// This file is generated by DispatcherBase_cpp.template.

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include {{format_include(config.protocol.package, "base_string_adapter")}}
#include {{format_include(config.protocol.package, "Protocol")}}

#include <utility>
#include "base/base64.h"
#include "base/json/json_reader.h"
#include "base/memory/ptr_util.h"
#include "base/strings/string16.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"

{% for namespace in config.protocol.namespace %}
namespace {{namespace}} {
{% endfor %}

std::unique_ptr<protocol::Value> toProtocolValue(
    const base::Value* value, int depth) {
  if (!value || !depth)
    return nullptr;
  if (value->is_none())
    return protocol::Value::null();
  if (value->is_bool()) {
    bool inner;
    value->GetAsBoolean(&inner);
    return protocol::FundamentalValue::create(inner);
  }
  if (value->is_int()) {
    int inner;
    value->GetAsInteger(&inner);
    return protocol::FundamentalValue::create(inner);
  }
  if (value->is_double()) {
    double inner;
    value->GetAsDouble(&inner);
    return protocol::FundamentalValue::create(inner);
  }
  if (value->is_string()) {
    std::string inner;
    value->GetAsString(&inner);
    return protocol::StringValue::create(inner);
  }
  if (value->is_list()) {
    const base::ListValue* list = nullptr;
    value->GetAsList(&list);
    std::unique_ptr<protocol::ListValue> result = protocol::ListValue::create();
    for (size_t i = 0; i < list->GetSize(); i++) {
      const base::Value* item = nullptr;
      list->Get(i, &item);
      std::unique_ptr<protocol::Value> converted =
          toProtocolValue(item, depth - 1);
      if (converted)
        result->pushValue(std::move(converted));
    }
    return std::move(result);
  }
  if (value->is_dict()) {
    const base::DictionaryValue* dictionary = nullptr;
    value->GetAsDictionary(&dictionary);
    std::unique_ptr<protocol::DictionaryValue> result =
        protocol::DictionaryValue::create();
    for (base::DictionaryValue::Iterator it(*dictionary);
        !it.IsAtEnd(); it.Advance()) {
      std::unique_ptr<protocol::Value> converted =
          toProtocolValue(&it.value(), depth - 1);
      if (converted)
        result->setValue(it.key(), std::move(converted));
    }
    return std::move(result);
  }
  return nullptr;
}

std::unique_ptr<base::Value> toBaseValue(Value* value, int depth) {
  if (!value || !depth)
    return nullptr;
  if (value->type() == Value::TypeNull)
    return std::make_unique<base::Value>();
  if (value->type() == Value::TypeBoolean) {
    bool inner;
    value->asBoolean(&inner);
    return base::WrapUnique(new base::Value(inner));
  }
  if (value->type() == Value::TypeInteger) {
    int inner;
    value->asInteger(&inner);
    return base::WrapUnique(new base::Value(inner));
  }
  if (value->type() == Value::TypeDouble) {
    double inner;
    value->asDouble(&inner);
    return base::WrapUnique(new base::Value(inner));
  }
  if (value->type() == Value::TypeString) {
    std::string inner;
    value->asString(&inner);
    return base::WrapUnique(new base::Value(inner));
  }
  if (value->type() == Value::TypeArray) {
    ListValue* list = ListValue::cast(value);
    std::unique_ptr<base::ListValue> result(new base::ListValue());
    for (size_t i = 0; i < list->size(); i++) {
      std::unique_ptr<base::Value> converted =
          toBaseValue(list->at(i), depth - 1);
      if (converted)
        result->Append(std::move(converted));
    }
    return std::move(result);
  }
  if (value->type() == Value::TypeObject) {
    DictionaryValue* dict = DictionaryValue::cast(value);
    std::unique_ptr<base::DictionaryValue> result(new base::DictionaryValue());
    for (size_t i = 0; i < dict->size(); i++) {
      DictionaryValue::Entry entry = dict->at(i);
      std::unique_ptr<base::Value> converted =
          toBaseValue(entry.second, depth - 1);
      if (converted)
        result->SetWithoutPathExpansion(entry.first, std::move(converted));
    }
    return std::move(result);
  }
  return nullptr;
}

// static
std::unique_ptr<Value> StringUtil::parseMessage(
    const std::string& message, bool binary) {
  if (binary) {
    return Value::parseBinary(
        reinterpret_cast<const uint8_t*>(message.data()),
        message.length());
  }
  std::unique_ptr<base::Value> value = base::JSONReader::ReadDeprecated(message);
  return toProtocolValue(value.get(), 1000);
}

// static
ProtocolMessage StringUtil::jsonToMessage(String message) {
  return message;
}

// static
ProtocolMessage StringUtil::binaryToMessage(std::vector<uint8_t> message) {
  // TODO(pfeldman): figure out what to do with this copy.
  return std::string(reinterpret_cast<const char*>(message.data()), message.size());
}

StringBuilder::StringBuilder() {}

StringBuilder::~StringBuilder() {}

void StringBuilder::append(const std::string& s) {
  string_ += s;
}

void StringBuilder::append(char c) {
  string_ += c;
}

void StringBuilder::append(const char* characters, size_t length) {
  string_.append(characters, length);
}

