154 lines
4.1 KiB
Go
154 lines
4.1 KiB
Go
package http
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import (
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"encoding/json"
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"errors"
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"mime"
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"net/http"
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"strings"
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"time"
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"github.com/go-ap/activitypub"
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"source.toby3d.me/toby3d/home/internal/common"
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"source.toby3d.me/toby3d/home/internal/domain"
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"source.toby3d.me/toby3d/home/internal/entry"
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"source.toby3d.me/toby3d/home/internal/site"
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"source.toby3d.me/toby3d/home/internal/theme"
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"source.toby3d.me/toby3d/home/internal/urlutil"
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)
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type (
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Handler struct {
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entries entry.UseCase
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sites site.UseCase
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themes theme.UseCase
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}
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Profile struct {
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*activitypub.Person
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// Mastodon related
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// Pinned posts. See [Featured collection].
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//
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// [Featured collection]: https://docs.joinmastodon.org/spec/activitypub/#featured
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Featured []interface{} `json:"featured"`
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// Required for Move activity.
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AlsoKnownAs []string `json:"alsoKnownAs"`
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// Will be shown as a locked account.
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ManuallyApprovesFollowers bool `json:"manuallyApprovesFollowers"`
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// Will be shown in the profile directory.
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// See [Discoverability flag].
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//
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// [Discoverability flag]: https://docs.joinmastodon.org/spec/activitypub/#discoverable
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Discoverable bool `json:"discoverable"`
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}
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)
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func NewHandler(sites site.UseCase, entries entry.UseCase, themes theme.UseCase) *Handler {
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return &Handler{
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sites: sites,
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entries: entries,
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themes: themes,
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}
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}
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func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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head, tail := urlutil.ShiftPath(r.URL.Path)
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lang := domain.NewLanguage(head)
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s, err := h.sites.Do(r.Context(), lang)
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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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contentType, params, _ := mime.ParseMediaType(r.Header.Get(common.HeaderAccept))
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switch contentType {
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case common.MIMEApplicationLdJSON: // NOTE(toby3d): show entry as ActivityPub object.
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if profile, ok := params["profile"]; ok && profile != "https://www.w3.org/ns/activitystreams" {
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http.Error(w, "got '"+profile+"' profile value, want 'https://www.w3.org/ns/activitystreams'",
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http.StatusBadRequest)
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return
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}
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w.Header().Set(common.HeaderContentType, common.MIMEApplicationActivityJSONCharsetUTF8)
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encoder := json.NewEncoder(w)
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if head == "" { // NOTE(toby3d): base URL point to owner Profile.
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langRef := activitypub.LangRef(lang.Lang())
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person := activitypub.PersonNew(activitypub.IRI(s.BaseURL.String()))
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person.URL = person.ID
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person.Name.Add(activitypub.LangRefValueNew(langRef, "Maxim Lebedev"))
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person.Summary.Add(activitypub.LangRefValueNew(langRef, "Creative dude from russia"))
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person.PreferredUsername.Add(activitypub.LangRefValueNew(langRef, "toby3d"))
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person.Published = time.Date(2009, time.February, 0, 0, 0, 0, 0, time.UTC)
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_ = encoder.Encode(person)
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return
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}
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e, err := h.entries.Do(r.Context(), lang, tail)
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if err != nil {
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if errors.Is(err, entry.ErrNotExist) {
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http.NotFound(w, r)
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} else {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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}
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return
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}
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resp := activitypub.ObjectNew(activitypub.NoteType)
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resp.ID = activitypub.ID(s.BaseURL.JoinPath(e.File.Path()).String())
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resp.Content.Add(activitypub.LangRefValueNew(activitypub.NilLangRef, string(e.Content)))
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_ = encoder.Encode(resp)
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return
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}
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// NOTE(toby3d): search entry for requested URL and language
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// code in subdir.
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e, err := h.entries.Do(r.Context(), lang, tail)
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if err != nil {
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if errors.Is(err, entry.ErrNotExist) {
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http.NotFound(w, r)
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} else {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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}
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return
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}
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// NOTE(toby3d): wrap founded entry into theme template and
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// answer to client.
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contentLanguage := make([]string, len(e.Translations))
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for i := range e.Translations {
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contentLanguage[i] = e.Translations[i].Language.Code()
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}
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w.Header().Set(common.HeaderContentLanguage, strings.Join(contentLanguage, ", "))
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template, err := h.themes.Do(r.Context(), s, e)
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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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w.Header().Set(common.HeaderContentType, common.MIMETextHTMLCharsetUTF8)
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if err = template(w); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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}
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}
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