[chore] Refactor account deleting/block logic, tidy up some other processing things (#1599)

* start refactoring account deletion

* update to use state.DB

* further messing about

* some more tidying up

* more tidying, cleaning, nice-making

* further adventures in refactoring and the woes of technical debt

* update fr accept/reject

* poking + prodding

* fix up deleting

* create fave uri

* don't log using requestingAccount.ID because it might be nil

* move getBookmarks function

* use exists query to check for status bookmark

* use deletenotifications func

* fiddle

* delete follow request notif

* split up some db functions

* Fix possible nil pointer panic

* fix more possible nil pointers

* fix license headers

* warn when follow missing (target) account

* return wrapped err when bookmark/fave models can't be retrieved

* simplify self account delete

* warn log likely race condition

* de-sillify status delete loop

* move error check due north

* warn when unfollowSideEffects has no target account

* warn when no boost account is found

* warn + dump follow when no account

* more warnings

* warn on fave account not set

* move for loop inside anonymous function

* fix funky logic

* don't remove mutual account items on block;
do make sure unfollow occurs in both directions!

1 files changed, 63 insertions, 0 deletions

diff --git a/internal/db/statusfave.go b/internal/db/statusfave.go
new file mode 100644
index 000000000..2d55592aa
--- /dev/null
+++ b/internal/db/statusfave.go
@@ -0,0 +1,63 @@
+// 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 db
+
+import (
+	"context"
+
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+type StatusFave interface {
+	// GetStatusFave returns one status fave with the given id.
+	GetStatusFave(ctx context.Context, id string) (*gtsmodel.StatusFave, Error)
+
+	// GetStatusFaveByAccountID gets one status fave created by the given
+	// accountID, targeting the given statusID.
+	GetStatusFaveByAccountID(ctx context.Context, accountID string, statusID string) (*gtsmodel.StatusFave, Error)
+
+	// GetStatusFaves returns a slice of faves/likes of the given status.
+	// This slice will be unfiltered, not taking account of blocks and whatnot, so filter it before serving it back to a user.
+	GetStatusFaves(ctx context.Context, statusID string) ([]*gtsmodel.StatusFave, Error)
+
+	// PutStatusFave inserts the given statusFave into the database.
+	PutStatusFave(ctx context.Context, statusFave *gtsmodel.StatusFave) Error
+
+	// DeleteStatusFave deletes one status fave with the given id.
+	DeleteStatusFave(ctx context.Context, id string) Error
+
+	// DeleteStatusFaves mass deletes status faves targeting targetAccountID
+	// and/or originating from originAccountID and/or faving statusID.
+	//
+	// If targetAccountID is set and originAccountID isn't, all status faves
+	// that target the given account will be deleted.
+	//
+	// If originAccountID is set and targetAccountID isn't, all status faves
+	// originating from the given account will be deleted.
+	//
+	// If both are set, then status faves that target targetAccountID and
+	// originate from originAccountID will be deleted.
+	//
+	// At least one parameter must not be an empty string.
+	DeleteStatusFaves(ctx context.Context, targetAccountID string, originAccountID string) Error
+
+	// DeleteStatusFavesForStatus deletes all status faves that target the
+	// given status ID. This is useful when a status has been deleted, and you need
+	// to clean up after it.
+	DeleteStatusFavesForStatus(ctx context.Context, statusID string) Error
+}