gotosocial/internal/db/bundb/relationship.go

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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"
"database/sql"
"errors"
"fmt"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/state"
"github.com/uptrace/bun"
)
type relationshipDB struct {
conn *DBConn
state *state.State
}
func (r *relationshipDB) newFollowQ(follow interface{}) *bun.SelectQuery {
return r.conn.
NewSelect().
Model(follow).
Relation("Account").
Relation("TargetAccount")
}
func (r *relationshipDB) IsBlocked(ctx context.Context, account1 string, account2 string, eitherDirection bool) (bool, db.Error) {
// Look for a block in direction of account1->account2
block1, err := r.getBlock(ctx, account1, account2)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return false, err
}
if block1 != nil {
// account1 blocks account2
return true, nil
} else if !eitherDirection {
// Don't check for mutli-directional
return false, nil
}
// Look for a block in direction of account2->account1
block2, err := r.getBlock(ctx, account2, account1)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return false, err
}
return (block2 != nil), nil
}
func (r *relationshipDB) GetBlock(ctx context.Context, account1 string, account2 string) (*gtsmodel.Block, db.Error) {
// Fetch block from database
block, err := r.getBlock(ctx, account1, account2)
if err != nil {
return nil, err
}
// Set the block originating account
block.Account, err = r.state.DB.GetAccountByID(ctx, block.AccountID)
if err != nil {
return nil, err
}
// Set the block target account
block.TargetAccount, err = r.state.DB.GetAccountByID(ctx, block.TargetAccountID)
if err != nil {
return nil, err
}
return block, nil
}
func (r *relationshipDB) getBlock(ctx context.Context, account1 string, account2 string) (*gtsmodel.Block, db.Error) {
return r.state.Caches.GTS.Block().Load("AccountID.TargetAccountID", func() (*gtsmodel.Block, error) {
var block gtsmodel.Block
q := r.conn.NewSelect().Model(&block).
Where("? = ?", bun.Ident("block.account_id"), account1).
Where("? = ?", bun.Ident("block.target_account_id"), account2)
if err := q.Scan(ctx); err != nil {
return nil, r.conn.ProcessError(err)
}
return &block, nil
}, account1, account2)
}
func (r *relationshipDB) PutBlock(ctx context.Context, block *gtsmodel.Block) db.Error {
return r.state.Caches.GTS.Block().Store(block, func() error {
_, err := r.conn.NewInsert().Model(block).Exec(ctx)
return r.conn.ProcessError(err)
})
}
func (r *relationshipDB) DeleteBlockByID(ctx context.Context, id string) db.Error {
if _, err := r.conn.
NewDelete().
TableExpr("? AS ?", bun.Ident("blocks"), bun.Ident("block")).
Where("? = ?", bun.Ident("block.id"), id).
Exec(ctx); err != nil {
return r.conn.ProcessError(err)
}
// Drop any old value from cache by this ID
r.state.Caches.GTS.Block().Invalidate("ID", id)
return nil
}
func (r *relationshipDB) DeleteBlockByURI(ctx context.Context, uri string) db.Error {
if _, err := r.conn.
NewDelete().
TableExpr("? AS ?", bun.Ident("blocks"), bun.Ident("block")).
Where("? = ?", bun.Ident("block.uri"), uri).
Exec(ctx); err != nil {
return r.conn.ProcessError(err)
}
// Drop any old value from cache by this URI
r.state.Caches.GTS.Block().Invalidate("URI", uri)
return nil
}
func (r *relationshipDB) DeleteBlocksByOriginAccountID(ctx context.Context, originAccountID string) db.Error {
blockIDs := []string{}
q := r.conn.
NewSelect().
TableExpr("? AS ?", bun.Ident("blocks"), bun.Ident("block")).
Column("block.id").
Where("? = ?", bun.Ident("block.account_id"), originAccountID)
if err := q.Scan(ctx, &blockIDs); err != nil {
return r.conn.ProcessError(err)
}
for _, blockID := range blockIDs {
if err := r.DeleteBlockByID(ctx, blockID); err != nil {
return err
}
}
return nil
}
func (r *relationshipDB) DeleteBlocksByTargetAccountID(ctx context.Context, targetAccountID string) db.Error {
blockIDs := []string{}
q := r.conn.
NewSelect().
TableExpr("? AS ?", bun.Ident("blocks"), bun.Ident("block")).
Column("block.id").
Where("? = ?", bun.Ident("block.target_account_id"), targetAccountID)
if err := q.Scan(ctx, &blockIDs); err != nil {
return r.conn.ProcessError(err)
}
for _, blockID := range blockIDs {
if err := r.DeleteBlockByID(ctx, blockID); err != nil {
return err
}
}
return nil
}
func (r *relationshipDB) GetRelationship(ctx context.Context, requestingAccount string, targetAccount string) (*gtsmodel.Relationship, db.Error) {
rel := &gtsmodel.Relationship{
ID: targetAccount,
}
// check if the requesting account follows the target account
follow := &gtsmodel.Follow{}
if err := r.conn.
NewSelect().
Model(follow).
