Remove NVIDIA stuff

Conversion from power percentage to PWM value didn't take into floating
point arithmetic into account
Make log messages more helpful, add handling for fan stopping completely

.gitignore

@@ -1,3 +1,8 @@
 oot/
 compile_commands.json
 .cache/
+pkg/
+rel_oot/
+./src
+*.pkg.tar.zst
+*.tar.gz

LICENSE

@@ -0,0 +1,674 @@
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

PKGBUILD

@@ -0,0 +1,19 @@
+pkgname=fantasize
+pkgver=0.2.0
+pkgrel=1
+pkgdesc='C++ fan control for Linux'
+url='https://github.com/Tabascl/fantasize.git'
+source=("$pkgname-$pkgver.tar.gz::https://github.com/Tabascl/fantasize/archive/refs/tags/v$pkgver.tar.gz")
+arch=('x86_64')
+license=('GPL3')
+makedepends=('git' 'cmake' 'nlohmann-json' 'boost')
+sha256sums=('SKIP')
+
+build() {
+    cmake -S "$pkgname-$pkgver/app" -B build -DCMAKE_BUILD_TYPE=Release
+    cmake --build build
+}
+
+package() {
+    cmake --install build --prefix "$pkgdir/" --verbose
+}

README.md

@@ -0,0 +1,3 @@
+# Fantasize
+
+[Github Mirror Repo](https://github.com/Tabascl/fantasize)

app/CMakeLists.txt

@@ -1,18 +1,39 @@
 cmake_minimum_required(VERSION 3.0)
 
-project(fantasize)
+project(fantasize VERSION 0.1.8)
 
-set(CMAKE_BUILD_TYPE Debug)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
+find_package(nlohmann_json 3.11.2 REQUIRED)
+find_package(Boost 1.74 COMPONENTS program_options log log_setup date_time REQUIRED)
 
-add_executable(app
+add_executable(${PROJECT_NAME}
   src/main.cxx
-  src/nvidia.cxx
-  src/pwm.cxx
+  src/sensor/LMSensorsFacade.cxx
+#  src/sensor/GPUSensorsFacade.cxx
+  src/sensor/Sensor.cxx
+#  src/sensor/NvidiaSensor.cxx
+  src/sensor/LMSensor.cxx
+  src/pwm/PWMControl.cxx
+  src/pwm/PWMControlFacade.cxx
+  src/fan/HwmonFan.cxx
+  src/fan/FanCurve.cxx
+  src/fan/FanLabeler.cxx
+  src/fan/Aggregators.cxx
+  src/FanGenerator.cxx
+  src/Serializer.cxx
+  src/sensor/SensorManager.cxx
+  src/Controller.cxx
+  src/Settings.cxx
+  src/App.cxx
 )
 
-set_property(TARGET app PROPERTY CXX_STANDARD 17)
+set_property(TARGET ${PROJECT_NAME} PROPERTY CXX_STANDARD 20)
 
-target_include_directories(app PUBLIC include /opt/cuda)
-target_link_libraries(app PUBLIC sensors nvidia-ml)
+# target_include_directories(${PROJECT_NAME} PUBLIC include /opt/cuda)
+target_include_directories(${PROJECT_NAME} PUBLIC include)
+# target_link_libraries(${PROJECT_NAME} PUBLIC sensors nvidia-ml nlohmann_json::nlohmann_json tbb ${Boost_LIBRARIES})
+target_link_libraries(${PROJECT_NAME} PUBLIC sensors nlohmann_json::nlohmann_json tbb ${Boost_LIBRARIES})
+
+install(TARGETS ${PROJECT_NAME} DESTINATION usr/local/bin)
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/unit/fantasize.service DESTINATION usr/lib/systemd/system)

app/include/App.h

@@ -0,0 +1,36 @@
+#ifndef APP_H_
+#define APP_H_
+
+#include <memory>
+
+#include <Controller.h>
+#include <FanGenerator.h>
+#include <Serializer.h>
+#include <fan/FanLabeler.h>
+#include <pwm/PWMControlFacade.h>
+#include <sensor/SensorManager.h>
+
+class App {
+public:
+  void Init();
+
+  void InitialSetup();
+  void NormalOperation();
+
+  void Shutdown();
+
+private:
+  SensorManager mSensorManager;
+  Serializer mSerializer;
+  PWMControlFacade mPWMControlFacade;
+  FanLabeler mFanLabeler;
+  FanGenerator mFanGenerator;
+
+  std::shared_ptr<Settings> mSettings;
+
+  std::unique_ptr<Controller> mController;
+
+  std::vector<std::shared_ptr<Fan>> mFans;
+};
+
+#endif // APP_H_

app/include/ConfigManager.h

@@ -0,0 +1,28 @@
+#ifndef CONFIGMANAGER_H_
+#define CONFIGMANAGER_H_
+
+#include <memory>
+#include <vector>
+
+#include <nlohmann/json.hpp>
+
+#include <fan/Fan.h>
+
+#define CONFIG_FILE "/etc/fantasize/config.json"
+
+using json = nlohmann::json;
+
+class ConfigManager {
+public:
+  ConfigManager();
+  ~ConfigManager();
+
+  void WriteConfig();
+
+  void SaveFans(std::vector<std::shared_ptr<Fan>> fans);
+
+private:
+  json mConfig;
+};
+
+#endif // CONFIGMANAGER_H_

app/include/Controller.h

@@ -0,0 +1,31 @@
+#ifndef CONTROLLER_H_
+#define CONTROLLER_H_
+
+#include <memory>
+#include <thread>
+#include <vector>
+
+#include <Settings.h>
+#include <fan/FanCurve.h>
+
+class Controller {
+public:
+  Controller(std::shared_ptr<Settings> settings,
+             std::vector<std::shared_ptr<FanCurve>> curves);
+  ~Controller();
+
+  void StartFanControlLoop();
+  void StopFanControlLoop();
+
+private:
+  void Loop();
+
+  int mTimeout;
+
+  std::vector<std::shared_ptr<FanCurve>> mFanCurves;
+  std::atomic<bool> mRun;
+
+  std::unique_ptr<std::thread> mWorker;
+};
+
+#endif // CONTROLLER_H_

app/include/FanGenerator.h

@@ -0,0 +1,23 @@
+#ifndef MAPPING_H_
+#define MAPPING_H_
+
+#include <memory>
+#include <vector>
+
+#include <fan/Fan.h>
+#include <pwm/PWMControl.h>
+#include <sensor/Sensor.h>
+
+class FanGenerator {
+public:
+  std::vector<std::shared_ptr<Fan>>
+  FindFans(std::vector<std::shared_ptr<Sensor>> rpmSensors,
+           std::vector<std::shared_ptr<PWMControl>> pwmControls);
+
+private:
+  template <class Printable>
+  void print(std::string listLabel,
+             std::vector<std::shared_ptr<Printable>> list);
+};
+
+#endif // MAPPING_H_

app/include/Printable.h

@@ -0,0 +1,11 @@
+#ifndef PRINTABLE_H_
+#define PRINTABLE_H_
+
+#include <string>
+
+class Printable {
+public:
+  virtual const std::string toString() const = 0;
+};
+
+#endif // PRINTABLE_H_

app/include/Serializable.h

@@ -0,0 +1,13 @@
+#ifndef SERIALIZABLE_H_
+#define SERIALIZABLE_H_
+
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+class Serializable {
+public:
+  virtual json toJson() const = 0;
+};
+
+#endif // SERIALIZABLE_H_

