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// 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) GetFollowByID(ctx context.Context, id string) (*gtsmodel.Follow, error) {
return r.getFollow(
ctx,
"ID",
func(follow *gtsmodel.Follow) error {
return r.conn.NewSelect().
Model(follow).
Where("? = ?", bun.Ident("id"), id).
Scan(ctx)
},
id,
)
}
func (r *relationshipDB) GetFollowByURI(ctx context.Context, uri string) (*gtsmodel.Follow, error) {
return r.getFollow(
ctx,
"URI",
func(follow *gtsmodel.Follow) error {
return r.conn.NewSelect().
Model(follow).
Where("? = ?", bun.Ident("uri"), uri).
Scan(ctx)
},
uri,
)
}
func (r *relationshipDB) GetFollow(ctx context.Context, sourceAccountID string, targetAccountID string) (*gtsmodel.Follow, error) {
return r.getFollow(
ctx,
"AccountID.TargetAccountID",
func(follow *gtsmodel.Follow) error {
return r.conn.NewSelect().
Model(follow).
Where("? = ?", bun.Ident("account_id"), sourceAccountID).
Where("? = ?", bun.Ident("target_account_id"), targetAccountID).
Scan(ctx)
},
sourceAccountID,
targetAccountID,
)
}
func (r *relationshipDB) GetFollowsByIDs(ctx context.Context, ids []string) ([]*gtsmodel.Follow, error) {
// Preallocate slice of expected length.
follows := make([]*gtsmodel.Follow, 0, len(ids))
for _, id := range ids {
// Fetch follow model for this ID.
follow, err := r.GetFollowByID(ctx, id)
if err != nil {
log.Errorf(ctx, "error getting follow %q: %v", id, err)
continue
}
// Append to return slice.
follows = append(follows, follow)
}
return follows, nil
}
func (r *relationshipDB) IsFollowing(ctx context.Context, sourceAccountID string, targetAccountID string) (bool, db.Error) {
follow, err := r.GetFollow(
gtscontext.SetBarebones(ctx),
sourceAccountID,
targetAccountID,
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return false, err
}
return (follow != nil), nil
}
func (r *relationshipDB) IsMutualFollowing(ctx context.Context, accountID1 string, accountID2 string) (bool, db.Error) {
// make sure account 1 follows account 2
f1, err := r.IsFollowing(ctx,
accountID1,
accountID2,
)
if !f1 /* f1 = false when err != nil */ {
return false, err
}
// make sure account 2 follows account 1
f2, err := r.IsFollowing(ctx,
accountID2,
accountID1,
)
if !f2 /* f2 = false when err != nil */ {
return false, err
}
return true, nil
}
func (r *relationshipDB) getFollow(ctx context.Context, lookup string, dbQuery func(*gtsmodel.Follow) error, keyParts ...any) (*gtsmodel.Follow, error) {
// Fetch follow from database cache with loader callback
follow, err := r.state.Caches.GTS.Follow().Load(lookup, func() (*gtsmodel.Follow, error) {
var follow gtsmodel.Follow
// Not cached! Perform database query
if err := dbQuery(&follow); err != nil {
return nil, r.conn.ProcessError(err)
}
return &follow, nil
}, keyParts...)
if err != nil {
// error already processed
return nil, err
}
if gtscontext.Barebones(ctx) {
// Only a barebones model was requested.
return follow, nil
}
// Set the follow source account
follow.Account, err = r.state.DB.GetAccountByID(
gtscontext.SetBarebones(ctx),
follow.AccountID,
)
if err != nil {
return nil, fmt.Errorf("error getting follow source account: %w", err)
}
// Set the follow target account
follow.TargetAccount, err = r.state.DB.GetAccountByID(
gtscontext.SetBarebones(ctx),
follow.TargetAccountID,
)
if err != nil {
return nil, fmt.Errorf("error getting follow target account: %w", err)
}
return follow, nil
}
func (r *relationshipDB) PutFollow(ctx context.Context, follow *gtsmodel.Follow) error {
err := r.state.Caches.GTS.Follow().Store(follow, func() error {
_, err := r.conn.NewInsert().Model(follow).Exec(ctx)
return r.conn.ProcessError(err)
})
if err != nil {
return err
}
// Invalidate follow origin account ID cached visibility.
r.state.Caches.Visibility.Invalidate("ItemID", follow.AccountID)
r.state.Caches.Visibility.Invalidate("RequesterID", follow.AccountID)
// Invalidate follow target account ID cached visibility.
r.state.Caches.Visibility.Invalidate("ItemID", follow.TargetAccountID)
r.state.Caches.Visibility.Invalidate("RequesterID", follow.TargetAccountID)
return nil
}
func (r *relationshipDB) DeleteFollowByID(ctx context.Context, id string) error {
if _, err := r.conn.NewDelete().
Table("follows").
Where("? = ?", bun.Ident("id"), id).
Exec(ctx); err != nil {
return r.conn.ProcessError(err)
}
// Invalidate follow from cache lookups.
r.state.Caches.GTS.Follow().Invalidate("ID", id)
return nil
}
func (r *relationshipDB) DeleteFollowByURI(ctx context.Context, uri string) error {
if _, err := r.conn.NewDelete().
Table("follows").
Where("? = ?", bun.Ident("uri"), uri).
Exec(ctx); err != nil {
return r.conn.ProcessError(err)
}
// Invalidate follow from cache lookups.
r.state.Caches.GTS.Follow().Invalidate("URI", uri)
return nil
}
func (r *relationshipDB) DeleteAccountFollows(ctx context.Context, accountID string) error {
var followIDs []string
if _, err := r.conn.
NewDelete().
Table("follows").
WhereOr("? = ? OR ? = ?",
bun.Ident("account_id"),
accountID,
bun.Ident("target_account_id"),
accountID,
).
Returning("?", bun.Ident("id")).
Exec(ctx, &followIDs); err != nil {
return r.conn.ProcessError(err)
}
// Invalidate each returned ID.
for _, id := range followIDs {
r.state.Caches.GTS.Follow().Invalidate("ID", id)
}
return nil
}
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