feat: new api for scripts

17 files changed, 452 insertions, 350 deletions

diff --git a/scripts/cli/noc b/scripts/cli/noc
index 575566c..63bee86 100755
--- a/scripts/cli/noc
+++ b/scripts/cli/noc
@@ -1,6 +1,19 @@
 #!/bin/sh
 
-# Remove empty lines and all the comments starting with "#"
+. "lib_common.sh"
+
+help() {
+cat << EOF
+${0}: Remove empty lines and all the comments starting with '#'.
+options:
+ -h              Print this message and exit
+EOF
+exit 0
+}
+
+[ "${1}" = "-h" ] && help
+
+[ ${#} -gt 0 ] && invalid_use
 
 for file in "${@}"; do
 	sed -i "s/\s*#.*//g; /^$/ d" "${file}"
diff --git a/scripts/cli/nospac b/scripts/cli/nospac
index 6ba466a..7ee5b36 100755
--- a/scripts/cli/nospac
+++ b/scripts/cli/nospac
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+. "lib_common.sh"
+
 help() {
 cat << EOF
 ${0}: Replace all the spaces in file and directory
@@ -7,13 +9,12 @@ names with "_" in in the current directory.
 options:
  -h              Print this message and exit
 EOF
+exit 0
 }
 
-if [ ${#} -gt 0 ]; then
-	[ ${#} = 1 ] && [ "${1}" = "-h" ] && help && exit 0
-	printf "%s: Invalid usage\nTry '%s -h' for help.\n" "${0}" "${0}"
-	exit 1
-fi
+[ "${1}" = "-h" ] && help
+
+[ ${#} -gt 0 ] && invalid_use
 
 for file in ./*; do
 	newfile=$(echo "${file}" | tr ' ' '_')
diff --git a/scripts/cli/sdev b/scripts/cli/sdev
deleted file mode 100755
index c227771..0000000
--- a/scripts/cli/sdev
+++ /dev/null
@@ -1,80 +0,0 @@
-#!/bin/sh
-
-. slib
-
-help() {
-cat << EOF
-${0}: Disable and Enable devices
-options:
- -e [dev]        Enable dev
- -d [dev]        Disable dev
- -t [dev]        Toggle dev
- -l              List devices
- -h              Print this message and exit
-
-Note: Nondescriptive inputs may disable/enable unwanted devices.
-EOF
-
-exit 0
-}
-
-get_id() {
-	if ! dev=$(xinput list --name-only | grep -i -m1 "${1}" ); then
-		err "Couldn't get device"
-	fi
-	id="${dev#∼ }"
-}
-
-xenable() {
-	echo "${id}"
-
-	if ! xinput enable "${1}" > /dev/null 2>&1; then
-		err "Failed to enable dev."
-	else
-		exit 0
-	fi
-}
-
-xdisable() {
-	echo "${id}"
-
-	if ! xinput disable "${1}" > /dev/null 2>&1; then
-		err "Failed to disable dev."
-	else
-		exit 0
-	fi
-}
-
-check_program "xinput"
-
-while getopts "e:d:t:lh" option; do
-	case "${option}" in
-	e)
-		get_id "${OPTARG}"
-		xenable "${id}"
-	;;
-	d)
-		get_id "${OPTARG}"
-		xdisable "${id}"
-	;;
-	t)
-		get_id "${OPTARG}"
-
-		[ "${id}" = "${dev}" ] && xdisable "${id}"
-		xenable "${id}"
-	;;
-	l)
-		if ! xinput list 2>/dev/null; then
-			err "Listing Failed"
-		else
-			exit 0
-		fi
-	;;
-	h) help ;;
-
-	*) invalid_use -h ;;
-
-	esac
-done
-
-invalid_use
diff --git a/scripts/cli/slight b/scripts/cli/slight
index 54edbcd..4efbf19 100755
--- a/scripts/cli/slight
+++ b/scripts/cli/slight
@@ -1,6 +1,7 @@
 #!/bin/sh
 
-. slib
+. "lib_common.sh"
+. "lib_handle.sh"
 
 help() {
 cat << EOF
@@ -14,34 +15,22 @@ options:
 
