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#include "AFBClient.h"
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#define UNUSED(x) (void)(x)
extern "C" {
extern struct afb_wsj1 *afb_ws_client_connect_wsj1(struct sd_event *eloop, const char *uri, struct afb_wsj1_itf *itf, void *closure);
extern int afb_wsj1_call_s(struct afb_wsj1 *wsj1, const char *api, const char *verb, const char *object, void (*on_reply)(void *closure, struct afb_wsj1_msg *msg), void *closure);
extern int afb_wsj1_msg_is_reply_ok(struct afb_wsj1_msg *msg);
extern int afb_wsj1_send_event_s(struct afb_wsj1 *wsj1, const char *event, const char *object);
static inline int afb_wsj1_reply_error_s(struct afb_wsj1_msg *msg, const char *object, const char *token);
}
const char * AFBClient::wmURI = "ws://localhost:1700/api?token=wm";
const char * AFBClient::wmAPI = "winman";
AFBClient::AFBClient() : itf()
{
///* itinializing the callback interface for wsj1 */
itf.on_hangup = AFBClient::onHangup;
itf.on_call = AFBClient::onCall;
itf.on_event = AFBClient::onEvent;
}
AFBClient::~AFBClient()
{
}
bool AFBClient::init()
{
printf("init() -->\n");
/* get the default event loop */
int rc = sd_event_default(&loop);
if (rc < 0) {
fprintf(stderr, "Connection to default event loop failed: %s\n", strerror(-rc));
return false;
}
/* connect the websocket wsj1 to the uri given by the first argument */
wsj1 = afb_ws_client_connect_wsj1(loop, wmURI, &itf, NULL);
if (wsj1 == NULL) {
fprintf(stderr, "Connection to %s failed: %m\n", wmURI);
return false;
}
printf("init() <--\n");
return true;
}
int AFBClient::requestSurface(const char *label)
{
printf("requestSurface(%s) -->\n", label);
constexpr char const *verb = "request_surface";
int ret = -1;
json_object *jp = json_object_new_object();
json_object_object_add(jp, "drawing_name", json_object_new_string(label));
// std::experimental::optional look-alike
struct optional {
int value;
bool is_not_set;
};
constexpr struct optional const nullopt = {0, true};
auto id = nullopt;
/* send the request */
int rc = afb_wsj1_call_j(
wsj1, AFBClient::wmAPI, verb, jp,
[](void *closure, afb_wsj1_msg *msg) {
if (afb_wsj1_msg_is_reply_ok(msg)) {
int id = json_object_get_int(
json_object_object_get(afb_wsj1_msg_object_j(msg), "response"));
auto oid = (optional *)closure;
*oid = optional{id};
} else
fprintf(stderr, "wrong request surface reply received!\n");
},
(void *)&id);
if (rc < 0) {
fprintf(stderr, "calling %s/%s(%s) failed: %m\n", AFBClient::wmAPI, verb,
json_object_to_json_string(jp));
} else {
// Lets make this call sync here...
dispatch(-1);
if (! id.is_not_set) {
char *buf;
asprintf(&buf, "%d", id.value);
printf("setenv(\"QT_IVI_SURFACE_ID\", %s, 1)\n", buf);
if (setenv("QT_IVI_SURFACE_ID", buf, 1) != 0) {
fprintf(stderr, "putenv failed: %m\n");
} else {
ret = 0; // Single point of success
}
} else {
fprintf(stderr, "Could not get surface ID from WM\n");
}
}
printf("requestSurface(%s) = %d <--\n", label, ret);
return ret;
}
void AFBClient::activateSurface(const char *label)
{
printf("activateSurface(%s) -->\n", label);
fflush(stdout);
const char begin[] = "{\"drawing_name\":\"";
const char end[] = "\"}";
const char verb[] = "activate_surface";
char *parameter = (char *)malloc(strlen(begin) +
strlen(label) +
strlen(end) + 1);
strcpy(parameter, begin);
strcat(parameter, label);
strcat(parameter, end);
call(AFBClient::wmAPI, verb, parameter);
// Sync this one too
dispatch(-1);
printf("activateSurface(%s) <--\n", label);
fflush(stdout);
}
int AFBClient::dispatch(uint64_t timeout) {
return sd_event_run(loop, timeout);
}
void AFBClient::deactivateSurface(const char *label)
{
json_object *j = json_object_new_object();
json_object_object_add(j, "drawing_name", json_object_new_string(label));
call(AFBClient::wmAPI, "deactivate_surface", json_object_to_json_string(j));
json_object_put(j);
dispatch(-1);
}
void AFBClient::endDraw(const char *label)
{
json_object *j = json_object_new_object();
json_object_object_add(j, "drawing_name", json_object_new_string(label));
call(AFBClient::wmAPI, "enddraw", json_object_to_json_string(j));
json_object_put(j);
dispatch(-1);
}
/* called when wsj1 receives a method invocation */
void AFBClient::onCall(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
{
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\"", NULL);
if (rc < 0)
fprintf(stderr, "replying failed: %m\n");
}
/* called when wsj1 receives an event */
void AFBClient::onEvent(void *closure, const char *event, afb_wsj1_msg *msg)
{
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 AFBClient::onHangup(void *closure, afb_wsj1 *wsj1)
{
UNUSED(closure);
UNUSED(wsj1);
printf("ON-HANGUP\n");
fflush(stdout);
exit(0);
}
/* called when wsj1 receives a reply */
void AFBClient::onReply(void *closure, afb_wsj1_msg *msg)
{
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);
}
/* makes a call */
void AFBClient::call(const char *api, const char *verb, const char *object)
{
static int num = 0;
char *key;
int rc;
printf("call(%s, %s, %s) -->\n", api, verb, object);
fflush(stdout);
/* allocates an id for the request */
rc = asprintf(&key, "%d:%s/%s", ++num, api, verb);
/* send the request */
rc = afb_wsj1_call_s(wsj1, api, verb, object, AFBClient::onReply, key);
if (rc < 0)
fprintf(stderr, "calling %s/%s(%s) failed: %m\n", api, verb, object);
printf("call(%s, %s, %s) <--\n", api, verb, object);
fflush(stdout);
}
/* sends an event */
void AFBClient::event(const char *event, const char *object)
{
int rc;
rc = afb_wsj1_send_event_s(wsj1, event, object);
if (rc < 0)
fprintf(stderr, "sending !%s(%s) failed: %m\n", event, object);
}
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