// 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 <stddef.h>

#include "base/macros.h"
#include "content/browser/gamepad/gamepad_standard_mappings.h"

namespace content {

namespace {

void MapperLogitechDualAction(const blink::WebGamepad& input,
                              blink::WebGamepad* mapped) {
  *mapped = input;
  mapped->buttons[BUTTON_INDEX_PRIMARY] = input.buttons[1];
  mapped->buttons[BUTTON_INDEX_SECONDARY] = input.buttons[2];
  mapped->buttons[BUTTON_INDEX_TERTIARY] = input.buttons[0];
  mapped->axes[AXIS_INDEX_RIGHT_STICK_Y] = input.axes[5];
  DpadFromAxis(mapped, input.axes[9]);

  mapped->buttonsLength = BUTTON_INDEX_COUNT;
  mapped->axesLength = AXIS_INDEX_COUNT;
}

void Mapper2Axes8Keys(const blink::WebGamepad& input,
                      blink::WebGamepad* mapped) {
  *mapped = input;
  mapped->buttons[BUTTON_INDEX_PRIMARY] = input.buttons[2];
  mapped->buttons[BUTTON_INDEX_SECONDARY] = input.buttons[1];
  mapped->buttons[BUTTON_INDEX_TERTIARY] = input.buttons[3];
  mapped->buttons[BUTTON_INDEX_QUATERNARY] = input.buttons[0];
  mapped->buttons[BUTTON_INDEX_DPAD_UP] = AxisNegativeAsButton(input.axes[1]);
  mapped->buttons[BUTTON_INDEX_DPAD_DOWN] = AxisPositiveAsButton(input.axes[1]);
  mapped->buttons[BUTTON_INDEX_DPAD_LEFT] = AxisNegativeAsButton(input.axes[0]);
  mapped->buttons[BUTTON_INDEX_DPAD_RIGHT] =
      AxisPositiveAsButton(input.axes[0]);

  // Missing buttons
  mapped->buttons[BUTTON_INDEX_LEFT_TRIGGER] = blink::WebGamepadButton();
  mapped->buttons[BUTTON_INDEX_RIGHT_TRIGGER] = blink::WebGamepadButton();
  mapped->buttons[BUTTON_INDEX_LEFT_THUMBSTICK] = blink::WebGamepadButton();
  mapped->buttons[BUTTON_INDEX_RIGHT_THUMBSTICK] = blink::WebGamepadButton();
  mapped->buttons[BUTTON_INDEX_META] = blink::WebGamepadButton();

  mapped->buttonsLength = BUTTON_INDEX_COUNT - 1;
  mapped->axesLength = 0;
}

void MapperDualshock4(const blink::WebGamepad& input,
                      blink::WebGamepad* mapped) {
  enum Dualshock4Buttons {
    DUALSHOCK_BUTTON_TOUCHPAD = BUTTON_INDEX_COUNT,
    DUALSHOCK_BUTTON_COUNT
  };

  *mapped = input;
  mapped->buttons[BUTTON_INDEX_PRIMARY] = input.buttons[1];
  mapped->buttons[BUTTON_INDEX_SECONDARY] = input.buttons[2];
  mapped->buttons[BUTTON_INDEX_TERTIARY] = input.buttons[0];
  mapped->buttons[BUTTON_INDEX_QUATERNARY] = input.buttons[3];
  mapped->buttons[BUTTON_INDEX_LEFT_SHOULDER] = input.buttons[4];
  mapped->buttons[BUTTON_INDEX_RIGHT_SHOULDER] = input.buttons[5];
  mapped->buttons[BUTTON_INDEX_LEFT_TRIGGER] = AxisToButton(input.axes[3]);
  mapped->buttons[BUTTON_INDEX_RIGHT_TRIGGER] = AxisToButton(input.axes[4]);
  mapped->buttons[BUTTON_INDEX_BACK_SELECT] = input.buttons[8];
  mapped->buttons[BUTTON_INDEX_START] = input.buttons[9];
  mapped->buttons[BUTTON_INDEX_LEFT_THUMBSTICK] = input.buttons[10];
  mapped->buttons[BUTTON_INDEX_RIGHT_THUMBSTICK] = input.buttons[11];
  mapped->buttons[BUTTON_INDEX_META] = input.buttons[12];
  mapped->buttons[DUALSHOCK_BUTTON_TOUCHPAD] = input.buttons[13];
  mapped->axes[AXIS_INDEX_RIGHT_STICK_Y] = input.axes[5];
  DpadFromAxis(mapped, input.axes[9]);

