//go:build generate
// +build generate

package main

import (
	"flag"
	"os"
	"time"

	"go.jolheiser.com/ffmd"
)

//go:generate go run main.go
func main() {
	fs := flag.NewFlagSet("myapp", flag.ExitOnError)
	fs.String("string-flag", "", "String flag with no default")
	fs.String("string-flag-default", "string default", "String flag with default")
	fs.Int("int-flag", 0, "Int flag with no default")
	fs.Int("int-flag-default", 100, "Int flag with default")
	fs.Bool("bool-flag-f", false, "Bool flag false")
	fs.Bool("bool-flag-t", true, "Bool flag true")
	fs.Duration("duration-flag", 0, "Duration flag with no default")
	fs.Duration("duration-flag-default", time.Minute*5, "Duration flag with default")

	md, err := ffmd.FromFlagSet(fs)
	if err != nil {
		panic(err)
	}

	write("flagset.md", md)
}

func write(path, content string) {
	fi, err := os.Create(path)
	if err != nil {
		panic(err)
	}
	defer fi.Close()
	if _, err := fi.WriteString(content); err != nil {
		panic(err)
	}
}