#include "desktop_integration.h"
#include "debug_config.h"
#include <QDir>
#include <QSaveFile>
#include <QStandardPaths>

bool registerDesktopApplication(const QString& executable) {
#ifdef Q_OS_LINUX
    const QString relative = QStringLiteral("applications/org.utun.vibechat.desktop");
    if (!QStandardPaths::locate(QStandardPaths::GenericDataLocation, relative).isEmpty()) return true;
    const QString root = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation);
    const QString path = root + '/' + relative;
    if (root.isEmpty() || !QDir().mkpath(root + "/applications")) {
        DEBUG_WARN(DEBUG_CATEGORY_GENERAL, "Desktop registration: cannot create applications directory in %s", qPrintable(root));
        return false;
    }
    // Exec сначала разбирается как desktop string, затем как командная строка; shell не используется.
    QString command;
    for (QChar c : executable) {
        if (c == '%') command += "%%";
        else { if (c == '\\' || c == '"' || c == '$' || c == '`') command += '\\'; command += c; }
    }
    command = '"' + command + '"';
    command.replace("\\", "\\\\"); command.replace('\n', "\\n"); command.replace('\r', "\\r"); command.replace('\t', "\\t");
    // GLib проверяет executable до раскрытия %%; env оставляет путь аргументом и корректно обрабатывает '%' в имени.
    const QByteArray content = QString("[Desktop Entry]\nType=Application\nName=VibeChat\nExec=/usr/bin/env %1\n"
        "Icon=applications-internet\nTerminal=false\nCategories=Network;InstantMessaging;\n").arg(command).toUtf8();
    QSaveFile file(path);
    if (!file.open(QIODevice::WriteOnly) || file.write(content) != content.size() || !file.commit()) {
        DEBUG_WARN(DEBUG_CATEGORY_GENERAL, "Desktop registration failed path=%s: %s", qPrintable(path), qPrintable(file.errorString()));
        return false;
    }
    DEBUG_INFO(DEBUG_CATEGORY_GENERAL, "Desktop application registered path=%s", qPrintable(path));
#else
    Q_UNUSED(executable);
#endif
    return true;
}