Block/unblock (#96)

* remote + local block logic, incl. federation

* improve blocking stuff

* fiddle with display of blocked profiles

* go fmt

internal/db/db.go

@@ -159,6 +159,8 @@ type DB interface {
 	// In case of no entries, a 'no entries' error will be returned
 	GetStatusesForAccount(accountID string, limit int, excludeReplies bool, maxID string, pinnedOnly bool, mediaOnly bool) ([]*gtsmodel.Status, error)
 
+	GetBlocksForAccount(accountID string, maxID string, sinceID string, limit int) ([]*gtsmodel.Account, string, string, error)
+
 	// GetLastStatusForAccountID simply gets the most recent status by the given account.
 	// The given slice 'status' pointer will be set to the result of the query, whatever it is.
 	// In case of no entries, a 'no entries' error will be returned

internal/db/pg/blocks.go

@@ -0,0 +1,67 @@
+/*
+   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 (
+	"github.com/go-pg/pg/v10"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+func (ps *postgresService) GetBlocksForAccount(accountID string, maxID string, sinceID string, limit int) ([]*gtsmodel.Account, string, string, error) {
+	blocks := []*gtsmodel.Block{}
+
+	fq := ps.conn.Model(&blocks).
+		Where("block.account_id = ?", accountID).
+		Relation("TargetAccount").
+		Order("block.id DESC")
+
+	if maxID != "" {
+		fq = fq.Where("block.id < ?", maxID)
+	}
+
+	if sinceID != "" {
+		fq = fq.Where("block.id > ?", sinceID)
+	}
+
+	if limit > 0 {
+		fq = fq.Limit(limit)
+	}
+
+	err := fq.Select()
+	if err != nil {
+		if err == pg.ErrNoRows {
+			return nil, "", "", db.ErrNoEntries{}
+		}
+		return nil, "", "", err
+	}
+
+	if len(blocks) == 0 {
+		return nil, "", "", db.ErrNoEntries{}
+	}
+
+	accounts := []*gtsmodel.Account{}
+	for _, b := range blocks {
+		accounts = append(accounts, b.TargetAccount)
+	}
+
+	nextMaxID := blocks[len(blocks)-1].ID
+	prevMinID := blocks[0].ID
+	return accounts, nextMaxID, prevMinID, nil
+}