[feature] Show info for pending replies, allow implicit accept of pending replies (#3322)

* [feature] Allow implicit accept of pending replies

* update wording

internal/processing/status/util.go

@@ -0,0 +1,72 @@
+// 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 status
+
+import (
+	"context"
+	"errors"
+
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
+)
+
+func (p *Processor) implicitlyAccept(
+	ctx context.Context,
+	requester *gtsmodel.Account,
+	status *gtsmodel.Status,
+) (bool, gtserror.WithCode) {
+	if status.InReplyToAccountID != requester.ID {
+		// Status doesn't reply to us,
+		// we can't accept on behalf
+		// of someone else.
+		return false, nil
+	}
+
+	targetPendingApproval := util.PtrOrValue(status.PendingApproval, false)
+	if !targetPendingApproval {
+		// Status isn't pending approval,
+		// nothing to implicitly accept.
+		return false, nil
+	}
+
+	// Status is pending approval,
+	// check for an interaction request.
+	intReq, err := p.state.DB.GetInteractionRequestByInteractionURI(ctx, status.URI)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		// Something's gone wrong.
+		err := gtserror.Newf("db error getting interaction request for %s: %w", status.URI, err)
+		return false, gtserror.NewErrorInternalError(err)
+	}
+
+	// No interaction request present
+	// for this status. Race condition?
+	if intReq == nil {
+		return false, nil
+	}
+
+	// Accept the interaction.
+	if _, errWithCode := p.intReqs.Accept(ctx,
+		requester, intReq.ID,
+	); errWithCode != nil {
+		return false, errWithCode
+	}
+
+	return true, nil
+}