core/log: add filesystem logger

src/core/paths.cpp

@@ -0,0 +1,91 @@
+#include "paths.hpp"
+#include <utility>
+
+#include <qdatetime.h>
+#include <qdir.h>
+#include <qlogging.h>
+#include <qloggingcategory.h>
+#include <qstandardpaths.h>
+#include <qtenvironmentvariables.h>
+#include <unistd.h>
+
+Q_LOGGING_CATEGORY(logPaths, "quickshell.paths", QtWarningMsg);
+
+QsPaths* QsPaths::instance() {
+	static auto* instance = new QsPaths(); // NOLINT
+	return instance;
+}
+
+void QsPaths::init(QString shellId) { QsPaths::instance()->shellId = std::move(shellId); }
+
+QDir* QsPaths::cacheDir() {
+	if (this->cacheState == DirState::Unknown) {
+		auto dir = QDir(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
+		dir = QDir(dir.filePath("quickshell"));
+		dir = QDir(dir.filePath(this->shellId));
+		this->mCacheDir = dir;
+
+		qCDebug(logPaths) << "Initialized cache path:" << dir.path();
+
+		if (!dir.mkpath(".")) {
+			qCCritical(logPaths) << "Cannot create cache directory at" << dir.path();
+
+			this->cacheState = DirState::Failed;
+		}
+	}
+
+	if (this->cacheState == DirState::Failed) return nullptr;
+	else return &this->mCacheDir;
+}
+
+QDir* QsPaths::runDir() {
+	if (this->runState == DirState::Unknown) {
+		auto runtimeDir = qEnvironmentVariable("XDG_RUNTIME_DIR");
+		if (runtimeDir.isEmpty()) {
+			runtimeDir = QString("/run/user/$1").arg(getuid());
+			qCInfo(logPaths) << "XDG_RUNTIME_DIR was not set, defaulting to" << runtimeDir;
+		}
+
+		auto dir = QDir(runtimeDir);
+		dir = QDir(dir.filePath("quickshell"));
+		dir = QDir(dir.filePath(this->shellId));
+		this->mRunDir = dir;
+
+		qCDebug(logPaths) << "Initialized runtime path:" << dir.path();
+
+		if (!dir.mkpath(".")) {
+			qCCritical(logPaths) << "Cannot create runtime directory at" << dir.path();
+
+			this->runState = DirState::Failed;
+		}
+	}
+
+	if (this->runState == DirState::Failed) return nullptr;
+	else return &this->mRunDir;
+}
+
+QDir* QsPaths::instanceRunDir() {
+	if (this->instanceRunState == DirState::Unknown) {
+		auto* runtimeDir = this->runDir();
+
+		if (!runtimeDir) {
+			qCCritical(logPaths) << "Cannot create instance runtime directory as main runtim directory "
+			                        "could not be created.";
+			this->instanceRunState = DirState::Failed;
+		} else {
+			this->mInstanceRunDir =
+			    runtimeDir->filePath(QString("run-%1").arg(QDateTime::currentMSecsSinceEpoch()));
+
+			qCDebug(logPaths) << "Initialized instance runtime path:" << this->mInstanceRunDir.path();
+
+			if (!this->mInstanceRunDir.mkpath(".")) {
+				qCCritical(logPaths) << "Cannot create instance runtime directory at"
+				                     << this->mInstanceRunDir.path();
+				this->instanceRunState = DirState::Failed;
+			}
+		}
+	}
+
+	if (this->runState == DirState::Failed) return nullptr;
+	else return &this->mInstanceRunDir;
+}