app/include/Serializer.h

@@ -0,0 +1,38 @@
+#ifndef SERIALIZER_H_
+#define SERIALIZER_H_
+
+#include <memory>
+#include <vector>
+
+#include <nlohmann/json.hpp>
+
+#include <Settings.h>
+#include <fan/Aggregators.h>
+#include <fan/Fan.h>
+#include <fan/FanCurve.h>
+#include <sensor/Sensor.h>
+
+#define SERIALIZATION_DIR "/etc/fantasize"
+#define FANS_JSON_FILENAME "fans.json"
+
+using json = nlohmann::json;
+
+class Serializer
+{
+public:
+  Serializer();
+  void SerializeFans(std::vector<std::shared_ptr<Fan>> fans);
+  std::vector<std::shared_ptr<Fan>> DeserializeFans(
+    std::vector<std::shared_ptr<Sensor>> availableSensors);
+  std::vector<std::shared_ptr<FanCurve>> DeserializeFanCurves(
+    std::vector<std::shared_ptr<Sensor>> availableSensors,
+    std::vector<std::shared_ptr<Fan>> availableFans);
+  std::shared_ptr<Settings> DeserializeSettings();
+
+private:
+  void WriteJson(json o);
+  json ReadJson();
+  std::unique_ptr<Aggregator> aggregatorFromString(std::string str) const;
+};
+
+#endif // SERIALIZER_H_

app/include/Settings.h

@@ -0,0 +1,17 @@
+#ifndef SETTINGS_H_
+#define SETTINGS_H_
+
+#define FREQUENCY_DEFAULT 1
+
+class Settings {
+public:
+  Settings(int frequency);
+
+  int Frequency() const;
+
+private:
+  void LogSettings();
+  int mFrequency;
+};
+
+#endif // SETTINGS_H_

app/include/fan/Aggregators.h

@@ -0,0 +1,27 @@
+#ifndef AGGREGATORS_H_
+#define AGGREGATORS_H_
+
+#include <sensor/Sensor.h>
+
+class Aggregator
+{
+public:
+  virtual int aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const = 0;
+  virtual const std::string toString() const = 0;
+};
+
+class AverageAggregator : public Aggregator
+{
+public:
+  int aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const override;
+  const std::string toString() const override;
+};
+
+class MaxAggregator : public Aggregator
+{
+public:
+  int aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const override;
+  const std::string toString() const override;
+};
+
+#endif // AGGERGATORS_H_

app/include/fan/Fan.h

@@ -0,0 +1,24 @@
+#ifndef FAN_H_
+#define FAN_H_
+
+#include <Printable.h>
+#include <Serializable.h>
+
+class Fan : public Serializable, public Printable {
+public:
+  virtual void PWM(int percent) = 0;
+  virtual int RPM() = 0;
+
+  virtual void Label(std::string label) = 0;
+
+  virtual void MinPWM(int value) = 0;
+  virtual int MinPWM() = 0;
+
+  virtual void StartPWM(int value) = 0;
+  virtual int StartPWM() = 0;
+
+  virtual void FindPWMLimits() = 0;
+  virtual void AdjustPWMLimits() = 0;
+};
+
+#endif // FAN_H_

app/include/fan/FanCurve.h

@@ -0,0 +1,37 @@
+#ifndef FANCURVE_H_
+#define FANCURVE_H_
+
+#include <memory>
+#include <vector>
+
+#include <fan/Aggregators.h>
+#include <fan/HwmonFan.h>
+#include <sensor/Sensor.h>
+
+struct FanStep
+{
+  int Temp;
+  int Percent;
+};
+
+class FanCurve
+{
+public:
+  FanCurve(std::vector<FanStep> steps,
+           std::vector<std::shared_ptr<Sensor>> sensors,
+           std::vector<std::shared_ptr<Fan>> fans,
+           std::unique_ptr<Aggregator> aggregator);
+
+  void DoFanControl();
+
+private:
+  int AggregateTemperature();
+  void PrintInfo();
+
+  std::vector<FanStep> mSteps;
+  std::vector<std::shared_ptr<Sensor>> mTempSensors;
+  std::vector<std::shared_ptr<Fan>> mFans;
+  std::unique_ptr<Aggregator> mAggregator;
+};
+
+#endif // FANCURVE_H_

app/include/fan/FanLabeler.h

@@ -0,0 +1,14 @@
+#ifndef FANLABELER_H_
+#define FANLABELER_H_
+
+#include <memory>
+#include <vector>
+
+#include <fan/Fan.h>
+
+class FanLabeler {
+public:
+  void RunFanLabelInteraction(std::vector<std::shared_ptr<Fan>> fans);
+};
+
+#endif // FANLABELER_H_

app/include/fan/HwmonFan.h

@@ -0,0 +1,44 @@
+#ifndef HWMONFAN_H_
+#define HWMONFAN_H_
+
+#include <chrono>
+#include <memory>
+
+#include <fan/Fan.h>
+#include <pwm/PWMControl.h>
+#include <sensor/Sensor.h>
+
+class HwmonFan : public Fan {
+public:
+  HwmonFan(std::shared_ptr<PWMControl> pwmControl,
+           std::shared_ptr<Sensor> rpmSensor);
+
+  void PWM(int percent) override;
+  int RPM() override;
+
+  void Label(std::string label) override;
+
+  void MinPWM(int value) override;
+  int MinPWM() override;
+
+  void StartPWM(int value) override;
+  int StartPWM() override;
+
+  void FindPWMLimits() override;
+  void AdjustPWMLimits() override;
+
+  json toJson() const override;
+
+  const std::string toString() const override;
+
+private:
+  std::shared_ptr<PWMControl> mPWMControl;
+  std::shared_ptr<Sensor> mRpmSensor;
+  std::string mLabel;
+
+  int mMinPWM;
+  int mStartPWM;
+  std::chrono::time_point<std::chrono::steady_clock> mLastAdjustmentTime;
+};
+
+#endif // HWMONFAN_H_

app/include/nvidia.h

@@ -1,11 +0,0 @@
-#ifndef NVIDIA_H_
-#define NVIDIA_H_
-
-class Nvidia {
-public:
-  Nvidia();
-  ~Nvidia();
-  double get_gpu_temperature();
-};
-
-#endif // NVIDIA_H_

app/include/pwm.h

@@ -1,30 +0,0 @@
-#ifndef PWM_H_
-#define PWM_H_
-
-#include <string>
-#include <unordered_map>
-
-typedef struct {
-  std::string control;
-  std::string enable;
-  std::string mode;
-} PWM_CONTROL;
-
-typedef enum { FULL_SPEED = 0, MANUAL_CONTROL, AUTOMATIC } PWM_ENABLE;
-typedef enum { DC = 0, PWM } PWM_MODE;
-
-class PWM {
-public:
-  PWM();
-  void dumpValues();
-
-  void setEnable(PWM_CONTROL control, PWM_ENABLE value);
-  void setMode(PWM_CONTROL control, PWM_MODE mode);
-  void setValuePwm(PWM_CONTROL control, int pwm);
-  void setValuePercent(PWM_CONTROL control, int percentage);
-
-private:
-  std::unordered_map<std::string, PWM_CONTROL> mPwmControls;
-};
-
-#endif // PWM_H_

app/include/pwm/PWMControl.h

@@ -0,0 +1,39 @@
+#ifndef PWMCONTROL_H_
+#define PWMCONTROL_H_
+
+#include <string>
+
+#include <Printable.h>
+#include <Serializable.h>
+
+enum class PWM_CONTROL_PROPERTY { CONTROL, ENABLE, MODE };
+enum class PWM_ENABLE { FULL_SPEED = 0, MANUAL_CONTROL };
+enum class PWM_MODE { DC = 0, PWM };
+
+class PWMControl : public Printable, public Serializable {
+public:
+  PWMControl(std::string controlPath);
+  ~PWMControl();
+
+  void Power(int percent);
+  int Power();
+
+  void EnableManualControl();
+  void Reset();
+
+  const std::string toString() const override;
+
+  json toJson() const override;
+
+private:
+  int mCurrentValue;
+
+  std::string mControlPath;
+  std::string mEnablePath;
+  std::string mModePath;
+
+  std::string mInitialEnable;
+  std::string mInitialMode;
+};
+
+#endif // PWMCONTROL_H_

