Database updates (#144)

* start moving some database stuff around

* continue moving db stuff around

* more fiddling

* more updates

* and some more

* and yet more

* i broke SOMETHING but what, it's a mystery

* tidy up

* vendor ttlcache

* use ttlcache

* fix up some tests

* rename some stuff

* little reminder

* some more updates

internal/db/pg/domain.go

@@ -0,0 +1,83 @@
+/*
+   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 pg
+
+import (
+	"context"
+	"net/url"
+
+	"github.com/go-pg/pg/v10"
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
+)
+
+type domainDB struct {
+	config *config.Config
+	conn   *pg.DB
+	log    *logrus.Logger
+	cancel context.CancelFunc
+}
+
+func (d *domainDB) IsDomainBlocked(domain string) (bool, db.Error) {
+	if domain == "" {
+		return false, nil
+	}
+
+	blocked, err := d.conn.
+		Model(&gtsmodel.DomainBlock{}).
+		Where("LOWER(domain) = LOWER(?)", domain).
+		Exists()
+
+	err = processErrorResponse(err)
+
+	return blocked, err
+}
+
+func (d *domainDB) AreDomainsBlocked(domains []string) (bool, db.Error) {
+	// filter out any doubles
+	uniqueDomains := util.UniqueStrings(domains)
+
+	for _, domain := range uniqueDomains {
+		if blocked, err := d.IsDomainBlocked(domain); err != nil {
+			return false, err
+		} else if blocked {
+			return blocked, nil
+		}
+	}
+
+	// no blocks found
+	return false, nil
+}
+
+func (d *domainDB) IsURIBlocked(uri *url.URL) (bool, db.Error) {
+	domain := uri.Hostname()
+	return d.IsDomainBlocked(domain)
+}
+
+func (d *domainDB) AreURIsBlocked(uris []*url.URL) (bool, db.Error) {
+	domains := []string{}
+	for _, uri := range uris {
+		domains = append(domains, uri.Hostname())
+	}
+
+	return d.AreDomainsBlocked(domains)
+}