package main

import (
	"io/ioutil"
	"path/filepath"

	"github.com/logrusorgru/aurora"
)

func hasGo() bool {
	h, err := hasGoAux(".", 3)
	if err != nil {
		Warn("error scanning directory for go.mod: %v", aurora.Red(err))
		return false
	}
	return h
}

func hasGoAux(dir string, depth int) (bool, error) {
	fi, err := ioutil.ReadDir(dir)
	if err != nil {
		return false, err
	}

	var dirs []string

	for _, f := range fi {
		switch {
		case f.Name()[0] == '.':
			// do nothing

		case f.IsDir():
			dirs = append(dirs, f.Name())

		case f.Name() == "go.mod":
			return true, nil
		}
	}

	if depth == 0 {
		return false, nil
	}
	depth--

	for _, subdir := range dirs {
		h, err := hasGoAux(filepath.Join(dir, subdir), depth)
		if h || err != nil {
			return h, err
		}
	}

	return false, nil
}