// Copyright 1998-2019 Epic Games, Inc. All Rights Reserved.

/* ITargetDevice interface
 *****************************************************************************/
#include "CoreTypes.h"
#include "Containers/UnrealString.h"
#include "Misc/Optional.h"
#include "HAL/PlatformProcess.h"
#include "AndroidTargetDeviceOutput.h"

class FAndroidTargetDevice;
struct FTargetDeviceProcessInfo;
enum class ETargetDeviceFeatures;

template<typename OptionalType> struct TOptional;

inline bool FAndroidTargetDevice::Deploy( const FString& SourceFolder, FString& OutAppId )
{
	int32 ReturnCode = 0;
	//void* RunningProc = NULL;

	// run the packager to create and install the .apk
	// @todo android: install separately?
	FString RepackageCommand(FString(TEXT("AndroidPackager ")) + OutAppId + FString(TEXT(" AndroidARMv7 ")) + FString(TEXT("Debug")));
	FProcHandle RunningProc = FPlatformProcess::CreateProc(TEXT("../DotNET/Android/AndroidPackager"), *RepackageCommand, true, false, false, NULL, 0, TEXT("../DotNET/"), NULL);
	FPlatformProcess::WaitForProc(RunningProc);
	FPlatformProcess::GetProcReturnCode(RunningProc, &ReturnCode);
	FPlatformProcess::CloseProc(RunningProc);

	return 0 == ReturnCode;
}

inline FString FAndroidTargetDevice::GetOperatingSystemName()
{
	if (!AndroidVersionString.IsEmpty())
	{
		return FString::Printf(TEXT("Android %s, API level %d"), *AndroidVersionString, AndroidSDKVersion);
	}
	else
	{
		return TEXT("Android");
	}
}

inline int32 FAndroidTargetDevice::GetProcessSnapshot( TArray<FTargetDeviceProcessInfo>& OutProcessInfos ) 
{
	return 0;
}


inline bool FAndroidTargetDevice::Launch( const FString& AppId, EBuildConfigurations::Type BuildConfiguration, EBuildTargets::Type BuildTarget, const FString& Params, uint32* OutProcessId )
{
	// this isn't used, UAT handles it all
	return false;
}


inline bool FAndroidTargetDevice::Reboot( bool bReconnect )
{
	if (!ExecuteAdbCommand(TEXT("reboot"), NULL, NULL))
	{
		return false;
	}

	return true;
}

inline bool FAndroidTargetDevice::PowerOff( bool Force )
{
	if (!ExecuteAdbCommand(TEXT("reboot --poweroff"), NULL, NULL))
	{
		return false;
	}

	return true;
}

inline FString FAndroidTargetDevice::GetAllDevicesName() const
{
	return FString::Printf(TEXT("All_%s_On_%s"), *(GetTargetPlatform().IniPlatformName()), FPlatformProcess::ComputerName());
}

inline bool FAndroidTargetDevice::Run( const FString& ExecutablePath, const FString& Params, uint32* OutProcessId )
{
	// @todo android: how to run from this?
	return false;
}

// cancel the running application
inline bool FAndroidTargetDevice::TerminateLaunchedProcess(const FString& ProcessIdentifier)
{
	FString AdbCommand = FString::Printf(TEXT("shell am force-stop '%s' -s %s"), *ProcessIdentifier, *SerialNumber);
	return ExecuteAdbCommand(AdbCommand, nullptr, nullptr);
}

inline bool FAndroidTargetDevice::SupportsFeature( ETargetDeviceFeatures Feature ) const
{
	switch (Feature)
	{
	case ETargetDeviceFeatures::PowerOff:
		return true;

	case ETargetDeviceFeatures::PowerOn:
		return false;

	case ETargetDeviceFeatures::Reboot:
		return true;

	default:
		return false;
	}
}


inline bool FAndroidTargetDevice::SupportsSdkVersion( const FString& VersionString ) const
{
	return true;
}


inline bool FAndroidTargetDevice::TerminateProcess( const int64 ProcessId )
{
	return false;
}


inline void FAndroidTargetDevice::SetUserCredentials( const FString& UserName, const FString& UserPassword )
{
}


inline bool FAndroidTargetDevice::GetUserCredentials( FString& OutUserName, FString& OutUserPassword )
{
	return false;
}

inline void FAndroidTargetDevice::ExecuteConsoleCommand(const FString& ExecCommand) const
{
	FString AdbCommand = FString::Printf(TEXT("shell \"am broadcast -a android.intent.action.RUN -e cmd '%s'\""), *ExecCommand);
	ExecuteAdbCommand(AdbCommand, nullptr, nullptr);
}

inline ITargetDeviceOutputPtr FAndroidTargetDevice::CreateDeviceOutputRouter(FOutputDevice* Output) const
{
	FAndroidTargetDeviceOutputPtr DeviceOutputPtr = MakeShareable(new FAndroidTargetDeviceOutput());
	if (DeviceOutputPtr->Init(*this, Output))
	{
		return DeviceOutputPtr;
	}

	return nullptr;
}

/* FAndroidTargetDevice implementation
 *****************************************************************************/

inline bool FAndroidTargetDevice::GetAdbFullFilename(FString& OutFilename)
{
	TOptional<FString> ResultPath;

	// get the SDK binaries folder
	FString AndroidDirectory = FPlatformMisc::GetEnvironmentVariable(TEXT("ANDROID_HOME"));
	if (AndroidDirectory.Len() == 0)
	{
		return false;
	}

#if PLATFORM_WINDOWS
	OutFilename = FString::Printf(TEXT("%s\\platform-tools\\adb.exe"), *AndroidDirectory);
#else
	OutFilename = FString::Printf(TEXT("%s/platform-tools/adb"), *AndroidDirectory);
#endif

	return true;
}

inline bool FAndroidTargetDevice::ExecuteAdbCommand( const FString& CommandLine, FString* OutStdOut, FString* OutStdErr ) const
{
	FString Filename;
	if (!GetAdbFullFilename(Filename))
	{
		return false;
	}
	
	// execute the command
	int32 ReturnCode;
	FString DefaultError;

	// make sure there's a place for error output to go if the caller specified NULL
	if (!OutStdErr)
	{
		OutStdErr = &DefaultError;
	}

	FString CommandLineWithDevice;
	// the devices command should never include a specific device
	if (CommandLine == TEXT("devices"))
	{
		CommandLineWithDevice = CommandLine;
	}
	else
	{
		CommandLineWithDevice = FString::Printf(TEXT("-s %s %s"), *SerialNumber, *CommandLine);
	}

	FPlatformProcess::ExecProcess(*Filename, *CommandLineWithDevice, &ReturnCode, OutStdOut, OutStdErr);

	if (ReturnCode != 0)
	{
		FPlatformMisc::LowLevelOutputDebugStringf(TEXT("The Android SDK command '%s' failed to run. Return code: %d, Error: %s\n"), *CommandLineWithDevice, ReturnCode, **OutStdErr);

		return false;
	}

	return true;
}