/*
 *  Copyright 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#import "UIDevice+RTCDevice.h"

#import <sys/utsname.h>
#include <memory>

@implementation UIDevice (RTCDevice)

+ (RTCDeviceType)deviceType {
  NSDictionary *machineNameToType = @{
    @"iPhone1,1" : @(RTCDeviceTypeIPhone1G),
    @"iPhone1,2" : @(RTCDeviceTypeIPhone3G),
    @"iPhone2,1" : @(RTCDeviceTypeIPhone3GS),
    @"iPhone3,1" : @(RTCDeviceTypeIPhone4),
    @"iPhone3,2" : @(RTCDeviceTypeIPhone4),
    @"iPhone3,3" : @(RTCDeviceTypeIPhone4Verizon),
    @"iPhone4,1" : @(RTCDeviceTypeIPhone4S),
    @"iPhone5,1" : @(RTCDeviceTypeIPhone5GSM),
    @"iPhone5,2" : @(RTCDeviceTypeIPhone5GSM_CDMA),
    @"iPhone5,3" : @(RTCDeviceTypeIPhone5CGSM),
    @"iPhone5,4" : @(RTCDeviceTypeIPhone5CGSM_CDMA),
    @"iPhone6,1" : @(RTCDeviceTypeIPhone5SGSM),
    @"iPhone6,2" : @(RTCDeviceTypeIPhone5SGSM_CDMA),
    @"iPhone7,1" : @(RTCDeviceTypeIPhone6Plus),
    @"iPhone7,2" : @(RTCDeviceTypeIPhone6),
    @"iPhone8,1" : @(RTCDeviceTypeIPhone6S),
    @"iPhone8,2" : @(RTCDeviceTypeIPhone6SPlus),
    @"iPhone8,4" : @(RTCDeviceTypeIPhoneSE),
    @"iPhone9,1" : @(RTCDeviceTypeIPhone7),
    @"iPhone9,2" : @(RTCDeviceTypeIPhone7Plus),
    @"iPhone9,3" : @(RTCDeviceTypeIPhone7),
    @"iPhone9,4" : @(RTCDeviceTypeIPhone7Plus),
    @"iPhone10,1" : @(RTCDeviceTypeIPhone8),
    @"iPhone10,2" : @(RTCDeviceTypeIPhone8Plus),
    @"iPhone10,3" : @(RTCDeviceTypeIPhoneX),
    @"iPhone10,4" : @(RTCDeviceTypeIPhone8),
    @"iPhone10,5" : @(RTCDeviceTypeIPhone8Plus),
    @"iPhone10,6" : @(RTCDeviceTypeIPhoneX),
    @"iPhone11,2" : @(RTCDeviceTypeIPhoneXS),
    @"iPhone11,4" : @(RTCDeviceTypeIPhoneXSMax),
    @"iPhone11,6" : @(RTCDeviceTypeIPhoneXSMax),
    @"iPhone11,8" : @(RTCDeviceTypeIPhoneXR),
    @"iPhone12,1" : @(RTCDeviceTypeIPhone11),
    @"iPhone12,3" : @(RTCDeviceTypeIPhone11Pro),
    @"iPhone12,5" : @(RTCDeviceTypeIPhone11ProMax),
    @"iPhone13,1" : @(RTCDeviceTypeIPhone12Mini),
    @"iPhone13,2" : @(RTCDeviceTypeIPhone12),
    @"iPhone13,3" : @(RTCDeviceTypeIPhone12Pro),
    @"iPhone13,4" : @(RTCDeviceTypeIPhone12ProMax),
    @"iPod1,1" : @(RTCDeviceTypeIPodTouch1G),
    @"iPod2,1" : @(RTCDeviceTypeIPodTouch2G),
    @"iPod3,1" : @(RTCDeviceTypeIPodTouch3G),
    @"iPod4,1" : @(RTCDeviceTypeIPodTouch4G),
    @"iPod5,1" : @(RTCDeviceTypeIPodTouch5G),
    @"iPod7,1" : @(RTCDeviceTypeIPodTouch6G),
    @"iPod9,1" : @(RTCDeviceTypeIPodTouch7G),
    @"iPad1,1" : @(RTCDeviceTypeIPad),
    @"iPad2,1" : @(RTCDeviceTypeIPad2Wifi),
    @"iPad2,2" : @(RTCDeviceTypeIPad2GSM),
    @"iPad2,3" : @(RTCDeviceTypeIPad2CDMA),
    @"iPad2,4" : @(RTCDeviceTypeIPad2Wifi2),
    @"iPad2,5" : @(RTCDeviceTypeIPadMiniWifi),
    @"iPad2,6" : @(RTCDeviceTypeIPadMiniGSM),
    @"iPad2,7" : @(RTCDeviceTypeIPadMiniGSM_CDMA),
    @"iPad3,1" : @(RTCDeviceTypeIPad3Wifi),
    @"iPad3,2" : @(RTCDeviceTypeIPad3GSM_CDMA),
    @"iPad3,3" : @(RTCDeviceTypeIPad3GSM),
    @"iPad3,4" : @(RTCDeviceTypeIPad4Wifi),
    @"iPad3,5" : @(RTCDeviceTypeIPad4GSM),
