[performance] cache mute check results (#4202)

This separates our the user mute handling from the typeconverter code, and creates a new "mutes" filter type (in a similar vein to the visibility filter) subpkg with its own result cache. This is a heavy mix of both chore given that mute calculation shouldn't have been handled in the conversion to frontend API types, and a performance bonus since we don't need to load and calculate so many things each time, just the single result each time with all necessary invalidation handled by database cache hooks.

Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4202
Co-authored-by: kim <grufwub@gmail.com>
Co-committed-by: kim <grufwub@gmail.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/internal/filter/mutes/filter.go b/internal/filter/mutes/filter.go
new file mode 100644
index 000000000..20adc3daf
--- /dev/null
+++ b/internal/filter/mutes/filter.go
@@ -0,0 +1,45 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 mutes
+
+import (
+	"time"
+
+	"code.superseriousbusiness.org/gotosocial/internal/state"
+)
+
+type muteDetails struct {
+	// mute flags.
+	mute  bool
+	notif bool
+
+	// mute expiry times.
+	muteExpiry  time.Time
+	notifExpiry time.Time
+}
+
+// noauth is a placeholder ID used in cache lookups
+// when there is no authorized account ID to use.
+const noauth = "noauth"
+
+// Filter packages up a bunch of logic for checking whether
+// given statuses or accounts are muted by a requester (user).
+type Filter struct{ state *state.State }
+
+// NewFilter returns a new Filter interface that will use the provided database.
+func NewFilter(state *state.State) *Filter { return &Filter{state: state} }