package common

import (
	"github.com/urfave/cli/v2"
)

const (
	AppName   = "stillbox"
	EnvPrefix = "STILLBOX_"
)

const (
	TimeFormat = "Jan 2 15:04:05"
)

type cmdOptions interface {
	Options(*cli.Context) error
	Execute() error
}

func Action(c cmdOptions) cli.ActionFunc {
	return func(ctx *cli.Context) error {
		err := c.Options(ctx)
		if err != nil {
			return err
		}

		return c.Execute()
	}
}

func PtrTo[T any](t T) *T {
	return &t
}

func NilIfZero[T comparable](val T) *T {
	var zero T
	if val == zero {
		return nil
	}

	return &val
}

func ZeroIfNil[T any](v *T) T {
	var zero T
	if v == nil {
		return zero
	}

	return *v
}

func DefaultIfNilOrZero[T comparable](v *T, def T) T {
	if v == nil {
		return def
	}

	var zero T
	if *v == zero {
		return def
	}

	return *v
}