  mapped->buttonsLength = DUALSHOCK_BUTTON_COUNT;
  mapped->axesLength = AXIS_INDEX_COUNT;
}

void MapperIBuffalo(const blink::WebGamepad& input, blink::WebGamepad* mapped) {
  *mapped = input;
  mapped->buttons[BUTTON_INDEX_PRIMARY] = input.buttons[1];
  mapped->buttons[BUTTON_INDEX_SECONDARY] = input.buttons[0];
  mapped->buttons[BUTTON_INDEX_TERTIARY] = input.buttons[3];
  mapped->buttons[BUTTON_INDEX_QUATERNARY] = input.buttons[2];
  mapped->buttons[BUTTON_INDEX_BACK_SELECT] = input.buttons[6];
  mapped->buttons[BUTTON_INDEX_START] = input.buttons[7];
  mapped->buttons[BUTTON_INDEX_LEFT_TRIGGER] = input.buttons[4];
  mapped->buttons[BUTTON_INDEX_RIGHT_TRIGGER] = input.buttons[5];
  mapped->buttons[BUTTON_INDEX_DPAD_UP] = AxisNegativeAsButton(input.axes[1]);
  mapped->buttons[BUTTON_INDEX_DPAD_DOWN] = AxisPositiveAsButton(input.axes[1]);
  mapped->buttons[BUTTON_INDEX_DPAD_LEFT] = AxisNegativeAsButton(input.axes[0]);
  mapped->buttons[BUTTON_INDEX_DPAD_RIGHT] =
      AxisPositiveAsButton(input.axes[0]);
  mapped->buttonsLength = BUTTON_INDEX_COUNT - 1; /* no meta */
  mapped->axesLength = 2;
}

void MapperOnLiveWireless(const blink::WebGamepad& input,
                          blink::WebGamepad* mapped) {
  *mapped = input;
  mapped->buttons[BUTTON_INDEX_PRIMARY] = input.buttons[0];
  mapped->buttons[BUTTON_INDEX_SECONDARY] = input.buttons[1];
  mapped->buttons[BUTTON_INDEX_TERTIARY] = input.buttons[3];
  mapped->buttons[BUTTON_INDEX_QUATERNARY] = input.buttons[4];
  mapped->buttons[BUTTON_INDEX_LEFT_SHOULDER] = input.buttons[6];
  mapped->buttons[BUTTON_INDEX_RIGHT_SHOULDER] = input.buttons[7];
  mapped->buttons[BUTTON_INDEX_LEFT_TRIGGER] = AxisToButton(input.axes[2]);
  mapped->buttons[BUTTON_INDEX_RIGHT_TRIGGER] = AxisToButton(input.axes[5]);
  mapped->buttons[BUTTON_INDEX_BACK_SELECT] = input.buttons[10];
  mapped->buttons[BUTTON_INDEX_START] = input.buttons[11];
  mapped->buttons[BUTTON_INDEX_LEFT_THUMBSTICK] = input.buttons[13];
  mapped->buttons[BUTTON_INDEX_RIGHT_THUMBSTICK] = input.buttons[14];
  mapped->buttons[BUTTON_INDEX_META] = input.buttons[12];
  mapped->axes[AXIS_INDEX_RIGHT_STICK_X] = input.axes[3];
  mapped->axes[AXIS_INDEX_RIGHT_STICK_Y] = input.axes[4];
  DpadFromAxis(mapped, input.axes[9]);

  mapped->buttonsLength = BUTTON_INDEX_COUNT;
  mapped->axesLength = AXIS_INDEX_COUNT;
}

