Add option to change school from SettingsActivity

app/src/main/java/net/underdesk/circolapp/SettingsActivity.kt

@@ -22,11 +22,9 @@ import android.os.Bundle
 import android.text.InputType
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.app.AppCompatDelegate
-import androidx.preference.EditTextPreference
-import androidx.preference.Preference
-import androidx.preference.PreferenceFragmentCompat
-import androidx.preference.SwitchPreferenceCompat
+import androidx.preference.*
 import kotlinx.android.synthetic.main.settings_activity.*
+import net.underdesk.circolapp.server.ServerAPI
 import net.underdesk.circolapp.works.PollWork
 
 class SettingsActivity : AppCompatActivity() {
@@ -46,8 +44,17 @@ class SettingsActivity : AppCompatActivity() {
         override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
             setPreferencesFromResource(R.xml.root_preferences, rootKey)
 
+            val schoolPreference = findPreference<ListPreference>("school")
+            schoolPreference?.let { setSchoolListPreference(it) }
+            val schoolPreferenceListener =
+                Preference.OnPreferenceChangeListener { _, value ->
+                    ServerAPI.changeServer(value.toString().toInt())
+                    true
+                }
+            schoolPreference?.onPreferenceChangeListener = schoolPreferenceListener
+
             val darkThemePreference = findPreference<Preference>("dark_theme")
-            val listener =
+            val themePreferenceListener =
                 Preference.OnPreferenceChangeListener { _, value ->
                     when (value) {
                         "auto" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
@@ -56,7 +63,7 @@ class SettingsActivity : AppCompatActivity() {
                     }
                     true
                 }
-            darkThemePreference?.onPreferenceChangeListener = listener
+            darkThemePreference?.onPreferenceChangeListener = themePreferenceListener
 
             val pollIntervalPreference = findPreference<EditTextPreference>("poll_interval")
             pollIntervalPreference?.setOnBindEditTextListener { editText ->
@@ -74,5 +81,20 @@ class SettingsActivity : AppCompatActivity() {
             pollIntervalPreference?.onPreferenceChangeListener = notificationPrefChangedListener
             notificationPreference?.onPreferenceChangeListener = notificationPrefChangedListener
         }
+
+        private fun setSchoolListPreference(listPreference: ListPreference) {
+            val servers = ServerAPI.Companion.Servers.values()
+            val entryValues = arrayListOf<CharSequence>()
+            val entryNames = arrayListOf<CharSequence>()
+
+            for (i in servers.indices) {
+                entryValues.add(i.toString())
+                entryNames.add(ServerAPI.getServerName(servers[i]))
+            }
+
+            listPreference.setDefaultValue("0")
+            listPreference.entryValues = entryValues.toTypedArray()
+            listPreference.entries = entryNames.toTypedArray()
+        }
     }
 }

app/src/main/java/net/underdesk/circolapp/fragments/CircularLetterFragment.kt

@@ -47,7 +47,7 @@ class CircularLetterFragment :
         CircularLetterViewModelFactory(
             CircularRepository.getInstance(
                 AppDatabase.getInstance(requireContext()).circularDao(),
-                ServerAPI.getInstance(ServerAPI.Companion.Servers.CURIE)
+                ServerAPI.getInstance(requireContext())
             )
         )
     }

app/src/main/java/net/underdesk/circolapp/fragments/FavouritesFragment.kt

@@ -41,7 +41,7 @@ class FavouritesFragment : Fragment(), MainActivity.SearchCallback {
         FavouritesViewModelFactory(
             CircularRepository.getInstance(
                 AppDatabase.getInstance(requireContext()).circularDao(),
-                ServerAPI.getInstance(ServerAPI.Companion.Servers.CURIE)
+                ServerAPI.getInstance(requireContext())
             )
         )
     }

app/src/main/java/net/underdesk/circolapp/fragments/RemindersFragment.kt

@@ -41,7 +41,7 @@ class RemindersFragment : Fragment(), MainActivity.SearchCallback {
         RemindersViewModelFactory(
             CircularRepository.getInstance(
                 AppDatabase.getInstance(requireContext()).circularDao(),
-                ServerAPI.getInstance(ServerAPI.Companion.Servers.CURIE)
+                ServerAPI.getInstance(requireContext())
             )
         )
     }

