// Copyright (c) 2012 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 "device/gamepad/gamepad_test_helpers.h"

namespace device {

MockGamepadDataFetcher::MockGamepadDataFetcher(
    const blink::WebGamepads& test_data)
    : test_data_(test_data),
      read_data_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
                 base::WaitableEvent::InitialState::NOT_SIGNALED) {}

MockGamepadDataFetcher::~MockGamepadDataFetcher() {}

GamepadSource MockGamepadDataFetcher::source() {
  return GAMEPAD_SOURCE_TEST;
}

void MockGamepadDataFetcher::GetGamepadData(bool devices_changed_hint) {
  {
    base::AutoLock lock(lock_);

    for (unsigned int i = 0; i < blink::WebGamepads::itemsLengthCap; ++i) {
      if (test_data_.items[i].connected) {
        PadState* pad = GetPadState(i);
        if (pad)
          memcpy(&pad->data, &test_data_.items[i], sizeof(blink::WebGamepad));
      }
    }
  }
  read_data_.Signal();
}

void MockGamepadDataFetcher::WaitForDataRead() {
  return read_data_.Wait();
}

void MockGamepadDataFetcher::WaitForDataReadAndCallbacksIssued() {
  // The provider will read the data on the background thread (setting the
  // event) and *then* will issue the callback on the client thread. Waiting for
  // it to read twice is a simple way to ensure that it was able to issue
  // callbacks for the first read (if it issued one).
  WaitForDataRead();
  WaitForDataRead();
}

void MockGamepadDataFetcher::SetTestData(const blink::WebGamepads& new_data) {
  base::AutoLock lock(lock_);
  test_data_ = new_data;
}

MockGamepadSharedBuffer::MockGamepadSharedBuffer() {
  size_t data_size = sizeof(blink::WebGamepads);
  bool res = shared_memory_.CreateAndMapAnonymous(data_size);
  CHECK(res);
  blink::WebGamepads* buf = buffer();
  memset(buf, 0, sizeof(blink::WebGamepads));
}

base::SharedMemory* MockGamepadSharedBuffer::shared_memory() {
  return &shared_memory_;
}

blink::WebGamepads* MockGamepadSharedBuffer::buffer() {
  void* mem = shared_memory_.memory();
  CHECK(mem);
  return static_cast<blink::WebGamepads*>(mem);
}

void MockGamepadSharedBuffer::WriteBegin() {}

void MockGamepadSharedBuffer::WriteEnd() {}

GamepadTestHelper::GamepadTestHelper() {}

GamepadTestHelper::~GamepadTestHelper() {}

}  // namespace device