// Copyright 2020-2022 Toyota Connected North America
//
// 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.

#include "accessibility.h"

#include <flutter/standard_message_codec.h>

#include "engine.h"
#include "logging.h"

void Accessibility::OnPlatformMessage(const FlutterPlatformMessage* message,
                                      void* userdata) {
  const auto engine = static_cast<Engine*>(userdata);
  auto& codec = flutter::StandardMessageCodec::GetInstance();
  const auto obj = codec.DecodeMessage(message->message, message->message_size);

  if (!obj->IsNull()) {
    auto map = std::get<flutter::EncodableMap>(*obj);
    auto type = std::get<std::string>(map[flutter::EncodableValue("type")]);
    auto data =
        std::get<flutter::EncodableMap>(map[flutter::EncodableValue("data")]);
    auto msg = std::get<std::string>(data[flutter::EncodableValue("message")]);

    SPDLOG_DEBUG("({}) Accessibility: type: {}, message: {}",
                 engine->GetIndex(), type, msg);

    if (type == "disableAnimations") {
      auto value = engine->GetAccessibilityFeatures();
      const auto enabled = std::get<bool>(data[flutter::EncodableValue("enabled")]);
      if (enabled) {
        value |= FlutterAccessibilityFeature::
            kFlutterAccessibilityFeatureDisableAnimations;
      } else {
        value &= ~FlutterAccessibilityFeature::
                     kFlutterAccessibilityFeatureDisableAnimations;
      }
      engine->UpdateAccessibilityFeatures(value);
      SPDLOG_DEBUG("({}) Accessibility: type: {}, enabled: {}",
                   engine->GetIndex(), type, (enabled ? "true" : "false"));
    }
  }

  engine->SendPlatformMessageResponse(message->response_handle, nullptr, 0);
}