#include "StepRunner.h"
#include "NoteEditor.h"
#include "TypeEditor.h"
#include <QFile>
#include <QDir>
#include <QProcess>
#include <QApplication>
#include <QTimer>
#include <QSettings>
#include <QDateTime>

StepRunner::StepRunner(const QString &title, QObject *parent) :
	QObject(parent),
	m_state(Notes),
	m_title(title),
	m_noteEditor(0),
	m_firstDraft(0),
	m_secondDraft(0)
{
	m_loading = true;

	QTimer *timer = new QTimer(this);
	timer->setInterval(5000);
	timer->setSingleShot(false);
	connect(timer, SIGNAL(timeout()), this, SLOT(saveStates()));
	timer->start();

	m_noteEditor = new NoteEditor(m_title);

	QSettings s;
	const QString key = QString("%1/%2").arg(title);
	if (s.contains(key.arg(QLatin1String("state")))) {
		m_state = static_cast<typeof(m_state)>(s.value(key.arg(QLatin1String("state"))).toInt());
		switch (m_state) {
		case Notes:
			notesStart();
			m_noteEditor->restoreState(key.arg(QLatin1String("Notes/%1")));
			break;
		case FirstDraft:
			notesStart();
			m_noteEditor->restoreState(key.arg(QLatin1String("Notes/%1")));
			m_noteEditor->finish();
			m_firstDraft->restoreState(key.arg(QLatin1String("FirstDraft/%1")));
			break;
		case SecondDraft:
			notesFinished();
			m_firstDraft->restoreState(key.arg(QLatin1String("FirstDraft/%1")), true);
			m_firstDraft->finish();
			m_secondDraft->restoreState(key.arg(QLatin1String("SecondDraft/%1")));
			break;
		case Done:
			QApplication::exit();
		}
	} else
		notesStart();

	m_loading = false;
}
void StepRunner::notesStart()
{
	m_noteEditor = new NoteEditor(m_title);
	connect(m_noteEditor, SIGNAL(finished()), this, SLOT(notesFinished()));
	m_noteEditor->show();
}
void StepRunner::notesFinished()
{
	saveStates();
	m_state = FirstDraft;
	m_firstDraft = new TypeEditor(m_noteEditor->html(), true, m_title);
	connect(m_firstDraft, SIGNAL(finished()), this, SLOT(firstDraftFinished()));
	if (m_noteEditor) {
		m_noteEditor->deleteLater();
		m_noteEditor = 0;
	}
	m_firstDraft->showFullScreen();
	saveStates();
}
void StepRunner::firstDraftFinished()
{
	saveStates();
	m_state = SecondDraft;
	m_secondDraft = new TypeEditor(m_firstDraft->result(), false, m_title);
	connect(m_secondDraft, SIGNAL(finished()), this, SLOT(secondDraftFinished()));
	if (m_firstDraft) {
		m_firstDraft->deleteLater();
		m_firstDraft = 0;
	}
	m_secondDraft->showFullScreen();
	saveStates();
}
void StepRunner::secondDraftFinished()
{
	saveStates();
	m_state = Done;
	QString path = QDir::homePath() + "/Author - " + m_title + ".txt";
	QFile f(path);
	f.open(QIODevice::WriteOnly);
	f.write(m_secondDraft->result().toLocal8Bit());
	f.close();
#if defined(Q_OS_LINUX)
	const QString opener = QLatin1String("xdg-open");
#elif defined(Q_OS_MAC)
	const QString opener = QLatin1String("open");
#elif defined(Q_OS_WIN)
	const QString opener = QLatin1String("notepad");
#endif
	QProcess::startDetached(opener, QStringList() << path);
	if (m_secondDraft) {
		m_secondDraft->deleteLater();
		m_secondDraft = 0;
	}
	saveStates();
	QApplication::exit();
}
StepRunner::~StepRunner()
{
	saveStates();
	if (m_noteEditor)
		m_noteEditor->deleteLater();
	if (m_firstDraft)
		m_firstDraft->deleteLater();
	if (m_secondDraft)
		m_secondDraft->deleteLater();
}
void StepRunner::saveStates()
{
	if (m_loading)
		return;
	QString key = QString("%1/%2").arg(m_title);
	QSettings s;
	s.setValue(key.arg(QLatin1String("state")), m_state);
	s.setValue(key.arg(QLatin1String("lastModified")), QDateTime::currentDateTimeUtc());
	switch (m_state) {
	case Notes:
		if (m_noteEditor)
			m_noteEditor->saveState(key.arg(QLatin1String("Notes/%1")));
		break;
	case FirstDraft:
		if (m_firstDraft)
			m_firstDraft->saveState(key.arg(QLatin1String("FirstDraft/%1")));
		break;
	case SecondDraft:
		if (m_secondDraft)
			m_secondDraft->saveState(key.arg(QLatin1String("SecondDraft/%1")));
		break;
	case Done:
		break;
	}
}