package sec

import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/hex"
	"math/rand"

	"git.clearsky.net.au/cody/gex.git/srv"
)

var permissions = make(map[string][]string)

func Route(pattern string, roles []string, handler func(req *srv.Req, res srv.Res)) {
	permissions[pattern] = roles
	srv.Route(pattern, handler)
}

func Hash(key string, data string) string {
	bKey := []byte(key)
	bData := []byte(data)
	h := hmac.New(sha256.New, bKey)
	h.Write(bData)
	return hex.EncodeToString(h.Sum(nil))
}

func Salt(length int) string {
	const charset = "1234567890-=!@#$%^&*()_+abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
	b := make([]byte, length)
	for i := range b {
		b[i] = charset[rand.Intn(len(charset))]
	}
	return string(b)
}