app/include/pwm/PWMControlFacade.h

@@ -0,0 +1,16 @@
+#ifndef PWMCONTROLFACADE_H_
+#define PWMCONTROLFACADE_H_
+
+#include <memory>
+#include <vector>
+
+#include <pwm/PWMControl.h>
+
+#define HWMON_BASE_PATH "/sys/class/hwmon"
+
+class PWMControlFacade {
+public:
+  std::vector<std::shared_ptr<PWMControl>> PWMControls();
+};
+
+#endif // PWMCONTROLFACADE_H_

app/include/sensor/GPUSensorsFacade.h

@@ -0,0 +1,14 @@
+#ifndef GPUSENSORSFACADE_H_
+#define GPUSENSORSFACADE_H_
+
+#include <memory>
+#include <vector>
+
+#include <sensor/Sensor.h>
+
+class GPUSensorsFacade {
+public:
+  std::vector<std::shared_ptr<Sensor>> TemperatureSensors();
+};
+
+#endif // GPUSENSORSFACADE_H_

app/include/sensor/LMSensor.h

@@ -0,0 +1,24 @@
+#ifndef HWMONSENSOR_H_
+#define HWMONSENSOR_H_
+
+#include <sensors/sensors.h>
+
+#include <sensor/Sensor.h>
+
+class LMSensor : public Sensor {
+public:
+  LMSensor(const sensors_chip_name *chipName, const sensors_feature *feature,
+           const sensors_subfeature *subfeature);
+
+  int value() override;
+  const std::string toString() const override;
+
+  json toJson() const override;
+
+private:
+  const sensors_chip_name *mChipName;
+  const sensors_feature *mFeature;
+  const sensors_subfeature *mSubFeature;
+};
+
+#endif // HWMONSENSOR_H_

app/include/sensor/LMSensorsFacade.h

@@ -0,0 +1,27 @@
+#ifndef LMSENSORSFACADE_H_
+#define LMSENSORSFACADE_H_
+
+#include <memory>
+#include <vector>
+
+#include <sensors/sensors.h>
+
+#include <sensor/Sensor.h>
+
+class LMSensorsFacade {
+public:
+  LMSensorsFacade();
+  ~LMSensorsFacade();
+
+  std::vector<std::shared_ptr<Sensor>> TemperatureSensors();
+  std::vector<std::shared_ptr<Sensor>> RPMSensors();
+
+private:
+  template <sensors_subfeature_type T>
+  std::vector<std::shared_ptr<Sensor>> Sensors();
+
+private:
+  FILE *mConfigFile;
+};
+
+#endif // LMSENSORSFACADE_H_

app/include/sensor/NvidiaSensor.h

@@ -0,0 +1,18 @@
+#ifndef NVIDIASENSOR_H_
+#define NVIDIASENSOR_H_
+
+#include <sensor/Sensor.h>
+
+class NvidiaSensor : public Sensor {
+public:
+  NvidiaSensor();
+  ~NvidiaSensor();
+
+  int value() override;
+
+  const std::string toString() const override;
+
+  json toJson() const override;
+};
+
+#endif // NVIDIASENSOR_H_

app/include/sensor/Sensor.h

@@ -0,0 +1,19 @@
+#ifndef SENSOR_H_
+#define SENSOR_H_
+
+#include <Printable.h>
+#include <Serializable.h>
+
+class Sensor : public Printable, public Serializable {
+public:
+  // Read the current value
+  virtual int value() = 0;
+
+  virtual int max() const;
+  virtual void max(int value);
+
+protected:
+  int mMax = 0;
+};
+
+#endif // SENSOR_H_

app/include/sensor/SensorManager.h

@@ -0,0 +1,20 @@
+#ifndef SENSORMANAGER_H_
+#define SENSORMANAGER_H_
+
+#include <memory>
+#include <sensor/GPUSensorsFacade.h>
+#include <sensor/LMSensorsFacade.h>
+
+class SensorManager {
+public:
+  SensorManager();
+
+  std::vector<std::shared_ptr<Sensor>> TemperatureSensors();
+  std::vector<std::shared_ptr<Sensor>> RPMSensors();
+
+private:
+  std::unique_ptr<LMSensorsFacade> mLMSensorsFacade;
+  std::unique_ptr<GPUSensorsFacade> mGPUSensorsFacade;
+};
+
+#endif // SENSORMANAGER_H_

app/src/App.cxx

@@ -0,0 +1,41 @@
+#include <execution>
+
+#include <App.h>
+
+using namespace std;
+
+void App::Init() {
+  mFans = mSerializer.DeserializeFans(mSensorManager.RPMSensors());
+
+  auto fanCurves = mSerializer.DeserializeFanCurves(
+      mSensorManager.TemperatureSensors(), mFans);
+
+  mSettings = mSerializer.DeserializeSettings();
+
+  mController = make_unique<Controller>(mSettings, fanCurves);
+}
+
+void App::InitialSetup() {
+  auto fans = mFanGenerator.FindFans(mSensorManager.RPMSensors(),
+                                     mPWMControlFacade.PWMControls());
+
+  std::for_each(std::execution::par, std::begin(fans), std::end(fans),
+                [](auto &&fan) { fan->FindPWMLimits(); });
+
+  mFanLabeler.RunFanLabelInteraction(fans);
+
+  mSerializer.SerializeFans(fans);
+
+  mFans = fans;
+}
+
+void App::NormalOperation() {
+  if (mController)
+    mController->StartFanControlLoop();
+}
+
+void App::Shutdown() {
+  mSerializer.SerializeFans(mFans);
+  mFans.clear();
+  mController.reset();
+}

app/src/ConfigManager.cxx

@@ -0,0 +1,29 @@
+#include <filesystem>
+#include <fstream>
+
+#include <ConfigManager.h>
+#include <memory>
+
+using namespace std;
+namespace fs = std::filesystem;
+
+ConfigManager::ConfigManager() {
+  if (fs::exists(CONFIG_FILE)) {
+    ifstream f(CONFIG_FILE);
+    mConfig = json::parse(f);
+  }
+}
+
+void ConfigManager::SaveFans(vector<shared_ptr<Fan>> fans) {
+  json obj;
+
+  for (auto fan : fans) {
+  }
+}
+
+ConfigManager::~ConfigManager() { WriteConfig(); }
+
+void ConfigManager::WriteConfig() {
+  ofstream f(CONFIG_FILE, ios::trunc);
+  f << mConfig.dump(2) << endl;
+}

app/src/Controller.cxx

@@ -0,0 +1,37 @@
+#include <chrono>
+#include <memory>
+
+#include <Controller.h>
+#include <fan/FanCurve.h>
+
+using namespace std;
+
+Controller::Controller(shared_ptr<Settings> settings,
+                       vector<shared_ptr<FanCurve>> curves)
+    : mTimeout((1 / settings->Frequency()) * 1000), mFanCurves(curves),
+      mRun(false) {}
+
+Controller::~Controller() { StopFanControlLoop(); }
+
+void Controller::StartFanControlLoop() {
+  mRun = true;
+  Loop();
+  // mWorker = make_unique<thread>(&Controller::Loop, this);
+}
+
+void Controller::StopFanControlLoop() {
+  mRun = false;
+  // if (mWorker->joinable())
+  //   mWorker->join();
+  // mWorker.reset();
+}
+
+void Controller::Loop() {
+  while (mRun) {
+    for (auto c : mFanCurves) {
+      c->DoFanControl();
+    }
+
+    this_thread::sleep_for(chrono::milliseconds(mTimeout));
+  }
+}

