// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.

#pragma once

#include "IDesktopPlatform.h"
#include "Json.h"
#include "UProjectInfo.h"

class FDesktopPlatformBase : public IDesktopPlatform
{
public:
	FDesktopPlatformBase();

	// IDesktopPlatform Implementation
	virtual FString GetEngineDescription(const FString& Identifier) override;
	virtual FString GetCurrentEngineIdentifier() override;

	virtual void EnumerateLauncherEngineInstallations(TMap<FString, FString> &OutInstallations) override;
	virtual void EnumerateLauncherSampleInstallations(TArray<FString> &OutInstallations) override;
	virtual void EnumerateLauncherSampleProjects(TArray<FString> &OutFileNames) override;
	virtual bool GetEngineRootDirFromIdentifier(const FString &Identifier, FString &OutRootDir) override;
	virtual bool GetEngineIdentifierFromRootDir(const FString &RootDir, FString &OutIdentifier) override;

	virtual bool GetDefaultEngineIdentifier(FString &OutIdentifier) override;
	virtual bool GetDefaultEngineRootDir(FString &OutRootDir) override;
	virtual bool IsPreferredEngineIdentifier(const FString &Identifier, const FString &OtherIdentifier);

	virtual bool IsStockEngineRelease(const FString &Identifier) override;
	virtual bool IsSourceDistribution(const FString &RootDir) override;
	virtual bool IsPerforceBuild(const FString &RootDir) override;
	virtual bool IsValidRootDirectory(const FString &RootDir) override;

	virtual bool SetEngineIdentifierForProject(const FString &ProjectFileName, const FString &Identifier) override;
	virtual bool GetEngineIdentifierForProject(const FString &ProjectFileName, FString &OutIdentifier) override;

	virtual bool OpenProject(const FString& ProjectFileName) override;

	virtual bool CleanGameProject(const FString& ProjectDir, FString& OutFailPath, FFeedbackContext* Warn) override;
	virtual bool CompileGameProject(const FString& RootDir, const FString& ProjectFileName, FFeedbackContext* Warn) override;
	virtual bool GenerateProjectFiles(const FString& RootDir, const FString& ProjectFileName, FFeedbackContext* Warn) override;
	virtual bool IsUnrealBuildToolAvailable() override;
	virtual bool InvokeUnrealBuildToolSync(const FString& InCmdLineParams, FOutputDevice &Ar, bool bSkipBuildUBT, int32& OutReturnCode, FString& OutProcOutput) override;
	virtual FProcHandle InvokeUnrealBuildToolAsync(const FString& InCmdLineParams, FOutputDevice &Ar, void*& OutReadPipe, void*& OutWritePipe, bool bSkipBuildUBT = false) override;

	virtual bool GetSolutionPath(FString& OutSolutionPath) override;

	virtual bool EnumerateProjectsKnownByEngine(const FString &Identifier, bool bIncludeNativeProjects, TArray<FString> &OutProjectFileNames) override;
	virtual FString GetDefaultProjectCreationPath() override;

private:
	FString CurrentEngineIdentifier;
	FDateTime LauncherInstallationTimestamp;
	TMap<FString, FString> LauncherInstallationList;
	TMap<FString, FUProjectDictionary> CachedProjectDictionaries;

	void ReadLauncherInstallationList();
	void CheckForLauncherEngineInstallation(const FString &AppId, const FString &Identifier, TMap<FString, FString> &OutInstallations);
	int32 ParseReleaseVersion(const FString &Version);

	TSharedPtr<FJsonObject> LoadProjectFile(const FString &FileName);
	bool SaveProjectFile(const FString &FileName, TSharedPtr<FJsonObject> Object);

	const FUProjectDictionary &GetCachedProjectDictionary(const FString& RootDir);

	void GetProjectBuildProducts(const FString& ProjectFileName, TArray<FString> &OutFileNames, TArray<FString> &OutDirectoryNames);

	FString GetUnrealBuildToolSourceCodePath() const;
	bool BuildUnrealBuildTool(FOutputDevice &Ar);

protected:

	FString GetUnrealBuildToolExecutableFilename() const;	
};