#!/usr/bin/env bash
source "${PROJECT_DIR:?}/lib.sh"
enable_strict_mode

cat <<'EOM'

=> ZRAM

EOM

ZFILE="/etc/default/zramswap"

if [[ ! -f "$ZFILE" ]]; then
	write_text_file_if_changed $'# Configuration minimale pour zramswap\nALGO=zstd\nPERCENT=50\n' "$ZFILE" >/dev/null || true
fi

if grep -q '^ALGO=lz4' "$ZFILE" 2>/dev/null; then
	sed -i 's/^ALGO=lz4/ALGO=zstd/' "$ZFILE"
elif ! grep -q '^ALGO=' "$ZFILE" 2>/dev/null; then
	echo 'ALGO=zstd' >>"$ZFILE"
fi

if ! grep -q '^PERCENT=' "$ZFILE" 2>/dev/null; then
	echo 'PERCENT=50' >>"$ZFILE"
fi

restart_service_if_present zramswap
if ! systemctl is-active --quiet zramswap.service; then
	echo 'Warning: zramswap.service not active' >&2
fi