papero/cli/utils.go

package cli

import (
	"flag"
	"fmt"
	"io"
)

type GlobalOpts struct {
	ConfigPath   string
	Debug        bool
	ConfigStanza string
}

func (o GlobalOpts) String() string {
	return "--config --debug --account"
}

type Command interface {
	Func([]string) error
	Help(io.Writer, *flag.FlagSet)
}

type CommandMap map[string]Command

type ProgramInfo struct {
	Name     string
	Opts     GlobalOpts
	Commands CommandMap
}

func Usage(w io.Writer, info ProgramInfo) {
	fmt.Fprintf(w, "USAGE: %s [%s] SUBCOMMAND [subcommand opts]\n", info.Name, info.Opts)
	fmt.Fprintf(w, "\nSUBCOMMANDS:\n")
	for command := range info.Commands {
		fmt.Fprintf(w, "\t%s\n", command)
	}
}