 NOTE: Script interprets values as percentages
 EOF
-
 exit 0
 }
 
-check_program "brightnessctl"
-
+brightness_handle check_program
 [ ${#} != 1 ] && [ ${#} != 2 ] && invalid_use
 
 while getopts "i:d:s:ph" option; do
 	case "${option}" in
-	i) run --reload-status "brightnessctl set +${OPTARG}%" ;;
-
-	d) run --reload-status "brightnessctl set ${OPTARG}-%" ;;
-
-	s) run --reload-status "brightnessctl set ${OPTARG}%" ;;
-
-	p)
-		if ! echo $(( ($(brightnessctl g) * 100)  / $(brightnessctl m) )); then
-			err "Failed to get current brightness"
-		else
-			exit 0
-		fi
-	;;
+	i) run --reload-status "brightness_handle up ${OPTARG}"    ;;
+	d) run --reload-status "brightness_handle down ${OPTARG}"  ;;
+	s) run --reload-status "brightness_handle set ${OPTARG}"   ;;
+	t) run --reload-status "brightness_handle toggle"          ;;
+	p) brightness_handle get-current ;;
 	h) help ;;
 
 	*) invalid_use -h ;;
-
 	esac
 done
-
 invalid_use
diff --git a/scripts/cli/svol b/scripts/cli/svol
index 0488633..5ce6848 100755
--- a/scripts/cli/svol
+++ b/scripts/cli/svol
@@ -1,10 +1,11 @@
 #!/bin/sh
 
-. slib
+. "lib_common.sh"
+. "lib_handle.sh"
 
 help() {
 cat << EOF
-${0}: Wrapper script to change volume
+${0}: Change volume
 options:
  -i [Vol]        Increase volume by Vol
  -d [Vol]        Decrease volume by Vol
@@ -13,37 +14,24 @@ options:
  -t              Toggle between mute and unmute
  -h              Print this message and exit
 EOF
-
 exit 0
 }
 
-check_program "pactl" "pulseaudio must be installed"
+volume_handle check_program
 
 [ $# != 1 ] && [ $# != 2 ] && invalid_use
 
 while getopts "i:d:s:pth" option; do
 	case "${option}" in
-	i) run --reload-status "pactl set-sink-volume @DEFAULT_SINK@ +${OPTARG}%" ;;
-
-	d) run --reload-status "pactl set-sink-volume @DEFAULT_SINK@ -${OPTARG}%" ;;
-
-	s) run --reload-status "pactl set-sink-volume @DEFAULT_SINK@ ${OPTARG}%" ;;
-
-	t) run --reload-status "pactl set-sink-mute @DEFAULT_SINK@ toggle" ;;
-
-	p)
-		if ! pactl get-sink-volume @DEFAULT_SINK@ \
-			| sed -e 's,.* \([0-9][0-9]*\)%.*,\1,' | head -n1 2>/dev/null; then
-			err "Failed to get current volume"
-		else
-			exit 0
-		fi
-	;;
+	i) run --reload-status "volume_handle up ${OPTARG}"   ;;
+	d) run --reload-status "volume_handle down ${OPTARG}" ;;
+	s) run --reload-status "volume_handle set ${OPTARG}"  ;;
+	t) run --reload-status "volume_handle toggle"         ;;
+	p) volume_handle get-current ;;
 	h) help ;;
 
 	*) invalid_use -h ;;
 
 	esac
 done
-
 invalid_use
diff --git a/scripts/daemons/bat-checkd b/scripts/daemons/bat-checkd
new file mode 100755
index 0000000..2c272b8
--- /dev/null
+++ b/scripts/daemons/bat-checkd
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# FIXME: hardcoded battery
+BAT="/sys/class/power_supply/BAT0"
+
+while true; do
+    percent=$(cat "${BAT}/capacity")
+    status=$(cat "${BAT}/status")
+
+    # Only notify if battery is low AND not charging
+    if [ "${status}" = "Discharging" ] && [ "${percent}" -lt 7 ]; then
+        nsend -s "Battery" "Critically low: ${percent}%"
+    fi
+
+    sleep 120
+done
diff --git a/scripts/daemons/mail-syncd b/scripts/daemons/mail-syncd
new file mode 100755
index 0000000..e317ace
--- /dev/null
+++ b/scripts/daemons/mail-syncd
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+while true; do
+    mbsync -a
+    sleep 300
+done
diff --git a/scripts/daemons/notifd b/scripts/daemons/notifd
new file mode 100755
index 0000000..9ad5697
--- /dev/null
+++ b/scripts/daemons/notifd
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+. "lib_handle.sh"
+
+FIFO=/tmp/noti.fifo
+FILE=/tmp/noti.txt
+
+[ -p "${FIFO}" ] || mkfifo "${FIFO}"
+
+exec 3<"${FIFO}"
+exec 4>"${FIFO}"
+
+tpid=""
+
+cancel() {
+    [ -n "${tpid}" ] && kill "${tpid}" 2>/dev/null
+    tpid=""
+}
+
+while read n <&3; do
+    [ "${n}" = "-1" ] && { cancel; continue; }
+
+    case "${n}" in ''|*[!0-9]*) continue ;; esac
+
+    cancel
+
+    [ "${n}" -gt 0 ] || { :>"${FILE}"; notify_handle reload; continue; }
+
+    (
+        sleep "${n}"
+        :>"${FILE}"
+        notify_handle reload
+    ) &
+    tpid=$!
+done
diff --git a/scripts/gui/br b/scripts/gui/br
index 474b1b1..428e24b 100755
--- a/scripts/gui/br
+++ b/scripts/gui/br
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-. slib
+. "lib_common.sh"
 
