/*
 * Copyright (C) 2021 pedroSG94.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.pedro.rtsp.utils

import java.io.UnsupportedEncodingException
import java.security.MessageDigest
import java.security.NoSuchAlgorithmException

object AuthUtil {

  @JvmStatic
  fun getMd5Hash(buffer: String): String {
    val md: MessageDigest
    try {
      md = MessageDigest.getInstance("MD5")
      return bytesToHex(md.digest(buffer.toByteArray()))
    } catch (ignore: NoSuchAlgorithmException) {
    } catch (ignore: UnsupportedEncodingException) {
    }
    return ""
  }

  private fun bytesToHex(raw: ByteArray): String {
    return raw.joinToString("") { "%02x".format(it) }
  }
}