first commit

internal/http/handlers/users.go

@@ -0,0 +1,63 @@
+package handlers
+
+import (
+	"errors"
+	"net/http"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/noderunners/nip05api/internal/nostr"
+	"github.com/noderunners/nip05api/internal/user"
+)
+
+type Users struct {
+	Users     *user.Service
+	GraceDays int
+}
+
+func (h *Users) Get(w http.ResponseWriter, r *http.Request) {
+	hexpk, err := nostr.NormalizePubkey(chi.URLParam(r, "pubkey"))
+	if err != nil {
+		WriteError(w, http.StatusBadRequest, "ValidationError", "Invalid pubkey format")
+		return
+	}
+	u, err := h.Users.Repo().GetByPubkey(r.Context(), hexpk)
+	if errors.Is(err, user.ErrUserNotFound) {
+		WriteError(w, http.StatusNotFound, "NotFound", "user not registered")
+		return
+	}
+	if err != nil {
+		WriteError(w, http.StatusInternalServerError, "InternalError", err.Error())
+		return
+	}
+
+	resp := map[string]any{
+		"pubkey": u.Pubkey,
+		"npub":   nostr.HexToNpub(u.Pubkey),
+	}
+	if u.IsActive {
+		resp["is_whitelisted"] = true
+		resp["username"] = u.Username
+		if u.ExpiresAt != nil {
+			resp["expires_at"] = u.ExpiresAt.UTC().Format(time.RFC3339)
+		} else {
+			resp["expires_at"] = nil
+		}
+		resp["subscription_type"] = string(u.SubscriptionType)
+	} else {
+		resp["is_whitelisted"] = false
+		if u.ExpiresAt != nil {
+			resp["expired_at"] = u.ExpiresAt.UTC().Format(time.RFC3339)
+		}
+		if u.DeactivatedAt != nil {
+			cutoff := u.DeactivatedAt.Add(time.Duration(h.GraceDays) * 24 * time.Hour)
+			if time.Now().UTC().Before(cutoff) {
+				resp["in_grace"] = true
+				resp["reserved_username"] = u.Username
+			} else {
+				resp["in_grace"] = false
+			}
+		}
+	}
+	WriteJSON(w, http.StatusOK, resp)
+}