Initial QSfera import

Server/services/keepernotes/pkg/notes/server.go

@@ -0,0 +1,105 @@
+package notes
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+type Server struct {
+	store Store
+}
+
+func NewServer(store Store) http.Handler {
+	server := &Server{store: store}
+	mux := http.NewServeMux()
+	mux.HandleFunc("/healthz", server.handleHealth)
+	mux.HandleFunc("/api/notes", server.handleCollection)
+	mux.HandleFunc("/api/notes/", server.handleItem)
+	return withCORS(mux)
+}
+
+func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		writeError(w, http.StatusMethodNotAllowed, "method not allowed")
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
+}
+
+func (s *Server) handleCollection(w http.ResponseWriter, r *http.Request) {
+	switch r.Method {
+	case http.MethodGet:
+		writeJSON(w, http.StatusOK, s.store.List())
+	case http.MethodPost:
+		var note Note
+		if err := json.NewDecoder(r.Body).Decode(&note); err != nil {
+			writeError(w, http.StatusBadRequest, "invalid note json")
+			return
+		}
+		saved, err := s.store.Upsert(note)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, err.Error())
+			return
+		}
+		writeJSON(w, http.StatusOK, saved)
+	default:
+		writeError(w, http.StatusMethodNotAllowed, "method not allowed")
+	}
+}
+
+func (s *Server) handleItem(w http.ResponseWriter, r *http.Request) {
+	id, err := url.PathUnescape(strings.TrimPrefix(r.URL.Path, "/api/notes/"))
+	if err != nil || strings.TrimSpace(id) == "" {
+		writeError(w, http.StatusBadRequest, "note id is required")
+		return
+	}
+
+	switch r.Method {
+	case http.MethodPut:
+		var note Note
+		if err := json.NewDecoder(r.Body).Decode(&note); err != nil {
+			writeError(w, http.StatusBadRequest, "invalid note json")
+			return
+		}
+		note.ID = id
+		saved, err := s.store.Upsert(note)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, err.Error())
+			return
+		}
+		writeJSON(w, http.StatusOK, saved)
+	case http.MethodDelete:
+		if err := s.store.Delete(id); err != nil {
+			writeError(w, http.StatusInternalServerError, err.Error())
+			return
+		}
+		w.WriteHeader(http.StatusNoContent)
+	default:
+		writeError(w, http.StatusMethodNotAllowed, "method not allowed")
+	}
+}
+
+func withCORS(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Access-Control-Allow-Origin", "*")
+		w.Header().Set("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE,OPTIONS")
+		w.Header().Set("Access-Control-Allow-Headers", "Content-Type,Accept")
+		if r.Method == http.MethodOptions {
+			w.WriteHeader(http.StatusNoContent)
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+
+func writeJSON(w http.ResponseWriter, status int, value any) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	w.WriteHeader(status)
+	_ = json.NewEncoder(w).Encode(value)
+}
+
+func writeError(w http.ResponseWriter, status int, message string) {
+	writeJSON(w, status, map[string]string{"error": message})
+}