Blocklist import (#77)

* first steps on importing blocklists

* unblock domains properly

internal/processing/admin/deletedomainblock.go

@@ -1,7 +1,26 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 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 (
 	"fmt"
+	"time"
 
 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -32,5 +51,33 @@ func (p *processor) DomainBlockDelete(account *gtsmodel.Account, id string) (*ap
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
+	// remove the domain block reference from the instance, if we have an entry for it
+	i := &gtsmodel.Instance{}
+	if err := p.db.GetWhere([]db.Where{
+		{Key: "domain", Value: domainBlock.Domain, CaseInsensitive: true},
+		{Key: "domain_block_id", Value: id},
+	}, i); err == nil {
+		i.SuspendedAt = time.Time{}
+		i.DomainBlockID = ""
+		if err := p.db.UpdateByID(i.ID, i); err != nil {
+			return nil, gtserror.NewErrorInternalError(fmt.Errorf("couldn't update database entry for instance %s: %s", domainBlock.Domain, err))
+		}
+	}
+
+	// unsuspend all accounts whose suspension origin was this domain block
+	// 1. remove the 'suspended_at' entry from their accounts
+	if err := p.db.UpdateWhere([]db.Where{
+		{Key: "suspension_origin", Value: domainBlock.ID},
+	}, "suspended_at", nil, &[]*gtsmodel.Account{}); err != nil {
+		return nil, gtserror.NewErrorInternalError(fmt.Errorf("database error removing suspended_at from accounts: %s", err))
+	}
+
+	// 2. remove the 'suspension_origin' entry from their accounts
+	if err := p.db.UpdateWhere([]db.Where{
+		{Key: "suspension_origin", Value: domainBlock.ID},
+	}, "suspension_origin", nil, &[]*gtsmodel.Account{}); err != nil {
+		return nil, gtserror.NewErrorInternalError(fmt.Errorf("database error removing suspension_origin from accounts: %s", err))
+	}
+
 	return mastoDomainBlock, nil
 }