app/src/FanGenerator.cxx

@@ -0,0 +1,70 @@
+#include <chrono>
+#include <iostream>
+#include <map>
+#include <memory>
+#include <thread>
+
+#include <FanGenerator.h>
+#include <fan/HwmonFan.h>
+#include <pwm/PWMControl.h>
+
+#define SETTLE_TIMEOUT 5
+
+using namespace std;
+
+vector<shared_ptr<Fan>>
+FanGenerator::FindFans(vector<shared_ptr<Sensor>> rpmSensors,
+                       vector<shared_ptr<PWMControl>> pwmControls) {
+  print("RPM Sensors", rpmSensors);
+  print("PWM controllers", pwmControls);
+  vector<shared_ptr<Fan>> mapping;
+
+  cout << "Setting all fans to maximum speed" << endl;
+  for (auto c : pwmControls) {
+    c->EnableManualControl();
+    c->Power(100);
+  }
+
+  // Wait for fans to settle
+  cout << "Waiting for fans to settle" << endl;
+  this_thread::sleep_for(chrono::seconds(SETTLE_TIMEOUT));
+
+  // Record values of all RPM sensors
+  for (auto s : rpmSensors) {
+    int value = s->value();
+    s->max(value);
+
+    cout << s->toString() << " max value: " << s->max() << endl;
+  }
+
+  // Set each fan to 50% and check if a sensor matches
+  for (auto c : pwmControls) {
+    cout << "Setting " << c->toString()
+         << " to 50% and wait for it to settle..." << endl;
+    c->Power(50);
+
+    this_thread::sleep_for(chrono::seconds(SETTLE_TIMEOUT));
+
+    for (auto s : rpmSensors) {
+      if (s->value() < s->max() * 0.7) {
+        cout << "Found matching sensor " << s->toString() << endl;
+        mapping.push_back(make_shared<HwmonFan>(c, s));
+      }
+    }
+
+    cout << "Setting fan back to 100%" << endl;
+    c->Power(100);
+  }
+
+  return mapping;
+}
+
+template <class Printable>
+void FanGenerator::print(string listLabel, vector<shared_ptr<Printable>> list) {
+  cout << listLabel << ": " << endl;
+
+  for (auto i : list) {
+    cout << i->toString() << endl;
+  }
+  cout << "\n";
+}

app/src/Serializer.cxx

@@ -0,0 +1,165 @@
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+
+#include <memory>
+
+#include <Serializer.h>
+#include <fan/HwmonFan.h>
+#include <pwm/PWMControl.h>
+#include <sensor/LMSensor.h>
+#include <string>
+
+using namespace std;
+namespace fs = filesystem;
+
+Serializer::Serializer()
+{
+  if (!fs::exists(SERIALIZATION_DIR)) {
+    fs::create_directory(SERIALIZATION_DIR);
+  }
+}
+
+void
+Serializer::SerializeFans(vector<shared_ptr<Fan>> fans)
+{
+  json obj;
+
+  for (auto f : fans) {
+    obj["fans"].push_back(f->toJson());
+  }
+
+  WriteJson(obj);
+}
+
+vector<shared_ptr<Fan>>
+Serializer::DeserializeFans(vector<shared_ptr<Sensor>> availableSensors)
+{
+  vector<shared_ptr<Fan>> fans;
+
+  // Create a for the sensors first, then searching becomes cheaper
+  map<string, shared_ptr<Sensor>> sensorMap;
+  for (auto s : availableSensors) {
+    sensorMap[s->toString()] = s;
+  }
+
+  auto data = ReadJson();
+  try {
+    for (auto& el : data["fans"].items()) {
+      auto pwmControl = make_shared<PWMControl>(el.value()["PWMControl"]);
+      auto rpmSensor = sensorMap[el.value()["LMSensor"]];
+
+      int minPWM = el.value()["MinPWM"];
+      int startPWM = el.value()["StartPWM"];
+      string label = el.value()["Label"];
+
+      auto fan = make_shared<HwmonFan>(pwmControl, rpmSensor);
+      fan->MinPWM(minPWM);
+      fan->StartPWM(startPWM);
+      fan->Label(label);
+
+      fans.push_back(fan);
+    }
+  } catch (const std::exception& e) {
+    std::cout << "Deserialization error! Message: " << e.what() << std::endl;
+  }
+  return fans;
+}
+
+void
+Serializer::WriteJson(json o)
+{
+  json obj;
+
+  if (fs::exists(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME)) {
+    obj = ReadJson();
+  }
+
+  for (auto& [key, value] : o.items()) {
+    obj[key] = value;
+  }
+
+  ofstream ostrm(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME, ios::trunc);
+  ostrm << obj.dump(2) << "\n";
+}
+
+json
+Serializer::ReadJson()
+{
+  ifstream istrm(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME);
+  return json::parse(istrm);
+}
+
+vector<shared_ptr<FanCurve>>
+Serializer::DeserializeFanCurves(
+  std::vector<std::shared_ptr<Sensor>> availableSensors,
+  std::vector<std::shared_ptr<Fan>> availableFans)
+{
+  auto data = ReadJson();
+
+  map<string, shared_ptr<Sensor>> sensorMap;
+  for (auto s : availableSensors) {
+    sensorMap[s->toString()] = s;
+  }
+
+  map<string, shared_ptr<Fan>> fanMap;
+  for (auto f : availableFans) {
+    fanMap[f->toString()] = f;
+  }
+
+  vector<shared_ptr<FanCurve>> curves;
+
+  for (auto& el : data["fancurves"].items()) {
+    vector<FanStep> steps;
+    vector<shared_ptr<Sensor>> sensors;
+    vector<shared_ptr<Fan>> fans;
+
+    for (auto& step : el.value()["FanSteps"].items()) {
+      steps.push_back(FanStep{ step.value()[0], step.value()[1] });
+    }
+
+    for (auto& sensor : el.value()["Sensors"].items()) {
+      if (sensorMap.contains(sensor.value()))
+        sensors.push_back(sensorMap[sensor.value()]);
+    }
+
+    for (auto& fan : el.value()["Fans"].items()) {
+      if (fanMap.contains(fan.value()))
+        fans.push_back(fanMap[fan.value()]);
+    }
+
+    std::unique_ptr<Aggregator> aggregator =
+      aggregatorFromString(el.value()["AggregateFunction"]);
+
+    curves.push_back(
+      make_shared<FanCurve>(steps, sensors, fans, std::move(aggregator)));
+  }
+
+  return curves;
+}
+
+std::unique_ptr<Aggregator>
+Serializer::aggregatorFromString(std::string str) const
+{
+  if (str == "max")
+    return std::make_unique<MaxAggregator>();
+  else
+    return std::make_unique<AverageAggregator>();
+}
+
+shared_ptr<Settings>
+Serializer::DeserializeSettings()
+{
+  int frequency = FREQUENCY_DEFAULT;
+
+  auto data = ReadJson();
+
+  if (data.contains("settings")) {
+    auto items = data["settings"];
+
+    if (items.contains("frequency"))
+      frequency = items["frequency"];
+  }
+
+  return make_shared<Settings>(frequency);
+}

