1 files changed, 74 insertions, 0 deletions
diff --git a/battery/src/cli.vala b/battery/src/cli.vala
new file mode 100644
index 0000000..710edec
--- /dev/null
+++ b/battery/src/cli.vala
@@ -0,0 +1,74 @@
+static bool help;
+static bool version;
+static bool monitor;
+
+const OptionEntry[] options = {
+    { "version", 'v', OptionFlags.NONE, OptionArg.NONE, ref version, null, null },
+    { "help", 'h', OptionFlags.NONE, OptionArg.NONE, ref help, null, null },
+    { "monitor", 'm', OptionFlags.NONE, OptionArg.NONE, ref monitor, null, null },
+    { null },
+};
+
+int main(string[] argv) {
+    try {
+        var opts = new OptionContext();
+        opts.add_main_entries(options, null);
+        opts.set_help_enabled(false);
+        opts.set_ignore_unknown_options(false);
+        opts.parse(ref argv);
+    } catch (OptionError err) {
+        printerr (err.message);
+        return 1;
+    }
+
+    if (help) {
+        print("Usage:\n");
+        print("    %s [flags]\n\n", argv[0]);
+        print("Flags:\n");
+        print("    -h, --help        Print this help and exit\n");
+        print("    -v, --version     Print version number and exit\n");
+        print("    -m, --monitor     Monitor property changes\n");
+        return 0;
+    }
+
+    if (version) {
+        print(AstalBattery.VERSION);
+        return 0;
+    }
+
+    var battery = AstalBattery.get_default();
+    print("%s\n", to_json(battery));
+
+    if (monitor) {
+        battery.notify.connect((prop) => {
+            if (prop.get_name() == "percentage"
+                || prop.get_name() == "state"
+                || prop.get_name() == "icon-name"
+                || prop.get_name() == "time-to-full"
+                || prop.get_name() == "time-to-empty"
+            ) {
+                print("%s\n", to_json(battery));
+            }
+        });
+        new GLib.MainLoop(null, false).run();
+    }
+
+    return 0;
+}
+
+private string to_json(AstalBattery.Device device) {
+    string s = "unknown";
+    if (device.state == AstalBattery.State.CHARGING)
+        s = "charging";
+    if (device.state == AstalBattery.State.DISCHARGING)
+        s = "discharging";
+    if (device.state == AstalBattery.State.FULLY_CHARGED)
+        s = "fully_charged";
+
+    var p = device.percentage;
+    var i = device.icon_name;
+    var r = device.state == AstalBattery.State.CHARGING
+        ? device.time_to_full : device.time_to_empty;
+
+    return "{ \"percentage\": %f, \"state\": \"%s\", \"icon_name\": \"%s\", \"time_remaining\": %f }".printf(p, s, i, r);
+}