do pacman update check in go

mako/config

@@ -6,6 +6,6 @@ text-color=#d8dee9
 border-color=#434c5e
 border-radius=7
 max-icon-size=32
-default-timeout=0
+default-timeout=30000
 anchor=top-right
 margin=20

waybar/config

@@ -122,7 +122,7 @@
 		"format": " {}",
 		"return-type": "json",
 		"interval": 3600, // every 30 minutes
-		"exec": "~/.config/waybar/modules/update-check.sh",
+		"exec": "go run ~/.config/waybar/modules/update-check.go",
 		"exec-if": "exit 0",
 		"on-click": "~/.config/waybar/modules/update-system.sh; pkill -RTMIN+8 waybar", // update system
 		"signal": 8,

waybar/modules/update-check.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+type jsonOutput struct {
+	Text       string `json:"text,omitempty"`
+	Alt        string `json:"alt,omitempty"`
+	Tooltip    string `json:"tooltip,omitempty"`
+	Class      string `json:"class,omitempty"`
+	Percentage int    `json:"percentage,omitempty"`
+}
+
+func main() {
+	pac, err := exec.Command("checkupdates").CombinedOutput()
+	if err != nil {
+		log.Fatal("could not get pacman updates: ", string(pac))
+	}
+
+	aur, err := exec.Command("yay", "--devel", "-Qu").CombinedOutput()
+	if err != nil {
+		log.Fatal("could not get aur updates: ", string(aur))
+	}
+
+	updates := []string{}
+	for _, line := range strings.Split(string(pac), "\n") {
+		if len(line) > 0 {
+			updates = append(updates, line)
+		}
+	}
+
+	for _, line := range strings.Split(string(aur), "\n") {
+		if len(line) > 0 {
+			updates = append(updates, line)
+		}
+	}
+
+	n := len(updates)
+
+	class := "no-updates"
+	if n > 0 {
+		class = "updates"
+	}
+
+	o := jsonOutput{
+		Text:       fmt.Sprintf("%d", n),
+		Alt:        fmt.Sprintf("%d", n),
+		Tooltip:    strings.Join(updates, "\n"),
+		Class:      class,
+		Percentage: n,
+	}
+
+	json.NewEncoder(os.Stdout).Encode(o)
+}

waybar/modules/update-check.sh

@@ -1,14 +0,0 @@
-#!/bin/bash
-aur_updates=$(yay --devel -Qqmu)
-pac_updates=$(checkupdates | awk '{print $1}')
-text=$(printf "${aur_updates}${pac_updates}" | wc -l)
-alt=$text
-tooltip=$(printf "${pac_updates}${aur_updates}" | sed ':a;N;$!ba;s/\n/\\n/g')
-percentage=$text
-class="no-updates"
-
-if [[ $text -gt 0 ]]; then
-	class="updates"
-fi
-
-echo "{\"text\": \"$text\", \"alt\": \"$alt\", \"tooltip\": \"$tooltip\", \"class\": \"$class\", \"percentage\": $percentage }"

waybar/style.css

@@ -66,9 +66,11 @@ window#waybar {
 	border-bottom-right-radius: 7px;
 }
 
+/*
 #tray {
 	background: rgba(76, 86, 106, 0.75);
 }
+*/
 
 #custom-pacman.no-updates {
 	background: rgba(163, 190, 140, 0.75);