refactor: debug count and popup (#4921)

* Moved implementation of the methods to the `cpp` file.
* Added `DebugCount::Flag(s)` and `DebugCount::configure(name, flags)`.
* Moved from `QMap` to `std::map` (order is important here).
* Used `QStringBuilder` for concatenations.
* Used `QLocale` for formatting (adds separators).
* Added `DebugCount::Flag::DataSize` for data sizes in bytes (and fixed language to English).
* Used `DataSize` for image sizes (maybe this should be moved somewhere else?).
* Added copy button to popup.
* Fixed Image usage reporting being eight times too large (could be another PR, but honestly it's four characters).

src/util/DebugCount.cpp

@@ -1,7 +1,114 @@
-#include "DebugCount.hpp"
+#include "util/DebugCount.hpp"
+
+#include "common/UniqueAccess.hpp"
+
+#include <QLocale>
+#include <QStringBuilder>
+
+#include <map>
+
+namespace {
+
+using namespace chatterino;
+
+struct Count {
+    int64_t value = 0;
+    DebugCount::Flags flags = DebugCount::Flag::None;
+};
+
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+UniqueAccess<std::map<QString, Count>> COUNTS;
+
+}  // namespace
 
 namespace chatterino {
 
-UniqueAccess<QMap<QString, int64_t>> DebugCount::counts_;
+void DebugCount::configure(const QString &name, Flags flags)
+{
+    auto counts = COUNTS.access();
+
+    auto it = counts->find(name);
+    if (it == counts->end())
+    {
+        counts->emplace(name, Count{.flags = flags});
+    }
+    else
+    {
+        it->second.flags = flags;
+    }
+}
+
+void DebugCount::set(const QString &name, const int64_t &amount)
+{
+    auto counts = COUNTS.access();
+
+    auto it = counts->find(name);
+    if (it == counts->end())
+    {
+        counts->emplace(name, Count{amount});
+    }
+    else
+    {
+        it->second.value = amount;
+    }
+}
+
+void DebugCount::increase(const QString &name, const int64_t &amount)
+{
+    auto counts = COUNTS.access();
+
+    auto it = counts->find(name);
+    if (it == counts->end())
+    {
+        counts->emplace(name, Count{amount});
+    }
+    else
+    {
+        it->second.value += amount;
+    }
+}
+
+void DebugCount::decrease(const QString &name, const int64_t &amount)
+{
+    auto counts = COUNTS.access();
+
+    auto it = counts->find(name);
+    if (it == counts->end())
+    {
+        counts->emplace(name, Count{-amount});
+    }
+    else
+    {
+        it->second.value -= amount;
+    }
+}
+
+QString DebugCount::getDebugText()
+{
+#if QT_VERSION > QT_VERSION_CHECK(5, 13, 0)
+    static const QLocale locale(QLocale::English);
+#else
+    static QLocale locale(QLocale::English);
+#endif
+
+    auto counts = COUNTS.access();
+
+    QString text;
+    for (const auto &[key, count] : *counts)
+    {
+        QString formatted;
+        if (count.flags.has(Flag::DataSize))
+        {
+            formatted = locale.formattedDataSize(count.value);
+        }
+        else
+        {
+            formatted = locale.toString(static_cast<qlonglong>(count.value));
+        }
+
+        text += key % ": " % formatted % '\n';
+    }
+    return text;
+}
 
 }  // namespace chatterino