package Filesystem

import (
	"crypto/sha1"
	"regexp"

	"PackageManager/Variables"
)

var (
	sha1Hash = sha1.New()

	PruneRegex  []*regexp.Regexp
	IgnoreRegex []*regexp.Regexp
)

func init() {
	var e error

	e = InitPruneRegex()
	if e != nil {
		panic(e)
	}

	e = InitIgnoreRegex()
	if e != nil {
		panic(e)
	}
}

func InitPruneRegex() error {
	var (
		r *regexp.Regexp
		s string
		e error
	)

	for _, s = range Variables.PruneRegexPaths {
		r, e = regexp.Compile(s)
		if e != nil {
			return e
		}
		PruneRegex = append(PruneRegex, r)
	}
	return nil
}

func InitIgnoreRegex() error {
	var (
		r *regexp.Regexp
		s string
		e error
	)

	for _, s = range Variables.IgnoreRegexPaths {
		r, e = regexp.Compile(s)
		if e != nil {
			return e
		}
		IgnoreRegex = append(IgnoreRegex, r)
	}
	return nil
}

func matchAny(p string, a []*regexp.Regexp) bool {
	var (
		regex *regexp.Regexp
		match bool
	)
	for _, regex = range a {
		match = regex.MatchString(p)
		if match == true {
			return true
		}
	}
	return false
}