 help() {
 cat << EOF
@@ -9,33 +9,25 @@ options:
 [link]           Open link
  -h              Print this message and exit
 
-NOTE: bookmarks file is located at ~/.config/sites/bookmarks
+NOTE: bookmarks file is located at ~/.config/sites/bookmarks.txt
 EOF
-
 exit 0
 }
 
-alias dmenucmd="dmenu -bw 1 -c -g 1 -l 25"
-
-[ -z "${BROWSER}" ] && browser="qutebrowser" || browser="${BROWSER}"
+[ -z "${BROWSER}" ] && BROWSER="firefox"
 
 if [ "${#}" -eq 0 ]; then
+	bookmark_path="${XDG_CONFIG_HOME:-$HOME/.config}/sites/bookmarks.txt"
+	[ -e "${bookmark_path}" ] || err "Couldn't find bookmarks file"
 
-	link_file="${XDG_CONFIG_HOME:-$HOME/.config}/sites/bookmarks.txt"
-
-	check_program "dmenu"
+	. "lib_handle.sh"
 
-	[ -z "${XDG_HOME_CONFIG}" ] || link_file="${XDG_HOME_CONFIG}"/sites/bookmarks.txt
-	[ -e "${link_file}" ] || err "Couldn't find bookmarks file"
+	link=$(< "${bookmark_path}" menu_handle center)
 
-	link=$(< "${link_file}" dmenucmd)
-
-	[ -z "${link}" ] || "${browser}" "${link}"
+	[ -z "${link}" ] || "${BROWSER}" "${link}"
+fi
 
-elif [ "${#}" -eq 1 ]; then
-	[ "${1}" = "-h" ] && help
+[ "${#}" -ne 1 ] && invalid_use
+[ "${1}" = "-h" ] && help
 
-	"${browser}" "${1}"
-else
-	invalid_use
-fi
+"${BROWSER}" "${1}"
diff --git a/scripts/gui/nsend b/scripts/gui/nsend
index 1bfc1f4..e1cbd78 100755
--- a/scripts/gui/nsend
+++ b/scripts/gui/nsend
@@ -1,34 +1,44 @@
 #!/bin/sh
 
-. slib
+. "lib_common.sh"
+. "lib_handle.sh"
 
 help() {
 cat << EOF
-${0}: Wrapper script to send notifications
+${argv0}: Send notifications
 options:
- -s [Name] [Msg] Send Msg with Name
- -s [Msg]        Send Msg Without Name
+ -s [Msg]        Send Msg
+ -t [Time]       Disappear after Time (in second)
  -h              Print this message and exit
-EOF
 
+Note: time must be between 0 and 300,
+by default time is set to unlimited.
+EOF
 exit 0
 }
 
-case "${#}" in
-1)
-	[ "${1}" = "-h" ] && help
-	invalid_use
-;;
-2)
-	[ "${1}" = "-s" ] || invalid_use
-	notification_string="${2}"
-;;
-3)
-	[ "${1}" = "-s" ] || invalid_use
-	notification_string="${2}: ${3}"
-;;
-*) invalid_use ;;
-esac
-
-
-send_notification "${notification_string}"
+[ "${#}" -eq 0 ] && invalid_use
+
+time=-1
+while getopts "s:t:h" option; do
+	case "${option}" in
+	s) msg="${OPTARG}"  ;;
+	t)
+		time="${OPTARG}"
+
+		case "${time}" in
+			''|*[!0-9]*) err "Not a number: ${time}" ;;
+		esac
+
+		[ "${time}" -gt 300 ] && err "Out of range: ${time}"
+	;;
+	h) help             ;;
+
+	*) invalid_use -h   ;;
+	esac
+done
+
+shift $((OPTIND - 1))
+[ ${#} != 0 ] && invalid_use
+
+notify_handle send "${time}" "${msg}"
diff --git a/scripts/gui/sclip b/scripts/gui/sclip
index 4854aa1..56ea57f 100755
--- a/scripts/gui/sclip
+++ b/scripts/gui/sclip
@@ -1,71 +1,72 @@
 #!/bin/sh
 
