Split the rest of the preferences in PreferencesHelper (#8074)

* Split the reset of the preferences in PreferencesHelper

* Capitalize ThemeMode

app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubApi.kt

@@ -1,7 +1,8 @@
 package eu.kanade.tachiyomi.extension.api
 
 import android.content.Context
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.core.preference.Preference
+import eu.kanade.tachiyomi.core.preference.PreferenceStore
 import eu.kanade.tachiyomi.extension.ExtensionManager
 import eu.kanade.tachiyomi.extension.model.AvailableSources
 import eu.kanade.tachiyomi.extension.model.Extension
@@ -22,7 +23,10 @@ import java.util.concurrent.TimeUnit
 internal class ExtensionGithubApi {
 
     private val networkService: NetworkHelper by injectLazy()
-    private val preferences: PreferencesHelper by injectLazy()
+    private val preferenceStore: PreferenceStore by injectLazy()
+    private val lastExtCheck: Preference<Long> by lazy {
+        preferenceStore.getLong("last_ext_check", 0)
+    }
     private val extensionManager: ExtensionManager by injectLazy()
 
     private var requiresFallbackSource = false
@@ -65,14 +69,14 @@ internal class ExtensionGithubApi {
 
     suspend fun checkForUpdates(context: Context, fromAvailableExtensionList: Boolean = false): List<Extension.Installed>? {
         // Limit checks to once a day at most
-        if (fromAvailableExtensionList.not() && Date().time < preferences.lastExtCheck().get() + TimeUnit.DAYS.toMillis(1)) {
+        if (fromAvailableExtensionList.not() && Date().time < lastExtCheck.get() + TimeUnit.DAYS.toMillis(1)) {
             return null
         }
 
         val extensions = if (fromAvailableExtensionList) {
             extensionManager.availableExtensions
         } else {
-            findExtensions().also { preferences.lastExtCheck().set(Date().time) }
+            findExtensions().also { lastExtCheck.set(Date().time) }
         }
 
         val installedExtensions = ExtensionLoader.loadExtensions(context)