From a079c79ab81a4bc2f7cf7971db6373fefe1e6110 Mon Sep 17 00:00:00 2001
From: Pavel Makhov <streetturtle@users.noreply.github.com>
Date: Wed, 25 Jan 2017 22:48:35 -0500
Subject: use widget.watch

---
 battery-widget-v4/battery.lua | 79 +++++++++++++++++++++----------------------
 1 file changed, 39 insertions(+), 40 deletions(-)

diff --git a/battery-widget-v4/battery.lua b/battery-widget-v4/battery.lua
index eb467d7..b391b2c 100644
--- a/battery-widget-v4/battery.lua
+++ b/battery-widget-v4/battery.lua
@@ -1,59 +1,58 @@
 local wibox = require("wibox")
 local awful = require("awful")
 local naughty = require("naughty")
+local watch = require("awful.widget.watch")
 
+-- Battery 0: Discharging, 75%, 01:51:38 remaining
+-- Battery 0: Charging, 53%, 00:57:43 until charged
 
-batteryIcon = wibox.widget {
-widget = wibox.widget.imagebox
-}
+batteryIcon = wibox.widget { widget = wibox.widget.imagebox }
 
-function refresh_icon()
-  awful.spawn.easy_async([[bash -c 'acpi | cut -d, -f 2 | egrep -o "[0-9]{1,3}"']], 
-    function(stdout, stderr, reason, exit_code)   
-      local batteryType
-      local charge = tonumber(stdout)
-      if (charge >= 0 and charge < 20) then 
-        batteryType="battery-empty"
-        show_battery_warning()
+watch(
+    "acpi", 10,
+    function(widget, stdout, stderr, exitreason, exitcode)
+        local batteryType
+        local bar, status, charge, time = string.match(stdout, '(.+): (%a+), (%d%d)%%, (.+)')
+        charge = tonumber(charge)
+        if (charge >= 0 and charge < 20) then 
+            batteryType="battery-empty"
+            show_battery_warning()
         elseif (charge >= 20 and charge < 40) then batteryType="battery-caution"
         elseif (charge >= 40 and charge < 60) then batteryType="battery-low"
         elseif (charge >= 60 and charge < 80) then batteryType="battery-good"
         elseif (charge >= 80 and charge <= 100) then batteryType="battery-full"
-      end
-      batteryIcon.image = "/usr/share/icons/Arc-Icons/panel/22/" .. batteryType .. ".svg"
-    end)
-end
+        end
+        if status == 'Charging' then 
+            batteryType = batteryType .. '-charging'
+        end
+        batteryIcon.image = "/usr/share/icons/Arc-Icons/panel/22/" .. batteryType .. ".svg"
+    end
+)
 
 function show_battery_status()
-  awful.spawn.easy_async([[bash -c 'acpi | cut -d, -f 2,3']],
-    function(stdout, stderr, reason, exit_code)   
-      naughty.notify{
-      text = stdout,
-      title = "Battery status",
-      timeout = 5, hover_timeout = 0.5,
-      width = 200,
-    }   
-  end
-  )
+    awful.spawn.easy_async([[bash -c 'acpi']],
+        function(stdout, stderr, reason, exit_code)   
+            naughty.notify{
+                text = stdout,
+                title = "Battery status",
+                timeout = 5, hover_timeout = 0.5,
+                width = 200,
+            }
+        end
+    )
 end
 
 function show_battery_warning()
-  naughty.notify{
-  text = "Huston, we have a problem",
-  title = "Battery is dying",
-  timeout = 5, hover_timeout = 0.5,
-  position = "bottom_right",
-  bg = "#F06060",
-  fg = "#EEE9EF",
-  width = 200,
+    naughty.notify{
+    text = "Huston, we have a problem",
+    title = "Battery is dying",
+    timeout = 5, hover_timeout = 0.5,
+    position = "bottom_right",
+    bg = "#F06060",
+    fg = "#EEE9EF",
+    width = 200,
 }
 end
 
--- timer to refresh icon
-local batteryWidgetTimer = timer({ timeout = 60 })  
-batteryWidgetTimer:connect_signal("timeout",  function() refresh_icon() end)
-batteryWidgetTimer:start()
-batteryWidgetTimer:emit_signal("timeout")
-
 -- popup with battery info
-batteryIcon:connect_signal("mouse::enter", function() show_battery_status() end)
\ No newline at end of file
+batteryIcon:connect_signal("mouse::enter", function() show_battery_status() end)
-- 
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