-. slib
+. "lib_common.sh"
+. "lib_handle.sh"
 
 help() {
 cat << EOF
-${0}: print the clipboard content
+${progname}: print the clipboard content
 options:
- -h              Print this message and exit
  -s              Do not send notifications
  -c [text]       Copy text to clipboard
  -f [file]       Copy content of file into clipboard
  -i              Copy standart input into clipboard
+ -h              Print this message and exit
 EOF
-
 exit 0
 }
 
-check_program "xclip"
+clipboard_handle check_program
+
+if [ "${#}" -eq 0 ]; then
+	clipboard_handle get-clipboard
+	exit $?
+fi
 
-i_flg=0
+read_stdin=0
 silent=0
 while getopts "f:c:sih" option; do
 	case "${option}" in
 	f) filepath="${OPTARG}" ;;
-
 	c) input="${OPTARG}" ;;
-
 	s) silent=1 ;;
-
-	i) i_flg=1 ;;
-
+	i) read_stdin=1 ;;
 	h) help ;;
 
 	*) invalid_use -h ;;
 	esac
 done
-
 shift $((OPTIND - 1))
 
 [ "${#}" -ne 0 ] && invalid_use
 
 if [ -n "${filepath}" ]; then
-	mime_type=$(file --mime-type -b "${filepath}")
-
-	if [ "${silent}" -eq 1 ]; then
-		run "xclip -selection clipboard -t ${mime_type} -i ${filepath}"
-	fi
+	mime_type=$(file_handle get-mime_type "$filepath") || {
+		err "Failed to detect mime type"; exit 1;}
 
-	run --success-notify "${filepath} copied" \
-		--failure-notify "${filepath} failed to copy" \
-		"xclip -selection clipboard -t ${mime_type} -i ${filepath}"
-fi
+	clipboard_handle file "${mime_type}" "${filepath}"
+	status=$?
 
-[ "${i_flg}" -eq 1 ] && input=$(cat)
+else
+	[ -z "$input" ] && [ "$read_stdin" -eq 1 ] && input=$(cat)
+	[ -z "$input" ] && err "Empty input"
 
-if [ -n "${input}" ]; then
-	# Don't use `run` since pipes are used
-	printf '%s' "${input}" | xclip -selection clipboard
+	printf '%s' "${input}" | clipboard_handle text
+	status=$?
+fi
 
-	if [ $? -eq 0 ]; then
-		[ "${silent}" -eq 0 ] && send_notification "${argv0}:" "'${input}' copied"
-		exit 0
+if [ "${silent}" -eq 0 ]; then
+	if [ "${status}" -eq 0 ]; then
+		if [ -n "${filepath}" ]; then
+			notify_handle "Copied file: ${filepath}"
+		else
+			notify_handle "Copied text"
+		fi
+	else
+		if [ -n "${filepath}" ]; then
+			notify_handle "Failed to copy file: ${filepath}"
+		else
+			notify_handle "Failed to copy text"
+		fi
 	fi
-
-	[ "${silent}" -eq 0 ] && send_notification "${argv0}:" "'${input}' failed to copy"
-
-	exit 1
 fi
-
-run "xclip -o -selection clipboard"
diff --git a/scripts/gui/sdev b/scripts/gui/sdev
new file mode 100755
index 0000000..340bdb1
--- /dev/null
+++ b/scripts/gui/sdev
@@ -0,0 +1,49 @@
+#!/bin/sh
+
+. "lib_common.sh"
+. "lib_handle.sh"
+
+help() {
+cat << EOF
+${0}: Disable and Enable devices
+options:
+ -e [dev]        Enable dev
+ -d [dev]        Disable dev
+ -t [dev]        Toggle dev
+ -l              List devices
+ -h              Print this message and exit
+
+Note: Nondescriptive inputs may disable/enable unwanted devices.
+EOF
+exit 0
+}
+
+input_device_handle check_program
+
+get_id() {
+    id=$(input_device_handle get-id "$1") || exit 1
+    printf '%s\n' "$id"
+}
+
+while getopts "e:d:t:lh" option; do
+	case "${option}" in
+	e) run "input_device_handle enable $(get_id ${OPTARG})" ;;
+	d) run "input_device_handle disable $(get_id ${OPTARG})" ;;
+	t)
+		id=$(get_id ${OPTARG})
+		if input_device_handle is_enabled "${id}"; then
+			input_device_handle disable "${id}"
+		else
+			input_device_handle enable "${id}"
+		fi
+		exit $?
+	;;
+	l) run "input_device_handle list" ;;
+	h) help ;;
+
+	*) invalid_use -h ;;
+
+	esac
+done
+
+invalid_use
diff --git a/scripts/gui/shot b/scripts/gui/shot
index 712f60b..a133c16 100755
--- a/scripts/gui/shot
+++ b/scripts/gui/shot
@@ -1,6 +1,7 @@
 #!/bin/sh
 
