1 files changed, 138 insertions, 0 deletions
diff --git a/src/android/app/src/main/java/org/yuzu/yuzu_emu/model/GameProvider.java b/src/android/app/src/main/java/org/yuzu/yuzu_emu/model/GameProvider.java
new file mode 100644
index 000000000..eff4b1e2d
--- /dev/null
+++ b/src/android/app/src/main/java/org/yuzu/yuzu_emu/model/GameProvider.java
@@ -0,0 +1,138 @@
+package org.yuzu.yuzu_emu.model;
+
+import android.content.ContentProvider;
+import android.content.ContentValues;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.net.Uri;
+
+import androidx.annotation.NonNull;
+
+import org.yuzu.yuzu_emu.BuildConfig;
+import org.yuzu.yuzu_emu.utils.Log;
+
+/**
+ * Provides an interface allowing Activities to interact with the SQLite database.
+ * CRUD methods in this class can be called by Activities using getContentResolver().
+ */
+public final class GameProvider extends ContentProvider {
+    public static final String REFRESH_LIBRARY = "refresh";
+    public static final String RESET_LIBRARY = "reset";
+
+    public static final String AUTHORITY = "content://" + BuildConfig.APPLICATION_ID + ".provider";
+    public static final Uri URI_FOLDER =
+            Uri.parse(AUTHORITY + "/" + GameDatabase.TABLE_NAME_FOLDERS + "/");
+    public static final Uri URI_REFRESH = Uri.parse(AUTHORITY + "/" + REFRESH_LIBRARY + "/");
+    public static final Uri URI_RESET = Uri.parse(AUTHORITY + "/" + RESET_LIBRARY + "/");
+
+    public static final String MIME_TYPE_FOLDER = "vnd.android.cursor.item/vnd.dolphin.folder";
+    public static final String MIME_TYPE_GAME = "vnd.android.cursor.item/vnd.dolphin.game";
+
+
+    private GameDatabase mDbHelper;
+
+    @Override
+    public boolean onCreate() {
+        Log.info("[GameProvider] Creating Content Provider...");
+
+        mDbHelper = new GameDatabase(getContext());
+
+        return true;
+    }
+
+    @Override
+    public Cursor query(@NonNull Uri uri, String[] projection, String selection,
+                        String[] selectionArgs, String sortOrder) {
+        Log.info("[GameProvider] Querying URI: " + uri);
+
+        SQLiteDatabase db = mDbHelper.getReadableDatabase();
+
+        String table = uri.getLastPathSegment();
+
+        if (table == null) {
+            Log.error("[GameProvider] Badly formatted URI: " + uri);
+            return null;
+        }
+
+        Cursor cursor = db.query(table, projection, selection, selectionArgs, null, null, sortOrder);
+        cursor.setNotificationUri(getContext().getContentResolver(), uri);
+
+        return cursor;
+    }
+
+    @Override
+    public String getType(@NonNull Uri uri) {
+        Log.verbose("[GameProvider] Getting MIME type for URI: " + uri);
+        String lastSegment = uri.getLastPathSegment();
+
+        if (lastSegment == null) {
+            Log.error("[GameProvider] Badly formatted URI: " + uri);
+            return null;
+        }
+
+        if (lastSegment.equals(GameDatabase.TABLE_NAME_FOLDERS)) {
+            return MIME_TYPE_FOLDER;
+        } else if (lastSegment.equals(GameDatabase.TABLE_NAME_GAMES)) {
+            return MIME_TYPE_GAME;
+        }
+
+        Log.error("[GameProvider] Unknown MIME type for URI: " + uri);
+        return null;
+    }
+
+    @Override
+    public Uri insert(@NonNull Uri uri, ContentValues values) {
+        Log.info("[GameProvider] Inserting row at URI: " + uri);
+
+        SQLiteDatabase database = mDbHelper.getWritableDatabase();
+        String table = uri.getLastPathSegment();
+
+        if (table != null) {
+            if (table.equals(RESET_LIBRARY)) {
+                mDbHelper.resetDatabase(database);
+                return uri;
+            }
+            if (table.equals(REFRESH_LIBRARY)) {
+                Log.info(
+                        "[GameProvider] URI specified table REFRESH_LIBRARY. No insertion necessary; refreshing library contents...");
+                mDbHelper.scanLibrary(database);
+                return uri;
+            }
+
+            long id = database.insertWithOnConflict(table, null, values, SQLiteDatabase.CONFLICT_IGNORE);
+
+            // If insertion was successful...
+            if (id > 0) {
+                // If we just added a folder, add its contents to the game list.
+                if (table.equals(GameDatabase.TABLE_NAME_FOLDERS)) {
+                    mDbHelper.scanLibrary(database);
+                }
+
+                // Notify the UI that its contents should be refreshed.
+                getContext().getContentResolver().notifyChange(uri, null);
+                uri = Uri.withAppendedPath(uri, Long.toString(id));
+            } else {
+                Log.error("[GameProvider] Row already exists: " + uri + " id: " + id);
+            }
+        } else {
+            Log.error("[GameProvider] Badly formatted URI: " + uri);
+        }
+
+        database.close();
+
+        return uri;
+    }
+
+    @Override
+    public int delete(@NonNull Uri uri, String selection, String[] selectionArgs) {
+        Log.error("[GameProvider] Delete operations unsupported. URI: " + uri);
+        return 0;
+    }
+
+    @Override
+    public int update(@NonNull Uri uri, ContentValues values, String selection,
+                      String[] selectionArgs) {
+        Log.error("[GameProvider] Update operations unsupported. URI: " + uri);
+        return 0;
+    }
+}