Column("follow.show_reblogs", "follow.notify").
Where("? = ?", bun.Ident("follow.account_id"), requestingAccount).
Where("? = ?", bun.Ident("follow.target_account_id"), targetAccount).
Limit(1).
Scan(ctx); err != nil {
if err := r.conn.ProcessError(err); err != db.ErrNoEntries {
return nil, fmt.Errorf("GetRelationship: error fetching follow: %s", err)
}
// no follow exists so these are all false
rel.Following = false
rel.ShowingReblogs = false
rel.Notifying = false
} else {
// follow exists so we can fill these fields out...
rel.Following = true
rel.ShowingReblogs = *follow.ShowReblogs
rel.Notifying = *follow.Notify
}
// check if the target account follows the requesting account
followedByQ := r.conn.
NewSelect().
TableExpr("? AS ?", bun.Ident("follows"), bun.Ident("follow")).
Column("follow.id").
Where("? = ?", bun.Ident("follow.account_id"), targetAccount).
Where("? = ?", bun.Ident("follow.target_account_id"), requestingAccount)
followedBy, err := r.conn.Exists(ctx, followedByQ)
if err != nil {
return nil, fmt.Errorf("GetRelationship: error checking followedBy: %s", err)
}
rel.FollowedBy = followedBy
// check if there's a pending following request from requesting account to target account
requestedQ := r.conn.
NewSelect().
TableExpr("? AS ?", bun.Ident("follow_requests"), bun.Ident("follow_request")).
Column("follow_request.id").
Where("? = ?", bun.Ident("follow_request.account_id"), requestingAccount).
Where("? = ?", bun.Ident("follow_request.target_account_id"), targetAccount)
requested, err := r.conn.Exists(ctx, requestedQ)
if err != nil {
return nil, fmt.Errorf("GetRelationship: error checking requested: %s", err)
}
rel.Requested = requested
// check if the requesting account is blocking the target account
blockA2T, err := r.getBlock(ctx, requestingAccount, targetAccount)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return nil, fmt.Errorf("GetRelationship: error checking blocking: %s", err)
}
rel.Blocking = (blockA2T != nil)
// check if the requesting account is blocked by the target account
blockT2A, err := r.getBlock(ctx, targetAccount, requestingAccount)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return nil, fmt.Errorf("GetRelationship: error checking blockedBy: %s", err)
}
rel.BlockedBy = (blockT2A != nil)
return rel, nil
}
func (r *relationshipDB) IsFollowing(ctx context.Context, sourceAccount *gtsmodel.Account, targetAccount *gtsmodel.Account) (bool, db.Error) {
if sourceAccount == nil || targetAccount == nil {
return false, nil
}
q := r.conn.
NewSelect().
TableExpr("? AS ?", bun.Ident("follows"), bun.Ident("follow")).
Column("follow.id").
Where("? = ?", bun.Ident("follow.account_id"), sourceAccount.ID).
Where("? = ?", bun.Ident("follow.target_account_id"), targetAccount.ID)
return r.conn.Exists(ctx, q)
}
func (r *relationshipDB) IsFollowRequested(ctx context.Context, sourceAccount *gtsmodel.Account, targetAccount *gtsmodel.Account) (bool, db.Error) {
if sourceAccount == nil || targetAccount == nil {
return false, nil
}
q := r.conn.
NewSelect().
TableExpr("? AS ?", bun.Ident("follow_requests"), bun.Ident("follow_request")).
Column("follow_request.id").
Where("? = ?", bun.Ident("follow_request.account_id"), sourceAccount.ID).
Where("? = ?", bun.Ident("follow_request.target_account_id"), targetAccount.ID)
return r.conn.Exists(ctx, q)
}
func (r *relationshipDB) IsMutualFollowing(ctx context.Context, account1 *gtsmodel.Account, account2 *gtsmodel.Account) (bool, db.Error) {
if account1 == nil || account2 == nil {
return false, nil
}
// make sure account 1 follows account 2
f1, err := r.IsFollowing(ctx, account1, account2)
if err != nil {
return false, err
}
// make sure account 2 follows account 1
f2, err := r.IsFollowing(ctx, account2, account1)
if err != nil {
return false, err
}
return f1 && f2, nil
}
func (r *relationshipDB) AcceptFollowRequest(ctx context.Context, originAccountID string, targetAccountID string) (*gtsmodel.Follow, db.Error) {
var follow *gtsmodel.Follow
if err := r.conn.RunInTx(ctx, func(tx bun.Tx) error {
// get original follow request
followRequest := &gtsmodel.FollowRequest{}
if err := tx.
NewSelect().
Model(followRequest).
Where("? = ?", bun.Ident("follow_request.account_id"), originAccountID).
Where("? = ?", bun.Ident("follow_request.target_account_id"), targetAccountID).
Scan(ctx); err != nil {
return err
}
// create a new follow to 'replace' the request with
follow = &gtsmodel.Follow{
ID: followRequest.ID,
AccountID: originAccountID,
TargetAccountID: targetAccountID,
URI: followRequest.URI,
}
// if the follow already exists, just update the URI -- we don't need to do anything else
if _, err := tx.