-. slib
+. "lib_common.sh"
+. "lib_handle.sh"
 
 help() {
 cat << EOF
@@ -8,29 +9,26 @@ ${0}: Wrapper script to take screenshots
 options:
  -d [File]       Write to File
  -s              Select the area with the cursor
+ -w              Select the area with the cursor
  -h              Print this message and exit
 
-NOTE: save directory is ~/pics/screenshot
+NOTE: save directory is ~/media/photo/screenshot
 EOF
-
 exit 0
 }
 
-check_program "scrot"
-
+screenshot_handle check_program
 default_dir="${XDG_SCREENSHOT_DIR:-${HOME}/media/photo/screenshot}"
 
-s_flg=""
-while getopts "d:sh" option; do
+mode="fullscreen"
+while getopts "d:swh" option; do
 	case "${option}" in
-	d) input="${OPTARG}" ;;
-
-	s) s_flg="1" ;;
-
-	h) help ;;
-
-	*) invalid_use -h ;;
+	d) input="${OPTARG}"     ;;
+	s) mode="select"         ;;
+	w) mode="focused-window" ;;
+	h) help                  ;;
 
+	*) invalid_use -h        ;;
 	esac
 done
 
@@ -48,12 +46,13 @@ outfile="${input}"
 [ -d "${input}" ] && outfile="${input}/$(date '+%b%d::%H%M%S').png"
 
 if [ ! -e "$(dirname "${outfile}")" ]; then
-	mkdir -p "$(dirname "${outfile}")" > /dev/null 2>&1 \
-	|| err "Failed to create directory"
+	mkdir -p "$(dirname "${outfile}")" ||
+		err "Failed to create directory ${outfile}"
 fi
 
-if [ "${s_flg}" = "1" ]; then
-	run --reload-compositor "scrot -zs ${outfile}" "${outfile}"
+if [ "${mode}" = "select" ]; then
+	run --no-exit --reload-compositor \
+		"screenshot_handle ${mode} ${outfile}" && echo "${outfile}"
 else
-	run "scrot -z ${outfile}" "${outfile}"
+	screenshot_handle "${mode}" "${outfile}" && echo "${outfile}"
 fi
diff --git a/scripts/gui/sslock b/scripts/gui/sslock
index 26ba2cf..8a3284e 100755
--- a/scripts/gui/sslock
+++ b/scripts/gui/sslock
@@ -1,59 +1,44 @@
 #!/bin/sh
 
-. slib
+. "lib_common.sh"
+. "lib_handle.sh"
 
 help() {
 cat << EOF
-${0}: Wrapper script to take screenshots
+${0}: Lock screen
 options:
- -n              Black screen
- -b              Blur
- -c              Take the current state of the desktop
+ -n              Black screen lock
  -h              Print this message and exit
 EOF
-
 exit 0
 }
 
-check_program "slock"
-
-blur=0
-set_current_state=0
-current_wallpaper="${XDG_CACHE_HOME:-$HOME/.cache}/wallpaper/current"
-while getopts "bcnh" option; do
-	case "${option}" in
-	b)
-		check_program "mogrify" "imagemagick must be installed"
-		blur=1 ;;
-
-	c)
-		check_program "scrot"
-		set_current_state=1
-	;;
-	n)
-		slock
-		exit 0;;
-
-	h) help ;;
-
-	*) invalid_use -h ;;
+trap 'rm -f "${lock_image}"' EXIT INT TERM HUP
 
-	esac
-done
-
-shift $((OPTIND - 1))
+if [ "${#}" -eq 1 ]; then
+	[ "${1}" = "-h" ] && help
+	[ "${1}" = "-n" ] || invalid_use
+	screenlock_handle
+	exit 0
+fi
 
-[ "${#}" -eq 0 ] || invalid_use
+[ "${#}" -ne 0 ] && invalid_use
 
-background="/tmp/$(date '+%b%d::%H%M%S').png"
+mode=$(printf "Blank\nBlur\nWallpaper" | menu_handle default)
+if [ "${mode}" = "Blank" ]; then
+	screenlock_handle
+	exit 0
+fi
 
