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/*
 * Copyright (C) 2014 Square, Inc.
 *
 * 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 okhttp3

import java.nio.charset.Charset
import java.util.Collections.singletonMap
import java.util.Collections.unmodifiableMap
import java.util.Locale.US
import kotlin.text.Charsets.ISO_8859_1
import okhttp3.internal.commonEquals
import okhttp3.internal.commonHashCode
import okhttp3.internal.commonToString
import okhttp3.internal.lowercase

actual class Challenge actual constructor(
  @get:JvmName("scheme") actual val scheme: String,

  authParams: Map
) {
  @get:JvmName("authParams") actual val authParams: Map

  @get:JvmName("realm") actual val realm: String?
    get() = authParams["realm"]

  /** The charset that should be used to encode the credentials. */
  @get:JvmName("charset") val charset: Charset
    get() {
      val charset = authParams["charset"]
      if (charset != null) {
        try {
          return Charset.forName(charset)
        } catch (ignore: Exception) {
        }
      }
      return ISO_8859_1
    }

  actual constructor(scheme: String, realm: String) : this(scheme, singletonMap("realm", realm))

  init {
    val newAuthParams = mutableMapOf()
    for ((key, value) in authParams) {
      val newKey = key?.lowercase(US)
      newAuthParams[newKey] = value
    }
    this.authParams = unmodifiableMap(newAuthParams)
  }

  /** Returns a copy of this charset that expects a credential encoded with [charset]. */
  fun withCharset(charset: Charset): Challenge {
    val authParams = this.authParams.toMutableMap()
    authParams["charset"] = charset.name()
    return Challenge(scheme, authParams)
  }

  @JvmName("-deprecated_scheme")
  @Deprecated(
      message = "moved to val",
      replaceWith = ReplaceWith(expression = "scheme"),
      level = DeprecationLevel.ERROR)
  fun scheme(): String = scheme

  @JvmName("-deprecated_authParams")
  @Deprecated(
      message = "moved to val",
      replaceWith = ReplaceWith(expression = "authParams"),
      level = DeprecationLevel.ERROR)
  fun authParams(): Map = authParams

  @JvmName("-deprecated_realm")
  @Deprecated(
      message = "moved to val",
      replaceWith = ReplaceWith(expression = "realm"),
      level = DeprecationLevel.ERROR)
  fun realm(): String? = realm

  @JvmName("-deprecated_charset")
  @Deprecated(
      message = "moved to val",
      replaceWith = ReplaceWith(expression = "charset"),
      level = DeprecationLevel.ERROR)
  fun charset(): Charset = charset

  actual override fun equals(other: Any?): Boolean = commonEquals(other)

  actual override fun hashCode(): Int = commonHashCode()

  actual override fun toString(): String = commonToString()
}




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