app/src/Settings.cxx

@@ -0,0 +1,17 @@
+#include <iostream>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <Settings.h>
+
+Settings::Settings(int frequency) : mFrequency(frequency) { LogSettings(); }
+
+int Settings::Frequency() const { return mFrequency; }
+
+void Settings::LogSettings() {
+  BOOST_LOG_FUNCTION();
+
+  BOOST_LOG_TRIVIAL(info) << "### Settings";
+  BOOST_LOG_TRIVIAL(info) << "Frequency: " << mFrequency << "Hz";
+}

app/src/fan/Aggregators.cxx

@@ -0,0 +1,39 @@
+#include <climits>
+#include <fan/Aggregators.h>
+
+int
+AverageAggregator::aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const
+{
+  int sum = 0;
+
+  for (auto sensor : sensors) {
+    sum += sensor->value();
+  }
+
+  return sum / sensors.size();
+}
+
+const std::string
+AverageAggregator::toString() const
+{
+  return "Average";
+}
+
+int
+MaxAggregator::aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const
+{
+  int max = INT_MIN;
+
+  for (auto sensor : sensors) {
+    if (sensor->value() > max)
+      max = sensor->value();
+  }
+
+  return max;
+}
+
+const std::string
+MaxAggregator::toString() const
+{
+  return "Max";
+}

app/src/fan/FanCurve.cxx

@@ -0,0 +1,105 @@
+#include <boost/log/attributes/named_scope.hpp>
+#include <iostream>
+
+#include <boost/log/trivial.hpp>
+
+#include <fan/FanCurve.h>
+#include <memory>
+
+using namespace std;
+
+FanCurve::FanCurve(std::vector<FanStep> steps,
+                   std::vector<std::shared_ptr<Sensor>> sensors,
+                   std::vector<std::shared_ptr<Fan>> fans,
+                   std::unique_ptr<Aggregator> aggregator)
+  : mSteps(steps)
+  , mTempSensors(sensors)
+  , mFans(fans)
+  , mAggregator(std::move(aggregator))
+{
+  PrintInfo();
+}
+
+void
+FanCurve::DoFanControl()
+{
+  BOOST_LOG_FUNCTION();
+
+  int temp = AggregateTemperature();
+
+  int t0, t1, p0, p1;
+  int targetFanPower;
+
+  if (temp <= mSteps[0].Temp) {
+    targetFanPower = mSteps[0].Percent;
+  } else if (temp > mSteps[mSteps.size() - 1].Temp) {
+    targetFanPower = mSteps[mSteps.size() - 1].Percent;
+  } else {
+    for (int i = 0; i < mSteps.size(); i++) {
+      if (temp > mSteps[i].Temp) {
+        t0 = mSteps[i].Temp;
+        p0 = mSteps[i].Percent;
+
+        t1 = mSteps[i + 1].Temp;
+        p1 = mSteps[i + 1].Percent;
+      }
+    }
+
+    targetFanPower = p0 + ((p1 - p0) / (t1 - t0)) * (temp - t0);
+  }
+
+  for (auto f : mFans) {
+    if (f->RPM() <= 0) {
+      BOOST_LOG_TRIVIAL(warning) << "Fan stopped completely!";
+      f->PWM(f->StartPWM());
+      f->AdjustPWMLimits();
+    } else {
+      f->PWM(targetFanPower);
+    }
+  }
+}
+
+int
+FanCurve::AggregateTemperature()
+{
+  return mAggregator->aggregate(mTempSensors);
+}
+
+void
+FanCurve::PrintInfo()
+{
+  BOOST_LOG_FUNCTION()
+
+  BOOST_LOG_TRIVIAL(info) << "### Fan curve:";
+
+  stringstream sStream;
+  sStream << "Steps: ";
+  for (auto s : mSteps) {
+    sStream << "[ " << s.Temp << "C, " << s.Percent << "% ] ";
+  }
+  BOOST_LOG_TRIVIAL(info) << sStream.str();
+
+  sStream.str(string());
+
+  sStream << "Sensors: ";
+  for (auto s : mTempSensors) {
+    sStream << s->toString() << ", ";
+  }
+
+  BOOST_LOG_TRIVIAL(info) << sStream.str();
+
+  sStream.str(string());
+
+  sStream << "Fans: ";
+  for (auto s : mFans) {
+    sStream << s->toString() << ", ";
+  }
+
+  BOOST_LOG_TRIVIAL(info) << sStream.str();
+
+  sStream.str(string());
+
+  sStream << "Aggregate function: " << mAggregator->toString();
+
+  BOOST_LOG_TRIVIAL(info) << sStream.str();
+}

app/src/fan/FanLabeler.cxx

@@ -0,0 +1,41 @@
+#include <iostream>
+#include <string>
+
+#include <fan/FanLabeler.h>
+
+using namespace std;
+
+void FanLabeler::RunFanLabelInteraction(
+    std::vector<std::shared_ptr<Fan>> fans) {
+  cout << "Setting all fans to their minimum value" << endl;
+
+  for (auto f : fans) {
+    f->PWM(0);
+  }
+
+  cout << endl;
+
+  for (auto f : fans) {
+    cout << "Setting fan to max power" << endl;
+
+    f->PWM(100);
+
+    cout << "Look inside your PC and check which fan is\n"
+            "spinning fastest and enter a name for it.\n"
+            "Just press enter to skip."
+         << endl;
+
+    std::string name;
+    getline(cin, name);
+
+    if (!name.empty()) {
+      cout << "Setting " << name << " as label for this fan." << endl;
+      f->Label(name);
+    }
+
+    cout << "Resetting fan to lowest value\n\n" << endl;
+    f->PWM(0);
+  }
+
+  cout << "Done!\n" << endl;
+}

app/src/fan/HwmonFan.cxx

@@ -0,0 +1,112 @@
+#include <iostream>
+#include <ostream>
+#include <thread>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <fan/HwmonFan.h>
+#include <pwm/PWMControl.h>
+
+#define TIMEOUT 10
+#define STEP 2
+
+using namespace std;
+
+HwmonFan::HwmonFan(std::shared_ptr<PWMControl> pwmControl,
+                   std::shared_ptr<Sensor> rpmSensor)
+    : mPWMControl(pwmControl), mRpmSensor(rpmSensor) {
+  mPWMControl->EnableManualControl();
+}
+
+void HwmonFan::PWM(int percent) {
+  if (percent < mMinPWM) {
+    mPWMControl->Power(mMinPWM);
+  } else {
+    mPWMControl->Power(percent);
+  }
+}
+
+int HwmonFan::RPM() { return mRpmSensor->value(); }
+
+void HwmonFan::Label(std::string label) { mLabel = label; }
+
+void HwmonFan::MinPWM(int value) { mMinPWM = value; }
+
+int HwmonFan::MinPWM() { return mMinPWM; }
+
+void HwmonFan::StartPWM(int value) { mStartPWM = value; }
+
+int HwmonFan::StartPWM() { return mStartPWM; }
+
+void HwmonFan::FindPWMLimits() {
+  cout << "Looking for minimal PWM" << endl;
+  int minPWM = 0;
+  mMinPWM = 0;
+  mStartPWM = 0;
+
+  for (int curPWM = 100; curPWM > 0; curPWM -= STEP) {
+    PWM(curPWM);
+    this_thread::sleep_for(chrono::seconds(TIMEOUT));
+
+    if (RPM() <= 0) {
+      minPWM = curPWM + STEP;
+      break;
+    }
+  }
+
+  cout << "Setting minimal PWM: " << minPWM << endl;
+  mMinPWM = minPWM;
+
+  if (minPWM == 0) {
+    cout << "Fan never stopped. ";
+  } else {
+    int startPWM = 0;
+
+    cout << "Looking for start PWM!" << endl;
+    for (int curPWM = minPWM - STEP; curPWM < 100; curPWM += STEP) {
+      PWM(curPWM);
+      this_thread::sleep_for(chrono::seconds(TIMEOUT));
+
+      if (RPM() > 0) {
+        cout << "Setting start PWM: " << startPWM << endl;
+        startPWM = curPWM;
+        break;
+      }
+    }
+
+    mStartPWM = startPWM;
+  }
+}
+
+void HwmonFan::AdjustPWMLimits() {
+  BOOST_LOG_FUNCTION()
+
+  chrono::time_point now = chrono::steady_clock::now();
+
+  if ((now - mLastAdjustmentTime) >
+      chrono::duration(chrono::seconds(TIMEOUT))) {
+    BOOST_LOG_TRIVIAL(info) << "Increasing minimal fan speed";
+
+    mLastAdjustmentTime = now;
+    mMinPWM += 2;
+  }
+}
+
+json HwmonFan::toJson() const {
+  json obj;
+  obj = {mPWMControl->toJson(),
+         mRpmSensor->toJson(),
+         {"Label", mLabel},
+         {"MinPWM", mMinPWM},
+         {"StartPWM", mStartPWM}};
+  return obj;
+}
+
+const string HwmonFan::toString() const {
+  if (!mLabel.empty()) {
+    return mLabel;
+  } else {
+    return "fan:" + mPWMControl->toString();
+  }
+}

