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/*
GoToSocial
Copyright (C) 2021-2023 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 account
import (
"context"
"fmt"
"github.com/superseriousbusiness/gotosocial/internal/ap"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/id"
"github.com/superseriousbusiness/gotosocial/internal/messages"
"github.com/superseriousbusiness/gotosocial/internal/uris"
)
func (p *processor) BlockCreate(ctx context.Context, requestingAccount *gtsmodel.Account, targetAccountID string) (*apimodel.Relationship, gtserror.WithCode) {
// make sure the target account actually exists in our db
targetAccount, err := p.db.GetAccountByID(ctx, targetAccountID)
if err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("BlockCreate: error getting account %s from the db: %s", targetAccountID, err))
}
// if requestingAccount already blocks target account, we don't need to do anything
if blocked, err := p.db.IsBlocked(ctx, requestingAccount.ID, targetAccountID, false); err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("BlockCreate: error checking existence of block: %s", err))
} else if blocked {
return p.RelationshipGet(ctx, requestingAccount, targetAccountID)
}
// don't block yourself, silly
if requestingAccount.ID == targetAccountID {
return nil, gtserror.NewErrorNotAcceptable(fmt.Errorf("BlockCreate: account %s cannot block itself", requestingAccount.ID))
}
// make the block
block := >smodel.Block{}
newBlockID, err := id.NewULID()
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
block.ID = newBlockID
block.AccountID = requestingAccount.ID
block.Account = requestingAccount
block.TargetAccountID = targetAccountID
block.TargetAccount = targetAccount
block.URI = uris.GenerateURIForBlock(requestingAccount.Username, newBlockID)
// whack it in the database
if err := p.db.PutBlock(ctx, block); err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("BlockCreate: error creating block in db: %s", err))
}
// clear any follows or follow requests from the blocked account to the target account -- this is a simple delete
if err := p.db.DeleteWhere(ctx, []db.Where{
{Key: "account_id", Value: targetAccountID},
{Key: "target_account_id", Value: requestingAccount.ID},
}, >smodel.Follow{}); err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("BlockCreate: error removing follow in db: %s", err))
}
if err := p.db.DeleteWhere(ctx, []db.Where{
{Key: "account_id", Value: targetAccountID},
{Key: "target_account_id", Value: requestingAccount.ID},
}, >smodel.FollowRequest{}); err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("BlockCreate: error removing follow in db: %s", err))
}
// clear any follows or follow requests from the requesting account to the target account --
// this might require federation so we need to pass some messages around
// check if a follow request exists from the requesting account to the target account, and remove it if it does (storing the URI for later)
var frChanged bool
var frURI string
fr := >smodel.FollowRequest{}
if err := p.db.GetWhere(ctx, []db.Where{
{Key: "account_id", Value: requestingAccount.ID},
{Key: "target_account_id", Value: targetAccountID},
}, fr); err == nil {
frURI = fr.URI
if err := p.db.DeleteByID(ctx, fr.ID, fr); err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("BlockCreate: error removing follow request from db: %s", err))
}
frChanged = true
}
// now do the same thing for any existing follow
var fChanged bool
var fURI string
f := >smodel.Follow{}
if err := p.db.GetWhere(ctx, []db.Where{
{Key: "account_id", Value: requestingAccount.ID},
{Key: "target_account_id", Value: targetAccountID},
}, f); err == nil {
fURI = f.URI
if err := p.db.DeleteByID(ctx, f.ID, f); err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("BlockCreate: error removing follow from db: %s", err))
}
fChanged = true
}
// follow request status changed so send the UNDO activity to the channel for async processing
if frChanged {
p.clientWorker.Queue(messages.FromClientAPI{
APObjectType: ap.ActivityFollow,
APActivityType: ap.ActivityUndo,
GTSModel: >smodel.Follow{
AccountID: requestingAccount.ID,
TargetAccountID: targetAccountID,
URI: frURI,
},
OriginAccount: requestingAccount,
TargetAccount: targetAccount,
})
}
// follow status changed so send the UNDO activity to the channel for async processing
if fChanged {
p.clientWorker.Queue(messages.FromClientAPI{
APObjectType: ap.ActivityFollow,
APActivityType: ap.ActivityUndo,
GTSModel: >smodel.Follow{
AccountID: requestingAccount.ID,
TargetAccountID: targetAccountID,
URI: fURI,
},
OriginAccount: requestingAccount,
TargetAccount: targetAccount,
})
}
// handle the rest of the block process asynchronously
p.clientWorker.Queue(messages.FromClientAPI{
APObjectType: ap.ActivityBlock,
APActivityType: ap.ActivityCreate,
GTSModel: block,
OriginAccount: requestingAccount,
TargetAccount: targetAccount,
})
return p.RelationshipGet(ctx, requestingAccount, targetAccountID)
}
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