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// Copyright (c) 2017-2022 Cloudflare, Inc.
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// Licensed under the Apache 2.0 license found in the LICENSE file or at:
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//     https://opensource.org/licenses/Apache-2.0
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#pragma once
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#include <workerd/jsg/jsg.h>
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#include <kj/common.h>
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#include <kj/string.h>
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#include <cstdint>
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struct UConverter;
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namespace workerd::api::node {
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using EncodingValue = uint8_t;
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enum Encoding : EncodingValue {
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  ASCII = 0,
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  LATIN1 = 1,
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  UTF8 = 2,
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  UTF16LE = 3,
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  BASE64 = 4,
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  BASE64URL = 5,
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  HEX = 6,
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};
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namespace i18n {
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// Used by BufferUtil::transcode.
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constexpr bool canBeTranscoded(Encoding encoding) noexcept {
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  switch (encoding) {
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    case Encoding::ASCII:
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    case Encoding::LATIN1:
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    case Encoding::UTF16LE:
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    case Encoding::UTF8:
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      return true;
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    default:
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      return false;
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  }
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}
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class Converter final {
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 public:
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  explicit Converter(Encoding encoding, kj::StringPtr substitude = ""_kj);
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  KJ_DISALLOW_COPY_AND_MOVE(Converter);
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  UConverter* conv() const;
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  size_t maxCharSize() const;
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  size_t minCharSize() const;
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  void reset();
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  void setSubstituteChars(kj::StringPtr sub);
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 private:
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  kj::Own<UConverter> conv_;
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};
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jsg::JsUint8Array transcode(
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    jsg::Lock& js, kj::ArrayPtr<kj::byte> source, Encoding fromEncoding, Encoding toEncoding);
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}  // namespace i18n
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}  // namespace workerd::api::node
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KJ_DECLARE_NON_POLYMORPHIC(UConverter)