feat: add frame

internal/economy/handler.go

@@ -155,6 +155,70 @@ func (h *Handler) carpetAction(w http.ResponseWriter, r *http.Request, sel bool)
 	}
 }
 
+// Frames — GET /api/frames (قاب‌های آواتار + مالکیت + انتخابِ کاربر)
+func (h *Handler) Frames(w http.ResponseWriter, r *http.Request) {
+	id, ok := uid(r)
+	if !ok {
+		httpx.Error(w, http.StatusUnauthorized, "unauthorized")
+		return
+	}
+	frames, err := h.svc.Frames(r.Context(), id)
+	if err != nil {
+		httpx.Error(w, http.StatusInternalServerError, "server error")
+		return
+	}
+	selected := ""
+	if p, _ := h.svc.GetProfile(r.Context(), id); p != nil {
+		selected = p.SelectedFrame
+	}
+	httpx.JSON(w, http.StatusOK, map[string]any{"frames": frames, "selected": selected})
+}
+
+// BuyFrame — POST /api/shop/buy-frame
+func (h *Handler) BuyFrame(w http.ResponseWriter, r *http.Request) {
+	h.frameAction(w, r, false)
+}
+
+// SelectFrame — POST /api/shop/select-frame
+func (h *Handler) SelectFrame(w http.ResponseWriter, r *http.Request) {
+	h.frameAction(w, r, true)
+}
+
+func (h *Handler) frameAction(w http.ResponseWriter, r *http.Request, sel bool) {
+	id, ok := uid(r)
+	if !ok {
+		httpx.Error(w, http.StatusUnauthorized, "unauthorized")
+		return
+	}
+	var req struct {
+		FrameID string `json:"frame_id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		httpx.Error(w, http.StatusBadRequest, "invalid body")
+		return
+	}
+	var err error
+	if sel {
+		err = h.svc.SelectFrame(r.Context(), id, req.FrameID)
+	} else {
+		err = h.svc.BuyFrame(r.Context(), id, req.FrameID)
+	}
+	switch {
+	case err == nil:
+		httpx.JSON(w, http.StatusOK, map[string]string{"message": "ok"})
+	case errors.Is(err, ErrNotFound):
+		httpx.Error(w, http.StatusNotFound, "frame not found")
+	case errors.Is(err, ErrAlreadyOwned):
+		httpx.Error(w, http.StatusConflict, "already owned")
+	case errors.Is(err, ErrNotOwned):
+		httpx.Error(w, http.StatusForbidden, "frame not owned")
+	case errors.Is(err, ErrInsufficient):
+		httpx.Error(w, http.StatusPaymentRequired, "insufficient coins")
+	default:
+		httpx.Error(w, http.StatusInternalServerError, "server error")
+	}
+}
+
 // ChatPacks — GET /api/chat-packs (بسته‌های پیام/شکلک + مالکیتِ کاربر)
 func (h *Handler) ChatPacks(w http.ResponseWriter, r *http.Request) {
 	id, ok := uid(r)