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openGraph.go
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openGraph.go
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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package api4
import (
"net/http"
"github.com/mattermost/mattermost-server/v6/model"
"github.com/mattermost/mattermost-server/v6/shared/mlog"
)
func (api *API) InitOpenGraph() {
api.BaseRoutes.OpenGraph.Handle("", api.APISessionRequired(getOpenGraphMetadata)).Methods("POST")
}
func getOpenGraphMetadata(c *Context, w http.ResponseWriter, r *http.Request) {
if !*c.App.Config().ServiceSettings.EnableLinkPreviews {
c.Err = model.NewAppError("getOpenGraphMetadata", "api.post.link_preview_disabled.app_error", nil, "", http.StatusNotImplemented)
return
}
props := model.StringInterfaceFromJSON(r.Body)
url := ""
ok := false
if url, ok = props["url"].(string); url == "" || !ok {
c.SetInvalidParam("url")
return
}
buf, err := c.App.GetOpenGraphMetadata(url)
if err != nil {
mlog.Warn("GetOpenGraphMetadata request failed",
mlog.String("requestURL", url),
mlog.Err(err))
w.Write([]byte(`{"url": ""}`))
return
}
w.Write(buf)
}