app/src/main.cxx

@@ -1,54 +1,99 @@
-#include <nvidia.h>
-#include <pwm.h>
-#include <sensors/sensors.h>
-
+#include <csignal>
 #include <iostream>
 
-int main() {
-  auto config = std::fopen("/etc/conf.d/sensors", "r");
-  if (sensors_init(config) != 0) {
-    std::cout << "Fuck" << std::endl;
-    return 1;
-  }
+#include <boost/date_time/posix_time/posix_time_types.hpp>
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/core.hpp>
+#include <boost/log/expressions.hpp>
+#include <boost/log/expressions/formatters/named_scope.hpp>
+#include <boost/log/expressions/message.hpp>
+#include <boost/log/support/date_time.hpp>
+#include <boost/log/trivial.hpp>
+#include <boost/log/utility/setup.hpp>
+#include <boost/log/utility/setup/common_attributes.hpp>
+#include <boost/log/utility/setup/console.hpp>
+#include <boost/program_options.hpp>
+#include <boost/program_options/options_description.hpp>
+#include <boost/program_options/parsers.hpp>
+#include <boost/program_options/value_semantic.hpp>
+#include <boost/program_options/variables_map.hpp>
 
-  int c = 0;
-  for (const sensors_chip_name *i;
-       (i = sensors_get_detected_chips(0, &c)) != NULL;) {
-    std::cout << i->prefix << std::endl;
+#include <App.h>
 
-    int d = 0;
-    for (const sensors_feature *j; (j = sensors_get_features(i, &d)) != NULL;) {
-      const sensors_subfeature *temp_feature =
-          sensors_get_subfeature(i, j, SENSORS_SUBFEATURE_TEMP_INPUT);
-      if (temp_feature) {
-        std::cout << sensors_get_label(i, j);
+#define PROJECT_VERSION "v0.2.0"
 
-        double value;
-        if (sensors_get_value(i, temp_feature->number, &value) == 0)
-          std::cout << ": " << value << " C" << std::endl;
-      }
+namespace po = boost::program_options;
+namespace logging = boost::log;
 
-      const sensors_subfeature *fan_feature =
-          sensors_get_subfeature(i, j, SENSORS_SUBFEATURE_FAN_INPUT);
+App app;
 
-      if (fan_feature) {
-        std::cout << sensors_get_label(i, j);
+static int doInitialSetup = 0;
 
-        double value;
-        if (sensors_get_value(i, fan_feature->number, &value) == 0)
-          std::cout << ": " << value << " RPM" << std::endl;
+void signal_handler(int s) { app.Shutdown(); }
+
+void InitLogging(bool verbose) {
+  logging::add_console_log(
+      std::clog,
+      logging::keywords::format =
+          (logging::expressions::stream
+           << "["
+           << logging::expressions::format_date_time<boost::posix_time::ptime>(
+                  "TimeStamp", "%Y-%m-%d %H:%M:%S")
+           << "]["
+           << logging::expressions::format_named_scope(
+                  "Scope", logging::keywords::format = "%c")
+           << "]"
+           << "[" << logging::trivial::severity << "] "
+           << logging::expressions::smessage));
+
+  logging::add_common_attributes();
+  logging::core::get()->add_global_attribute(
+      "Scope", logging::attributes::named_scope());
+
+  BOOST_LOG_FUNCTION();
+
+  if (!verbose) {
+    logging::core::get()->set_filter(logging::trivial::severity >=
+                                     logging::trivial::info);
+  } else {
+    BOOST_LOG_TRIVIAL(info) << "Verbose logging enabled";
   }
 }
 
-    std::cout << std::endl;
-  }
+int main(int argc, char **argv) {
+  BOOST_LOG_FUNCTION()
+  BOOST_LOG_TRIVIAL(info) << "Version: " << PROJECT_VERSION;
 
-  Nvidia nv;
-  auto temp = nv.get_gpu_temperature();
-  std::cout << "\nGPU Temp: " << temp << std::endl;
+  signal(SIGINT, signal_handler);
+  signal(SIGTERM, signal_handler);
 
-  PWM pwm;
-  pwm.dumpValues();
+  po::options_description desc("Allowed options");
+  desc.add_options()("help,h", "produce help message")(
+      "setup,s", po::bool_switch(),
+      "run initial setup")("verbose,v", po::bool_switch(), "print debug info");
 
+  po::variables_map vm;
+  po::store(po::parse_command_line(argc, argv, desc), vm);
+  po::notify(vm);
+
+  try {
+    InitLogging(vm["verbose"].as<bool>());
+
+    if (vm.count("help")) {
+      std::cout << desc << "\n";
+      return 0;
+    }
+
+    if (vm.count("setup") && vm["setup"].as<bool>()) {
+      app.InitialSetup();
+    } else {
+      app.Init();
+      app.NormalOperation();
+    }
+  } catch (const std::exception &e) {
+    std::cout << "An exception was caught: " << e.what() << std::endl;
+  }
+
+  app.Shutdown();
   return 0;
 }

app/src/nvidia.cxx

@@ -1,16 +0,0 @@
-#include <include/nvml.h>
-#include <nvidia.h>
-
-Nvidia::Nvidia() { nvmlInit_v2(); }
-Nvidia::~Nvidia() { nvmlShutdown(); }
-
-double Nvidia::get_gpu_temperature() {
-  nvmlDevice_t device;
-
-  nvmlDeviceGetHandleByIndex_v2(0, &device);
-
-  unsigned int temp;
-  nvmlDeviceGetTemperature(device, NVML_TEMPERATURE_GPU, &temp);
-
-  return static_cast<double>(temp);
-}

