package config

import (
	"errors"
	"fmt"
	"os"

	"github.com/akamensky/argparse"
)

const (
	defaultConfigPath = ".config/grm/config.yaml"
)

func getDefaultConfigDir() string {
	// Only systems like Unix, Linux, and Windows systems are supported
	userHomeDir, _ := os.UserHomeDir()
	return fmt.Sprintf("%v/%v", userHomeDir, defaultConfigPath)
}

func ParseCliArguments(name, description string, arguments []string) (CliArguments, error) {

	parser := argparse.NewParser(name, description)

	syncCMD := parser.NewCommand("sync", "Synchronize repositories with remote branches, if the repository does not exist, clone it. (If pulling is not possible, the repository will be fetched)")
	statusCMD := parser.NewCommand("status", "Get information about repositories")

	configFile := parser.String("c", "config-file", &argparse.Options{
		Default: getDefaultConfigDir(),
		Help:    "Path to the configuration file",
	})

	version := parser.Flag("v", "version", &argparse.Options{
		Default: false,
		Help:    "Print version",
	})

	color := parser.Flag("", "no-color", &argparse.Options{
		Default: false,
		Help:    "Turn off color printing",
	})

	limitName := parser.String("n", "name", &argparse.Options{
		Help: "Limit action to the specified repository name",
	})

	limitTags := parser.StringList("t", "tag", &argparse.Options{
		Help: "Limit actions to repositories that contain specific tags",
	})

	limitRoutines := parser.Int("", "max-concurrent-process", &argparse.Options{
		Default: 10,
		Help:    "Determine how many tasks can run simultaneously",
	})

	if err := parser.Parse(arguments); err != nil {
		return CliArguments{}, errors.New(parser.Usage("Please follow this help"))
	}

	if !syncCMD.Happened() && !(*version) && !statusCMD.Happened() {
		return CliArguments{}, errors.New(errNoCommand)
	}

	if *limitName != "" && len(*limitTags) != 0 {
		return CliArguments{}, errors.New(errNameAndTagsTogether)
	}

	return CliArguments{
		ConfigurationFile: *configFile,
		Sync:              syncCMD.Happened(),
		Status:            statusCMD.Happened(),
		Version:           *version,
		Color:             !(*color),
		LimitToName:       *limitName,
		LimitToTags:       *limitTags,
		Routines:          *limitRoutines,
	}, nil
}