app/src/main/java/net/underdesk/circolapp/server/ServerAPI.kt

@@ -18,12 +18,14 @@
 
 package net.underdesk.circolapp.server
 
+import android.content.Context
+import androidx.preference.PreferenceManager
 import net.underdesk.circolapp.data.Circular
 import net.underdesk.circolapp.server.curie.CurieServer
 import net.underdesk.circolapp.server.porporato.PorporatoServer
 
 class ServerAPI(
-    private val server: Server
+    private var server: Server
 ) {
     suspend fun getCircularsFromServer(): Pair<List<Circular>, Result> {
         val newCircularsAvailable = server.newCircularsAvailable()
@@ -37,6 +39,10 @@ class ServerAPI(
         return server.getCircularsFromServer()
     }
 
+    fun changeServer(server: Server) {
+        this.server = server
+    }
+
     companion object {
         enum class Servers {
             CURIE, PORPORATO
@@ -46,20 +52,38 @@ class ServerAPI(
             SUCCESS, ERROR
         }
 
+        fun getServerName(server: Servers) = when (server) {
+            Servers.CURIE -> "Liceo scientifico Maria Curie"
+            Servers.PORPORATO -> "Liceo G.F. Porporato"
+        }
+
         @Volatile
         private var instance: ServerAPI? = null
 
         fun getInstance(server: Servers): ServerAPI {
             return instance ?: synchronized(this) {
-                instance ?: createServerAPI(server).also { instance = it }
+                instance ?: ServerAPI(createServer(server)).also { instance = it }
             }
         }
 
-        private fun createServerAPI(server: Servers): ServerAPI {
-            return when (server) {
-                Servers.CURIE -> ServerAPI(CurieServer())
-                Servers.PORPORATO -> ServerAPI(PorporatoServer())
-            }
+        fun getInstance(context: Context): ServerAPI {
+            val server = Servers.values()[
+                    PreferenceManager.getDefaultSharedPreferences(context).getString("school", "0")
+                        ?.toInt() ?: 0
+            ]
+
+            return instance ?: synchronized(this) {
+                instance ?: ServerAPI(createServer(server)).also { instance = it }
+            }
+        }
+
+        fun changeServer(index: Int) {
+            instance?.changeServer(createServer(Servers.values()[index]))
+        }
+
+        private fun createServer(server: Servers) = when (server) {
+            Servers.CURIE -> CurieServer()
+            Servers.PORPORATO -> PorporatoServer()
         }
     }
 }

app/src/main/java/net/underdesk/circolapp/works/PollWork.kt

@@ -87,7 +87,7 @@ class PollWork(appContext: Context, workerParams: WorkerParameters) :
     override suspend fun doWork(): Result = coroutineScope {
         val circularRepository = CircularRepository.getInstance(
             AppDatabase.getInstance(applicationContext).circularDao(),
-            ServerAPI.getInstance(ServerAPI.Companion.Servers.CURIE)
+            ServerAPI.getInstance(applicationContext)
         )
 
         val result = circularRepository.updateCirculars()

app/src/main/res/values-it/strings.xml

@@ -11,6 +11,7 @@
 
     <string name="preferences_general_header">Generale</string>
     <string name="preference_notifications_header">Notifiche</string>
+    <string name="preferences_school">Scuola</string>
     <string name="preferences_dark_theme">Tema scuro</string>
     <string name="preferences_notify_new_circulars">Mostra notifiche</string>
     <string name="preferences_poll_interval">Intervallo di sincronizzazione</string>

app/src/main/res/values/strings.xml

@@ -11,6 +11,7 @@
 
     <string name="preferences_general_header">General</string>
     <string name="preference_notifications_header">Notifications</string>
+    <string name="preferences_school">School</string>
     <string name="preferences_dark_theme">Dark theme</string>
     <string name="preferences_notify_new_circulars">Show notifications</string>
     <string name="preferences_poll_interval">Synchronization interval</string>

app/src/main/res/xml/root_preferences.xml

@@ -3,6 +3,11 @@
 
     <PreferenceCategory app:title="@string/preferences_general_header">
 
+        <ListPreference
+            app:key="school"
+            app:title="@string/preferences_school"
+            app:useSimpleSummaryProvider="true" />
+
         <ListPreference
             app:defaultValue="auto"
             app:entries="@array/dark_theme_entries"