NewInsert().
Model(follow).
On("CONFLICT (?,?) DO UPDATE set ? = ?", bun.Ident("account_id"), bun.Ident("target_account_id"), bun.Ident("uri"), follow.URI).
Exec(ctx); err != nil {
return err
}
// now remove the follow request
if _, err := tx.
NewDelete().
TableExpr("? AS ?", bun.Ident("follow_requests"), bun.Ident("follow_request")).
Where("? = ?", bun.Ident("follow_request.id"), followRequest.ID).
Exec(ctx); err != nil {
return err
}
return nil
}); err != nil {
return nil, r.conn.ProcessError(err)
}
// return the new follow
return follow, nil
}
func (r *relationshipDB) RejectFollowRequest(ctx context.Context, originAccountID string, targetAccountID string) (*gtsmodel.FollowRequest, db.Error) {
followRequest := &gtsmodel.FollowRequest{}
if err := r.conn.RunInTx(ctx, func(tx bun.Tx) error {
// get original follow request
if err := tx.
NewSelect().
Model(followRequest).
Where("? = ?", bun.Ident("follow_request.account_id"), originAccountID).
Where("? = ?", bun.Ident("follow_request.target_account_id"), targetAccountID).
Scan(ctx); err != nil {
return err
}
// now delete it from the database by ID
if _, err := tx.
NewDelete().
TableExpr("? AS ?", bun.Ident("follow_requests"), bun.Ident("follow_request")).
Where("? = ?", bun.Ident("follow_request.id"), followRequest.ID).
Exec(ctx); err != nil {
return err
}
return nil
}); err != nil {
return nil, r.conn.ProcessError(err)
}
// return the deleted follow request
return followRequest, nil
}
func (r *relationshipDB) GetAccountFollowRequests(ctx context.Context, accountID string) ([]*gtsmodel.FollowRequest, db.Error) {
followRequests := []*gtsmodel.FollowRequest{}
q := r.newFollowQ(&followRequests).
Where("? = ?", bun.Ident("follow_request.target_account_id"), accountID).
Order("follow_request.updated_at DESC")
if err := q.Scan(ctx); err != nil {
return nil, r.conn.ProcessError(err)
}
return followRequests, nil
}
func (r *relationshipDB) GetAccountFollows(ctx context.Context, accountID string) ([]*gtsmodel.Follow, db.Error) {
follows := []*gtsmodel.Follow{}
q := r.newFollowQ(&follows).
Where("? = ?", bun.Ident("follow.account_id"), accountID).
Order("follow.updated_at DESC")
if err := q.Scan(ctx); err != nil {
return nil, r.conn.ProcessError(err)
}
return follows, nil
}
func (r *relationshipDB) CountAccountFollows(ctx context.Context, accountID string, localOnly bool) (int, db.Error) {
q := r.conn.
NewSelect().
TableExpr("? AS ?", bun.Ident("follows"), bun.Ident("follow"))
if localOnly {
q = q.
Join("JOIN ? AS ? ON ? = ?", bun.Ident("accounts"), bun.Ident("account"), bun.Ident("follow.target_account_id"), bun.Ident("account.id")).
Where("? = ?", bun.Ident("follow.account_id"), accountID).
Where("? IS NULL", bun.Ident("account.domain"))
} else {
q = q.Where("? = ?", bun.Ident("follow.account_id"), accountID)
}
return q.Count(ctx)
}
func (r *relationshipDB) GetAccountFollowedBy(ctx context.Context, accountID string, localOnly bool) ([]*gtsmodel.Follow, db.Error) {
follows := []*gtsmodel.Follow{}
q := r.conn.
NewSelect().
Model(&follows).
Order("follow.updated_at DESC")
if localOnly {
q = q.
Join("JOIN ? AS ? ON ? = ?", bun.Ident("accounts"), bun.Ident("account"), bun.Ident("follow.account_id"), bun.Ident("account.id")).
Where("? = ?", bun.Ident("follow.target_account_id"), accountID).
Where("? IS NULL", bun.Ident("account.domain"))
} else {
q = q.Where("? = ?", bun.Ident("follow.target_account_id"), accountID)
}
err := q.Scan(ctx)
if err != nil && err != sql.ErrNoRows {
return nil, r.conn.ProcessError(err)
}
return follows, nil
}
func (r *relationshipDB) CountAccountFollowedBy(ctx context.Context, accountID string, localOnly bool) (int, db.Error) {
q := r.conn.
NewSelect().
TableExpr("? AS ?", bun.Ident("follows"), bun.Ident("follow"))
if localOnly {
q = q.
Join("JOIN ? AS ? ON ? = ?", bun.Ident("accounts"), bun.Ident("account"), bun.Ident("follow.account_id"), bun.Ident("account.id")).
Where("? = ?", bun.Ident("follow.target_account_id"), accountID).
Where("? IS NULL", bun.Ident("account.domain"))
} else {
q = q.Where("? = ?", bun.Ident("follow.target_account_id"), accountID)
}
return q.Count(ctx)
}