Add dump command (#592)

Fix files location in dump

Fix gitignore

Add docs

Add dumps to gitignore

Move dump to seperate package

logging

Dump files

Dump version

Dump database

Dump config

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/592

pkg/files/dump.go

@@ -0,0 +1,43 @@
+// Vikunja is a to-do list application to facilitate your life.
+// Copyright 2018-2020 Vikunja and contributors. All rights reserved.
+//
+// This program 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.
+//
+// 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package files
+
+import "bytes"
+
+// Dump dumps all saved files
+// This only includes the raw files, no db entries.
+func Dump() (allFiles map[int64][]byte, err error) {
+	files := []*File{}
+	err = x.Find(&files)
+	if err != nil {
+		return
+	}
+
+	allFiles = make(map[int64][]byte, len(files))
+	for _, file := range files {
+		if err := file.LoadFileByID(); err != nil {
+			return nil, err
+		}
+		var buf bytes.Buffer
+		if _, err := buf.ReadFrom(file.File); err != nil {
+			return nil, err
+		}
+		allFiles[file.ID] = buf.Bytes()
+	}
+
+	return
+}