Added host.json when using UseAppSettings extension to be used by Azure Functions settings

[junalmeida]

No description provided.

[LeastOne]

Thanks for this change, I was on the prior version and got stuck with the host.json changes missing. Thanks also for maintaining this project, its the perfect Azure Functions DI solution IMO. I do have one question, is there a specific reason that the appsettings.json reference is optional: false instead of optional: true? I ask because a newly created Azure Functions project in Visual Studio doesn't include an appsettings.json file opting instead for local.settings.json. Consequently, in my case I'm forced to add an empty appsettings.json just to satisfy the optional: false requirement of UseAppSettings. Would it be possible to change the appsettings.json reference to optional: true?

[junalmeida]

Hello @LeastOne, I'm glad to see this project is working well for you. Fell free to open issues with suggestions or problems.
Answering your question, the UseAppSettings method is designed to make use of appsettings.json. If local.settings.json and hosts.json is enough for your project, you don't need to call UseAppSettings. This is not really required for the DI itself to work (to be honest this feature is not totally related to DI itself).

So since, the call to UseAppSettings is optional, I see no point on calling it when you have no appsettings file.

Let me know if I could be missing any important detail in a common use case.

[LeastOne]

@junalmeida, thanks for the response. I think your response / perspective is certainly logical. However, in my instance I was planning on using the appsettings.json file locally but then excluding it from deployment, which I believe to be a valid use case. Without said feature I decided to instead include the appsettings.json file in my deployment which contains basic default non-secret values that end-up getting replaced by the Azure host app-setting environment variables. Anyway, just passing this feedback along as food for thought. Very thankful for your solution as a part of my project.