/****************************************************************************
 *
 * (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/


#include "QGCFileDialogController.h"
#include "QGCApplication.h"
#include "SettingsManager.h"
#include "AppSettings.h"

#include <QStandardPaths>
#include <QDebug>
#include <QDir>

QGC_LOGGING_CATEGORY(QGCFileDialogControllerLog, "QGCFileDialogControllerLog")

QStringList QGCFileDialogController::getFiles(const QString& directoryPath, const QStringList& nameFilters)
{
    qCDebug(QGCFileDialogControllerLog) << "getFiles" << directoryPath << nameFilters;
    QStringList files;

    QDir fileDir(directoryPath);

    QFileInfoList fileInfoList = fileDir.entryInfoList(nameFilters,  QDir::Files, QDir::Name);

    for (const QFileInfo& fileInfo: fileInfoList) {
        qCDebug(QGCFileDialogControllerLog) << "getFiles found" << fileInfo.fileName();
        files << fileInfo.fileName();
    }

    return files;
}

bool QGCFileDialogController::fileExists(const QString& filename)
{
    return QFile(filename).exists();
}

QString QGCFileDialogController::fullyQualifiedFilename(const QString& directoryPath, const QString& filename, const QStringList& nameFilters)
{
    QString firstFileExtention;

    // Check that the filename has one of the specified file extensions

    bool extensionFound = true;
    if (nameFilters.count()) {
        extensionFound = false;
        for (const QString& nameFilter: nameFilters) {
            if (nameFilter.startsWith("*.")) {
                QString fileExtension = nameFilter.right(nameFilter.length() - 2);
                if (fileExtension != "*") {
                    if (firstFileExtention.isEmpty()) {
                        firstFileExtention = fileExtension;
                    }
                    if (filename.endsWith(fileExtension)) {
                        extensionFound = true;
                        break;
                    }
                }
            } else if (nameFilter != "*") {
                qCWarning(QGCFileDialogControllerLog) << "unsupported name filter format" << nameFilter;
            }
        }
    }

    // Add the extension if it is missing
    QString filenameWithExtension = filename;
    if (!extensionFound) {
        filenameWithExtension = QStringLiteral("%1.%2").arg(filename).arg(firstFileExtention);
    }

    return directoryPath + QStringLiteral("/") + filenameWithExtension;
}

void QGCFileDialogController::deleteFile(const QString& filename)
{
    QFile::remove(filename);
}

QString QGCFileDialogController::fullFolderPathToShortMobilePath(const QString& fullFolderPath)
{
#ifdef __mobile__
    QString defaultSavePath = qgcApp()->toolbox()->settingsManager()->appSettings()->savePath()->rawValueString();
    if (fullFolderPath.startsWith(defaultSavePath)) {
        int lastDirSepIndex = fullFolderPath.lastIndexOf(QStringLiteral("/"));
        return qgcApp()->applicationName() + QStringLiteral("/") + fullFolderPath.right(fullFolderPath.length() - lastDirSepIndex);
    } else {
        return fullFolderPath;
    }
#else
    qWarning() << "QGCFileDialogController::fullFolderPathToShortMobilePath should only be used in mobile builds";
    return fullFolderPath;
#endif
}