#ifndef BUILDMANAGER_H
#define BUILDMANAGER_H

#include "mostQtHeaders.h"

class ProcessX;

struct PreviewSource {
	QString text;
	int fromLine, toLine;
	bool atCursor;
	PreviewSource(): fromLine(0), toLine(0), atCursor(false) {}
	PreviewSource(const QString &text, int fromLine, int toLine, bool atCursor):
		text(text), fromLine(fromLine), toLine(toLine), atCursor(atCursor) {}
};

enum LatexCompileResult {
	LCR_NORMAL = 0,
	LCR_ERROR,
	LCR_RERUN,
	LCR_RERUN_WITH_BIBLIOGRAPHY
};
Q_DECLARE_METATYPE(LatexCompileResult)


enum RunCommandFlag {
	RCF_SHOW_STDOUT = 1,    //bibliography command (=> show stdout)
	RCF_COMPILES_TEX = 4, //latex command, show the log
	RCF_RERUNNABLE = 8,   //rerun if there are errors (usually RCF_RERUNNABLE is set iff RCF_COMPILES_TEX is set, except for latexmk)
	RCF_RERUN = 16,
	RCF_CHANGE_PDF = 32,    //pdflatex (=> lock pdf)
	RCF_SINGLE_INSTANCE = 64,//viewer (=> start only once)
	RCF_WAITFORFINISHED = 128
};
Q_DECLARE_FLAGS(RunCommandFlags, RunCommandFlag)

struct CommandToRun {
	QString command;
	QString parentCommand;
	RunCommandFlags flags;
	CommandToRun();
	CommandToRun(const QString &cmd);
};

struct ExpandedCommands {
	QString primaryCommand;
	QList<CommandToRun> commands;
};

typedef QString (*GuessCommandLineFunc) ();
struct CommandInfo {
	CommandInfo();
	QString id;
	QString commandLine;

	QString defaultArgs;
	QString displayName;
	bool user;
	bool meta;
	bool rerunCompiler;

	QStringList metaSuggestionList;
	QStringList simpleDescriptionList;

	QString guessCommandLine() const;
	//sets a command (accepts tr("<unknown>"))
	void setCommandLine(const QString &newCmd);

	QString getPrettyCommand() const;
	QString getBaseName() const { return baseName; }
    QString getProgramName() const;
    QString getProgramNameUnquoted() const;
private:
	friend class BuildManager;
	QString baseName;
	GuessCommandLineFunc guessFunc;
	QString deprecatedConfigName;
public:
	static QString getProgramName(const QString &commandLine);
	static QString getProgramNameUnquoted(const QString &commandLine);
};

struct ExpandingOptions {
	ExpandingOptions(const QFileInfo &mainFile, const QFileInfo &currentFile = QFileInfo(), const int currentLine = 0);
	const QFileInfo mainFile;
	const QFileInfo currentFile;
	const int currentLine;
	int nestingDeep;
	bool canceled;
	struct ParameterOverride {
		QList<QPair<QString, QString> > replace;
		QStringList append;
		QStringList remove;
		bool removeAll;
	};
	ParameterOverride override;
};

typedef QHash<QString, CommandInfo> CommandMapping;

class ConfigManagerInterface;

class BuildManager: public QObject
{
	Q_OBJECT

public:
	BuildManager();
	~BuildManager();

	static const QString TXS_CMD_PREFIX;
	static const QString CMD_LATEX, CMD_PDFLATEX, CMD_XELATEX, CMD_LUALATEX, CMD_LATEXMK;
	static const QString CMD_VIEW_DVI, CMD_VIEW_PS, CMD_VIEW_PDF, CMD_VIEW_LOG;
	static const QString CMD_DVIPNG, CMD_DVIPS, CMD_DVIPDF, CMD_PS2PDF, CMD_GS, CMD_MAKEINDEX, CMD_TEXINDY, CMD_MAKEGLOSSARIES, CMD_METAPOST, CMD_ASY, CMD_BIBTEX, CMD_BIBTEX8, CMD_BIBER, CMD_SVN, CMD_SVNADMIN;
	static const QString CMD_COMPILE, CMD_VIEW, CMD_BIBLIOGRAPHY, CMD_INDEX, CMD_GLOSSARY, CMD_QUICK, CMD_RECOMPILE_BIBLIOGRAPHY;
	static const QString CMD_VIEW_PDF_INTERNAL, CMD_INTERNAL_PRE_COMPILE, CMD_CONDITIONALLY_RECOMPILE_BIBLIOGRAPHY;

	static QString chainCommands(const QString &a);
	static QString chainCommands(const QString &a, const QString &b);
	static QString chainCommands(const QString &a, const QString &b, const QString &c);
	static QString chainCommands(const QString &a, const QString &b, const QString &c, const QString &d);

