Android application SMS to Slack.

I want an app – just for myself so does not need to have fancy graphics / looks etc. Just be functional. I’d like it done in Android Studio using Kotlin and I’d like the source code. Such that I can perhaps have a look and learn some things. The app is forward SMS to Slack. The interface into Slack is via webhooks which are simply (as best I can tell) a URL Post with Json body. So what it needs to be able to do is maintain a list of URL’s (webhooks) to be defined by me through the app and have additional properties for customisation of the JSON. Maybe 4 or 5 of those. So a list of urls (with a name label to identify) and a page associated where that url and associated properties (all strings) can be edited. Then there needs to be a set of rules as to how to handle the SMS. I’d envisage the rule specifying a label to identify the rule, one or more names or phone numbers comma separated, an option to filter by the text in the SMS and finally specify one or more webhooks to send the message to. So ultimately monitor SMS incoming, check the rules and send out http(s) posts with JSON body. 2 lists each editable. • 1 – Webhooks. • 2 - Rules. An option to start / stop with the app always running if started.