    @"iPad3,6" : @(RTCDeviceTypeIPad4GSM_CDMA),
    @"iPad4,1" : @(RTCDeviceTypeIPadAirWifi),
    @"iPad4,2" : @(RTCDeviceTypeIPadAirCellular),
    @"iPad4,3" : @(RTCDeviceTypeIPadAirWifiCellular),
    @"iPad4,4" : @(RTCDeviceTypeIPadMini2GWifi),
    @"iPad4,5" : @(RTCDeviceTypeIPadMini2GCellular),
    @"iPad4,6" : @(RTCDeviceTypeIPadMini2GWifiCellular),
    @"iPad4,7" : @(RTCDeviceTypeIPadMini3),
    @"iPad4,8" : @(RTCDeviceTypeIPadMini3),
    @"iPad4,9" : @(RTCDeviceTypeIPadMini3),
    @"iPad5,1" : @(RTCDeviceTypeIPadMini4),
    @"iPad5,2" : @(RTCDeviceTypeIPadMini4),
    @"iPad5,3" : @(RTCDeviceTypeIPadAir2),
    @"iPad5,4" : @(RTCDeviceTypeIPadAir2),
    @"iPad6,3" : @(RTCDeviceTypeIPadPro9Inch),
    @"iPad6,4" : @(RTCDeviceTypeIPadPro9Inch),
    @"iPad6,7" : @(RTCDeviceTypeIPadPro12Inch),
    @"iPad6,8" : @(RTCDeviceTypeIPadPro12Inch),
    @"iPad6,11" : @(RTCDeviceTypeIPad5),
    @"iPad6,12" : @(RTCDeviceTypeIPad5),
    @"iPad7,1" : @(RTCDeviceTypeIPadPro12Inch2),
    @"iPad7,2" : @(RTCDeviceTypeIPadPro12Inch2),
    @"iPad7,3" : @(RTCDeviceTypeIPadPro10Inch),
    @"iPad7,4" : @(RTCDeviceTypeIPadPro10Inch),
    @"iPad7,5" : @(RTCDeviceTypeIPad6),
    @"iPad7,6" : @(RTCDeviceTypeIPad6),
    @"iPad7,11" : @(RTCDeviceTypeIPad7Gen10Inch),
    @"iPad7,12" : @(RTCDeviceTypeIPad7Gen10Inch),
    @"iPad8,1" : @(RTCDeviceTypeIPadPro3Gen11Inch),
    @"iPad8,2" : @(RTCDeviceTypeIPadPro3Gen11Inch),
    @"iPad8,3" : @(RTCDeviceTypeIPadPro3Gen11Inch),
    @"iPad8,4" : @(RTCDeviceTypeIPadPro3Gen11Inch),
    @"iPad8,5" : @(RTCDeviceTypeIPadPro3Gen12Inch),
    @"iPad8,6" : @(RTCDeviceTypeIPadPro3Gen12Inch),
    @"iPad8,7" : @(RTCDeviceTypeIPadPro3Gen12Inch),
    @"iPad8,8" : @(RTCDeviceTypeIPadPro3Gen12Inch),
    @"iPad8,9" : @(RTCDeviceTypeIPadPro4Gen11Inch),
    @"iPad8,10" : @(RTCDeviceTypeIPadPro4Gen11Inch),
    @"iPad8,11" : @(RTCDeviceTypeIPadPro4Gen12Inch),
    @"iPad8,12" : @(RTCDeviceTypeIPadPro4Gen12Inch),
    @"iPad11,1" : @(RTCDeviceTypeIPadMini5Gen),
    @"iPad11,2" : @(RTCDeviceTypeIPadMini5Gen),
    @"iPad11,3" : @(RTCDeviceTypeIPadAir3Gen),
    @"iPad11,4" : @(RTCDeviceTypeIPadAir3Gen),
    @"iPad11,6" : @(RTCDeviceTypeIPad8),
    @"iPad11,7" : @(RTCDeviceTypeIPad8),
    @"iPad13,1" : @(RTCDeviceTypeIPadAir4Gen),
    @"iPad12,2" : @(RTCDeviceTypeIPadAir4Gen),
    @"i386" : @(RTCDeviceTypeSimulatori386),
    @"x86_64" : @(RTCDeviceTypeSimulatorx86_64),
  };

  RTCDeviceType deviceType = RTCDeviceTypeUnknown;
  NSNumber *typeNumber = machineNameToType[[self machineName]];
  if (typeNumber) {
    deviceType = static_cast<RTCDeviceType>(typeNumber.integerValue);
  }
  return deviceType;
}

+ (NSString *)machineName {
  struct utsname systemInfo;
  uname(&systemInfo);
  return [[NSString alloc] initWithCString:systemInfo.machine
                                  encoding:NSUTF8StringEncoding];
}

+ (double)currentDeviceSystemVersion {
  return [self currentDevice].systemVersion.doubleValue;
}

+ (BOOL)isIOS11OrLater {
  return [self currentDeviceSystemVersion] >= 11.0;
}

@end