gotosocial/internal/processing/media/create.go

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/*
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 media
import (
"bytes"
"context"
"errors"
"fmt"
"io"
"time"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/text"
)
func (p *processor) Create(ctx context.Context, account *gtsmodel.Account, form *apimodel.AttachmentRequest) (*apimodel.Attachment, error) {
// open the attachment and extract the bytes from it
f, err := form.File.Open()
if err != nil {
return nil, fmt.Errorf("error opening attachment: %s", err)
}
buf := new(bytes.Buffer)
size, err := io.Copy(buf, f)
if err != nil {
return nil, fmt.Errorf("error reading attachment: %s", err)
}
if size == 0 {
return nil, errors.New("could not read provided attachment: size 0 bytes")
}
// now parse the focus parameter
focusx, focusy, err := parseFocus(form.Focus)
if err != nil {
return nil, fmt.Errorf("couldn't parse attachment focus: %s", err)
}
minAttachment := &gtsmodel.MediaAttachment{
CreatedAt: time.Now(),
UpdatedAt: time.Now(),
AccountID: account.ID,
Description: text.RemoveHTML(form.Description),
FileMeta: gtsmodel.FileMeta{
Focus: gtsmodel.Focus{
X: focusx,
Y: focusy,
},
},
}
// allow the mediaHandler to work its magic of processing the attachment bytes, and putting them in whatever storage backend we're using
attachment, err := p.mediaHandler.ProcessAttachment(ctx, buf.Bytes(), minAttachment)
if err != nil {
return nil, fmt.Errorf("error reading attachment: %s", err)
}
// prepare the frontend representation now -- if there are any errors here at least we can bail without
// having already put something in the database and then having to clean it up again (eugh)
mastoAttachment, err := p.tc.AttachmentToMasto(ctx, attachment)
if err != nil {
return nil, fmt.Errorf("error parsing media attachment to frontend type: %s", err)
}
// now we can confidently put the attachment in the database
if err := p.db.Put(ctx, attachment); err != nil {
return nil, fmt.Errorf("error storing media attachment in db: %s", err)
}
return &mastoAttachment, nil
}