/* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
 * Software engineering by Intevation GmbH
 *
 * This file is Free Software under the GNU GPL (v>=2)
 * and comes with ABSOLUTELY NO WARRANTY!
 * See LICENSE.txt for details.
 */
#include "createinstallerdialog.h"
#include <QDebug>
#include <QDir>
#include <QPushButton>
#include <QGroupBox>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QLabel>
#include <QFileDialog>
#include <QSettings>
#include <QMessageBox>

CreateInstallerDialog::CreateInstallerDialog(QMainWindow *parent) :
    QDialog(parent)
{
    QSettings settings;
    setWindowTitle(tr("Create binary installer"));
    setupGUI();
    resize(500, 250);
    mCertFile->setText(settings.value("CodeSignCert", QString()).toString());
    mBinaryFolder->setText(settings.value("LastBinaryFolder", QString()).toString());
    mSaveFile->setText(settings.value("LastBinOutputFolder", QString()).toString());
}

void CreateInstallerDialog::setupGUI()
{
    /* Top level layout / widgets */
    QVBoxLayout *topLayout = new QVBoxLayout;
    QVBoxLayout *headerLayout = new QVBoxLayout;
    QHBoxLayout *headerSubLayout = new QHBoxLayout;
    QHBoxLayout *centerLayout = new QHBoxLayout;
    QHBoxLayout *bottomLayout = new QHBoxLayout;
    QVBoxLayout *labelLayout = new QVBoxLayout;
    QVBoxLayout *fieldLayout = new QVBoxLayout;
    QVBoxLayout *buttonLayout = new QVBoxLayout;

    QLabel *header = new QLabel("<h3>" + tr("Create binary installer") + "</h3>");
    QLabel *description = new QLabel(
        tr("Create and sign a TrustBridge binary installer."));
    headerSubLayout->insertSpacing(0, 40);
    headerSubLayout->addWidget(description);
    QFrame *headerSeparator = new QFrame();
    headerSeparator->setFrameShape(QFrame::HLine);
    headerSeparator->setFrameShadow(QFrame::Sunken);
    headerLayout->addWidget(header);
    headerLayout->addLayout(headerSubLayout);
    headerLayout->addWidget(headerSeparator);
    headerLayout->insertSpacing(4, 10);

    QLabel *archiveLabel = new QLabel(tr("Select binary folder:"));
    QLabel *certLabel = new QLabel(tr("Select code signing certificate:"));
    QLabel *saveLabel = new QLabel(tr("Select output folder:"));
    labelLayout->addWidget(archiveLabel);
    labelLayout->addWidget(certLabel);
    labelLayout->addWidget(saveLabel);

    mBinaryFolder = new QLineEdit();
    mCertFile = new QLineEdit();
    mSaveFile = new QLineEdit();
    fieldLayout->addWidget(mBinaryFolder);
    fieldLayout->addWidget(mCertFile);
    fieldLayout->addWidget(mSaveFile);

    QPushButton *archiveSelect = new QPushButton("...");
    connect(archiveSelect, SIGNAL(clicked()), this, SLOT(openFolderSelect()));
    archiveSelect->setFixedWidth(30);
    QPushButton *certSelect = new QPushButton("...");
    connect(certSelect, SIGNAL(clicked()), this, SLOT(openCertificateSelect()));
    certSelect->setFixedWidth(30);
    QPushButton *saveSelect = new QPushButton("...");
    connect(saveSelect, SIGNAL(clicked()), this, SLOT(openSaveLocation()));
    saveSelect->setFixedWidth(30);
    buttonLayout->addWidget(archiveSelect);
    buttonLayout->addWidget(certSelect);
    buttonLayout->addWidget(saveSelect);

    centerLayout->addLayout(labelLayout);
    centerLayout->addLayout(fieldLayout);
    centerLayout->addLayout(buttonLayout);

    QPushButton *create = new QPushButton(tr("Create installer"));
    connect(create, SIGNAL(clicked()), this, SLOT(createInstaller()));
    QPushButton *cancel = new QPushButton(tr("Cancel"));
    connect(cancel, SIGNAL(clicked()), this, SLOT(close()));
    bottomLayout->insertStretch(0, 10);
    bottomLayout->addWidget(create);
    bottomLayout->addWidget(cancel);

    QFrame *bottomSeparator = new QFrame();
    bottomSeparator->setFrameShape(QFrame::HLine);
    bottomSeparator->setFrameShadow(QFrame::Sunken);

    topLayout->addLayout(headerLayout);
    topLayout->addLayout(centerLayout);
    topLayout->insertStretch(2, 10);
    centerLayout->insertSpacing(3, 10);
    topLayout->addWidget(bottomSeparator);
    topLayout->addLayout(bottomLayout);

    setLayout(topLayout);

    return;
}

void CreateInstallerDialog::openCertificateSelect()
{
    QSettings settings;
    QString certFile = QFileDialog::getOpenFileName(
        this, tr("Select certificate"),
        mCertFile->text().isEmpty() ? QDir::homePath() : mCertFile->text(),
        "*.pem *.der *.crt");
    settings.setValue("CodeSignCert", certFile);
    mCertFile->setText(certFile);
}

void CreateInstallerDialog::openFolderSelect()
{
    QSettings settings;
    QString archiveFolder = QFileDialog::getExistingDirectory(
        this, tr("Select binary folder"),
        mBinaryFolder->text().isEmpty() ? QDir::homePath() : mBinaryFolder->text());
    mBinaryFolder->setText(archiveFolder);
    settings.setValue("LastBinaryFolder", archiveFolder);
}

void CreateInstallerDialog::openSaveLocation()
{
    QSettings settings;
    QString saveFile = QFileDialog::getExistingDirectory(
        this, tr("Select target location"),
        mSaveFile->text().isEmpty() ? QDir::homePath() : mSaveFile->text());
    mSaveFile->setText(saveFile);
    settings.setValue("LastBinOutputFolder", saveFile);
}

void CreateInstallerDialog::showErrorMessage(const QString &msg)
{
    QMessageBox::warning(this, tr("Error!"), msg);
}

void CreateInstallerDialog::createInstaller()
{
    QDir binDir(mBinaryFolder->text());
    if (mBinaryFolder->text().isEmpty() && binDir.exists()) {
        showErrorMessage(tr("Please select an existing input folder."));
    }
    qDebug() << "and now create the installer using:";
    qDebug() << "source archive: " << mBinaryFolder->text();
    qDebug() << "certificate: " << mCertFile->text();
    qDebug() << "target" << mSaveFile->text();
}