Fix data storage and other things

statestore.go

@@ -0,0 +1,67 @@
+// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
+// Copyright (C) 2018 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"maunium.net/go/mautrix-appservice"
+	"encoding/json"
+	"io/ioutil"
+	"os"
+)
+
+type AutosavingStateStore struct {
+	*appservice.BasicStateStore
+	Path string
+}
+
+func NewAutosavingStateStore(path string) *AutosavingStateStore {
+	return &AutosavingStateStore{
+		BasicStateStore: appservice.NewBasicStateStore(),
+		Path:            path,
+	}
+}
+
+func (store *AutosavingStateStore) Save() error {
+	data, err := json.Marshal(store.BasicStateStore)
+	if err != nil {
+		return err
+	}
+
+	return ioutil.WriteFile(store.Path, data, 0600)
+}
+
+func (store *AutosavingStateStore) Load() error {
+	data, err := ioutil.ReadFile(store.Path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+
+	return json.Unmarshal(data, store.BasicStateStore)
+}
+
+func (store *AutosavingStateStore) MarkRegistered(userID string) {
+	store.BasicStateStore.MarkRegistered(userID)
+	store.Save()
+}
+
+func (store *AutosavingStateStore) SetMembership(roomID, userID, membership string) {
+	store.BasicStateStore.SetMembership(roomID, userID, membership)
+	store.Save()
+}