From a9d1e9f86afb42720f7c5f942d0358f6da20230b Mon Sep 17 00:00:00 2001
From: Tom Alexander <tom@fizz.buzz>
Date: Sat, 29 Oct 2022 15:54:55 -0400
Subject: [PATCH] Add waybar available memory script for Linux.

---
 ...d => waybar_available_memory_freebsd.bash} |  0
 .../files/waybar_available_memory_linux.bash  | 32 +++++++++++++++++++
 ...ry_freebsd => waybar_battery_freebsd.bash} |  0
 ...attery_linux => waybar_battery_linux.bash} |  0
 ansible/roles/sway/tasks/freebsd.yaml         |  4 +--
 ansible/roles/sway/tasks/linux.yaml           |  4 ++-
 6 files changed, 37 insertions(+), 3 deletions(-)
 rename ansible/roles/sway/files/{waybar_available_memory_freebsd => waybar_available_memory_freebsd.bash} (100%)
 create mode 100644 ansible/roles/sway/files/waybar_available_memory_linux.bash
 rename ansible/roles/sway/files/{waybar_battery_freebsd => waybar_battery_freebsd.bash} (100%)
 rename ansible/roles/sway/files/{waybar_battery_linux => waybar_battery_linux.bash} (100%)

diff --git a/ansible/roles/sway/files/waybar_available_memory_freebsd b/ansible/roles/sway/files/waybar_available_memory_freebsd.bash
similarity index 100%
rename from ansible/roles/sway/files/waybar_available_memory_freebsd
rename to ansible/roles/sway/files/waybar_available_memory_freebsd.bash
diff --git a/ansible/roles/sway/files/waybar_available_memory_linux.bash b/ansible/roles/sway/files/waybar_available_memory_linux.bash
new file mode 100644
index 0000000..57f609b
--- /dev/null
+++ b/ansible/roles/sway/files/waybar_available_memory_linux.bash
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+#
+# Read memory usage in FreeBSD
+set -euo pipefail
+IFS=$'\n\t'
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+SLEEP_INTERVAL=${SLEEP_INTERVAL:-30}
+
+while true; do
+    memory_usage=$(free --bytes --wide)
+    total_bytes=$(grep 'Mem:' <<<"$memory_usage" | awk '{print $2}')
+    free_bytes=$(grep 'Mem:' <<<"$memory_usage" | awk '{print $4}')
+
+    free_percent=$((100 * free_bytes / total_bytes))
+    text=""
+
+    if [ $free_bytes -ge $((1024 * 1024 * 1024)) ]; then
+        text="$((free_bytes / 1024 / 1024 / 1024)) GiB"
+    fi
+
+    tooltip="${free_percent}%"
+
+    jq --unbuffered --compact-output <<EOF
+{
+"text":"${text}",
+"tooltip":"${tooltip}",
+"percentage":${free_percent}
+}
+EOF
+    sleep $SLEEP_INTERVAL
+done
diff --git a/ansible/roles/sway/files/waybar_battery_freebsd b/ansible/roles/sway/files/waybar_battery_freebsd.bash
similarity index 100%
rename from ansible/roles/sway/files/waybar_battery_freebsd
rename to ansible/roles/sway/files/waybar_battery_freebsd.bash
diff --git a/ansible/roles/sway/files/waybar_battery_linux b/ansible/roles/sway/files/waybar_battery_linux.bash
similarity index 100%
rename from ansible/roles/sway/files/waybar_battery_linux
rename to ansible/roles/sway/files/waybar_battery_linux.bash
diff --git a/ansible/roles/sway/tasks/freebsd.yaml b/ansible/roles/sway/tasks/freebsd.yaml
index f23f6a3..c8cbcca 100644
--- a/ansible/roles/sway/tasks/freebsd.yaml
+++ b/ansible/roles/sway/tasks/freebsd.yaml
@@ -47,7 +47,7 @@
   loop:
     - src: launch_sway_freebsd.bash
       dest: /usr/local/bin/launch_sway
-    - src: waybar_battery_freebsd
+    - src: waybar_battery_freebsd.bash
       dest: /usr/local/bin/waybar_custom_battery
-    - src: waybar_available_memory_freebsd
+    - src: waybar_available_memory_freebsd.bash
       dest: /usr/local/bin/waybar_custom_available_memory
diff --git a/ansible/roles/sway/tasks/linux.yaml b/ansible/roles/sway/tasks/linux.yaml
index a202539..0c664e9 100644
--- a/ansible/roles/sway/tasks/linux.yaml
+++ b/ansible/roles/sway/tasks/linux.yaml
@@ -8,5 +8,7 @@
   loop:
     - src: launch_sway_linux.bash
       dest: /usr/local/bin/launch_sway
-    - src: waybar_battery_linux
+    - src: waybar_battery_linux.bash
       dest: /usr/local/bin/waybar_custom_battery
+    - src: waybar_available_memory_linux.bash
+      dest: /usr/local/bin/waybar_custom_available_memory