// static
void StringUtil::builderAppendQuotedString(StringBuilder& builder,
                                           const String& str) {
  builder.append('"');
  base::string16 str16 = base::UTF8ToUTF16(str);
  escapeWideStringForJSON(reinterpret_cast<const uint16_t*>(&str16[0]),
                          str16.length(), &builder);
  builder.append('"');
}

std::string StringBuilder::toString() {
  return string_;
}

void StringBuilder::reserveCapacity(size_t capacity) {
  string_.reserve(capacity);
}

// static
String StringUtil::fromUTF16(const uint16_t* data, size_t length) {
  std::string utf8;
  base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(data), length, &utf8);
  return utf8;
}

Binary::Binary() : bytes_(new base::RefCountedBytes) {}
Binary::Binary(const Binary& binary) : bytes_(binary.bytes_) {}
Binary::Binary(scoped_refptr<base::RefCountedMemory> bytes) : bytes_(bytes) {}
Binary::~Binary() {}

String Binary::toBase64() const {
  std::string encoded;
  base::Base64Encode(
      base::StringPiece(reinterpret_cast<const char*>(bytes_->front()),
                        bytes_->size()),
      &encoded);
  return encoded;
}

// static
Binary Binary::fromBase64(const String& base64, bool* success) {
  std::string decoded;
  *success = base::Base64Decode(base::StringPiece(base64), &decoded);
  if (*success) {
    return Binary::fromString(std::move(decoded));
  }
  return Binary();
}

// static
Binary Binary::fromRefCounted(scoped_refptr<base::RefCountedMemory> memory) {
  return Binary(memory);
}

// static
Binary Binary::fromVector(std::vector<uint8_t> data) {
  return Binary(base::RefCountedBytes::TakeVector(&data));
}

// static
Binary Binary::fromString(std::string data) {
  return Binary(base::RefCountedString::TakeString(&data));
}

// static
Binary Binary::fromSpan(const uint8_t* data, size_t size) {
  return Binary(scoped_refptr<base::RefCountedBytes>(
      new base::RefCountedBytes(data, size)));
}

namespace {
int32_t ReadEnvelopeSize(const uint8_t* in) {
  return (in[0] << 24) + (in[1] << 16) + (in[2] << 8) + in[3];
}

void WriteEnvelopeSize(uint32_t value, uint8_t* out) {
  *(out++) = (value >> 24) & 0xFF;
  *(out++) = (value >> 16) & 0xFF;
  *(out++) = (value >> 8) & 0xFF;
  *(out++) = (value) & 0xFF;
}

}

bool AppendStringValueToMapBinary(base::StringPiece in,
    base::StringPiece key, base::StringPiece value, std::string* out) {
  if (in.size() < 1 + 1 + 4 + 1 + 1)
    return false;
  const uint8_t* envelope = reinterpret_cast<const uint8_t*>(in.data());
  if (cbor::kInitialByteForEnvelope != envelope[0])
    return false;
  if (cbor::kInitialByteFor32BitLengthByteString != envelope[1])
    return false;
  if (cbor::kInitialByteIndefiniteLengthMap != envelope[6])
    return false;

  uint32_t envelope_size = ReadEnvelopeSize(envelope + 2);
  if (envelope_size + 2 + 4 != in.size())
    return false;
  if (cbor::kStopByte != static_cast<uint8_t>(*in.rbegin()))
    return false;

  std::vector<uint8_t> encoded_entry;
  encoded_entry.reserve(1 + 4 + key.size() + 1 + 4 + value.size());
  span<uint8_t> key_span(
      reinterpret_cast<const uint8_t*>(key.data()), key.size());
  EncodeString8(key_span, &encoded_entry);
  span<uint8_t> value_span(
      reinterpret_cast<const uint8_t*>(value.data()), value.size());
  EncodeString8(value_span, &encoded_entry);

  out->clear();
  out->reserve(in.size() + encoded_entry.size());
  out->append(in.begin(), in.end() - 1);
  out->append(reinterpret_cast<const char*>(encoded_entry.data()),
      encoded_entry.size());
  out->append(1, static_cast<char>(cbor::kStopByte));
  std::size_t new_size = envelope_size + out->size() - in.size();
  if (new_size > static_cast<std::size_t>(
      std::numeric_limits<uint32_t>::max())) {
    return false;
  }
  WriteEnvelopeSize(new_size, reinterpret_cast<uint8_t*>(&*out->begin() + 2));
  return true;
}

bool AppendStringValueToMapJSON(base::StringPiece in,
    base::StringPiece key, base::StringPiece value, std::string* out) {
  if (!in.length() || *in.rbegin() != '}')
    return false;
  std::string suffix =
      base::StringPrintf(", \"%s\": \"%s\"}", key.begin(), value.begin());
  out->clear();
  out->reserve(in.length() + suffix.length() - 1);
  out->append(in.data(), in.length() - 1);
  out->append(suffix);
  return true;
}

{% for namespace in config.protocol.namespace %}
} // namespace {{namespace}}
{% endfor %}