app/src/pwm.cxx

@@ -1,56 +0,0 @@
-#include <pwm.h>
-
-#include <filesystem>
-#include <iostream>
-#include <regex>
-
-namespace fs = std::filesystem;
-using namespace std;
-
-#define HWMON_BASE_PATH "/sys/class/hwmon"
-
-#define PWM_POSTFIX_ENABLE "_enable"
-#define PWM_POSTFIX_MODE "_mode"
-
-PWM::PWM() {
-  const regex re_ctrl_enable("pwm[0-9]_enable");
-  const regex re_ctrl_mode("pwm[0-9]_mode");
-  const regex re_ctrl("pwm[0-9]");
-
-  if (!fs::exists(HWMON_BASE_PATH)) {
-    cerr << HWMON_BASE_PATH << " doesn't exist" << endl;
-  } else {
-    for (const fs::directory_entry &hwmon_device :
-         fs::directory_iterator{HWMON_BASE_PATH}) {
-      cout << hwmon_device << endl;
-
-      for (const fs::directory_entry &control :
-           fs::directory_iterator{hwmon_device}) {
-        auto filename = control.path().filename().string();
-
-        if (regex_match(filename, re_ctrl)) {
-          auto controlPath = control.path().string();
-
-          fs::path path_ctrl_enable(
-              string(controlPath + string(PWM_POSTFIX_ENABLE)));
-          fs::path path_ctrl_mode(
-              string(controlPath + string(PWM_POSTFIX_MODE)));
-
-          if (fs::exists(path_ctrl_enable) && fs::exists(path_ctrl_mode))
-            cout << control << endl;
-
-          mPwmControls.insert(
-              {controlPath, PWM_CONTROL{controlPath, path_ctrl_enable.string(),
-                                        path_ctrl_mode.string()}});
-        }
-      }
-    }
-  }
-}
-
-void PWM::dumpValues() {
-  for (auto control : mPwmControls) {
-    cout << control.second.control << ", " << control.second.enable << ", "
-         << control.second.mode << endl;
-  }
-}

app/src/pwm/PWMControl.cxx

@@ -0,0 +1,111 @@
+#include <boost/log/attributes/named_scope.hpp>
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+
+#include <boost/log/trivial.hpp>
+
+#include <pwm/PWMControl.h>
+
+#define PWM_POSTFIX_ENABLE "_enable"
+#define PWM_POSTFIX_MODE "_mode"
+
+#define PWM_MAX_VALUE 255
+
+using namespace std;
+namespace fs = filesystem;
+
+PWMControl::PWMControl(string controlPath)
+  : mControlPath(controlPath)
+{
+  fs::path pathEnable(mControlPath + PWM_POSTFIX_ENABLE);
+  fs::path pathMode(mControlPath + PWM_POSTFIX_MODE);
+
+  mEnablePath = pathEnable;
+  mModePath = pathMode;
+
+  ifstream istrm;
+
+  mCurrentValue = Power();
+
+  istrm.open(mEnablePath);
+  istrm >> mInitialEnable;
+  istrm.close();
+
+  istrm.open(mInitialMode);
+  istrm >> mInitialMode;
+  istrm.close();
+}
+
+PWMControl::~PWMControl()
+{
+  BOOST_LOG_FUNCTION();
+
+  BOOST_LOG_TRIVIAL(trace) << "Cleanup";
+  Reset();
+}
+
+void
+PWMControl::Power(int percent)
+{
+  BOOST_LOG_FUNCTION();
+
+  int pwmValue = (PWM_MAX_VALUE * percent) / 100;
+
+  if (percent != mCurrentValue) {
+    BOOST_LOG_TRIVIAL(trace) << "Updating control value of " << toString()
+                             << " to " << percent << "% (" << pwmValue << ")";
+    ofstream ostrm(mControlPath, ios::trunc);
+    ostrm << pwmValue;
+    ostrm.close();
+
+    mCurrentValue = percent;
+  }
+}
+
+int
+PWMControl::Power()
+{
+  int value;
+  ifstream istrm;
+
+  istrm.open(mControlPath);
+  istrm >> value;
+
+  return (value * 100) / PWM_MAX_VALUE;
+}
+
+void
+PWMControl::EnableManualControl()
+{
+  ofstream ostrm(mEnablePath, ios::trunc);
+  ostrm << static_cast<int>(PWM_ENABLE::MANUAL_CONTROL);
+  ostrm.close();
+}
+
+void
+PWMControl::Reset()
+{
+  ofstream ostrm(mEnablePath, ios::trunc);
+
+  ostrm << mInitialEnable;
+  ostrm.close();
+
+  ostrm.open(mModePath, ios::trunc);
+  ostrm << mInitialMode;
+
+  ostrm.close();
+}
+
+const string
+PWMControl::toString() const
+{
+  return fs::path(mControlPath).filename();
+}
+
+json
+PWMControl::toJson() const
+{
+  json obj = { "PWMControl", mControlPath };
+  return obj;
+}

app/src/pwm/PWMControlFacade.cxx

@@ -0,0 +1,37 @@
+#include <filesystem>
+#include <iostream>
+#include <regex>
+
+#include <pwm/PWMControlFacade.h>
+
+using namespace std;
+namespace fs = std::filesystem;
+
+vector<shared_ptr<PWMControl>> PWMControlFacade::PWMControls() {
+  vector<shared_ptr<PWMControl>> controls;
+
+  const regex re_ctrl_enable("pwm[0-9]_enable");
+  const regex re_ctrl_mode("pwm[0-9]_mode");
+  const regex re_ctrl("pwm[0-9]");
+
+  if (!fs::exists(HWMON_BASE_PATH)) {
+    cout << HWMON_BASE_PATH << " doesn't exist" << endl;
+  } else {
+    for (const fs::directory_entry &hwmon_device :
+         fs::directory_iterator{HWMON_BASE_PATH}) {
+
+      for (const fs::directory_entry &control :
+           fs::directory_iterator{hwmon_device}) {
+        auto filename = control.path().filename().string();
+
+        if (regex_match(filename, re_ctrl)) {
+          auto controlPath = control.path().string();
+
+          controls.push_back(make_shared<PWMControl>(controlPath));
+        }
+      }
+    }
+  }
+
+  return controls;
+}

app/src/sensor/GPUSensorsFacade.cxx

@@ -0,0 +1,9 @@
+#include <sensor/GPUSensorsFacade.h>
+
+#include <sensor/NvidiaSensor.h>
+
+using namespace std;
+
+vector<shared_ptr<Sensor>> GPUSensorsFacade::TemperatureSensors() {
+  return vector<shared_ptr<Sensor>>{make_shared<NvidiaSensor>()};
+}

app/src/sensor/LMSensor.cxx

@@ -0,0 +1,26 @@
+#include <boost/json/kind.hpp>
+#include <sensor/LMSensor.h>
+#include <sensors/sensors.h>
+
+using namespace std;
+
+LMSensor::LMSensor(const sensors_chip_name *chipName,
+                   const sensors_feature *feature,
+                   const sensors_subfeature *subfeature)
+    : mChipName(chipName), mFeature(feature), mSubFeature(subfeature) {}
+
+int LMSensor::value() {
+  double value;
+  sensors_get_value(mChipName, mSubFeature->number, &value);
+
+  return static_cast<int>(value);
+}
+
+const string LMSensor::toString() const {
+  return sensors_get_label(mChipName, mFeature);
+}
+
+json LMSensor::toJson() const {
+  json obj = {"LMSensor", toString()};
+  return obj;
+}

