mirror of https://github.com/jlelse/GoBlog
125 lines
3.7 KiB
Go
125 lines
3.7 KiB
Go
package main
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import (
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"net/http"
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"strings"
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"time"
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"github.com/araddon/dateparse"
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)
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func manipulateAsPath(next http.Handler) http.Handler {
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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if lowerAccept := strings.ToLower(r.Header.Get("Accept")); (strings.Contains(lowerAccept, "application/activity+json") || strings.Contains(lowerAccept, "application/ld+json")) && !strings.Contains(lowerAccept, "text/html") {
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// Is ActivityStream, add ".as" to differentiate cache and also trigger as function
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r.URL.Path += ".as"
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}
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next.ServeHTTP(rw, r)
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})
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}
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type asPost struct {
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Context []string `json:"@context"`
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To []string `json:"to"`
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InReplyTo string `json:"inReplyTo,omitempty"`
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Name string `json:"name,omitempty"`
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Type string `json:"type"`
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Content string `json:"content"`
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MediaType string `json:"mediaType"`
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Attachment []*asAttachment `json:"attachment,omitempty"`
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Published string `json:"published"`
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Updated string `json:"updated,omitempty"`
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ID string `json:"id"`
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URL string `json:"url"`
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AttributedTo string `json:"attributedTo"`
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}
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type asAttachment struct {
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Type string `json:"type"`
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URL string `json:"url"`
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}
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func servePostActivityStreams(w http.ResponseWriter, r *http.Request) {
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// Remove ".as" from path again
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r.URL.Path = strings.TrimSuffix(r.URL.Path, ".as")
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// Fetch post from db
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p, err := getPost(r.Context(), slashTrimmedPath(r))
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if err == errPostNotFound {
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serve404(w, r)
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return
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} else if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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// Create a Note object
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as := &asPost{
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Context: []string{"https://www.w3.org/ns/activitystreams"},
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To: []string{"https://www.w3.org/ns/activitystreams#Public"},
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MediaType: "text/html",
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ID: appConfig.Server.PublicAddress + p.Path,
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URL: appConfig.Server.PublicAddress + p.Path,
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AttributedTo: appConfig.Server.PublicAddress,
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}
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// Name and Type
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if title := p.title(); title != "" {
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as.Name = title
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as.Type = "Article"
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} else {
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as.Type = "Note"
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}
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// Content
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as.Content = string(p.html())
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// Attachments
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if images := p.Parameters[appConfig.Blogs[p.Blog].ActivityStreams.ImagesParameter]; len(images) > 0 {
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for _, image := range images {
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as.Attachment = append(as.Attachment, &asAttachment{
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Type: "Image",
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URL: image,
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})
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}
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}
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// Dates
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dateFormat := "2006-01-02T15:04:05-07:00"
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if p.Published != "" {
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if t, err := dateparse.ParseIn(p.Published, time.Local); err == nil {
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as.Published = t.Format(dateFormat)
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}
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}
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if p.Updated != "" {
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if t, err := dateparse.ParseIn(p.Updated, time.Local); err == nil {
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as.Published = t.Format(dateFormat)
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}
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}
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// Reply
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if replyLink := p.firstParameter(appConfig.Blogs[p.Blog].ActivityStreams.ReplyParameter); replyLink != "" {
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as.InReplyTo = replyLink
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}
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// Send JSON
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w.Header().Add(contentType, contentTypeJSONUTF8)
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_ = json.NewEncoder(w).Encode(as)
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}
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type asPerson struct {
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Context []string `json:"@context"`
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ID string `json:"id"`
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Type string `json:"type"`
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Name string `json:"name"`
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Summary string `json:"summary"`
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Attachment []struct {
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Type string `json:"type"`
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Name string `json:"name"`
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Value string `json:"value"`
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} `json:"attachment"`
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PreferredUsername string `json:"preferredUsername"`
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Icon struct {
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Type string `json:"type"`
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URL string `json:"url"`
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} `json:"icon"`
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Inbox string `json:"inbox"`
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PublicKey struct {
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ID string `json:"id"`
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Owner string `json:"owner"`
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PublicKeyPem string `json:"publicKeyPem"`
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} `json:"publicKey"`
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}
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