1 files changed, 87 insertions, 0 deletions
diff --git a/internal/api/client/media/mediaupdate.go b/internal/api/client/media/mediaupdate.go
new file mode 100644
index 000000000..29ab04947
--- /dev/null
+++ b/internal/api/client/media/mediaupdate.go
@@ -0,0 +1,87 @@
+package media
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+/*
+   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/>.
+*/
+
+// MediaPUTHandler allows the owner of an attachment to update information about that attachment before it's used in a status.
+func (m *Module) MediaPUTHandler(c *gin.Context) {
+	l := m.log.WithField("func", "MediaGETHandler")
+	authed, err := oauth.Authed(c, true, true, true, true)
+	if err != nil {
+		l.Debugf("couldn't auth: %s", err)
+		c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
+		return
+	}
+
+	attachmentID := c.Param(IDKey)
+	if attachmentID == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "no attachment ID given in request"})
+		return
+	}
+
+	// extract the media update form from the request context
+	l.Tracef("parsing request form: %s", c.Request.Form)
+	var form model.AttachmentUpdateRequest
+	if err := c.ShouldBind(&form); err != nil {
+		l.Debugf("could not parse form from request: %s", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "missing one or more required form values"})
+		return
+	}
+
+	// Give the fields on the request form a first pass to make sure the request is superficially valid.
+	l.Tracef("validating form %+v", form)
+	if err := validateUpdateMedia(&form, m.config.MediaConfig); err != nil {
+		l.Debugf("error validating form: %s", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	attachment, errWithCode := m.processor.MediaUpdate(authed, attachmentID, &form)
+	if errWithCode != nil {
+		c.JSON(errWithCode.Code(), gin.H{"error": errWithCode.Safe()})
+		return
+	}
+
+	c.JSON(http.StatusOK, attachment)
+}
+
+func validateUpdateMedia(form *model.AttachmentUpdateRequest, config *config.MediaConfig) error {
+
+	if form.Description != nil {
+		if len(*form.Description) < config.MinDescriptionChars || len(*form.Description) > config.MaxDescriptionChars {
+			return fmt.Errorf("image description length must be between %d and %d characters (inclusive), but provided image description was %d chars", config.MinDescriptionChars, config.MaxDescriptionChars, len(*form.Description))
+		}
+	}
+
+	if form.Focus == nil && form.Description == nil {
+		return errors.New("focus and description were both nil, there's nothing to update")
+	}
+
+	return nil
+}