Started implementation of event update sheet

app/src/main/java/com/denizk0461/studip/db/AppDAO.kt

@@ -1,9 +1,7 @@
 package com.denizk0461.studip.db
 
 import androidx.lifecycle.LiveData
-import androidx.room.Dao
-import androidx.room.Insert
-import androidx.room.Query
+import androidx.room.*
 import com.denizk0461.studip.model.*
 
 /**
@@ -16,13 +14,29 @@ interface AppDAO {
     /* --- Stud.IP schedule events --- */
 
     /**
-     * Retrieves all Stud.IP events.
+     * Retrieves all Stud.IP events, ordered by their timeslots, then their IDs.
      *
      * @return all Stud.IP events exposed through a LiveData object
      */
-    @get:Query("SELECT * FROM events ORDER BY id")
+    @get:Query("SELECT * FROM events ORDER BY timeslotId, id")
     val allEvents: LiveData<List<StudIPEvent>>
 
+    /**
+     * Updates a given Stud.IP element.
+     *
+     * @param event object to be updated
+     */
+    @Update
+    fun update(event: StudIPEvent)
+
+    /**
+     * Updates a given Stud.IP element.
+     *
+     * @param event object to be updated
+     */
+    @Delete
+    fun delete(event: StudIPEvent)
+
     /**
      * Inserts a Stud.IP event into the database.
      *

app/src/main/java/com/denizk0461/studip/db/AppDatabase.kt

@@ -17,7 +17,7 @@ import com.denizk0461.studip.model.*
         OfferCategory::class,
         OfferItem::class
     ],
-    version = 12,
+    version = 13,
 )
 abstract class AppDatabase : RoomDatabase() {
 

app/src/main/java/com/denizk0461/studip/db/AppRepository.kt

@@ -51,6 +51,24 @@ class AppRepository(app: Application) {
      */
     val allOffers: LiveData<List<CanteenOffer>> = dao.allOffers
 
+    /**
+     * Updates a schedule element.
+     *
+     * @param event the event to update
+     */
+    fun update(event: StudIPEvent) {
+        dao.update(event)
+    }
+
+    /**
+     * Deletes a schedule element.
+     *
+     * @param event the event to delete
+     */
+    fun delete(event: StudIPEvent) {
+        dao.delete(event)
+    }
+
     /**
      * Retrieves all canteen offer date objects.
      *
@@ -147,18 +165,20 @@ class AppRepository(app: Application) {
     // --- settings preferences --- //
 
     /**
-     * Retrieves the user's preference on displaying allergens.
+     * Retrieves ta user-set boolean preference.
      *
-     * @return  whether the user set this preference
+     * @param pref  preference to retrieve
+     * @return      whether the user set this preference
      */
-    fun getPreferenceAllergen(): Boolean = prefs.getBoolean("setting_allergen", false)
+    fun getPreference(pref: SettingsPreferences): Boolean = prefs.getBoolean(pref.key, false)
 
     /**
-     * Updates the user's preference on displaying allergens.
+     * Updates a user-set boolean preference.
      *
-     * @param value new value to set the preference to
+     * @param pref      preference to set
+     * @param newValue  new value to set the preference to
      */
-    fun setPreferenceAllergen(value: Boolean) {
-        prefs.edit().putBoolean("setting_allergen", value).apply()
+    fun setPreference(pref: SettingsPreferences, newValue: Boolean) {
+        prefs.edit().putBoolean(pref.key, newValue).apply()
     }
 }