From 3e27dbace3f33da5716c544a6bb3aa7fbdfec7b1 Mon Sep 17 00:00:00 2001
From: "Wu, Zhenyu" <wuzhenyu@ustc.edu>
Date: Fri, 30 May 2025 16:22:18 +0800
Subject: [PATCH] Support print_battery_remain() for Linux/WSL

---
 scripts/battery_remain.sh | 6 +++++-
 scripts/helpers.sh        | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/scripts/battery_remain.sh b/scripts/battery_remain.sh
index f456b2f..14cf4de 100755
--- a/scripts/battery_remain.sh
+++ b/scripts/battery_remain.sh
@@ -115,7 +115,11 @@ acpi_battery_remaining_time() {
 
 print_battery_remain() {
 	if is_wsl; then
-		echo "?"	# currently unsupported on WSL
+		local charge_full charge_now current_now
+		charge_full=$(find /sys/class/power_supply/*/charge_full | tail -n1 | xargs cat)
+		charge_now=$(find /sys/class/power_supply/*/charge_now | tail -n1 | xargs cat)
+		current_now=$(find /sys/class/power_supply/*/current_now | tail -n1 | xargs cat)
+		echo $charge_full $charge_now $current_now | awk '{num=($1-$2)/$3; printf "%02d:%02d:%02d", int(num), int(60*num%60), int(3600*num%60)}'
 	elif command_exists "pmset"; then
 		pmset_battery_remaining_time
 	elif command_exists "acpi"; then
diff --git a/scripts/helpers.sh b/scripts/helpers.sh
index d62c5a5..5e31bf2 100644
--- a/scripts/helpers.sh
+++ b/scripts/helpers.sh
@@ -24,7 +24,7 @@ is_chrome() {
 
 is_wsl() {
 	version=$(</proc/version)
-	if [[ "$version" == *"Microsoft"* || "$version" == *"microsoft"* ]]; then
+	if [[ "$version" == *"Linux"* || "$version" == *"Microsoft"* || "$version" == *"microsoft"* ]]; then
 		return 0
 	else
 		return 1