add brew widget

.config/sketchybar/items/widgets/brew.lua

@@ -0,0 +1,79 @@
+local icons = require("icons")
+local colors = require("colors")
+local settings = require("settings")
+
+local thresholds = {
+	-- default color green will be returned if count is less than the first threshold
+	[3] = colors.yellow,
+	[5] = colors.orange,
+	[10] = colors.red,
+}
+
+local brew = sbar.add("item", "widgets.brew", {
+	position = "right",
+	drawing = "off",
+	icon = {
+		string = icons.brew.empty,
+		color = colors.green,
+		align = "left",
+	},
+	label = {
+		string = "0",
+		font = { family = settings.font.numbers },
+	},
+	updates = "on",
+	update_freq = 10,
+})
+
+brew:subscribe({ "routine", "brew_update" }, function()
+	sbar.exec("brew outdated | wc -l | tr -d ' '", function(brew_outdated)
+		local function getThresholdColor(count)
+			local thresholdKeys = {}
+			for key in pairs(thresholds) do
+				table.insert(thresholdKeys, key)
+			end
+
+			table.sort(thresholdKeys, function(a, b)
+				return a > b
+			end)
+
+			for _, threshold in ipairs(thresholdKeys) do
+				if tonumber(count) >= threshold then
+					return thresholds[threshold]
+				end
+			end
+			return colors.green
+		end
+
+		local icon = icons.brew.empty
+		local color = colors.green
+		local label = "0"
+		local count = brew_outdated
+		local drawing = "off"
+
+		if tonumber(count) > 0 then
+			icon = icons.brew.full
+			label = count
+			color = getThresholdColor(count)
+			drawing = "on"
+		end
+		--print("color: ", color, "count: ", count, "icon: ", icon, "label: ", label, "drawing: ", drawing)
+		brew:set({
+			icon = {
+				string = icon,
+				color = color,
+			},
+			drawing = drawing,
+			label = { string = label },
+		})
+	end)
+end)
+
+sbar.add("bracket", "widgets.brew.bracket", { brew.name }, {
+	background = { color = colors.bg1 },
+})
+
+sbar.add("item", "widgets.brew.padding", {
+	position = "right",
+	width = settings.group_paddings,
+})

.config/sketchybar/items/widgets/init.lua

@@ -2,3 +2,4 @@ require("items.widgets.battery")
 require("items.widgets.volume")
 require("items.widgets.wifi")
 require("items.widgets.cpu")
+require("items.widgets.brew")