package cmd

import (
	"log"
	"reflect"
	"runtime"
)

type server interface {
	ListenAndServe() error
}

func mustInit(fn func() error) {
	err := fn()
	if err != nil {
		ptr := reflect.ValueOf(fn).Pointer()
		fi := runtime.FuncForPC(ptr)
		log.Fatalf("%s failed: %v", fi.Name(), err)
	}
}

func mustInitAny[T any](s T, fn func(s T) error) {
	err := fn(s)
	if err != nil {
		ptr := reflect.ValueOf(fn).Pointer()
		fi := runtime.FuncForPC(ptr)
		log.Fatalf("%s(T) failed: %v", fi.Name(), err)
	}
}