1 files changed, 81 insertions, 0 deletions
diff --git a/.config/awesome/services/battery.lua b/.config/awesome/services/battery.lua
new file mode 100644
index 0000000..98bacc9
--- /dev/null
+++ b/.config/awesome/services/battery.lua
@@ -0,0 +1,81 @@
+local UPower = require("lgi").UPowerGlib
+local gobject = require "gears.object"
+local gtimer = require "gears.timer"
+local phosphor = require "assets.phosphor"
+local qmath = require "quarrel.math"
+local qvars = require "quarrel.vars"
+
+local upower = assert(UPower.Client.new_full())
+local inner
+
+for _, device in ipairs(upower:get_devices()) do
+    if UPower.Device.kind_to_string(device.kind) == "battery" and device.model == "Primary" then
+        inner = device
+        break
+    end
+end
+
+local _level, _state
+
+---@class Battery: gears.object
+---@field _private { level: number, state: string}
+local battery = gobject {
+    class = {
+        set_level = function(self, level)
+            _level = level
+            self:emit_signal("level", level)
+        end,
+        get_level = function()
+            return _level
+        end,
+
+        set_state = function(self, state)
+            _state = state
+            self:emit_signal("state", state)
+        end,
+        get_state = function()
+            return _state
+        end,
+    },
+    enable_properties = true,
+}
+
+local function icon_handler()
+    local icon_data = battery.state == "charging" and { "charging", "green" }
+        or qmath.step_value(battery.level, {
+            { 0, { "empty", "red" } },
+            { 20, { "low", "red" } },
+            { 40, { "medium", "yellow" } },
+            { 60, { "high", "green" } },
+            { 80, { "full", "green" } },
+            { 100 },
+        })
+
+    battery:emit_signal("icon", phosphor["battery_vertical_" .. icon_data[1] .. "_fill"], qvars.colors[icon_data[2]])
+end
+
+local function level_handler()
+    battery.level = qmath.percentage(inner.energy, inner.energy_full)
+end
+
+local function state_handler()
+    battery.state = UPower.Device.state_to_string(inner.state)
+end
+
+function inner.on_notify.state()
+    state_handler()
+    icon_handler()
+end
+
+function inner.on_notify.energy()
+    level_handler()
+    icon_handler()
+end
+
+gtimer.delayed_call(function()
+    state_handler()
+    level_handler()
+    icon_handler()
+end)
+
+return battery