app/src/sensor/LMSensorsFacade.cxx

@@ -0,0 +1,50 @@
+#include <stdexcept>
+
+#include <sensors/sensors.h>
+
+#include <sensor/LMSensorsFacade.h>
+
+#include <sensor/LMSensor.h>
+#include <sensor/NvidiaSensor.h>
+
+using namespace std;
+
+#define CONFIG_FILE "/etc/conf.d/sensors"
+
+LMSensorsFacade::LMSensorsFacade() : mConfigFile(fopen(CONFIG_FILE, "r")) {
+  if (sensors_init(mConfigFile) != 0) {
+    throw runtime_error("Config file doesn't exist");
+  }
+}
+
+LMSensorsFacade::~LMSensorsFacade() { sensors_cleanup(); }
+
+std::vector<std::shared_ptr<Sensor>> LMSensorsFacade::TemperatureSensors() {
+  return Sensors<SENSORS_SUBFEATURE_TEMP_INPUT>();
+}
+
+std::vector<std::shared_ptr<Sensor>> LMSensorsFacade::RPMSensors() {
+  return Sensors<SENSORS_SUBFEATURE_FAN_INPUT>();
+}
+
+template <sensors_subfeature_type T>
+std::vector<std::shared_ptr<Sensor>> LMSensorsFacade::Sensors() {
+  std::vector<std::shared_ptr<Sensor>> sensors;
+
+  int c = 0;
+  for (const sensors_chip_name *chipName;
+       (chipName = sensors_get_detected_chips(0, &c)) != NULL;) {
+
+    int d = 0;
+    for (const sensors_feature *feature;
+         (feature = sensors_get_features(chipName, &d)) != NULL;) {
+      auto subFeature = sensors_get_subfeature(chipName, feature, T);
+      if (subFeature) {
+        sensors.push_back(
+            std::make_shared<LMSensor>(chipName, feature, subFeature));
+      }
+    }
+  }
+
+  return sensors;
+}

app/src/sensor/NvidiaSensor.cxx

@@ -0,0 +1,26 @@
+#include <include/nvml.h>
+
+#include <sensor/NvidiaSensor.h>
+
+using namespace std;
+
+NvidiaSensor::NvidiaSensor() { nvmlInit_v2(); }
+NvidiaSensor::~NvidiaSensor() { nvmlShutdown(); }
+
+int NvidiaSensor::value() {
+  nvmlDevice_t device;
+
+  nvmlDeviceGetHandleByIndex_v2(0, &device);
+
+  unsigned int temp;
+  nvmlDeviceGetTemperature(device, NVML_TEMPERATURE_GPU, &temp);
+
+  return static_cast<int>(temp);
+}
+
+const std::string NvidiaSensor::toString() const { return "NvidiaGPU"; }
+
+json NvidiaSensor::toJson() const {
+  json obj = {"NvidiaSensor", toString()};
+  return obj;
+}

app/src/sensor/Sensor.cxx

@@ -0,0 +1,5 @@
+#include <sensor/Sensor.h>
+
+int Sensor::max() const { return mMax; }
+
+void Sensor::max(int value) { mMax = value; }

app/src/sensor/SensorManager.cxx

@@ -0,0 +1,23 @@
+#include <sensor/SensorManager.h>
+
+using namespace std;
+
+SensorManager::SensorManager()
+    : mLMSensorsFacade(make_unique<LMSensorsFacade>()),
+      mGPUSensorsFacade(make_unique<GPUSensorsFacade>()) {}
+
+vector<shared_ptr<Sensor>> SensorManager::TemperatureSensors() {
+  vector<shared_ptr<Sensor>> tempSensors;
+
+  tempSensors = mLMSensorsFacade->TemperatureSensors();
+
+  //   auto gpuSensors = mGPUSensorsFacade->TemperatureSensors();
+  //  tempSensors.insert(tempSensors.end(), gpuSensors.begin(),
+  //  gpuSensors.end());
+
+  return tempSensors;
+}
+
+vector<shared_ptr<Sensor>> SensorManager::RPMSensors() {
+  return mLMSensorsFacade->RPMSensors();
+}

app/unit/fantasize.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Fantasize fan control service
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/fantasize
+Restart=always
+
+[Install]
+WantedBy=graphical.target

doc/Application Overview.drawio

@@ -0,0 +1 @@
+<mxfile host="app.diagrams.net" modified="2022-09-24T19:31:05.408Z" agent="5.0 (X11)" etag="F8WQQZ1xw24pL79IvZh_" version="20.2.2" type="device"><diagram id="bxDzWbPEviacuxaYKsiD" name="Page-1">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</diagram></mxfile>

doc/ApplicationStart.plantuml

@@ -0,0 +1,17 @@
+@startuml
+
+start
+:Initialization;
+
+if (Config exists) then (yes)
+  :Load config;
+else (no)
+  :Do first-start initialization;
+endif
+
+:Load Fan Curves;
+:Enter fan control loop;
+
+stop
+
+@enduml

doc/Class.plantuml

@@ -0,0 +1,119 @@
+@startuml
+
+package sensor {
+        interface Sensor {
+                + {abstract} int Value()
+        }
+
+        class LMSensor {
+                - string Label
+
+                + int Value()
+        }
+
+        class GPUSensor {
+                + int Value()
+        }
+
+        class LMSensorsFacade
+        {
+                + List<Sensor> RPMSensors()
+                + List<Sensor> TemperatureSensors()
+        }
+
+        class GPUSensorsFacade
+        {
+                + List<Sensor> TemperatureSensors()
+        }
+
+        class SensorManager
+        {
+                - LMSensorsFacade
+                - GPUSensorsFacade
+
+                + List<Sensor> RPMSensors()
+                + List<Sensor> TemperatureSensors()
+        }
+}
+
+package fan
+{
+        class HWMONFan {
+                - string Label
+                - Sensor RPMSensor
+                - PWMControl PWMControl
+
+                + int RPM()
+                + void PWMPercent(int value)
+        }
+
+        class FanGenerator
+        {
+                + FanList FindFans(List<RPMSensor>, List<PWMControl>)
+        }
+
+        struct FanStep
+        {
+                int Temp
+                int Percent
+        }
+
+        class FanCurve
+        {
+                - List<FanStep> Steps
+                - List<Sensor> TempSensor
+                - List<HWMONFan> Fan
+
+                + DoFanControl()
+        }
+
+        class FanController
+        {
+                - List<FanCurve>
+
+                + void StartFanControlLoop()
+        }
+}
+
+package pwm
+{
+        class PWMControl {
+                + void PWMPercent(int value)
+                + int PWM()
+        }
+
+        class PWMControlFacade {
+                + List<PWMControl> PWMControls()
+        }
+}
+
+class ConfigManager
+{
+
+}
+
+HWMONFan -- Sensor
+HWMONFan -- PWMControl
+HWMONFan -- FanCurve
+
+PWMControlFacade -- PWMControl
+
+Sensor <|-- LMSensor
+Sensor <|-- GPUSensor
+
+SensorManager - Sensor
+
+LMSensor -- LMSensorsFacade
+GPUSensor -- GPUSensorsFacade
+LMSensorsFacade -- SensorManager
+GPUSensorsFacade -- SensorManager
+
+FanGenerator -- HWMONFan
+FanGenerator -- SensorManager : uses >
+FanGenerator -- PWMControlFacade : uses >
+
+Sensor - FanCurve
+FanCurve -- FanStep
+
+FanCurve -- FanController
+@enduml

doc/Initialization.plantuml

@@ -0,0 +1,23 @@
+@startuml
+participant main
+participant LMSensorsFacade as lms
+participant GPUSensor as gpus
+participant PWMControlFactory as pwmfc
+
+main -> lms: RPMSensors()
+main <-- lms: vector<Sensor>
+
+main -> lms: TemperatureSensors()
+main <-- lms: vector<Sensor>
+
+main -> gpus: GPUSensor()
+main <-- gpus: Sensor
+note right
+        Add GPUSensor to list
+        of temperature sensors
+end note
+
+main -> pwmfc: PWMControllers()
+main <-- pwmfc: vector<PWMControl>
+
+@enduml

doc/InteractiveMapping.plantuml

@@ -0,0 +1,7 @@
+@startuml
+actor User as usr
+participant Interface as if
+
+
+
+@enduml