-if [ "$set_current_state" -eq 0 ]; then
-	# Avoid distorting the wallpaper when calling `mogrify`
-	cp "${current_wallpaper}" "${background}"
-else
-	scrot -z "${background}"
+lock_image=$(get_random_filename .png)
+if [ "${mode}" = "Blur" ]; then
+	screenshot_handle fullscreen "${lock_image}"
+	image_handle blur "${lock_image}"
 fi
 
-[ "${blur}" -eq 1 ] && mogrify -blur 0x8 "${background}"
+if [ "${mode}" = "Wallpaper" ]; then
+	current_wallpaper="${XDG_CACHE_HOME:-$HOME/.cache}/wallpaper/current"
+	cp "${current_wallpaper}" "${lock_image}"
+fi
 
-slock -f "${background}"
+screenlock_handle "${lock_image}"
diff --git a/scripts/gui/swall b/scripts/gui/swall
index a225481..5f22ec8 100755
--- a/scripts/gui/swall
+++ b/scripts/gui/swall
@@ -1,6 +1,7 @@
 #!/bin/sh
 
-. slib
+. "lib_common.sh"
+. "lib_handle.sh"
 
 help() {
 cat << EOF
@@ -12,58 +13,53 @@ options:
 
 NOTE: default directory is ~/.local/share/wallpapers
 A symlink at ~/.cache/wallpapers/current is created pointing to the selected wallpaper.
-
 EOF
-
 exit 0
 }
 
-check_program "xwallpaper"
-
+wallpaper_handle check_program
 SYMLINK="${XDG_CACHE_HOME:-$HOME/.cache}/wallpaper/current"
 
-if [ "${#}" = 0 ]; then
-	input="${XDG_DATA_HOME:-$HOME/.local/share}/wallpapers"
-elif [ "${#}" != 1 ] && [ "${#}" != 2 ]; then
-	invalid_use
-fi
+[ "${#}" -eq 0 ] && input="${XDG_DATA_HOME:-$HOME/.local/share}/wallpapers"
+[ "${#}" -gt 2 ] && invalid_use
 
-while getopts "hcld:" option; do
+while getopts "cd:h" option; do
 	case "${option}" in
 	c)
-		unlink "${SYMLINK}"
-		run --reload-compositor "xwallpaper --clear" ;;
-
+		rm -f "${SYMLINK}"
+		run --reload-compositor "wallpaper_handle clear"
+	;;
 	d) input="${OPTARG}" ;;
-
 	h) help ;;
 
 	*) invalid_use -h ;;
-
 	esac
 done
-
 shift $((OPTIND - 1))
 
 [ "${#}" != 0 ] && invalid_use
 
 if [ -n "${input}" ]; then
-	case $(file -L -b --mime-type "${input}") in
-	image/*) image="${input}" ;;
-
-	inode/directory) waldir="${input}" ;;
-
-	*) err "Couldn't read given file" ;;
-	esac
+	if [ -d "${input}" ]; then
+		waldir="${input}"
+	elif [ -f "${input}" ]; then
+		case "${input}" in
+			*.jpg|*.JPG|*.jpeg|*.JPEG|*.png|*.PNG) image="${input}" ;;
+			*) err "Unsupported file type" ;;
+		esac
+	else
+		err "Couldn't read given file"
+	fi
 fi
 
-if [ -n "${waldir}" ]; then
-	image=$(find "${waldir}" -iregex '.*.\(jpg\|jpeg\|png\)' 2>/dev/null \
-	| shuf -n 1 )
+if [ -d "$waldir" ]; then
+	image=$(
+		find "$waldir" \( -name '*.jpg' -o -name '*.jpeg' -o -name '*.png' \) 2>/dev/null |
+			awk 'BEGIN{srand()} {a[NR]=$0} END{if(NR>0) print a[int(rand()*NR)+1]}'
+		)
 fi
 
 [ -z "${image}" ] && err "No image file found"
 
-mkdir -p "$(dirname "${SYMLINK}")" && \
-	ln -sf "${image}" "${SYMLINK}" && \
-	run "xwallpaper --zoom ${image}" "${image}"
+mkdir -p "$(dirname "${SYMLINK}")" && ln -sf "${image}" "${SYMLINK}"
+wallpaper_handle set "${image}" && echo "${image}"
diff --git a/scripts/slib b/scripts/lib/lib_common.sh
index 0df4a50..58ee5ba 100755..100644
--- a/scripts/slib
+++ b/scripts/lib/lib_common.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-argv0=$(basename "${0}")
+progname=$(basename "${0}")
 
