/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use the contact form at
** http://qt.digia.com/
**
** This file is part of Qt Enterprise Embedded.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** the contact form at http://qt.digia.com/
**
****************************************************************************/

#include "progress_page.h"
#include "actor.h"
#include <QApplication>
#include <QClipboard>
#include <QDebug>
#include <QLabel>
#include <QLayout>
#include <QProgressBar>
#include <QPushButton>
#include <QScrollBar>
#include <QTextEdit>
#include <QTimer>

ProgressPage::ProgressPage(QWidget *parent)
    : QWizardPage(parent)
    , mProgress(new QLabel(this))
    , mActor(0)
    , mFinished(false)
    , mTextEdit(new QTextEdit(this))
    , mToggleDetailsButton(new QPushButton(this))
    , mCopyToClipboardButton(new QPushButton(this))
    , mProgressBar(0)
{
    setTitle(tr("Disk Creation"));
    setSubTitle(tr("Writing the hardware platform image to the disk"));
    setLayout(new QVBoxLayout(this));
    mProgressBar = new QProgressBar(this);
    mProgressBar->setRange(0, 0);
    layout()->addWidget(mProgressBar);
    mProgress->setWordWrap(true);
    mProgress->setText(tr("Preparing the disk device..."));
    layout()->addWidget(mProgress);
    mToggleDetailsButton->setText(tr("Show details"));
    layout()->addWidget(mToggleDetailsButton);
    layout()->addWidget(mTextEdit);
    mCopyToClipboardButton->setText(tr("Copy to clipboard"));
    layout()->addWidget(mCopyToClipboardButton);

    mTextEdit->hide();
    mCopyToClipboardButton->hide();

    connect(mToggleDetailsButton, &QPushButton::clicked, this, &ProgressPage::toggleDetails);
    connect(mCopyToClipboardButton, &QPushButton::clicked, this, &ProgressPage::copyDetailsToClipboard);
}

ProgressPage::~ProgressPage()
{
}

bool ProgressPage::isComplete() const
{
    return mFinished;
}

void ProgressPage::initializePage()
{
    Q_ASSERT(mActor);
    mActor->start();
}

void ProgressPage::progress(const QString &step)
{
    mProgress->setText(step);
}

void ProgressPage::finished()
{
    mFinished = true;
    emit completeChanged();
    wizard()->next(); // progress to next page automatically
}

void ProgressPage::failed(const QString &message)
{
    mFinished = false;
    emit completeChanged();
    showDetails();
    mProgressBar->setEnabled(false);
    mProgressBar->setRange(0, 100);
    mProgressBar->setValue(100);
    mProgressBar->setFormat("");

    // Scroll to bottom
    mTextEdit->verticalScrollBar()->setValue(mTextEdit->verticalScrollBar()->maximum());
    mProgress->setText(message);
}

void ProgressPage::setActor(Actor *actor)
{
    Q_ASSERT(actor);
    mActor = actor;
    connect(actor, &Actor::finished, this, &ProgressPage::finished);
    connect(actor, &Actor::failed, this, &ProgressPage::failed);
    connect(actor, &Actor::details, this, &ProgressPage::addDetails);
    connect(actor, &Actor::errorDetails, this, &ProgressPage::addErrorDetails);
    connect(actor, &Actor::progress, this, &ProgressPage::progress);
}

static void commonDetailReplacements(QByteArray &data)
{
    data.replace(0x08 /* backspace */, ' ');
}

void ProgressPage::addDetails(QByteArray newData)
{
    commonDetailReplacements(newData);
    mTextEdit->insertPlainText(QString::fromLocal8Bit(newData));
}

void ProgressPage::addErrorDetails(QByteArray newData)
{
    if (newData.startsWith('+')) {
          addDetails(newData);
          return;
    }
    commonDetailReplacements(newData);
    QColor c = mTextEdit->textColor();
    mTextEdit->setTextColor(Qt::red);
    mTextEdit->insertPlainText(QString::fromLocal8Bit(newData));
    mTextEdit->setTextColor(c);
}

void ProgressPage::showDetails()
{
    mTextEdit->show();
    mCopyToClipboardButton->show();
    mToggleDetailsButton->setText(tr("Hide details"));
}

void ProgressPage::hideDetails()
{
    mTextEdit->hide();
    mCopyToClipboardButton->hide();
    mToggleDetailsButton->setText(tr("Show details"));
}

void ProgressPage::toggleDetails()
{
    if (mTextEdit->isHidden())
        showDetails();
    else
        hideDetails();
}

void ProgressPage::copyDetailsToClipboard()
{
    QApplication::clipboard()->setText(mTextEdit->toPlainText());
}