gotosocial/internal/api/s2s/user/followers.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 user
import (
"encoding/json"
"fmt"
"net/http"
"github.com/gin-gonic/gin"
"github.com/sirupsen/logrus"
)
// FollowersGETHandler returns a collection of URIs for followers of the target user, formatted so that other AP servers can understand it.
func (m *Module) FollowersGETHandler(c *gin.Context) {
l := m.log.WithFields(logrus.Fields{
"func": "FollowersGETHandler",
"url": c.Request.RequestURI,
})
requestedUsername := c.Param(UsernameKey)
if requestedUsername == "" {
c.JSON(http.StatusBadRequest, gin.H{"error": "no username specified in request"})
return
}
format, err := negotiateFormat(c)
if err != nil {
c.JSON(http.StatusNotAcceptable, gin.H{"error": fmt.Sprintf("could not negotiate format with given Accept header(s): %s", err)})
return
}
l.Tracef("negotiated format: %s", format)
ctx := transferContext(c)
followers, errWithCode := m.processor.GetFediFollowers(ctx, requestedUsername, c.Request.URL)
if errWithCode != nil {
l.Info(errWithCode.Error())
c.JSON(errWithCode.Code(), gin.H{"error": errWithCode.Safe()})
return
}
b, mErr := json.Marshal(followers)
if mErr != nil {
err := fmt.Errorf("could not marshal json: %s", mErr)
l.Error(err)
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
c.Data(http.StatusOK, format, b)
}