package main

import (
	"flag"
	"log"

	"github.com/caarlos0/env"
)

type botOptions struct {
	Debug        bool   `env:"BOT_DEBUG" envDefault:"false"`
	LogConvIDStr string `env:"BOT_LOG_CONVID" envDefault:""`
	HomePath     string `envDefault:""`
	JSON         bool   `env:"BOT_LOG_JSON" envDefault:"false"`
}

func parseArgs(args []string) botOptions {
	// parse environment
	opts := botOptions{}
	if err := env.Parse(&opts); err != nil {
		log.Fatalf("Unable to parse env vars: %+v", err)
	}
	// parse CLI
	flags := flag.NewFlagSet(args[0], flag.ExitOnError)
	cliOpts := botOptions{}
	flags.BoolVar(&cliOpts.Debug, "debug", false, "enables debugging")
	flags.BoolVar(&cliOpts.JSON, "json", false, "enables JSON logging")
	flags.StringVar(&cliOpts.LogConvIDStr, "log-convid", "", "set the keybase conversation log id")
	flags.StringVar(&cliOpts.HomePath, "kbhome", "", "sets alternate keybase home folder for debugging")
	if err := flags.Parse(args[1:]); err != nil {
		log.Fatalf("Unable to parse cli args: %+v", err)
	}
	//overwrite ENV with CLI
	if flags.NFlag() > 0 {
		if cliOpts.Debug == true {
			opts.Debug = true
		}
		if cliOpts.JSON == true {
			opts.JSON = true
		}
		if cliOpts.HomePath != "" {
			opts.HomePath = cliOpts.HomePath
		}
		if cliOpts.LogConvIDStr != "" {
			opts.LogConvIDStr = cliOpts.LogConvIDStr
		}
	}
	return opts
}