Implement shuffle from main menu

src/c/jellyPod.c

@@ -142,6 +142,29 @@ static void to_pkjs_play_from_track(uint16_t seqId) {
 	}
 }
 
+static void to_pkjs_shuffle_in_scope(NavScope scope, uint16_t *subscope_index, bool use_groups) {
+	if (!s_pkjs_ready) {
+		return;
+	}
+
+	DictionaryIterator *out;
+	AppMessageResult result = app_message_outbox_begin(&out);
+	if (result != APP_MSG_OK) {
+		return;
+	}
+	const char *subscope = subscope_index ? s_current_menu_vanity[*subscope_index] : "";
+	if (subscope_index) {
+		dict_write_cstring(out, MESSAGE_KEY_OUT_MENU_NAV_SUBSCOPE, subscope);
+	}
+	dict_write_uint8(out, MESSAGE_KEY_BIDIR_MENU_NAV_SCOPE, scope);
+	dict_write_uint8(out, MESSAGE_KEY_OUT_SHUFFLE_MODE, use_groups ? 2 : 1);
+
+	result = app_message_outbox_send();
+	if (result != APP_MSG_OK) {
+		return;
+	}
+}
+
 static void to_pkjs_move_deeper(NavScope scope, uint16_t *subscope_index) {
 	if (!s_pkjs_ready) {
 		return;
@@ -236,10 +259,10 @@ static void menu_select_click(struct MenuLayer *menu_layer, MenuIndex *clicked_i
 	case NAV_SCOPE_MAIN:
 		switch (clicked_index->row) {
 		case 0:
-			// TODO tell PKJS to shuffle all songs
+			to_pkjs_shuffle_in_scope(s_current_menu_scope, NULL, false);
 			break;
 		case 1:
-			// TODO tell PKJS to shuffle artists
+			to_pkjs_shuffle_in_scope(s_current_menu_scope, NULL, true);
 			break;
 		case 2:
 			to_pkjs_move_deeper(NAV_SCOPE_ARTISTS, NULL);