[feature] Unused avatar and header cleanup (#574)

* rename + tidy up remote pruning

* fix media attachment account join
see https://bun.uptrace.dev/guide/golang-orm.html#table-relationships

* update logging to new function name

* add get avatars and headers to bun

* add pruneallmeta function

* don't set uncached since we're deleting anyway

* fix totalPruned being in wrong place

* test pruning meta

* go fmt ./...

* rename mediaprune

* add meta pruning to routine mediaprune

* tidy up cleanup job scheduling

* rename adminmediaremoteprune

* update mediacleanup to use renamed prune func

* update swagger docs a little bit

* reuse cancel + context

1 files changed, 54 insertions, 0 deletions

diff --git a/internal/processing/admin/mediaprune.go b/internal/processing/admin/mediaprune.go
new file mode 100644
index 000000000..0e6abe028
--- /dev/null
+++ b/internal/processing/admin/mediaprune.go
@@ -0,0 +1,54 @@
+/*
+   GoToSocial
+   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
+
+   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 <http://www.gnu.org/licenses/>.
+*/
+
+package admin
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+)
+
+func (p *processor) MediaPrune(ctx context.Context, mediaRemoteCacheDays int) gtserror.WithCode {
+	if mediaRemoteCacheDays < 0 {
+		err := fmt.Errorf("MediaPrune: invalid value for mediaRemoteCacheDays prune: value was %d, cannot be less than 0", mediaRemoteCacheDays)
+		return gtserror.NewErrorBadRequest(err, err.Error())
+	}
+
+	go func() {
+		pruned, err := p.mediaManager.PruneAllRemote(ctx, mediaRemoteCacheDays)
+		if err != nil {
+			logrus.Errorf("MediaPrune: error pruning remote cache: %s", err)
+		} else {
+			logrus.Infof("MediaPrune: pruned %d remote cache entries", pruned)
+		}
+	}()
+
+	go func() {
+		pruned, err := p.mediaManager.PruneAllMeta(ctx)
+		if err != nil {
+			logrus.Errorf("MediaPrune: error pruning meta: %s", err)
+		} else {
+			logrus.Infof("MediaPrune: pruned %d meta entries", pruned)
+		}
+	}()
+
+	return nil
+}