1 files changed, 218 insertions, 0 deletions
diff --git a/internal/db/bundb/relationship_block.go b/internal/db/bundb/relationship_block.go
new file mode 100644
index 000000000..9232ea984
--- /dev/null
+++ b/internal/db/bundb/relationship_block.go
@@ -0,0 +1,218 @@
+// 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 bundb
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/log"
+	"github.com/uptrace/bun"
+)
+
+func (r *relationshipDB) IsBlocked(ctx context.Context, sourceAccountID string, targetAccountID string) (bool, db.Error) {
+	block, err := r.GetBlock(
+		gtscontext.SetBarebones(ctx),
+		sourceAccountID,
+		targetAccountID,
+	)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		return false, err
+	}
+	return (block != nil), nil
+}
+
+func (r *relationshipDB) IsEitherBlocked(ctx context.Context, accountID1 string, accountID2 string) (bool, error) {
+	// Look for a block in direction of account1->account2
+	b1, err := r.IsBlocked(ctx, accountID1, accountID2)
+	if err != nil || b1 {
+		return true, err
+	}
+
+	// Look for a block in direction of account2->account1
+	b2, err := r.IsBlocked(ctx, accountID2, accountID1)
+	if err != nil || b2 {
+		return true, err
+	}
+
+	return false, nil
+}
+
+func (r *relationshipDB) GetBlockByID(ctx context.Context, id string) (*gtsmodel.Block, error) {
+	return r.getBlock(
+		ctx,
+		"ID",
+		func(block *gtsmodel.Block) error {
+			return r.conn.NewSelect().Model(block).
+				Where("? = ?", bun.Ident("block.id"), id).
+				Scan(ctx)
+		},
+		id,
+	)
+}
+
+func (r *relationshipDB) GetBlockByURI(ctx context.Context, uri string) (*gtsmodel.Block, error) {
+	return r.getBlock(
+		ctx,
+		"URI",
+		func(block *gtsmodel.Block) error {
+			return r.conn.NewSelect().Model(block).
+				Where("? = ?", bun.Ident("block.uri"), uri).
+				Scan(ctx)
+		},
+		uri,
+	)
+}
+
+func (r *relationshipDB) GetBlock(ctx context.Context, sourceAccountID string, targetAccountID string) (*gtsmodel.Block, error) {
+	return r.getBlock(
+		ctx,
+		"AccountID.TargetAccountID",
+		func(block *gtsmodel.Block) error {
+			return r.conn.NewSelect().Model(block).
+				Where("? = ?", bun.Ident("block.account_id"), sourceAccountID).
+				Where("? = ?", bun.Ident("block.target_account_id"), targetAccountID).
+				Scan(ctx)
+		},
+		sourceAccountID,
+		targetAccountID,
+	)
+}
+
+func (r *relationshipDB) getBlock(ctx context.Context, lookup string, dbQuery func(*gtsmodel.Block) error, keyParts ...any) (*gtsmodel.Block, error) {
+	// Fetch block from cache with loader callback
+	block, err := r.state.Caches.GTS.Block().Load(lookup, func() (*gtsmodel.Block, error) {
+		var block gtsmodel.Block
+
+		// Not cached! Perform database query
+		if err := dbQuery(&block); err != nil {
+			return nil, r.conn.ProcessError(err)
+		}
+
+		return &block, nil
+	}, keyParts...)
+	if err != nil {
+		// already processe
+		return nil, err
+	}
+
+	if gtscontext.Barebones(ctx) {
+		// Only a barebones model was requested.
+		return block, nil
+	}
+
+	// Set the block source account
+	block.Account, err = r.state.DB.GetAccountByID(
+		gtscontext.SetBarebones(ctx),
+		block.AccountID,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("error getting block source account: %w", err)
+	}
+
+	// Set the block target account
+	block.TargetAccount, err = r.state.DB.GetAccountByID(
+		gtscontext.SetBarebones(ctx),
+		block.TargetAccountID,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("error getting block target account: %w", err)
+	}
+
+	return block, nil
+}
+
+func (r *relationshipDB) PutBlock(ctx context.Context, block *gtsmodel.Block) error {
+	err := r.state.Caches.GTS.Block().Store(block, func() error {
+		_, err := r.conn.NewInsert().Model(block).Exec(ctx)
+		return r.conn.ProcessError(err)
+	})
+	if err != nil {
+		return err
+	}
+
+	// Invalidate block origin account ID cached visibility.
+	r.state.Caches.Visibility.Invalidate("ItemID", block.AccountID)
+	r.state.Caches.Visibility.Invalidate("RequesterID", block.AccountID)
+
+	// Invalidate block target account ID cached visibility.
+	r.state.Caches.Visibility.Invalidate("ItemID", block.TargetAccountID)
+	r.state.Caches.Visibility.Invalidate("RequesterID", block.TargetAccountID)
+
+	return nil
+}
+
+func (r *relationshipDB) DeleteBlockByID(ctx context.Context, id string) error {
+	block, err := r.GetBlockByID(gtscontext.SetBarebones(ctx), id)
+	if err != nil {
+		return err
+	}
+	return r.deleteBlock(ctx, block)
+}
+
+func (r *relationshipDB) DeleteBlockByURI(ctx context.Context, uri string) error {
+	block, err := r.GetBlockByURI(gtscontext.SetBarebones(ctx), uri)
+	if err != nil {
+		return err
+	}
+	return r.deleteBlock(ctx, block)
+}
+
+func (r *relationshipDB) deleteBlock(ctx context.Context, block *gtsmodel.Block) error {
+	if _, err := r.conn.
+		NewDelete().
+		Table("blocks").
+		Where("? = ?", bun.Ident("id"), block.ID).
+		Exec(ctx); err != nil {
+		return r.conn.ProcessError(err)
+	}
+
+	// Invalidate block from cache lookups.
+	r.state.Caches.GTS.Block().Invalidate("ID", block.ID)
+
+	return nil
+}
+
+func (r *relationshipDB) DeleteAccountBlocks(ctx context.Context, accountID string) error {
+	var blockIDs []string
+
+	if err := r.conn.NewSelect().
+		Table("blocks").
+		ColumnExpr("?", bun.Ident("id")).
+		WhereOr("? = ? OR ? = ?",
+			bun.Ident("account_id"),
+			accountID,
+			bun.Ident("target_account_id"),
+			accountID,
+		).
+		Scan(ctx, &blockIDs); err != nil {
+		return r.conn.ProcessError(err)
+	}
+
+	for _, id := range blockIDs {
+		if err := r.DeleteBlockByID(ctx, id); err != nil {
+			log.Errorf(ctx, "error deleting block %q: %v", id, err)
+		}
+	}
+
+	return nil
+}