 # @FUNCTION: err
 # @USAGE: [-x] <message> ...
@@ -12,10 +12,10 @@ argv0=$(basename "${0}")
 #
 # This function is intended for fatal errors; it always exits the script.
 # @EXAMPLE:
-# err "Invalid usage" "Try '${argv0} -h' for help."
+# err "Invalid usage" "Try '${progname} -h' for help."
 err() {
 	if [ "${1}" != "-x" ]; then
-		printf "%s: " "${argv0}"
+		printf "%s: " "${progname}"
 	else
 		shift
 	fi
@@ -36,8 +36,8 @@ err() {
 # 	"Try 'program -h' for help."
 
 invalid_use() {
-	[ "${1}" = "-h" ] && err -x "Try '${argv0} -h' for help."
-	err "Invalid usage" "Try '${argv0} -h' for help."
+	[ "${1}" = "-h" ] && err -x "Try '${progname} -h' for help."
+	err "Invalid usage" "Try '${progname} -h' for help."
 }
 
 # @FUNCTION: check_program
@@ -59,23 +59,6 @@ check_program() {
 	err "${1} must be installed"
 }
 
-# @FUNCTION: send_notification
-# @USAGE: send_notification <message> ...
-# @DESCRIPTION:
-# Write a notification message to a temporary file and trigger a dwm notification signal.
-# The message is written to /tmp/noti.txt. If writing fails, a warning is printed to stderr.
-# After writing, a dwm signal is sent using `xsetroot -name "fsignal:1"`.
-#
-# @EXAMPLE:
-# Send a desktop notification with the message "Backup complete".
-#
-# send_notification "Backup complete"
-
-send_notification() {
-	echo "$@" > /tmp/noti.txt || echo "Warning: failed to write to notification file" >&2
-	xsetroot -name "fsignal:1"
-}
-
 # @FUNCTION: get_random_filename
 # @USAGE: get_random_filename [parentdir] <extension>
 # @DESCRIPTION:
@@ -84,7 +67,7 @@ send_notification() {
 # @EXAMPLE:
 # Get a filepath in the `/var` directory with the extension `.png`
 #
-# get_random_filename /var .png
+# get_random_filename .png /var
 
 get_random_filename() {
 	[ "${#}" -eq 2 ] && parentdir="${2}" || parentdir="/tmp"
@@ -131,42 +114,21 @@ get_random_filename() {
 #       "xwallpaper --zoom ${image}" "Wallpaper updated" "Wallpaper failed"
 
 run() {
-	relstat=0
-	compstat=0
-	exitval=0
-
-	while [ $# -gt 0 ]; do
-		case "$1" in
-			--reload-status) relstat=1 ;;
-			--reload-compositor) compstat=1 ;;
-			--success-notify) success_msg="${2}"; shift ;;
-			--failure-notify) failure_msg="${2}"; shift ;;
-			*) break;
-		esac
-		shift
-	done
-
-	if [ "${compstat}" -eq 1 ]; then
-		pgrep -x picom > /dev/null && killall picom
-	fi
-
-	if ${1}; then
-		[ -n "${2}" ] && echo "${2}"
-		[ -n "${success_msg}" ] && send_notification "${argv0}:" "${success_msg}"
-	else
-		[ -n "${3}" ] && err "${3}"
-		[ -n "${failure_msg}" ] && send_notification "${argv0}:" "${failure_msg}"
+	no_exit=0
+	reload_status=0
+	reload_compositor=0
 
-		exitval=1
-	fi
+	[ "${1}" = "--no-exit" ]           && no_exit=1           && shift
+    	[ "${1}" = "--reload-status" ]     && reload_status=1     && shift
+    	[ "${1}" = "--reload-compositor" ] && reload_compositor=1 && shift
 
-	if [ "${relstat}" -eq 1 ]; then
-		slreload || echo "Warning: Failed to reload slstatus" >&2
-	fi
+	trap '
+		[ "${reload_status}" -eq 1 ] && status_handle reload
+		[ "${reload_compositor}" -eq 1 ] && compositor_handle start
+	' EXIT
 
-	if [ "${compstat}" -eq 1 ]; then
-    		picom -b || echo "Warning: Failed to start picom" >&2
-	fi
+	[ "${reload_compositor}" -eq 1 ] && compositor_handle stop
 
