luci-app-battstatus: initial release

Introduce a new package luci-app-battstatus which queries battery charge
information using i2c commands and displays a charge indicator in the
upper right notification area.

So far this package has been tested to work with the HooToo HT-TM05
travel router but might be extended to cover further models in the
future.

Signed-off-by: Russell Morris <rmorris@rkmorris.us>
[rebase on top of master, rewrite commit message, adjust copyright,
 convert some ubus fields to boolean values]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 55 insertions, 0 deletions

diff --git a/modules/luci-mod-battstatus/htdocs/luci-static/resources/preload/battstatus.js b/modules/luci-mod-battstatus/htdocs/luci-static/resources/preload/battstatus.js
new file mode 100755
index 0000000000..d895c36bbd
--- /dev/null
+++ b/modules/luci-mod-battstatus/htdocs/luci-static/resources/preload/battstatus.js
@@ -0,0 +1,55 @@
+'use strict';
+'require ui';
+'require rpc';
+'require poll';
+'require baseclass';
+
+var callBatteryStatus = rpc.declare({
+	object: 'luci.battstatus',
+	method: 'getBatteryStatus',
+	expect: { '': {} }
+});
+
+var devices = {};
+
+return baseclass.extend({
+	__init__: function() {
+		this.updateIndicator();
+		poll.add(L.bind(this.updateIndicator, this), 5);
+	},
+
+	updateIndicator: function() {
+		return callBatteryStatus().then(L.bind(function(devs) {
+			for (var dev in devs) {
+				var info = devs[dev];
+				if (info.valid) {
+					info.status = (info.charging ? _('Charging') : _('Not Charging')) + ": " + info.percentage + "%";
+					info.state = "active";
+					if (info.percentage <= 20)
+						info.color = "Red";
+					else if (info.percentage <= 30)
+						info.color = "GoldenRod";
+				} else {
+					info.status = info.message;
+					info.state = "inactive";
+				}
+
+				info.name = "battery-" + dev.replace(" ", "-");
+				ui.showIndicator(info.name, info.status, null, info.state);
+				if (typeof info.color != 'undefined') {
+					info.element = document.querySelector(`[data-indicator="${info.name}"]`);
+					info.element.innerHTML = `<span style="color:${info.color}">${info.status}</span>`;
+				}
+
+				devices[dev] = info;
+			}
+
+			for (var dev in devices) {
+				if (!devs.hasOwnProperty(dev)) {
+					ui.hideIndicator('battery-%s'.format(dev));
+					delete devices[dev];
+				}
+			}
+		}, this));
+	}
+});