74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
package gifts
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import (
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"encoding/json"
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"errors"
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"net/http"
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"strings"
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)
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type Handler struct {
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service *Service
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}
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func NewHandler(service *Service) *Handler {
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return &Handler{service: service}
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}
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func (h *Handler) Routes() http.Handler {
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mux := http.NewServeMux()
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mux.HandleFunc("GET /health", h.Health)
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mux.HandleFunc("GET /api/gifts/{slug}", h.GetGift)
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return mux
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}
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func (h *Handler) Health(w http.ResponseWriter, _ *http.Request) {
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writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
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}
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func (h *Handler) GetGift(w http.ResponseWriter, r *http.Request) {
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slug := strings.TrimSpace(r.PathValue("slug"))
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if !validSlug(slug) {
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writeError(w, http.StatusBadRequest, "invalid gift slug")
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return
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}
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gift, err := h.service.GetPublicGift(r.Context(), slug)
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if err != nil {
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if errors.Is(err, ErrNotFound) {
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writeError(w, http.StatusNotFound, "gift not found")
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return
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}
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writeError(w, http.StatusInternalServerError, "could not load gift")
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return
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}
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writeJSON(w, http.StatusOK, gift)
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}
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func validSlug(slug string) bool {
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if len(slug) == 0 || len(slug) > 100 {
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return false
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}
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for index, character := range slug {
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if (character >= 'a' && character <= 'z') ||
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(character >= 'A' && character <= 'Z') ||
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(character >= '0' && character <= '9') ||
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(character == '-' && index > 0 && index < len(slug)-1) {
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continue
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}
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return false
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}
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return true
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}
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func writeError(w http.ResponseWriter, status int, message string) {
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writeJSON(w, status, map[string]string{"error": message})
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}
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func writeJSON(w http.ResponseWriter, status int, value any) {
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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w.WriteHeader(status)
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_ = json.NewEncoder(w).Encode(value)
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}
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