Getting battery level of connected phone device

Adding "get_battery_level" verb for getting battery level of connected phone device.
Is used ofono service and handsfree interface.

Bug-AGL: SPEC-3687

Signed-off-by: saman <mahmoudi.saman1@gmail.com>
Change-Id: I9713cb186195a170909e6511991cfc32380e12a1

4 files changed, 104 insertions, 0 deletions

diff --git a/README.md b/README.md
index 839d6a7..ac3f623 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ Telephony service allows respective clients access to the Handsfree Profile via
 | dial                | dial respective number                          | *Request:* {"value": "15035551212"}         |
 | hangup              | hangup an active call or reject incoming call   |                                             |
 | answer              | answer incoming call                            |                                             |
+| get_battery_level   | getting battery level of connected phone device |                                             |
 
 ## Events
 
diff --git a/binding/gdbus/ofono_manager.c b/binding/gdbus/ofono_manager.c
index c0000dc..0eb63ea 100644
--- a/binding/gdbus/ofono_manager.c
+++ b/binding/gdbus/ofono_manager.c
@@ -182,3 +182,80 @@ gboolean ofono_manager_get_default_modem_valid(void)
 
 	return default_modem.valid;
 }
+
+static json_object *gvariant_to_json(GVariant *value)
+{
+	const gchar *type = g_variant_get_type_string(value);
+	json_object *res = NULL;
+	json_object *obj = NULL;
+	switch (*type) {
+	case 'o':
+	case 's':
+		res = json_object_new_string(g_variant_get_string(value, NULL));
+		break;
+	case 'b':
+		res = json_object_new_int(g_variant_get_boolean(value));
+		break;
+	case 'u':
+		res = json_object_new_int64(g_variant_get_uint32(value));
+		break;
+	case 'y':
+		res = json_object_new_int((int)g_variant_get_byte(value));
+		break;
+	case 'a':
+		if(g_strcmp0(type, "as"))
+			break;
+		const gchar *arr_str;
+		GVariantIter i;
+		obj = json_object_new_array();
+		g_variant_iter_init(&i, value);
+		while (g_variant_iter_next(&i, "s", &arr_str))
+			json_object_array_add(obj, json_object_new_string(arr_str));
+		res = obj;
+	default:
+		break;
+	}
+	return res;
+}
+
+json_object * ofono_get_properties(GDBusConnection *conn, const char *path, const char *interface, GError **error)
+{
+	GVariant *reply = NULL;
+	GVariantIter *array;
+	GVariant *var = NULL;
+	const gchar *key = NULL;
+	json_object *jprop = NULL;
+
+	reply = g_dbus_connection_call_sync(conn,
+										OFONO_SERVICE, path, interface, "GetProperties",
+										NULL, NULL, G_DBUS_CALL_FLAGS_NONE,
+										(120 * 1000), NULL, error);
+	if (!reply)
+		return NULL;
+
+	g_variant_get(reply, "(a{sv})", &array);
+	jprop = json_object_new_object();
+	while (g_variant_iter_loop(array, "{sv}", &key, &var)) {
+		json_object_object_add(jprop,key,gvariant_to_json(var));
+	}
+	g_variant_iter_free(array);
+	g_variant_unref(reply);
+	return jprop;
+}
+
+json_object *ofono_get_property(const char *path, const char *interface, const char *name, GError **error)
+{
+	GDBusConnection *conn = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, error);
+	json_object *jprop;
+	json_object *jret = json_object_new_object();
+	jprop = ofono_get_properties(conn,path,interface,error);
+	json_object_object_foreach(jprop, key, jval) {
+		if (name) {
+			if (!g_strcmp0(key, name)) {
+				return jval;
+			}
+		}
+		json_object_object_add(jret,key,jval);
+	}
+	return jret;
+}
\ No newline at end of file
diff --git a/binding/gdbus/ofono_manager.h b/binding/gdbus/ofono_manager.h
index 0556d4f..c7333d0 100644
--- a/binding/gdbus/ofono_manager.h
+++ b/binding/gdbus/ofono_manager.h
@@ -21,6 +21,9 @@
 #define AFB_BINDING_VERSION 3
 #include <afb/afb-binding.h>
 
+#define OFONO_SERVICE "org.ofono"
+#define OFONO_HANDSFREE_INTERFACE OFONO_SERVICE ".Handsfree"
+
 int ofono_manager_init(void);
 void ofono_manager_invalidate_default_modem(void);
 int ofono_manager_set_default_modem(const char *);
@@ -31,3 +34,4 @@ const gchar *ofono_manager_get_default_modem_type(void);
 gboolean ofono_manager_get_default_modem_powered(void);
 gboolean ofono_manager_get_default_modem_online(void);
 gboolean ofono_manager_get_default_modem_valid(void);
+json_object *ofono_get_property(const char *path, const char *interface, const char *name, GError **error);
\ No newline at end of file
diff --git a/binding/telephony-binding.c b/binding/telephony-binding.c
index c84af2c..dce0ef9 100644
--- a/binding/telephony-binding.c
+++ b/binding/telephony-binding.c
@@ -106,6 +106,24 @@ static void answer(afb_req_t request)
 	}
 }
 
+static void get_battery_level(afb_req_t request)
+{
+	const gchar *device;
+
+	device = ofono_manager_get_default_modem_path();
+	if (!device) {
+		afb_req_fail(request, "failed", "No path find");
+		return;
+	}
+
+	json_object *result = ofono_get_property(device, OFONO_HANDSFREE_INTERFACE, "BatteryChargeLevel", NULL);
+	if (!result)
+		afb_req_fail(request, "failed", "Can not find Battery object");
+	else
+		afb_req_success(request, result, "OK");
+	return;
+}
+
 static void subscribe(afb_req_t request)
 {
 	const char *value = afb_req_value(request, "value");
@@ -354,6 +372,10 @@ static const afb_verb_t verbs[]= {
 		.callback	= answer,
 	},
 	{
+		.verb		= "get_battery_level",
+		.callback	= get_battery_level,
+	},
+	{
 		.verb		= "subscribe",
 		.callback	= subscribe,
 	},