package cuiargs

import (
	"fmt"
	"log"
	"regexp"

	models "gitea.likemath.ru/alex/gogrep/internal/models"
	"github.com/alexflint/go-arg"
)

// ProcessConsoleArguments fills internal grep config
// Returns error if arguments filling is correct, but arguments are incorrect
// Panics and shows info if arguments are invalid
func ProcessConsoleArguments() (*models.GrepConfigInternal, error) {
	var args struct {
		Path    string `arg:"positional" default:".*" help:"extra RegEx for paths to match"`
		Pattern string `arg:"positional" help:"Regex for lines to match"`
	}
	arg.MustParse(&args)

	if args.Pattern == "" {
		log.Fatalf("No Pattern! Check `gogrep -h`")
	}

	res := &models.GrepConfigInternal{}

	var err error
	res.PathPattern, err = regexp.Compile(args.Path)
	if err != nil {
		return nil, fmt.Errorf("unable to compile path pattern Regexp: %v", args.Path)
	}

	res.TextPattern, err = regexp.Compile(args.Pattern)
	if err != nil {
		return nil, fmt.Errorf("unable to compile text pattern Regexp: %v", args.Pattern)
	}
	return res, nil
}