	static QStringList splitOptions(const QString &s);
	static QString findFileInPath(QString fileName);
	static QString replaceEnvironmentVariables(const QString &s);
	static QString replaceEnvironmentVariables(const QString &s, const QHash<QString, QString> &variables, bool compareNamesToUpper);
	static QString resolvePaths(QString paths);
	static QStringList parseExtendedCommandLine(QString str, const QFileInfo &mainFile, const QFileInfo &currentFile = QFileInfo(), int currentLine = 0);
	static QString extractOutputRedirection(const QString &commandLine, QString &stdOut, QString &stdErr);
	ExpandedCommands expandCommandLine(const QString &str, ExpandingOptions &expandingOptions);
	RunCommandFlags getSingleCommandFlags(const QString &command) const;
	bool hasCommandLine(const QString &program);

	void registerOptions(ConfigManagerInterface &cmi);
	void readSettings(QSettings &settings);
	void saveSettings(QSettings &settings);

	void checkLatexConfiguration(bool &noWarnAgain);

	QAction *stopBuildAction()
	{
		return m_stopBuildAction;
	}

public slots:
    bool runCommand(const QString &unparsedCommandLine, const QFileInfo &mainFile, const QFileInfo &currentFile = QFileInfo(), int currentLine = 0, QString *buffer = nullptr, QTextCodec *codecForBuffer = nullptr);
	Q_INVOKABLE void killCurrentProcess();
private:
	bool checkExpandedCommands(const ExpandedCommands &expandedCommands);
    bool runCommandInternal(const ExpandedCommands &expandedCommands, const QFileInfo &mainFile, QString *buffer = nullptr, QTextCodec *codecForBuffer = nullptr);
public:
	//creates a process object with the given command line (after it is changed by an implcit call to parseExtendedCommandLine)
	//ProcessX* newProcess(const QString &unparsedCommandLine, const QString &mainFile, const QString &currentFile, int currentLine=0, bool singleInstance = false);
	//QList<ProcessX*> newProcesses(const QString &unparsedCommandLine, const QString &mainFile, const QString &currentFile, int currentLine=0, bool singleInstance = false);
    Q_INVOKABLE ProcessX *firstProcessOfDirectExpansion(const QString &command, const QFileInfo &mainfile, const QFileInfo &currentFile = QFileInfo(), int currentLine = 0, bool nonstop=false);

	Q_INVOKABLE ProcessX *newProcessInternal(const QString &fullCommandLine, const QFileInfo &mainFile, bool singleInstance = false);
public:
	Q_INVOKABLE bool waitForProcess(ProcessX *p);
	Q_INVOKABLE bool waitingForProcess() const;

	static QString createTemporaryFileName(); //don't forget to remove the file!

    void preview(const QString &preamble, const PreviewSource &source, const QString &masterFile, QTextCodec *outputCodec = nullptr);
	void clearPreviewPreambleCache();

	Q_INVOKABLE bool isCommandDirectlyDefined(const QString &id) const;
	CommandInfo getCommandInfo(const QString &id) const;
	QString editCommandList(const QString &list, const QString &excludeId = "");
	CommandMapping getAllCommands();
	QStringList getCommandsOrder();
	void setAllCommands(const CommandMapping &commands, const QStringList &userOrder);
	QString guessCompilerFromProgramMagicComment(const QString &program);
	QString guessViewerFromProgramMagicComment(const QString &program);

	int maxExpandingNestingDeep;

	int previewCompileTimeOut;

	int deprecatedQuickmode;
	QStringList deprecatedUserToolCommands, deprecatedUserToolNames;
	QStringList userToolOrder, userToolDisplayNames;
	enum Dvi2PngMode { DPM_DVIPNG, DPM_DVIPNG_FOLLOW, DPM_DVIPS_GHOSTSCRIPT, DPM_EMBEDDED_PDF};
	Dvi2PngMode dvi2pngMode;
	enum SaveFilesBeforeCompiling {SFBC_ALWAYS, SFBC_ONLY_CURRENT_OR_NAMED, SFBC_ONLY_NAMED};
	SaveFilesBeforeCompiling saveFilesBeforeCompiling;
	bool previewRemoveBeamer, previewPrecompilePreamble;
private slots:
	void singleInstanceCompleted(int status);
	void preamblePrecompileCompleted(int status);
	void latexPreviewCompleted(int status);
	void dvi2psPreviewCompleted(int status);
	void conversionPreviewCompleted(int status);
    void PreviewLatexCompleted(int status);
	void commandLineRequestedDefault(const QString &cmdId, QString *result, bool *user);
	void runInternalCommandThroughProcessX();
	void emitEndRunningSubCommandFromProcessX(int);
private:
	bool testAndRunInternalCommand(const QString &cmd, const QFileInfo &mainFile);
signals:
	void hideSplash();
	void processNotification(const QString &message);
    void clearLogs();
	void previewAvailable(const QString &filename, const PreviewSource &source);