-	exit "${exitval}"
+	eval "${@}"
+	[ "${no_exit}" -eq 1 ] || exit "${?}"
 }
diff --git a/scripts/lib/lib_handle.sh b/scripts/lib/lib_handle.sh
new file mode 100644
index 0000000..d4524d9
--- /dev/null
+++ b/scripts/lib/lib_handle.sh
@@ -0,0 +1,140 @@
+#!/bin/sh
+. "lib_common.sh"
+
+volume_handle() {
+	case "${1}" in
+	"up") pactl set-sink-volume @DEFAULT_SINK@ +"${2}"% ;;
+	"down") pactl set-sink-volume @DEFAULT_SINK@ -"${2}"% ;;
+	"set") pactl set-sink-volume @DEFAULT_SINK@ "${2}"% ;;
+	"toggle") pactl set-sink-mute @DEFAULT_SINK@ toggle;;
+	"get-current")
+		pactl get-sink-volume @DEFAULT_SINK@ |
+			sed -n 's/.* \([0-9][0-9]*%\).*/\1/p'
+		;;
+	"check_program")
+		check_program "pactl" "pulseaudio must be installed" ;;
+
+	esac
+}
+
+brightness_handle() {
+	case "${1}" in
+	"up") brightnessctl set +"${2}"% ;;
+	"down") brightnessctl set "${2}"-% ;;
+	"set") brightnessctl set "${2}"% ;;
+	"get-current")
+		printf '%s\n' \
+			$(( ($(brightnessctl g) * 100)  / $(brightnessctl m) ))
+		;;
+	"check_program") check_program "brightnessctl"
+	esac
+}
+
+screenshot_handle() {
+	case "${1}" in
+	"fullscreen") flags="-z" ;;
+	"select") flags="-zs" ;;
+	"focused-window") flags="-zu" ;;
+	"check_program")
+		check_program "scrot"
+		return
+	;;
+	esac
+	shift
+	scrot "${flags}" "${1}"
+}
+
+wallpaper_handle() {
+	case "${1}" in
+	"clear") xwallpaper --clear ;;
+	"set") xwallpaper --zoom "${2}" ;;
+	"check_program") check_program "xwallpaper" ;;
+	esac
+
+}
+
+screenlock_handle() {
+	if [ "${#}" -eq 0 ]; then
+		slock
+	else
+		slock -f "${1}"
+	fi
+}
+
+input_device_handle() {
+	case "$1" in
+	"enable") xinput enable "${2}";;
+	"disable") xinput disable "${2}";;
+	"list") xinput list ;;
+	"get-id")
+		dev=$(xinput list --name-only | grep -i -m1 "${1}" ) || return 1
+		printf "${dev#∼ }"
+	;;
+	"is_enabled")
+    		xinput list-props "${2}" | grep -q "Device Enabled.*1$"
+    		return $?
+		;;
+	"check_program") check_program "xclip" ;;
+	esac
+}
+
+clipboard_handle() {
+	case "${1}" in
+	"text") xclip -selection clipboard ;;
+	"file") xclip -selection clipboard -t "${2}" -i "${3}" ;;
+	"get-clipboard") xclip -o -selection clipboard ;;
+	esac
+}
+
+image_handle() {
+	case "${1}" in
+	"blur") mogrify -blur 0x8 "${2}" ;;
+	"check_program")
+		check_program "mogrify" "imagemagick must be installed"
+	;;
+	esac
+}
+
+file_handle() {
+	file=$2
+	case $1 in
+	get-mime_type)
+	m=$(file --mime-type -b "$file" 2>/dev/null) && { echo "$m"; return; }
+	m=$(file -I "$file" 2>/dev/null) && { m=${m#*: }; m=${m%%;*}; echo "$m"; return; }
+	m=$(file -i "$file" 2>/dev/null) && { m=${m#*: }; m=${m%%;*}; echo "$m"; return; }
+	return 1
+	;;
+	esac
+}
+
+notify_handle() {
+	case "${1}" in
+	"reload") xsetroot -name "fsignal:1" ;;
+	"send")
+		echo "${2}" > /tmp/noti.fifo
+		shift 2
+		printf "%s\n" "$*" > /tmp/noti.txt
+		xsetroot -name "fsignal:1"
+	;;
+	esac
+}
+
+compositor_handle() {
+    case "${1}" in
+        "start") pgrep -x picom >/dev/null || picom -b & ;;
+        "stop") pgrep -x picom >/dev/null && pkill -x picom ;;
+    esac
+}
+
+status_handle() {
+	[ "${1}" = "reload" ] && slreload
+}
+
+menu_handle() {
+	case "${1}" in
+	"default") flags="" ;;
+	"center") flags="-bw 1 -c -g 1 -l 25" ;;
+	esac
+	shift
+	dmenu ${flags}
+}