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Monorepo for Tangled tangled.org
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import ( "fmt" "log" "net/http" "time"
comatproto "github.com/bluesky-social/indigo/api/atproto" "github.com/bluesky-social/indigo/atproto/syntax" lexutil "github.com/bluesky-social/indigo/lex/util" "tangled.org/core/api/tangled" "tangled.org/core/appview/db" "tangled.org/core/appview/models" "tangled.org/core/appview/pages" "tangled.org/core/tid")
func resolveStarSubject(d db.Execer, subjectUri syntax.ATURI) (models.StarSubjectType, string, *tangled.FeedStar_Subject, error) { collection := subjectUri.Collection()
switch collection.String() { case tangled.RepoNSID: repo, err := db.GetRepoByAtUri(d, subjectUri.String()) if err != nil { return "", "", nil, err } if repo.RepoDid == "" { return "", "", nil, fmt.Errorf("repo has no DID: %s", subjectUri) } subject := &tangled.FeedStar_Subject{ FeedStar_Repo: &tangled.FeedStar_Repo{Did: repo.RepoDid}, } return models.StarSubjectRepo, repo.RepoDid, subject, nil
case tangled.StringNSID: uri := subjectUri.String() subject := &tangled.FeedStar_Subject{ FeedStar_String: &tangled.FeedStar_String{Uri: uri}, } return models.StarSubjectString, uri, subject, nil
default: return "", "", nil, fmt.Errorf("unsupported star subject collection: %s", collection) }}
func (s *State) Star(w http.ResponseWriter, r *http.Request) { l := s.logger.With("handler", "Star") currentUser := s.oauth.GetMultiAccountUser(r)
subject := r.URL.Query().Get("subject") if subject == "" { l.Warn("invalid form") return }
subjectUri, err := syntax.ParseATURI(subject) if err != nil { l.Warn("invalid form", "subject", subject, "err", err) return }
subjectType, subjectKey, starSubject, err := resolveStarSubject(s.db, subjectUri) if err != nil { log.Println("failed to resolve star subject", err) return }
client, err := s.oauth.AuthorizedClient(r) if err != nil { l.Error("failed to authorize client", "err", err) return }
repoName := r.URL.Query().Get("repoName")
switch r.Method { case http.MethodPost: star := models.Star{ Did: currentUser.Did, SubjectType: subjectType, Subject: subjectKey, Created: time.Now(), } rkey := tid.TID()
tx, err := s.db.BeginTx(r.Context(), nil) if err != nil { l.Error("failed to start transaction", "err", err) return } defer tx.Rollback()
if err := db.UpsertStar(tx, rkey, star); err != nil { l.Error("failed to star", "err", err) return }
resp, err := comatproto.RepoPutRecord(r.Context(), client, &comatproto.RepoPutRecord_Input{ Collection: tangled.FeedStarNSID, Repo: currentUser.Did, Rkey: rkey, Record: &lexutil.LexiconTypeDecoder{ Val: &tangled.FeedStar{ CreatedAt: star.Created.Format(time.RFC3339), Subject: starSubject, }, }, }) if err != nil { l.Error("failed to create atproto record", "err", err) return } l.Info("created atproto record", "uri", resp.Uri)
if err := tx.Commit(); err != nil { l.Error("failed to commit transaction", "err", err) // DB op failed but record is created in PDS. Ingester will backfill the missed operation }
s.notifier.NewStar(r.Context(), &star)
starCount, err := db.GetStarCount(s.db, subjectType, subjectKey) if err != nil { l.Error("failed to get star count", "subject", subjectKey, "err", err) }
s.pages.StarBtnFragment(w, pages.StarBtnFragmentParams{ IsStarred: true, SubjectAt: subjectUri, StarCount: starCount, RepoName: repoName, })
return case http.MethodDelete: tx, err := s.db.BeginTx(r.Context(), nil) if err != nil { l.Error("failed to start transaction", "err", err) } defer tx.Rollback()
stars, err := db.DeleteStars(tx, syntax.DID(currentUser.Did), subjectKey) if err != nil { l.Error("failed to delete stars from db", "err", err) return }
var writes []*comatproto.RepoApplyWrites_Input_Writes_Elem for _, starAt := range stars { writes = append(writes, &comatproto.RepoApplyWrites_Input_Writes_Elem{ RepoApplyWrites_Delete: &comatproto.RepoApplyWrites_Delete{ Collection: tangled.FeedStarNSID, Rkey: starAt.RecordKey().String(), }, }) } _, err = comatproto.RepoApplyWrites(r.Context(), client, &comatproto.RepoApplyWrites_Input{ Repo: currentUser.Did, Writes: writes, }) if err != nil { l.Error("failed to delete stars from PDS", "err", err) return }
if err := tx.Commit(); err != nil { l.Error("failed to commit transaction", "err", err) // DB op failed but record is created in PDS. Ingester will backfill the missed operation }
s.notifier.DeleteStar(r.Context(), &models.Star{ Did: currentUser.Did, SubjectType: subjectType, Subject: subjectKey, // Rkey // Created })
starCount, err := db.GetStarCount(s.db, subjectType, subjectKey) if err != nil { l.Error("failed to get star count", "subject", subjectKey, "err", err) return }
s.pages.StarBtnFragment(w, pages.StarBtnFragmentParams{ IsStarred: false, SubjectAt: subjectUri, StarCount: starCount, RepoName: repoName, })
return }}