void MapperADT1(const blink::WebGamepad& input, blink::WebGamepad* mapped) {
  *mapped = input;
  mapped->buttons[BUTTON_INDEX_PRIMARY] = input.buttons[0];
  mapped->buttons[BUTTON_INDEX_SECONDARY] = input.buttons[1];
  mapped->buttons[BUTTON_INDEX_TERTIARY] = input.buttons[3];
  mapped->buttons[BUTTON_INDEX_QUATERNARY] = input.buttons[4];
  mapped->buttons[BUTTON_INDEX_LEFT_SHOULDER] = input.buttons[6];
  mapped->buttons[BUTTON_INDEX_RIGHT_SHOULDER] = input.buttons[7];
  mapped->buttons[BUTTON_INDEX_LEFT_TRIGGER] = AxisToButton(input.axes[4]);
  mapped->buttons[BUTTON_INDEX_RIGHT_TRIGGER] = AxisToButton(input.axes[3]);
  mapped->buttons[BUTTON_INDEX_BACK_SELECT] = NullButton();
  mapped->buttons[BUTTON_INDEX_START] = NullButton();
  mapped->buttons[BUTTON_INDEX_LEFT_THUMBSTICK] = input.buttons[13];
  mapped->buttons[BUTTON_INDEX_RIGHT_THUMBSTICK] = input.buttons[14];
  mapped->buttons[BUTTON_INDEX_META] = input.buttons[12];
  mapped->axes[AXIS_INDEX_RIGHT_STICK_Y] = input.axes[5];
  DpadFromAxis(mapped, input.axes[9]);

  mapped->buttonsLength = BUTTON_INDEX_COUNT;
  mapped->axesLength = AXIS_INDEX_COUNT;
}

void MapperNvShield(const blink::WebGamepad& input, blink::WebGamepad* mapped) {
  *mapped = input;
  mapped->buttons[BUTTON_INDEX_PRIMARY] = input.buttons[0];
  mapped->buttons[BUTTON_INDEX_SECONDARY] = input.buttons[1];
  mapped->buttons[BUTTON_INDEX_TERTIARY] = input.buttons[3];
  mapped->buttons[BUTTON_INDEX_QUATERNARY] = input.buttons[4];
  mapped->buttons[BUTTON_INDEX_LEFT_SHOULDER] = input.buttons[6];
  mapped->buttons[BUTTON_INDEX_RIGHT_SHOULDER] = input.buttons[7];
  mapped->buttons[BUTTON_INDEX_LEFT_TRIGGER] = AxisToButton(input.axes[4]);
  mapped->buttons[BUTTON_INDEX_RIGHT_TRIGGER] = AxisToButton(input.axes[3]);
  mapped->buttons[BUTTON_INDEX_BACK_SELECT] = NullButton();
  mapped->buttons[BUTTON_INDEX_START] = input.buttons[11];
  mapped->buttons[BUTTON_INDEX_LEFT_THUMBSTICK] = input.buttons[13];
  mapped->buttons[BUTTON_INDEX_RIGHT_THUMBSTICK] = input.buttons[14];
  mapped->buttons[BUTTON_INDEX_META] = input.buttons[8];
  mapped->axes[AXIS_INDEX_RIGHT_STICK_Y] = input.axes[5];
  DpadFromAxis(mapped, input.axes[9]);

  mapped->buttonsLength = BUTTON_INDEX_COUNT;
  mapped->axesLength = AXIS_INDEX_COUNT;
}

struct MappingData {
  const char* const vendor_id;
  const char* const product_id;
  GamepadStandardMappingFunction function;
} AvailableMappings[] = {
    // http://www.linux-usb.org/usb.ids
    {"0079", "0011", Mapper2Axes8Keys},          // 2Axes 8Keys Game Pad
    {"046d", "c216", MapperLogitechDualAction},  // Logitech DualAction
    {"054c", "05c4", MapperDualshock4},          // Playstation Dualshock 4
    {"0583", "2060", MapperIBuffalo},            // iBuffalo Classic
    {"0955", "7210", MapperNvShield},        // Nvidia Shield gamepad
    {"18d1", "2c40", MapperADT1},            // ADT-1 Controller
    {"2378", "1008", MapperOnLiveWireless},  // OnLive Controller (Bluetooth)
    {"2378", "100a", MapperOnLiveWireless},  // OnLive Controller (Wired)
};

}  // namespace

GamepadStandardMappingFunction GetGamepadStandardMappingFunction(
    const base::StringPiece& vendor_id,
    const base::StringPiece& product_id) {
  for (size_t i = 0; i < arraysize(AvailableMappings); ++i) {
    MappingData& item = AvailableMappings[i];
    if (vendor_id == item.vendor_id && product_id == item.product_id)
      return item.function;
  }
  return NULL;
}

}  // namespace content