Launcher, app/base, sentry, update service

internal/config/cache/cache.go

@@ -0,0 +1,65 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Package cache provides access to contents inside a cache directory.
+package cache
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/ProtonMail/proton-bridge/pkg/files"
+)
+
+type Cache struct {
+	dir, version string
+}
+
+func New(dir, version string) (*Cache, error) {
+	if err := os.MkdirAll(filepath.Join(dir, version), 0700); err != nil {
+		return nil, err
+	}
+
+	return &Cache{
+		dir:     dir,
+		version: version,
+	}, nil
+}
+
+// GetDBDir returns folder for db files.
+func (c *Cache) GetDBDir() string {
+	return c.getCurrentCacheDir()
+}
+
+// GetIMAPCachePath returns path to file with IMAP status.
+func (c *Cache) GetIMAPCachePath() string {
+	return filepath.Join(c.getCurrentCacheDir(), "user_info.json")
+}
+
+// GetTransferDir returns folder for import-export rules files.
+func (c *Cache) GetTransferDir() string {
+	return c.getCurrentCacheDir()
+}
+
+// RemoveOldVersions removes any cache dirs that are not the current version.
+func (c *Cache) RemoveOldVersions() error {
+	return files.Remove(c.dir).Except(c.getCurrentCacheDir()).Do()
+}
+
+func (c *Cache) getCurrentCacheDir() string {
+	return filepath.Join(c.dir, c.version)
+}