Add logic to label fans, some cleanup

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

@@ -12,19 +12,31 @@
 using namespace std;
 
 HwmonFan::HwmonFan(std::shared_ptr<PWMControl> pwmControl,
-                   std::shared_ptr<Sensor> rpmSensor, std::string label,
-                   int minPWM, int startPWM)
-    : mPWMControl(pwmControl), mRpmSensor(rpmSensor), mLabel(label),
-      mMinPWM(minPWM), mStartPWM(startPWM) {
+                   std::shared_ptr<Sensor> rpmSensor)
+    : mPWMControl(pwmControl), mRpmSensor(rpmSensor) {
+  cout << "Enabling manual control" << endl;
   mPWMControl->EnableManualControl();
 }
 
-void HwmonFan::PWM(int percent) { mPWMControl->pwm(percent); }
+void HwmonFan::PWM(int percent) {
+  if (percent < mMinPWM) {
+    mPWMControl->pwm(mMinPWM);
+  } else {
+    mPWMControl->pwm(percent);
+  }
+}
 
 int HwmonFan::RPM() { return mRpmSensor->value(); }
 
+void HwmonFan::Label(std::string label) { mLabel = label; }
+
+void HwmonFan::MinPWM(int value) { mMinPWM = value; }
+
+void HwmonFan::StartPWM(int value) { mStartPWM = value; }
+
 void HwmonFan::FindMinPWM() {
   int minPWM = 0;
+  mMinPWM = 0;
 
   for (int curPWM = 100; curPWM > 0; curPWM -= 5) {
     PWM(curPWM);
@@ -52,7 +64,7 @@ json HwmonFan::toJson() const {
   json obj;
   obj = {mPWMControl->toJson(),
          mRpmSensor->toJson(),
-         {"label", mLabel},
+         {"Label", mLabel},
          {"MinPWM", mMinPWM}};
   return obj;
 }