[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, 5 insertions, 3 deletions

diff --git a/internal/processing/notification.go b/internal/processing/notification.go
index 3f88d5441..aa81d863a 100644
--- a/internal/processing/notification.go
+++ b/internal/processing/notification.go
@@ -19,8 +19,10 @@ package processing
 
 import (
 	"context"
+	"errors"
 
 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/log"
 	"github.com/superseriousbusiness/gotosocial/internal/oauth"
@@ -39,7 +41,7 @@ func (p *Processor) NotificationsGet(ctx context.Context, authed *oauth.Auth, ex
 		return util.EmptyPageableResponse(), nil
 	}
 
-	items := []interface{}{}
+	items := make([]interface{}, 0, count)
 	nextMaxIDValue := ""
 	prevMinIDValue := ""
 	for i, n := range notifs {
@@ -71,8 +73,8 @@ func (p *Processor) NotificationsGet(ctx context.Context, authed *oauth.Auth, ex
 }
 
 func (p *Processor) NotificationsClear(ctx context.Context, authed *oauth.Auth) gtserror.WithCode {
-	err := p.state.DB.ClearNotifications(ctx, authed.Account.ID)
-	if err != nil {
+	// Delete all notifications that target the authorized account.
+	if err := p.state.DB.DeleteNotifications(ctx, authed.Account.ID, ""); err != nil && !errors.Is(err, db.ErrNoEntries) {
 		return gtserror.NewErrorInternalError(err)
 	}