+constexpr const char *const wmAPI = "winman";
+
+#ifdef NDEBUG
+#define TRACE()
+#else
+#define TRACE() \
+ ScopeTrace __attribute__((unused)) trace_scope_here__(__PRETTY_FUNCTION__)
+
+struct ScopeTrace {
+ static int indent;
+ char const *f{};
+ ScopeTrace(char const *func) : f(func) {
+ fprintf(stderr, "%*s%s -->\n", 2 * indent++, "", this->f);
+ }
+ ~ScopeTrace() { fprintf(stderr, "%*s%s <--\n", 2 * --indent, "", this->f); }
+};
+int ScopeTrace::indent = 0;
+#endif
+
+/* called when wsj1 receives a method invocation */
+void onCall(void *closure, const char *api, const char *verb,
+ struct afb_wsj1_msg *msg) {
+ TRACE();
+ UNUSED(closure);
+ int rc;
+ printf("ON-CALL %s/%s:\n%s\n", api, verb,
+ json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
+ JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
+ rc = afb_wsj1_reply_error_s(msg, "\"unimplemented\"", nullptr);
+ if (rc < 0)
+ fprintf(stderr, "replying failed: %m\n");
+}
+
+/* called when wsj1 receives an event */
+void onEvent(void *closure, const char *event, afb_wsj1_msg *msg) {
+ TRACE();
+ UNUSED(closure);
+ printf("ON-EVENT %s:\n%s\n", event,
+ json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
+ JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
+}
+
+/* called when wsj1 hangsup */
+void onHangup(void *closure, afb_wsj1 *wsj1) {
+ TRACE();
+ UNUSED(closure);
+ UNUSED(wsj1);
+ printf("ON-HANGUP\n");
+ fflush(stdout);
+ exit(0);
+}
+
+/* called when wsj1 receives a reply */
+void onReply(void *closure, afb_wsj1_msg *msg) {
+ TRACE();
+ printf("ON-REPLY %s: %s\n%s\n", (char *)closure,
+ afb_wsj1_msg_is_reply_ok(msg) ? "OK" : "ERROR",
+ json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
+ JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
+ free(closure);
+}