    void commandLineRequested(const QString &cmdId, QString *result, bool *user = nullptr);
	void runInternalCommand(const QString &cmdId, const QFileInfo &mainfile, const QString &options);

	void latexCompiled(LatexCompileResult *rerun);
	void beginRunningCommands(const QString &commandMain, bool latex, bool pdf, bool asyncPdf);
	void beginRunningSubCommand(ProcessX *p, const QString &commandMain, const QString &subCommand, const RunCommandFlags &flags);
	void endRunningSubCommand(ProcessX *p, const QString &commandMain, const QString &subCommand, const RunCommandFlags &flags);
	void endRunningCommands(const QString &commandMain, bool latex, bool pdf, bool asyncPdf);
private:

	void initDefaultCommandNames();
	void checkOSXElCapitanDeprecatedPaths(QSettings &settings, const QStringList &commands);

    CommandInfo &registerCommand(const QString &id, const QString &basename, const QString &displayName, const QString &args, const QString &oldConfig = "", GuessCommandLineFunc guessFunc = nullptr, bool user = false);
	CommandInfo &registerCommand(const QString &id, const QString &displayname, const QStringList &alternatives, const QString &oldConfig = "", const bool metaCommand = true, const QStringList simpleDescriptions = QStringList());
	Q_INVOKABLE QString getCommandLine(const QString &id, bool *user);
	friend class ProcessX;
	CommandMapping commands;
	QStringList internalCommands, commandSortingsOrder;
	QMap<QString, ProcessX *> runningCommands;
	QPointer<ProcessX> processWaitedFor;

	QStringList latexCommands, rerunnableCommands, pdfCommands, stdoutCommands, viewerCommands;
public:
	static int autoRerunLatex;
	static bool showLogInCaseOfCompileError;
	static bool m_replaceEnvironmentVariables;
	static bool m_interpetCommandDefinitionInMagicComment;
	static bool m_supportShellStyleLiteralQuotes;
	static bool singleViewerInstance;
	static QString autoRerunCommands;
	static QString additionalSearchPaths, additionalLogPaths, additionalPdfPaths;

	QString findFile(const QString &baseName, const QStringList &searchPaths);
	void addPreviewFileName(QString fn)
	{
		if (!previewFileNames.contains(fn))
			previewFileNames.append(fn);
	}

private:
	QAction *m_stopBuildAction;
	QStringList previewFileNames;
	QMap<QString, PreviewSource> previewFileNameToSource;
	QHash<QString, QString> preambleHash;
	void removePreviewFiles(QString elemName);
#ifdef Q_OS_WIN32
	unsigned long int pidInst;
	Q_INVOKABLE bool executeDDE(QString ddePseudoURL);
#endif
};

//#define PROFILE_PROCESSES
Q_DECLARE_METATYPE(ProcessX *)
//this process can handle dde and normal commands
class ProcessX: public QProcess
{
	Q_OBJECT

public:
    ProcessX(BuildManager *parent = nullptr, const QString &assignedCommand = "", const QString &fileToCompile = "");
	static QString reformatShellLiteralQuotes(QString cmd);
	void startCommand();
	bool waitForStarted(int timeOut = 30000);
	const QString &getFile();
	const QString &getCommandLine();
	bool showStdout() const;
	void setShowStdout(bool show);
	QString *getStdoutBuffer();
	void setStdoutBuffer(QString *buffer);
	void setStdoutCodec(QTextCodec *codec);
	bool showStderr() const;
	void setShowStderr(bool show);
	void setOverrideEnvironment(const QStringList &env);
	const QStringList &overrideEnvironment();

	Q_INVOKABLE int exitStatus() const;
	Q_INVOKABLE int exitCode() const;
	Q_INVOKABLE QString readAllStandardOutputStr();
	Q_INVOKABLE QString readAllStandardErrorStr();
	Q_INVOKABLE bool waitForFinished ( int msecs = 30000 );

	bool isRunning() const;
signals:
	void startedX();

	void processNotification(const QString &message);
	void standardOutputRead(const QString &data);
	void standardErrorRead(const QString &data);
private slots:
	void onStarted();
	void onError(QProcess::ProcessError error);
	void onFinished(int error);
#ifdef PROFILE_PROCESSES
	void finished();
#endif
	void readFromStandardOutput();
	void readFromStandardError(bool force = false);
private:
	friend class BuildManager;
	QString cmd;
	QString file;
	bool isStarted, ended, stderrEnabled, stdoutEnabled, stdoutEnabledOverrideOn;
	QString *stdoutBuffer;
	QTextCodec *stdoutCodec;
	QStringList overriddenEnvironment;
	QString subCommandName, subCommandPrimary;
	RunCommandFlags subCommandFlags;
#ifdef PROFILE_PROCESSES
	QTime time;
#endif
};


#endif // BUILDMANAGER_H