home/polybar: add exchangerate module

home/ui/bar/polybar/config.nix

@@ -15,7 +15,7 @@ with lib;
     modules = {
       left = "xmonad";
       center = "date wifi";
-      right = "volume lang time";
+      right = "exchangerate volume lang time";
     };
   };
 
@@ -76,6 +76,17 @@ with lib;
     tail = true;
   };
 
+  "module/exchangerate" = {
+    type = "custom/script";
+    exec = "~/scripts/exchangerate.sh";
+    interval = 60;
+    format = {
+      prefix = "USD: ";
+      padding = 1;
+    };
+
+  };
+
   "global/wm" = {
     margin = {
       bottom = 0;

scripts/exchangerate.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 set -e
 
@@ -24,6 +24,9 @@ curl_exchangerate () {
     sed -e "s#<\/\?\w\+>##g"
 }
 
+# bar_name=xmobar
+bar_name=polybar
+
 cc=($(curl_cbr))
 
 diff=$(echo ${cc[-1]} ${cc[-2]} | awk '{ print $1 - $2 }')
@@ -35,7 +38,15 @@ if [ ${diff:0:1} == '-' ]; then
   color='#ff5555'
 fi
 
-echo "${cc[-1]} (<fc=${color}>${arror}<hspace=3/>${diff}</fc>)"
+case $bar_name in
+  "xmobar")
+    echo "${cc[-1]} (<fc=${color}>${arror}<hspace=3/>${diff}</fc>)"
+    ;;
+
+  "polybar")
+    echo "${cc[-1]} (%{F${color}}${arror}%{O3}${diff}%{F-})"
+    ;;
+esac
 
 exit 0