diff options
Diffstat (limited to 'bskyweb/cmd')
| -rw-r--r-- | bskyweb/cmd/bskyweb/server.go | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/bskyweb/cmd/bskyweb/server.go b/bskyweb/cmd/bskyweb/server.go index e391b8b03..7571e536e 100644 --- a/bskyweb/cmd/bskyweb/server.go +++ b/bskyweb/cmd/bskyweb/server.go @@ -10,6 +10,7 @@ import ( "net/http" "os" "os/signal" + "slices" "strings" "syscall" "time" @@ -351,9 +352,54 @@ func (srv *Server) WebPost(c echo.Context) error { data["imgThumbUrls"] = thumbUrls } } + + data["postText"] = expandPostLinks(postView) + return c.Render(http.StatusOK, "post.html", data) } +// function to expand shortened links in rich text back to full urls, replacing shortened urls in +// social card meta tags and the noscript output. this essentially reverses the effect +// of shortenLinks() in src/lib/strings/rich-text-manip.ts +func expandPostLinks(postView *appbsky.FeedDefs_PostView) string { + if postView.Record != nil { + rec := postView.Record.Val.(*appbsky.FeedPost) + postText := rec.Text + var charsAdded int64 = 0 + // iterate over facets, check if they're link facets, and if found, grab the uri + for _, facet := range rec.Facets { + linkUri := "" + if slices.ContainsFunc(facet.Features, func(feat *appbsky.RichtextFacet_Features_Elem) bool { + if feat.RichtextFacet_Link != nil && feat.RichtextFacet_Link.LexiconTypeID == "app.bsky.richtext.facet#link" { + linkUri = feat.RichtextFacet_Link.Uri + // only expand uris that have been shortened (as opposed to those with non-uri anchor text) + if int64(len(postText)) >= facet.Index.ByteEnd+charsAdded && + strings.HasSuffix(postText[facet.Index.ByteStart+charsAdded:facet.Index.ByteEnd+charsAdded], "...") && + strings.Contains(linkUri, postText[facet.Index.ByteStart+charsAdded:(facet.Index.ByteEnd+charsAdded)-3]) { + return true + } + } + return false + }) { + // replace the shortened uri with the full length one from the facet using utf8 byte offsets + if int64(len(postText)) >= facet.Index.ByteEnd+charsAdded { + postText = postText[0:facet.Index.ByteStart+charsAdded] + linkUri + postText[facet.Index.ByteEnd+charsAdded:] + charsAdded += int64(len(linkUri)) - (facet.Index.ByteEnd - facet.Index.ByteStart) + } + } + } + // if the post has an embeded link and its url doesn't already appear in postText, append it to + // the end to avoid social cards with missing links + if postView.Embed != nil && + postView.Embed.EmbedExternal_View != nil && + !strings.Contains(postText, postView.Embed.EmbedExternal_View.External.Uri) { + postText = fmt.Sprintf("%s\n%s", postText, postView.Embed.EmbedExternal_View.External.Uri) + } + return postText + } + return "" +} + func (srv *Server) WebProfile(c echo.Context) error { ctx := c.Request().Context() data := pongo2.Context{} |