add block volume

README.md

@@ -68,6 +68,12 @@ Show indicator of RSS.
 rss <block_name> <feed_url> <feed_reader_url> <foreground_color_when_no_item> <foreground_color_when_items>
 ```
 
+Show volume.
+
+```
+volume <channel>
+```
+
 Toggler for wireguard.
 
 ```

blocks/volume/main.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"fmt"
+	r "gitnet.fr/deblan/i3-blocks-go/rendering"
+	"os"
+	"os/exec"
+	"regexp"
+	"strconv"
+)
+
+func Volume(channel string) int {
+	output, _ := exec.Command("amixer", "get", channel).Output()
+
+	regex, _ := regexp.Compile(`\[(\d+)%\]`)
+	data := regex.FindStringSubmatch(string(output))
+
+	volume, _ := strconv.Atoi(data[1])
+
+	return volume
+}
+
+func main() {
+	argChannel := os.Args[1]
+
+	volume := Volume(argChannel)
+
+	var symbole string
+
+	if volume == 0 {
+		symbole = "\uf026"
+	} else if volume < 50 {
+		symbole = "\uf027"
+	} else {
+		symbole = "\uf028"
+	}
+
+	value := r.TextWithPadding(fmt.Sprintf("%d%% %s", volume, r.FontAwesome(symbole)), r.FB{
+		Foreground: r.Color("grey1"),
+		Background: r.Color("black1"),
+	})
+
+	options := r.NewBlockOptions()
+	options.FullText = value
+	block := r.Block("volume", options)
+
+	fmt.Println(block)
+}