//go:build generate
// +build generate

package main

import (
	"flag"
	"github.com/peterbourgon/ff/v3/ffcli"
	"os"

	"go.jolheiser.com/ffmd"
)

//go:generate go run main.go
func main() {
	fs := flag.NewFlagSet("myapp", flag.ExitOnError)
	stringFlag := fs.String("string-flag", "", "String flag")
	fs.StringVar(stringFlag, "sf", *stringFlag, "--string-flag")
	intFlag := fs.Int("int-flag", 0, "Int flag")
	fs.IntVar(intFlag, "if", *intFlag, "--int-flag")
	boolFlag := fs.Bool("bool-flag", false, "Bool flag")
	fs.BoolVar(boolFlag, "bf", *boolFlag, "--bool-flag")
	durFlag := fs.Duration("duration-flag", 0, "Duration flag")
	fs.DurationVar(durFlag, "df", *durFlag, "--duration-flag")

	cmd := &ffcli.Command{
		Name:        "myapp",
		FlagSet:     fs,
		Subcommands: nil,
	}

	md, err := ffmd.Command(cmd)
	if err != nil {
		panic(err)
	}
	write("README.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)
	}
}