1 files changed, 53 insertions, 0 deletions
diff --git a/plugins/omemo/src/pre_key_store.vala b/plugins/omemo/src/pre_key_store.vala
new file mode 100644
index 00000000..0fd78ffc
--- /dev/null
+++ b/plugins/omemo/src/pre_key_store.vala
@@ -0,0 +1,53 @@
+using Signal;
+using Qlite;
+
+namespace Dino.Plugins.Omemo {
+
+private class BackedPreKeyStore : SimplePreKeyStore {
+    private Database db;
+    private int identity_id;
+
+    public BackedPreKeyStore(Database db, int identity_id) {
+        this.db = db;
+        this.identity_id = identity_id;
+        init();
+    }
+
+    private void init() {
+        try {
+            foreach (Row row in db.pre_key.select().with(db.pre_key.identity_id, "=", identity_id)) {
+                store_pre_key(row[db.pre_key.pre_key_id], Base64.decode(row[db.pre_key.record_base64]));
+            }
+        } catch (Error e) {
+            print(@"OMEMO: Error while initializing pre key store: $(e.message)\n");
+        }
+
+        pre_key_stored.connect(on_pre_key_stored);
+        pre_key_deleted.connect(on_pre_key_deleted);
+    }
+
+    public void on_pre_key_stored(PreKeyStore.Key key) {
+        try {
+            db.pre_key.insert().or("REPLACE")
+                    .value(db.pre_key.identity_id, identity_id)
+                    .value(db.pre_key.pre_key_id, (int) key.key_id)
+                    .value(db.pre_key.record_base64, Base64.encode(key.record))
+                    .perform();
+        } catch (Error e) {
+            print(@"OMEMO: Error while updating pre key store: $(e.message)\n");
+        }
+    }
+
+    public void on_pre_key_deleted(PreKeyStore.Key key) {
+        try {
+            db.pre_key.delete()
+                    .with(db.pre_key.identity_id, "=", identity_id)
+                    .with(db.pre_key.pre_key_id, "=", (int) key.key_id)
+                    .perform();
+        } catch (Error e) {
+            print(@"OMEMO: Error while updating pre key store: $(e.message)\n");
+        }
+    }
+}
+
+}
+\ No newline at end of file