Fully documented all Kotlin files and added TODOs to functions that need to be updated in some way

app/src/main/java/com/denizk0461/studip/fragment/SettingsFragment.kt

@@ -7,23 +7,32 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.Toast
 import androidx.fragment.app.Fragment
 import com.denizk0461.studip.BuildConfig
 import com.denizk0461.studip.activity.FetcherActivity
-import com.denizk0461.studip.data.Misc
 import com.denizk0461.studip.databinding.FragmentSettingsBinding
 
+/**
+ * User-facing fragment view that is used to change app settings.
+ */
 class SettingsFragment : Fragment() {
 
+    // Nullable view binding reference
     private var _binding: FragmentSettingsBinding? = null
-    // This property is only valid between onCreateView and
-    // onDestroyView.
+
+    /*
+     * Non-null reference to the view binding. This property is only valid between onCreateView and
+     * onDestroyView.
+     */
     private val binding get() = _binding!!
+
+    // Click counter on the app version button
     private var appVersionClick = 0
 
-    private var isQuarterChecked = false
+    // 222
+    private val mysteryLink = "https://www.youtube.com/watch?v=nhIQMCXJzLI"
 
+    // Instantiate the view binding
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
         _binding = FragmentSettingsBinding.inflate(inflater, container, false)
         return binding.root
@@ -32,47 +41,39 @@ class SettingsFragment : Fragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-//        binding.layoutQuarter.setOnClickListener {
-//            isQuarterChecked = !isQuarterChecked
-//            binding.switchQuarter.isChecked = isQuarterChecked
-//        }
-
+        // Launch the Stud.IP schedule fetcher activity
         binding.buttonRefreshSchedule.setOnClickListener {
             launchWebView()
         }
 
-        binding.switchQuarter.setOnClickListener {
-            isQuarterChecked = !isQuarterChecked
-        }
-
+        // Set click listener for the app version button
         binding.buttonAppVersion.setOnClickListener {
             when (appVersionClick) {
-                19 -> {
-                    appVersionClick += 1
-                }
-                20 -> {
-                    appVersionClick += 1
-                }
-                21 -> {
-                    appVersionClick += 1
-                }
                 22 -> {
-                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(Misc.mysteryLink)))
+                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(mysteryLink)))
                     appVersionClick = 0
                 }
                 else -> appVersionClick += 1
             }
         }
 
+        /*
+         * Display the app's version as set in the build.gradle. Also display if the app is a
+         * development version.
+         */
         @SuppressLint("SetTextI18n")
-        binding.appVersionText.text = "${BuildConfig.VERSION_NAME}-${if (BuildConfig.DEBUG) "debug" else "release"}"
+        binding.appVersionText.text = "${BuildConfig.VERSION_NAME}-${if (BuildConfig.DEBUG) "dev" else "release"}"
     }
 
+    // Invalidate the view binding
     override fun onDestroyView() {
         super.onDestroyView()
         _binding = null
     }
 
+    /**
+     * Launch the Stud.IP schedule fetcher activity.
+     */
     private fun launchWebView() {
         startActivity(Intent(context, FetcherActivity::class.java))
     }