downloaded files now stored with squawk:// prefix, that way I can move downloads folder without messing up the database

shared/CMakeLists.txt

@@ -16,4 +16,6 @@ target_sources(squawk PRIVATE
   utils.h
   vcard.cpp
   vcard.h
+  pathcheck.cpp
+  pathcheck.h
   )

shared/pathcheck.cpp

@@ -0,0 +1,55 @@
+#include "pathcheck.h"
+
+QRegularExpression squawk("^squawk:\\/\\/");
+QString Shared::downloadsPathCheck()
+{
+    QSettings settings;
+    QVariant dpv = settings.value("downloadsPath");
+    QString path;
+    if (!dpv.isValid()) {
+        path = defaultDownloadsPath();
+        qDebug() << "no downloadsPath variable in config, using default" << path;
+        path = getAbsoluteWritablePath(path);
+        return path;
+    } else {
+        path = dpv.toString();
+        path = getAbsoluteWritablePath(path);
+        if (path.size() == 0) {
+            path = defaultDownloadsPath();
+            qDebug() << "falling back to the default downloads path" << path;
+            path = getAbsoluteWritablePath(path);
+        }
+        return path;
+    }
+}
+
+QString Shared::defaultDownloadsPath()
+{
+    return QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) + "/" + QApplication::applicationName();
+}
+
+QString Shared::getAbsoluteWritablePath(const QString& path)
+{
+    QDir location(path);
+    if (!location.exists()) {
+        bool res = location.mkpath(location.absolutePath());
+        if (!res) {
+            qDebug() << "couldn't create directory" << path;
+            return "";
+        }
+    }
+    QFileInfo info(location.absolutePath());
+    if (info.isWritable()) {
+        return location.absolutePath();
+    } else {
+        qDebug() << "directory" << path << "is not writable";
+        return "";
+    }
+}
+
+QString Shared::resolvePath(QString path)
+{
+    QSettings settings;
+    QVariant dpv = settings.value("downloadsPath");
+    return path.replace(squawk, dpv.toString() + "/");
+}

shared/pathcheck.h

@@ -0,0 +1,23 @@
+#ifndef PATHCHECK_H
+#define PATHCHECK_H
+
+#include <QString>
+#include <QStandardPaths>
+#include <QSettings>
+#include <QApplication>
+#include <QDir>
+#include <QFileInfo>
+#include <QDebug>
+#include <QRegularExpression>
+
+namespace Shared {
+
+QString downloadsPathCheck();
+QString defaultDownloadsPath();
+
+QString getAbsoluteWritablePath(const QString& path);
+QString resolvePath(QString path);
+
+}
+
+#endif // PATHCHECK_H