "IgnoreTypes":[
      "System.DateTime"
    ],
    "IgnoreThatHasAttribute":[
      "GoLive.Generator.ApiClientGenerator.Tests.WebApi.CustomAttributeModelBinderAttribute"
    ],
    "TransformType":[
      {
        "SourceType": "*",
        "DestinationType" : "System.String",
        "ContainsAttribute": "GoLive.Generator.ApiClientGenerator.Tests.WebApi.CustomAttributeModelBinder2Attribute"
      },
      {
        "SourceType": "*",
        "DestinationType" : "System.String",
        "ContainsAttribute": "GoLive.Generator.ApiClientGenerator.Tests.WebApi.CustomAttributeModelBinder3Attribute"
      }
    ]
  }
}

Explanation of options:

OutputFiles - this is the file (or files) that will be Generated
JSONAPIRepresentationFile (optional) - this will output a .json file that represents the API, if you want to use for an external process etc
Namespace - Namespace of the generated classes
CustomDiscriminator (optional) - If you want to use custom JSOn Dicriminators
Includes (optional) - Any additional Include statements to be added at the top
PreAppendLines / PostAppendLines (optional) - Any additional lines such as comments (to disable Resharper's processing)
HideUrlsRegex (optional) - Regex patterns, if you want to hide any URLs from being outputted, such as secret admin APIs
RouteTemplate - This is the route template that gets used to figure out the URLs
ResponseWrapper (optional) - If you want responses to be wrapped with a Response object, and a few options for it (such as pulling out headers etc)
OutputUrls / OutputUrlsPostfix (optional)- If you want to output pure methods that return URLs only
OutputJSONSourceGenerator (optional) - If you want to output a JSON Source Generator
Properties (optional) - processing properties (ignoring properties, changing their type, ignoring of methods that have attributes etc)

XML Comments on API

To get the XML comments pulling through on the API, you need to have:

<PropertyGroup>
  <GenerateDocumentationFile>true</GenerateDocumentationFile>
</PropertyGroup>

On your project's csproj to make the comments visible to the source code generator.

If you don't want XML comments enabled, set the config variable of "DisableXMLComments" to true in the json file.

Changelog

Version 3.0 - changed the way the API generation works (uses a central route template as opposed to hard coded), changed json settings file (not backwards compatible but not that different)
3.0.46 - Small issue where _Url's were getting erroneous querystring parameters that were part of URL.
3.0.47 - Remove trailing / from URLs as it will break optional parameters, might need to think about a better way to do this.
3.0.49 - Expose AllAttributes property on Classes / Methods for external processing
3.0.50 - Added a bit of logic to AllAttributes and added missing class processing
3.1.51 - Fixed a bug where transform to a Primitive Type wasn't being removed from body, added HTTP Verb functionality, added ability to generate Idempotency keys, and added ability of AllowedStringValue to be a strongly typed struct (to help enforce)